Free to Air Digital Terrestrial Receiver (set-top-box
Contents
1. 33 Freeview Limited freeview 4 4 4 For Conformance testing manufacturers will be required to deliver two ASI transport streams containing relevant converted binary image files together with all relevant NIT and PMT data necessary for their receiver to properly undergo a successful DVB SSU operation One stream will replace the software in the receiver as demonstrated by a new version number or