device(s) device(s) device(s) device(s)
Contents
1. Channel code Instruction data from Identification of H2 assigned to H2 for door locking S2 in H2 in S2 Responding Signal sent from S2 intended to H2 S2 2 1000_0011_0010_0100 0_0010 0000 0001_1101_0010 Channel code Instruction data from S2 Identification of S2 assigned to for turning on the lock H2 in S2 icon in H2 Figure 6 US 2012 0313750 A1 Dec 13 2012 Sheet 7 of 9 Patent Application Publication 4 oanbiy CH LH oziA q pieypueH pleupueH s eubis ss J1IAA d aS PA li se sour p useq n kai ge i 4 S 2 4 ks 4 Se eg yun seg pun seg yun seg L9 s eolnsp S edlAap s eolaap s edinap s eoilaep jndino Josu s y nd no Josu s indino pajenjoy yndu pejenjoy yndu poyenpvy s edlaap Josuas jnduj rs a gs Anua Aunoes ZS Amua Aunoeg LS Anua Aunoes US 2012 0313750 A1 Dec 13 2012 Sheet 8 of 9 Patent Application Publication g ni 00t Josseooud ojoiu yons jo syed q sny pue josseooud OjoIW asod und jeseuab e Guisn p lu uu duui aq keu Japooue pue Jepodeq ee er ey I 100p pojouue ue Buiu do q poJabbGl si 1u A lluA yun aseq u seJinep jndul y Buowe si 1ood yun pjeypuey UI sediAap jndui y Buowe si ped y Aua ss y joue pueq Jo no pue uoud TO yun eseq ui seolaep puue pupsixa yndjno y Buowe ae HOLIMS UuasIS pue syoo JOOG ee WNNALNV y2. THE DRAWING 0018 The present invention will be explained by ways of non limiting examples with reference to the attached draw ings in which 0019 FIG 1 is a schematic diagram showing different modules and their relationship in an embodiment ofa security system in accordance with the present invention 0020 FIG 2 is a schematic diagram showing different modules and their relationship in another embodiment of a security system in accordance with the present invention 0021 FIG 3isaschematic diagram corresponding to FIG 2 but with more information showing unique communication links of the different modules 0022 FIG 4 is a data content diagram showing the work ing of two unique communication links of a module pair of FIG 3 0023 FIG 5 is a data content diagram showing the work ing of two unique communication links of one of the other module pairs of FIG 3 0024 FIG 6 is a data content diagram showing the work ing of two unique communication links of yet one of the other module pairs of FIG 3 0025 FIG 7 is a schematic diagram showing different modules and their relationship in yet another embodiment of a security system in accordance with the present invention 0026 FIG 8 is a schematic diagram showing functional blocks of an embodiment of a security system in accordance with the present invention and 0027 FIG 9 is a schematic diagram showing the layout appearance of an embodiment of a handhe
3. nowadays have a cellular phone and existing cellular phone already including a display command keys and antennas usable and sharable by the transmission and reception of unique signals for commu nication with secure entities in accordance with the present invention As such a cellular phone manufacturer can easily modify the design and adapt it to also function as a security handheld device Furthermore most cellular phones have already provided users with password protected access to the phone itself which automatically serves as an additional level of protection against unauthorized access to the secure enti ties registered with the cellular phone 0076 A further embodiment is similar to that illustrated in FIG 8 Components to the left of Interface 410 and 411 are in the analogy domain whereas components to the right of the interfaces are in the digital domain It is to be understood that this further embodiment is concerned with animplementation suitable for the handheld device or the base unit of the secure entity The following example illustrates how this embodi ment in accordance with the present invention works In this embodiment the secure entity is a vehicle and the owner of the vehicle intends to arm his car Upon the owner depresses a button in his remote key fob a signal is sent from the button block 404 in key fob in FIG 8 to an encoder An encoded digital code containing command of the user s request is then sent fr
4. H1 2 and 82 1 corresponding to transmission of a signal from hand held device HI intended for vehicle S2 and transmission of a feedback signal from vehicle S2 intended for handheld device HI respectively The signal sent from handheld device H1 intended for vehicle S2 is a code string including three parts namely a first part a second part and a third part The first part is actually the identification code of handheld device H1 the second part is actually the channel code specifying the chan nel set in handheld H1 with respect to vehicle S2 and the third part is a code carrying a desire instruction from handheld device H1 to vehicle S2 The feedback signal from vehicle S2 intended for handheld device H1 is a code string also includ ing three parts namely a first part a second part and a third part The first part is actually the identification code of vehicle S2 the second part is actually the channel code specifying the channel set in vehicle S2 with respect to handheld device H1 and the third part is a code carrying a desire instruction from vehicle S2 to handheld device HI 0049 FIG 6is similar to FIG 4 or 5 but further illustrates unique communication link mechanism using code strings H2 2 and 82 2 corresponding to transmission ofa signal from handheld device H2 intended for vehicle S2 and transmission of a feedback signal from vehicle S2 intended for handheld device H2 respectively The signal sent from handheld device H2 i
5. US 20120313750A1 av United States a Patent Application Publication o Pub No US 2012 0313750 A1 AU et al 43 Pub Date Dec 13 2012 54 76 21 22 63 51 SECURITY SYSTEM MODULES AND METHOD OF OPERATION THEREOF Inventors Appl No Filed Jonson Chung shun AU Fremont CA US Melvin Sik Yu LI Fremont CA US 13 540 629 Jul 3 2012 Related U S Application Data Continuation in part of application No 12 367 554 filed on Feb 9 2009 Publication Classification Int Cl G05B 19 00 Input sensor device s 2006 01 Security Entity S1 z Actuated output device s Base Unit Input sensor device s 52 USCh n usu ayay usus 340 5 61 57 ABSTRACT The present invention is concerned with a security system The system may comprise at least a first handheld device a second handheld device a first secure entity and a second secure entity The first handheld device and the first secure entity are electronically pre registered with each other the first handheld device and the second secure entity are elec tronically pre registered with each other the second handheld device and the first secure entity are electronically pre regis tered with each other and the second handheld device and the second secure entity are electronically pre registered with each other with pre registration of each respective handheld device and secure entit
6. ZON s22 Hza Wiieses Signals i Li I NON SA oe N Handheld Device H1 An example of wireless signal content Signal H1 1 contains lt H1 gt as handheld s Identification Code and lt 1 gt as handheld s Channel Code Figure 3 Patent Application Publication Dec 13 2012 Sheet 4 of 9 US 2012 0313750 A1 Signal sent from H1 intended to S1 H1 1 0001 1011 1000 0001 0 0001 0000 0000 0100 1000 Channel code Instruction data from Identification of H1 assigned to H1 for door locking S1 in H1 in S1 Responding Signal sent from S1 intended to H1 S1 1 1000 0010 0001 0000 0 0001 0000 0001 1101 0010 Channel code Instruction data from S1 Identification of S1 assigned to for turning on the lock H1 in S1 icon in H1 Figure 4 Patent Application Publication Dec 13 2012 Sheet 5 of 9 US 2012 0313750 A1 Signal sent from H1 intended to S2 H1 2 0001 1011 1000 0001 0 0010 0000 0000 0100 1000 Channel code Instruction data from Identification of H1 assigned to H1 for door locking S2 in H1 in S2 Responding Signal sent from S2 intended to H1 S2 1 1000 0011 0010 0100 0 0001 0000 0001 1101 0010 Channel code Instruction data from S2 Identification of S2 assigned to for turning on the lock H1 in S2 icon in H1 Figure 5 Patent Application Publication Dec 13 2012 Sheet 6 of 9 US 2012 0313750 A1 Signal sent from H2 intended to S2 H2 2 0101 1000 0000 1101 0 0010 0000_0000_0100 1000
7. a security entity Handheld Device and Key System 0056 In Embodiment 1 each key is designated for a spe cific function in a particular pre registered secure entity However when the number of secure entities to be accessed is Dec 13 2012 many many keys would be needed on the handheld device and the handheld device would be crowded with keys The operation of such handheld device would be cumbersome 0057 FIG 9 is a schematic diagram showing an embodi ment of a handheld device In this embodiment the handheld device has four keys namely K1 K2 K3 and K3 The hand held device in FIG 9 is different from that of handheld H1 in Embodiment 1 in that key K1 is for channel selection of an intended security entity The LCD display of the handheld indicates the last channel selected All signals emitted from the handheld device will not only carry the handheld device s identification code but also the channel code with respect to the selected secure entity This means a user can select the secure entity to which he intends to send instructions via the handheld device by adjusting the channel by pressing key K1 0058 Once the channel has been set the user may want to send an instruction to the secure entity for performing a certain action This is achieved by pressing one of the corre sponding key K2 K3 and K4 designated for pre programmed functions As can be understood the same set of keys with predefined functionality in a ha
8. arried a second user i e the spouse who will require access to one of the two vehicles i e vehicle S2 that the first user owns To achieve this handheld device H2 similar to the handheld device H1 is purchased for the spouse Before second handheld device H2 and second vehicle B2 can recognize each other the second user will need to pre register handheld device H2 and vehicle S2 to recognize each other Details of the pre registration will be explained in further detail later in the description However once the pre registration process has taken place handheld device H2 on depressing of key K1 emits a fifth wireless signal detectable by a receiver in base unit B2 of vehicle S2 The fifth wireless signal includes codes encoding an instruc tion for locking all doors of vehicle S2 The receiver of vehicle S2 on receiving the wireless signal reacts by sending a corresponding signal to a microprocessor in base unit B2 to lock all the doors in accordance with the instruction On completion of the locking of all the doors a signal is gener ated to a wireless signal transmitter for transmitting a sixth wireless signal from vehicle S2 to handheld H2 for confirm ing the action of locking all the doors of vehicle S2 Handheld device H2 on receiving the sixth wireless signal from vehicle S2 displays on the LCD display the status of the doors i e the locked status of the doors With this when the user desiring to Dec 13 2012 check w
9. art coding of the second signal may represent an identification of the secure entity of the respective handheld device and secure entity pair the second part coding of the second signal may represent a channel code designated in the secure entity with respect to the handheld device of the respective handheld device and secure entity pair and the third part coding of the second signal may represent an instruction from the secure entity to the handheld device of the respective handheld device and secure entity pair With such configuration only signals from the respective handheld device intended for the respective secure entity will be responded by the respective secure entity and only signals from the respective secure entity generated in response to the signals from the respective handheld device will be responded by the respective handheld device 0006 Preferably the handheld devices may be remote control key fobs or cellular phones and the secure entities may be vehicles premises or computers 0007 In an embodiment the said handheld devices may include means for a user to input command for emitting the wireless signal The input means may be one or more physical and or virtual touch screen keys or buttons 0008 In one embodiment the first signal encoding the instruction for a desired predetermined action may be selected from a group including 0009 i locking or unlocking the first secure entity 0010 ii arming or disarming t
10. ase a new virgin handheld device H2 which is similar to handheld device H1 In order to allow handheld device H2 and vehicle S2 to respond to instructions intended for each other they will need to similarly pre register new handheld device H2 and vehicle S2 with each other based on the above principle and steps so that only signals emitted from handheld device H2 intended for vehicle S2 will be respond able by vehicle S2 and vice versa Of course when a channel code in vehicle S2 with respect to handheld device H2 is to be selected a channel code different from that with respect to handheld device H1 is to be used This is to ensure that signals from vehicle S2 intended for handheld device H2 will not be respondable by handheld device H1 0044 The above steps illustrate how a handheld device and a secure entity can register with each other and how to create a designated secure channel via which communication between the respective pair of handheld device and the secure entity can take place It is however to be noted that the hand held device and the secure entity can be reprogrammed from time to time for security reason such that a different identifi cation and or a different channel is are selected It is also to be noted that a new designated secure channel can be created by using a combination of an old identification code and a new channel code a new identification code and an old channel Dec 13 2012 code or a new identification
11. by putting handheld device H1 into a pre registration mode The identification is generated by the user manually or machine randomly selecting a code or identifi cation code out of a pool of codes provided to handheld device H1 Each code is defined by a 16 digit binary code and thus a total of 65536 codes 2 to the power of 16 or 2 5 After selecting the identification code it then becomes registered in handheld device H1 and the identification of handheld device HI Any signal emitted from handheld device H1 will then carry this selected identification code The identification code is stored in handheld device H1 s non volatile memory 0038 Step 2 After the identification of handheld device H1 has been determined a channel code with respect to vehicle S1 is to be selected so that signals carrying instruc tions for vehicle S1 generated by handheld device H1 will always carry this channel code This channel code is similar to the identification code as described above although the num ber of digits of the channel code is only five 5 in this embodiment In other words the channel code is selected out ofa total of 32 2 to the power of 5 or 2 The number 32 also represents the maximum number of secure entities with which handheld device H1 can register In an alternative embodiment handheld device H1 may be configured such that a smaller pool of channel codes out of the maximum available number of channel codes is available for sele
12. code and a new channel code for a pair of existing module and a new module 0045 In another embodiment there is an application in which once a new secure entity is acquired by a user s he depresses a key on a her his handheld K4 of FIG 9 for longer than 5 seconds that s he already has for his her other existing secure entity ies and also activates the new secure entity for example by depressing a key of the secure entity correspond ing to key K4 of the handheld device in either sequence to enter into the pre registration mode The user must do the pre registration process one pair at a time if there is more than one pair of modules to program After the relevant pair of modules enter into the pre registration mode the user depresses and releases key K4 of the handheld device nor mally that is duration of depressing on the button is shorter than 5 seconds one or more times until a desired unused channel is shown on the display of handheld Then s he depresses K4 for longer than 5 seconds to start the pre regis tration process During the process the handheld broadcasts its identification and the channel selected the secure entity receives and registers them followed by returning another broadcast signal containing its own identification together with an unused channel of its own back to the handheld Once the secure entity returns the aforementioned data it exits the pre registration mode likewise once the handheld receive
13. coding of the second signal represents an identification of said secure entity of the respective handheld device and secure entity pair the second part coding of the second signal represents a channel code designated in said secure entity with respect to said handheld device of the respective hand held device and secure entity pair and the third part coding of the second signal represents an instruction from said secure entity to said handheld device of the respective handheld device and secure entity pair 3 A security system as claimed in claim 1 wherein said handheld devices are remote control key fobs or cellular phones and said secure entities are vehicles premises or computers 4 A security system as claimed in claim 3 wherein said handheld devices include means for a user to input command for emitting the wireless signal 5 A security system as claimed in claim 4 wherein said input means is one or more physical and or virtual touch screen keys or buttons 6 A security system as claimed in claim 1 wherein said each first signal encoding said instruction for a desired pre determined action selected from a group including ii locking or unlocking the first secure entity ii arming or disarming the first secure entity v allowing or disallowing access to the first secure entity vi activating or deactivating the first secure entity and vii checking locked unlocked status of the first secure entity 7 A secur
14. ction by the user The use ofa smaller pool of channel codes allows the user to select more easily The channel code is stored in handheld device H1 s non volatile memory 0039 Step 3 After the channel code of handheld device H1 with respect to vehicle S1 has been determined vehicle S1 is also to be put into a pre registration mode Handheld device H1 is then caused to emit a signal carrying its identification code and the channel code with respect to vehicle S1 for reception by vehicle S1 On receiving this signal vehicle S1 registers this signal and will only respond to instructions from handheld device H1 only when the instructions are carried with this combination of identification code and channel US 2012 0313750 Al code This combination of identification code and channel code of handheld device H1 is stored in a non volatile memory in vehicle S1 0040 Step 4 Once the combination of identification code and channel code from handheld device H1 has been stored in vehicle S1 vehicle S1 is then caused to select an identification code for itself and also a channel code with respect to hand held device H1 only The codes are stored in vehicle Sts non volatile memory Vehicle S1 is then caused to emit a signal carrying its identification code and the channel code with respect to handheld device H1 On receiving this signal handheld device H1 registers this signal and will only respond to instructions from vehicle S1 when the inst
15. ctive handheld device and secure entity pair establishing a unique channel for the respective handheld device and secure entity pair b each said unique channel is configured to allow two way communication by encoded wireless signals between the respective handheld device and secure entity pair c the encoded signals include a first signal emitted from the handheld device intended for the secure entity of the respective handheld device and secure entity pair and a second signal emitted from the secure entity intended for the handheld device of the respective handheld device and secure entity pair with the second signal generated only in response to the first signal and actionable by the handheld Dec 13 2012 device of the respective handheld device and secure entity pair d each of the first signal and the second signal contains coding of at least a first part a second part and a third part e the first part coding of the first signal represents an identifi cation of said handheld device of the respective handheld device and secure entity pair the second part coding of the first signal represents a channel code designated in said hand held device with respect to said secure entity of the respective handheld device and secure entity pair and the third part coding of the first signal represents an instruction from said handheld device to said secure entity of the respective hand held device and secure entity pair Preferably the first p
16. e and the other mechanical key may be for the dead bolt lock for added security Then the user may have a further mechanical key for his her primary car and a further elec tronic remote alarm device for the car If the user has a second car or has access to the spouse s car s he may have two more electronic handheld devices to carry with the key chain In addition s he may have one or two more mechanical or elec tronic keys or card keys for access to his her work place As can be realized the user can easily be carrying about ten keys of different types This is very cumbersome 0004 The present invention seeks to provide a solution to the above described problem or at least to provide an alter native to the general public SUMMARY OF THE INVENTION 0005 According to a first aspect of the present invention there is provided a security system comprising at least a first handheld device a second handheld device a first secure entity and a second secure entity wherein a the first hand held device and the first secure entity are electronically pre registered with each other the first handheld device and the second secure entity are electronically pre registered with each other the second handheld device and the first secure entity are electronically pre registered with each other and the second handheld device and the second secure entity are electronically pre registered with each other with pre regis tration of each respe
17. e car headlights as a visual warning signal also in block 402 of the car In other words the third wireless signal is for indication of an exception event when a predetermined status is detected by the secure entity and that the third wireless signal is independent of the first signal from the handheld device and the second signal from the secure entity in response to the first signal 0079 It should be understood that certain features of the invention which are for clarity described in the context of separate embodiments may be provided in combination in single embodiments Conversely various features of the invention which are for brevity described in the context of a single embodiment may also be provided separately or in any appropriate sub combinations 1 A security system comprising at least a first handheld device a second handheld device a first secure entity and a second secure entity wherein a said first handheld device and said first secure entity are electronically pre registered with each other said first handheld device and said second secure entity are elec tronically pre registered with each other said second handheld device and said first secure entity are electroni cally pre registered with each other and said second handheld device and said second secure entity are elec tronically pre registered with each other with pre reg istration of each respective handheld device and secure entity pair establish
18. ecurity armed vehicle car is tampered with an attempted break in and upon a motion sensor in one of the doors in block 404 has detected the attempted break in a signal or a third signal is sent from the door block 404 in car to an encoder An encoded digital code containing command of the distress sign is then sent in two routes 1 from the encoder to a modulator over Interface 411 for wireless transmission to the remote key fob and 2 from the encoder to a CPU for event administration In the route to the modulator the modulator provides the signaling suitable for wireless transmission in a radio frequency RF band The RF signal is transmitted from the car and received by the remote key fob held by the user The super heterodyne receiver in the key fob converts the incoming RF signal to a fixed intermediate frequency IF suitable for detection in later stages of processing by mixing the RF signal with a frequency generated by a local oscillator The IF signal is demodulated to binary digital signaling which 1s further sent to a decoder 401 over Interface 410 A central processing unit CPU sees the distress signal originated from the car and thus excites a buzzer and or displays an alert signal in block 402 of US 2012 0313750 Al the key fob In the route to the CPU the distress signal is logged in the CPU as an event decoded and then forwarded to excite a siren as an audible warning signal in block 402 of the car and or to blink th
19. egistration will also be explained in further detail later in the description After the pre registration keys K3 and K4 are designated for locking and unlocking of the doors of vehicle S2 respectively in a similar fashion as keys K1 and K2 designated for the locking and unlocking of vehicle S1 respectively 0033 After the purchase of vehicle S2 there is still capac ity left in handheld device H1 for subsequent changes in the future in case the user would like to change the designation of keys periodically for security reasons or for further expansion in case the user acquires a third vehicle As can be understood from above the user requires only one electronic key for access to two or more vehicles Even when the user acquires a third vehicle in the future still he can register or program the same handheld device to access to the third vehicle and there is no need to acquire a third piece of hardware for access thereto Embodiment 2 0034 FIG 2 is a schematic diagram illustrating a second embodiment of a security system in accordance with the present invention The security system is generally similar to the security system of FIG 1 One main difference is that there are two handheld devices H1 H2 involved with one of the handheld devices H1 in possession at all times by a first user The first user relies on handheld H1 to access both vehicles S1 and S2 In this embodiment for sake of illustra tion this first user has just m
20. elaborated as follows 0064 As it is understood from the above explained embodiments one implementation of such a security system is for the car remote keyless entry system It is envisaged that a user can verify the status of his car as to whether the doors are locked or not or the security system is activated or not by way of a visual inspection of his her handheld device Alter natively the handheld device is configured to emit an audible signal reflecting the status This is to be contrasted with con ventional systems in which the user must have the ability to listen from afar or to see the car in line of sight if he she wishes to do verification having walked away from the car at a distance such as a few tens of feet and beyond 0065 It is envisaged that in alternative embodiments in accordance with the present invention the security system can be configured to emit a wireless signal detectable by the associated handheld device s and as such the car owner can be immediately notified of theft or tampering In such embodiments the output device of the vehicle will send a wireless distress signal to the handheld device s with which the vehicle has registered allowing the owner to take appro priate action in a timely manner 0066 Itis also envisaged that in alternative embodiments in accordance with the present invention a new secure entity e g a car residence or a computer can be purchased without a key Such embodiments w
21. equency compose the additional RF circuitry The circuitry can be realized in an integrated mono lithic semiconductor device Data decoding error detection for noise immunity and encoding functions are performed in a micro controller or processor with respective enhanced software 0069 Itis envisaged that for practical and aesthetic advan tages the handheld unit devices are configured to be as physi cally compact as possible As explained above most if not all data and signal processing is performed in the secure entity It is to be understood that in most cases most required hardware of the security system in accordance with the present inven tion resides in the secure entity which may be at a fixed location or at least typically provide relatively more physical space for accommodating the hardware than that of the hand held device otherwise allows The handheld device sends out a simple signal representing a depressed key as user com mand the secure entity that has registered with the handheld device receives decodes and responds to the signal such as locking the doors and armoring the security system Upon intended actions for the command is completed status of this particular user is updated in the secure entity e g vehicle Some encoded signals specific to a type of LCD panel and or an audible buzzer are then sent out from the car as feedback The handheld device that has registered the car receives and decodes the signals ca
22. f the invention are now illustrated below Embodiment 1 0029 FIG 1 illustrates schematically a first embodiment of a security system in accordance with the present invention The security system comprises a number of module types The module types include a first module type or a handheld device e g H1 Handheld device H1 is relatively compact and the appearance resembles a car remote control device that is currently available on the market In this embodiment handheld device H1 has a total of six button type keys namely K1 K2 K3 K4 K5 K6 and one liquid crystal display Handheld device H1 is configured to emit up to six different wireless signals Depending on which of the keys is depressed a corresponding signal is emitted The security system further comprises a second module type or a first secure entity In this embodiment the secure entity S1 is a conventional vehicle except in the present invention it is provided with a base unit B1 with which handheld H1 can communicate In other words handheld device H1 serves as a key for access to both vehicles S1 S2 0030 In this embodiment when vehicle S1 is first pur chased it is purchased with handheld device H1 Specifically handheld device H1 and vehicle S1 are pre registered with each other before they can be put into use Details of the pre registration will be explained in further detail later in the description Once the pre registration process has taken place handhe
23. hance of accidental match the number of binary digits used for defining an identification code should be increased although for many practical purposes the use of a 16 binary digit system should be sufficient True uniqueness can only be achieved by having the odd be absolute zero which requires the denominator to be infinitive or infinite number of bits in the ID code and obviously it is not possible in practice It is to be understood that even in the unlikely scenario that two handheld devices have been programmed with the same identification code it does not automatically mean that vehicles will respond to them the same way This is because each handheld still has a slight chance having selected the same channel codes with respect to each vehicle during pre registration process That is S1 could be on chan nel 1 of H1 while the same S1 could be on channel 2 of H2 thus S1 responds only to H1 on code string H1 1 even H1 and H2 have been accidentally programmed with H1 as the com mon identification code wherein S1 responds to H2 on code string H1 2 In other words the chance that a module responding to a signal not intended thereto would be much less that 65536 As can be seen the communication between each pair of handheld device and secure entity is a two way unique communication via a pre registered designated iden tification and channel In theory absolute uniqueness cannot be achieved because the supposedly unique identification i
24. he first secure entity 0011 ii allowing or disallowing access to the first secure entity 0012 ii activating or deactivating the first secure entity and 0013 Gv checking locked unlocked status of the first secure entity 0014 Suitably the handheld devices may include means for displaying and or indicating status of the secure entity in the respective handheld device and secure entity pair 0015 Ina specific embodiment the encoded wireless sig nals may be of radio frequency 0016 In a useful embodiment the security system may comprise one or more handheld devices registrable with one or more of the secure entities Additionally or alternatively the security system may comprise one or more secure entities registrable with one or more of the handheld devices Such feature s can leaving room for expansion when more hand held devices and or more secure entities are acquired 0017 Advantageously at least one of the secure entities may be configured to emit a third wireless signal for indica tion of an exception event when a predetermined status is detected by the secure entity and wherein the third wireless signal is independent of the first and second signals The security system may be configured such that one of the hand held devices or at least one handheld device is respondable to US 2012 0313750 Al the third wireless signal leading to a corresponding indica tion on the handheld device s BRIEF DESCRIPTION OF
25. hether the doors have been locked can simply look to the LCD display of handheld device H2 for the status of the doors This is to be contrasted with conventional systems in which after a user being away from the vehicle at a long distance and having forgotten whether s he had in fact locked the doors or armed the vehicle would have no way of knowing the status of the vehicle S he would either have to return closer to the vehicle and lock or arm the vehicle again or have to live with being paranoid about whether the vehicle would be vulnerable to be tampered with Details of the working of the codes will be explained in further detail later in the description 0035 The working of the above two embodiments is con tributed by steps for establishing unique communication in pre registration to be explained as follows Pre Registration of H1 and S1 with Each Other 0036 When vehicle S1 and handheld device H1 are first purchased they are considered as virgin and not readily able to emit signals for carrying instructions respondable by each other Thus they will need to undergo a pre registration pro cess in order to create designated channels via which instruc tions from handheld device H1 intended for vehicle S1 and instructions from vehicle S1 intended for handheld device H1 are transmitted wirelessly 0037 Step 1 In this embodiment the process is initiated by generating identification for handheld device H1 The process is started
26. icles involved with one person having access right to both vehicles and the other person having access right to only one vehicle only two keys or two handheld devices i e H1 H2 are required It is envis aged that in a corporation in which there are many employees and many secure premises e g rooms computers equip ment etc the number of handheld devices needed is also the same as the number of the employees This is advantageous Embodiment 3 0053 FIG 7 is a schematic diagram illustrating a third embodiment of a security system in accordance with the present invention This embodiment is similar to the system of FIG 2 and FIG 3 although there are a number of differ ences First instead of having two secure entities there are three secure entities namely a first vehicle S1 a residence S2 and a second vehicle S3 There are two persons to gain access although a first person P1 has access right to S1 and S2 only while a second person P2 has access right to the secure entities S2 and S3 only In other words both the persons P1 and P2 have common access right to the residence S2 although each of them has access right to the respective vehicle S1 or 83 To gain access to the vehicle S1 and the residence S2 all that the person P1 requires is one handheld device H1 The pre registration process of each pair of hand held device and secure entity is similar to that in above illus trated Embodiment 2 and will not be repeated he
27. ill be similar to the second embodiment or the third embodiment as illustrated in FIGS 2 and 7 In particular when having acquired a new secure entity the user or each of the users will still not require a further Dec 13 2012 handheld device and can use the or their existing handheld devices Each of the handheld devices has a unique identifi cation and a channel code of 20 possibilities A pre registra tion process is needed to establish the unique relationship among the secure entity and the handheld unit s 0067 In alternative embodiments the security system may be realized by integrating additional RF circuitry and software into existing devices and thus avoid creating another piece of hardware to be carried by the user for the new benefit Usefulness of a cellular phone or a digital wristwatch may be augmented with the function of the handheld device as illustrated above LCD display keypad or individual push buttons micro controller or processor or antenna etc are readily available building blocks sharable by the require ments in the present invention 0068 An implementation for the handheld device or the base unit of the secure entity is illustrated in FIG 8 An antenna switch local oscillator and mixer for intermediate frequency generation in a super heterodyne receiver demodulation and modulation for amplitude OnOff Keying and amplifiers and filters at appropriate stages to condition signal amplitude and fr
28. ing a unique channel for the respec tive handheld device and secure entity pair b each said unique channel is configured to allow two way communication by encoded wireless signals between the respective handheld device and secure entity pair c the encoded signals include a first signal emitted from the handheld device intended for the secure entity of the respective handheld device and secure entity pair and a second signal emitted from the secure entity intended for the handheld device of the respective handheld device and secure entity pair with the second signal generated only in response to the first signal and actionable by the handheld device of the respective handheld device and secure entity pair d each said first signal and said second signal contains coding of at least a first part a second part and a third part and e the first part coding of the first signal represents an identification of said handheld device of the respective handheld device and secure entity pair the second part coding of the first signal represents a channel code des ignated in said handheld device with respect to said secure entity of the respective handheld device and secure entity pair and the third part coding of the first signal represents an instruction from said handheld device to said secure entity of the respective handheld device and secure entity pair Dec 13 2012 2 A security system as claimed in claim 1 wherein the first part
29. ity system as claimed in claim 1 wherein said handheld devices include means for displaying and or indi cating status of said secure entity in the respective handheld device and secure entity pair 8 A security system as claimed in claim 1 wherein the encoded wireless signals are of radio frequency 9 A security system as claimed in claim 1 comprising one or more handheld devices registrable with one or more said secure entities 10 A security system as claimed in claim 1 comprising one or more secure entities registrable with one or more said handheld devices 11 A security system as claimed in claim 1 wherein at least one said secure entity is configured to emit a third wireless signal for indication of an exception event when a predetermined status is detected by said secure entity and wherein the third wireless signal is independent of the first and second signals 12 A security system as claimed in claim 11 wherein the security system is configured such that one of said handheld devices or at least one said handheld device is respondable to the third wireless signal leading to a corresponding indica tion on said one handheld device or said at least one handheld device
30. ive with being paranoid about whether the vehicle would be vulnerable to be tampered with Details of the working of the codes will be explained in further detail later in the description 0031 In this embodiment the key K2 is designated for unlocking all the doors in vehicle S1 Handheld device HI on depressing of key K2 emits a third wireless signal detectable by vehicle S1 The receiver of vehicle S1 on receiving the third wireless signal reacts by sending a corresponding signal to the microprocessor in base unit B1 which in turn sends a unlock signal to all the doors Once the doors are unlocked a fourth wireless signal is generated from vehicle S1 Hand US 2012 0313750 Al held device H1 on receiving the fourth wireless signal dis plays on the LCD the status of the doors of vehicle S1 as unlocked 0032 When theuser of vehicle S1 subsequently purchases a second secure entity or vehicle S2 he has an option of acquiring a new handheld device having pre registered with vehicle S2 This is however undesirable because it would mean that the user would have to carry one more piece of hardware Another more convenient option as enabled by the present invention and as in this embodiment would be to register vehicle S2 with his handheld device H1 so that the same handheld device H1 can control access to vehicle S2 in certain specific ways details of which will be explained later in this description Details of the pre r
31. l means linked to the legitimate user in the authorization process It is envisaged that in addition to a valid password a secure entity which in these embodiments taking the form of a personal computer in the authorization granting computer imple mented in a USB based dongle device for example must receive a valid identification from a handheld unit to complete the authorization process as such greatly reducing possibility of impersonated entry 0073 Another domain is for room entry one of the most conventional uses of key It is envisaged that a handheld device in accordance with the present invention can enter multiple rooms each room representing a secure entity reg istered with the handheld device using a single physical key 0074 As can be understood in a further embodiment of a security system in accordance with the present invention a user can program his her one handheld device to have Chan nel 1 for access to vehicle A Channel 2 for access to room A Channel 3 to vehicle B Channel 4 to computer A Channel 5 to room B and so on 0075 Inan alternative embodiment as shown in FIG 8 a cellular phone manufacturer can have cellular phones manu factured with such built in handheld devices configured to establish for example twenty channels for unique commu nication with secure entities such as vehicles residence etc The advantages with incorporating the present invention in cellular phone context is that most people
32. ld device H1 on depressing of key K1 emits a first wireless signal detectable by a receiver in base unit B1 of the first vehicle S1 The first wireless signal includes codes encoding a first instruction for locking all doors of vehicle S1 The receiver of vehicle S1 on receiving the first wireless signal reacts by sending a corresponding signal to a micro processor in base unit B1 which in turn sends a lock signal to all the doors in accordance with the first instruction On completion of the locking of all the doors a signal is gener ated by base unit B1 to a wireless signal transmitter for transmitting a second wireless signal from vehicle S1 to hand held H1 for confirming the action of locking all the doors of the vehicle S1 Handheld device H1 on receiving the second wireless signal from vehicle 1 will display on the LCD display the status of the doors of vehicle S1 i e the locked status of the doors With this when the user desiring to check whether the doors have been locked s he can simply look to the LCD display of handheld device H1 for the status of the doors This is to be contrasted with conventional systems in which after a user being away from the vehicle at a long distance and having forgotten whether s he had in fact locked the doors or armed the vehicle s he would have no way of knowing the status of the vehicle S he would either have to return closer to the vehicle and lock or arm the vehicle again or have to l
33. ld device in accor dance with the present invention DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE PRESENT INVENTION 0028 The present invention seeks to provide a solution which allows a or each user to carry only one handheld device and with which the user will not need to carry mul tiple devices for gaining access to multiple secure entities or premises The secure entity may be a vehicle premises such as a residence or an office or a computer control of access thereto is required Significantly the system is configured such that the handheld device is adapted to provide an indi cation of the status of a particular or target secure entity or premises the particular or target secure entity or premises being the entity or premises to which the handheld device has just sent an initial signal and the particular or target entity or premises has accordingly responded to the signal The provi sion of the indication of the status is achieved after the par ticular or target entity has emitted a feedback signal the feedback signal emitted in response to the initial signal It is to be noted that the feedback signal is specific in that the feedback is responded to by the handheld device that has sent the initial signal in the first place and not responded by other handheld device s despite these other handheld devices hav Dec 13 2012 ing pre registered with the particular or target entity Differ ent embodiments o
34. nctionally user of handheld H2 thus would not be bothered by indication of status of vehicle S2 when the user of handheld H2 has not sent any signal for vehicle S2 0047 FIG 4 further illustrates unique communication link mechanism using code strings H1 1 and S1 1 corre sponding to transmission ofa signal from handheld device H1 intended for vehicle S1 and transmission ofa feedback signal from vehicle S1 intended for handheld device H1 respec tively The signal sent from handheld device H1 intended for vehicle S1 is a code string including three parts namely a first part a second part and a third part The first part is actually the identification code of handheld device H1 the second part is actually the channel code specifying the channel set in hand held H1 with respect to vehicle S1 and the third part is a code carrying a desire instruction from handheld device H1 to vehicle S1 The feedback signal from vehicle S1 intended for handheld device HI is a code string also including three parts namely a first part a second part and a third part The first part is actually the identification code of vehicle S1 the second part is actually the channel code specifying the channel set in vehicle S1 with respect to handheld device H1 and the third part is a code carrying a desire instruction from vehicle S1 to handheld device H1 0048 FIG 5 is similar to FIG 4 further illustrates unique communication link mechanism using code strings
35. ndheld can be used for differ ent secure entities or vehicles If K2 and K3 are predefined as LOCKED UNLOCKED for vehicle S1 they can also be used for LOCKED UNLOCKED for vehicle S2 as long as the respective channel code has been selected by key K1 Thus each secure entity or vehicle doesn t require its own set of keys on a particular handheld device This will greatly reduce the number of keys required on the handheld device 0059 It is to be understood that there are many ways in which key system may be designed to allow a user to select channel and input instructions The key systems described in this description are not intended to be limiting to the scope of the present invention Other Embodiments 0060 In another embodiment and with reference to FIG 9 the handheld device is provided with four push buttons K1 K2 K3 and K4 and this time with K4 being dedicated as a channel select button K1 K2 K3 are dedicated as door LOCK door UNLOCK and NULL buttons fora first vehicle the first secure entity respectively K1 K2 K3 can be door UNLOCK door LOCK and NULL buttons for an office door the second secure entity respectively K1 K2 K3 can be password AUTHENTICATION NULL and NULL but tons for a PC running a program that is requesting a pass word the third secure entity respectively As can be seen despite the handheld device can control access to three secure entities and manipulate the status of three function
36. nds and data necessary to display relevant visual information in block 402 of the key fob and or to excite relevant audible device also in block 402 of the key fob 0077 Inone embodiment a given handheld device is suit able for use with multiple secure entities Definition of keys is as interpreted by each secure entity Content in the instruction data as shown in FIGS 4 5 and 6 caused by each key is the same regardless of the intended receiving secure entity It is secure entity s responsibility to correctly interpret the instruc tion data and take corresponding action it is the user s responsibility to know which key or combination of keys to use in order for the secure entity to act according to the user s desire One car a secure entity may interrupt K1 as shown in FIG 9 as the instruction to unlock all doors however a second car may interrupt the same K1 as the instruction to lock all doors A different user manual comes with each secure entity definition of keys is specified in it for the user to know how each respective secure entity interprets the set of keys On the other hand content in the instruction data sent from the secure entity can be universally interrupted by all handhelds as a common protocol such as an acknowledge signal to cause a ACK icon ona LCD display to lit or a string of ASCII codes to show text on the LCD display for convey ing a more elaborated message 0078 Itis envisaged that when the s
37. ntended for vehicle S2 is a code string including three parts namely a first part a second part and a third part The first part is actually the identification code of handheld device H2 the second part is actually the channel code specifying the Dec 13 2012 channel set in handheld H2 with respect to vehicle S2 and the third part is a code carrying a desire instruction from handheld device H2 to vehicle S2 The feedback signal from vehicle S2 intended for handheld device H2 is a code string also includ ing three parts namely a first part a second part and a third part The first part is actually the identification code of vehicle S2 the second part is actually the channel code specifying the channel set in vehicle S2 with respect to handheld device H2 and the third part is a code carrying a desire instruction from vehicle S2 to handheld device H2 0050 Each module will only respond to signals with spe cific combination of pre registered part 1 and part 2 Near unique and Unique Identification 0051 In the embodiment of FIG 2 and FIG 3 since the pool of available identifications i e 65 536 from which the user can select is high thus the possibility of accidental match is extremely low especially when the identity code is not selected by human as a person would be more likely to select from 1 for a first handheld the person owns then 2 for a second handheld the person owns and so on Of course in order to reduce the c
38. om the encoder to a modulator over Interface 411 The modulator provides the signaling suitable for wireless trans mission in a radio frequency RF band The RF signal is transmitted from the key fob and received by base unit of a secure entity e g a car The super heterodyne receiver in the Dec 13 2012 secure entity converts the incoming RF signal to a fixed intermediate frequency IF suitable for detection in later stages of processing by mixing the RF signal with a frequency generated by a local oscillator The IF signal is demodulated to binary digital signaling which is further sent to a decoder 401 over Interface 410 A central processing unit CPU sees the security arming desire originated from the user and thus locks the doors in block 402 of the car and or activates the car security system also in block 402 of the car The secure entity subsequently sends a signal back to the user s remote key fob to notify him that the operation was successfully performed This feedback signal from car to key fob is processed in a similar fashion as the signal originated from key fob to car It is encoded and sent to the modulator in the secure entity through its Interface 411 The modulated signal is then sent in RF signaling from the secure entity and received by the key fob Once it is received by the key fob the signal is converted to an IF signal for demodulation in the key fob The demodu lated digital signal is then decoded into comma
39. re 0054 The above embodiments are advantageous in that each user only requires one handheld device for controlling or gaining access to multiple secure entities Specifically regardless of the number of secure entities to be accessed the number of device required for each user is always one 0055 In each of FIG 1 FIGS 2 and 3 and FIG 7 the blocks labeled input sensor device s and the blocks labeled actuated output device s are connected to or reside in their respective modules These blocks are expressed schemati cally to illustrate that they may as well be some common components existing in for example a typical vehicle For instance a car door serves merely a removable barrier between interior and exterior of a car In the context of the present invention it also serves as an input sensor device which sends an instant signal signifying open close events of the secure entity the car once they take place as such events are relevant to the secure entity for further processing and action Furthermore as a prevalent application the car door also serves as an actuated output device that can be locked or unlocked by a signal sent from a base unit of a security entity For another instance a car horn is typically only actuated by the driver s depressing on the inner portion of a steering wheel of a vehicle However in the context of the present invention it can also be actuated by a signal sent from a base unit of
40. ructions are carried with this combination of identification code and chan nel code This combination of identification code and channel code is stored in a non volatile memory in handheld device H1 0041 Once the above steps have been completed all sig nals emitted from handheld device H1 intended for vehicle S1 are respondable by vehicle S1 only and vice versa Pre Registration of H1 and S2 with Each Other 0042 When the user of handheld device H1 has subse quently acquired vehicle S2 he will need to similarly pre register his existing handheld device H1 and new vehicle S2 with each other so that only signals emitted from handheld device H1 and intended for vehicle S2 will be respondable by vehicle S2 and vice versa Since an identification code has already been designated to handheld device HI step 1 is not needed and not to be repeated but steps 2 to 4 are to be followed However when a channel code in handheld device HI with respect to vehicle S2 is to be selected a channel code different from that with respect to vehicle S1 is to be used This is to ensure that signals from handheld device H1 intended for vehicle S2 will not be respondable by vehicle S1 The same applies to selecting a channel code in vehicle S2 with respect to handheld device HI Pre Registration of H2 and S2 with Each Other 0043 When the user of handheld H1 has married and would like to provide his spouse with access to vehicle S2 only they purch
41. s and registers the returned data from secure entity it exits the pre registration mode as well thereby completing the pro gramming process of pre registration Since the handheld device and the new secure entity are the only ones in the proximity set in pre registration mode at any given time only they are respondable to the signals broadcasted from each other 0046 FIG 3 is similar to FIG 2 although it contains further details illustrating each unique channel or communi cation link for each pair of handheld device secure entity For example communication of instructions between handheld unit H1 and base unit of secure entity S1 is conducted exclu sively via channels with notations H1 1 and 1 1 That is signals from handheld H1 intended for vehicle S1 always carry the identification code of handheld device H1 and the channel code 1 of H1 wherein vehicle S1 will not respond to any signal carrying whatever instructions from H1 unless the signal includes the code string H1 1 Similarly signals from vehicle S1 intended for handheld H1 always carry the identification code of vehicle S1 and the channel code 1 of S1 wherein handheld device H1 will not respond to any signal carrying whatever instructions from S1 unless the sig nal includes the code string 1 1 2 1 etc Communication between handheld device H1 and vehicle S2 is conducted exclusively in channels designated with code strings H1 2 and 82 1 corresponding to fir
42. s merely near unique For practical purposes unique means near unique in this description It is to be understood that there are numerous ways to represent identification besides this binary representation Thus the use of this particular binary representation should not be regarded as limiting to the scope of the present invention 0052 Unlike conventional identification systems which are mainly for security and uniqueness purposes the use of a combination an identification code and a channel code allows each pair of handheld device and secure entity to communi cate with each other exclusively in a pre defined channel Even when more than one secure entity have registered with a handheld device or vice versa and a same identification code has been used only the one that has pre registered with a same channel code shall be able to respond It is thus to be understood that for example in above illustrated Embodi ment 1 the wireless signal from handheld device H1 intended for vehicle S1 is recognizable by the receiver in vehicle S1 US 2012 0313750 Al and is respondable by vehicle S1 only This embodiment is to be compared with the conventional systems in which when two persons are to have access right with one of the persons having access right to both vehicles and the other person having access right to only one of the vehicles at least three separate keys would be needed As can be understood from above although there are two veh
43. s only four keys are used 0061 In alternative embodiments commands from the handheld unit s are issued through keypad physical or vir tual touch screen and such commands are received inter preted and processed at the secure entity As each secure entity can respond to one or more registered handheld units the secure entity is adapted and configured to keep states and status of each of such individual handheld units and acts correspondingly Status can be displayed on a screen such as LCD panel on the handheld device as described above or a simple set of lighting devices such as a group of LEDs at the handheld device It is to be understood that it is the secure unit instructing the handheld device what to display according to status information administrated within the secure entity The handheld device may therefore be considered a dummy primitive unit merely responsible for transmitting a stream of US 2012 0313750 Al code representing certain user s command and receiving another stream of code containing exact message to display If all the doors of the intended vehicle are already locked and the command contains a LOCK instruction then there is no apparent action taken in the vehicle and no apparent change on the handheld display The handheld has no memory about the door lock status as such it sends out the LOCK instruc tion even the intended vehicle is already locked The vehicle however does nothing to the door
44. s when it receives the LOCK instruction 0062 Various radio frequency RF technologies may be used for wireless implementation for links between handheld device and secure entities in accordance with the present invention Studies have shown that preferably frequency of operation is one that does not require specific license pertain ing to Title 47 of Code of Federal Regulations from Federal Communication Commission for the United States such as one in the range of 260 470 MHz or 902 928 MHz as long as data type signal strength and signaling duty cycle are observed according to the regulations 0063 Input output circuitry for wireless transceiving transmitting and receiving modem modulation and demodulation and codec encoding and decoding capabili ties are the basic building blocks realizing both handheld devices and base units of the secure entities For example transcoder under MT series from LINX Technologies may be used Reference is made to the product specification pub lished in April 2008 for MT series transcoder Part LICAL TRC MT and for MT Master Development System Part MDEV LICAL MT content of which is incorporated here in its entirety These building blocks for handheld device can be integrated in existing devices such as utilizing screens and keys readily provided in cellular phone Pocket PC PDA Per sonal Data Assistant watch or picture frame integrated key chain ornament embodiments of which will be
45. st signal transmission from HI to S2 and second signal transmission from S2 back to H1 respec tively Likewise communication between handheld device H2 and vehicle S1 is conducted exclusively in channels des ignated with code strings H2 1 and S1 2 corresponding to first signal transmission from H2 to S1 and second signal transmission from S1 back to H2 respectively Furthermore communication between handheld device H2 and vehicle S2 is conducted exclusively in channels designated with code strings H2 2 and S2 2 corresponding to first signal transmis sion from H2 to S2 and second signal transmission from S2 back to H2 respectively This feature of unique channel and communication link is actually different from the prior art in a multi fold significant manner First while each of handheld US 2012 0313750 Al devices H1 and H2 is pre registered with vehicle S2 a signal emitted from the vehicle S2 is only respondable by a respec tive handheld when the emitted signal is generated in response to a signal emitted from the respective handheld In other words when the respective handheld is H1 and when handheld H1 has sent a signal intended for vehicle S2 only handheld H1 will respond to the feedback signal from vehicle S2 only Technically despite the pre registration of handheld HI with vehicle S2 and also handheld H2 with vehicle S2 handhelds H1 and H2 will respond discriminatively by virtue of the unique channel and communication Fu
46. un pjaypuey ul seviAeP s3o A3q I idoiv1n T J aaa le Vall P jndjno y Buowe ae INndLno Jezznq pue Aejdsip qgo7 A cov edejajui pueq ui s auoud Jenie Jejnjjeo pueq ui Jo Patent Application Publication Dec 13 2012 Sheet 9 of 9 US 2012 0313750 A1 Handheld Unit Figure 9 US 2012 0313750 Al SECURITY SYSTEM MODULES AND METHOD OF OPERATION THEREOF RELATED APPLICATION 0001 The present invention is a continuation in part application from U S patent application Ser No 12 367 554 filed Feb 9 2009 content of which is incorporated herein in its entirety FIELD OF THE PRESENT INVENTION 0002 The present invention is concerned with a security system for controlling access to one or more secure entities by one or more users The present invention is also concerned with but not limited to modules of such security system a method of providing such security system a method of oper ating or implementing such security system and a platform of allowing different modules being compatible with each other in such security system BACKGROUND OF THE PRESENT INVENTION 0003 Mechanical locks and keys have been used for thou sands of years for controlling access to premises Nowadays it is still typical that a user would require two mechanical keys to gain access to his her residence One of the mechanical keys may be for the knob type lock on the main door to the residenc
47. using relevant status message to dis play on its LCD and or a distinct tone to sound from its buzzer 0070 Itis to be understood that an operation command or request is originated by the user from the handheld device Such command or request is received remotely by the coun terpart secure entity The secure entity processes the request and automatically sends a status signal back to the handheld device This signal considered as a feedback signal is received by the handheld device actuates an on board display and or an audible device to represent pertinent information conveyed by the feedback signal 0071 Itis envisaged that the present invention provides a universal platform and is suitable for use in various applica tions which benefit the user with a universal handheld device for secured remote access of multiple domains of secure entities Such domains can be of various types and purposes US 2012 0313750 Al 0072 One such domain is for strengthening security in computing Presently identification is verified and thus authorization is granted as long as the correct password is entered regardless of the legitimacy of the person entering the password As each password is merely a piece of information anyone learns of it as knowledge can use it at will and the possession of the password does not translate to the person necessarily being the legitimate user Further embodiments in accordance with the present invention add a physica
48. y pair establishing a unique channel for the respective handheld device and secure entity pair Security Entity S2 Actuated output device s B1 Base Unit Handheld Device H1 ka a Dashed Lines as Wireless Signals Handheld Device H2 Patent Application Publication Dec 13 2012 Sheet 1 of 9 US 2012 0313750 A1 Security Entity S1 Security Entity S2 Input Actuated Input Actuated sensor output sensor output device s device s device s device s td Base Unit Base Unit B1 B2 gt Dashed Lines as Pas Wireless Signals Handheld Device H1 Figure 1 Patent Application Publication Dec 13 2012 Sheet 2 of 9 US 2012 0313750 A1 Security Entity S1 Security Entity S2 Input Actuated Input Actuated sensor output sensor output device s device s device s device s Base Unit Base Unit B1 Dashed Lines as d can Wireless Signals Handheld Handheld Device Device H1 H2 Figure 2 Patent Application Publication Dec 13 2012 Sheet 3 of 9 US 2012 0313750 A1 Security Entity S1 Security Entity S2 Input Actuated Input Actuated sensor output sensor output device s device s device s device s la 1 Base Unit Base Unit B1 B2 s NBI saji FI 1 2 SS z H1 2 Dashed Lines as an it sta Ha
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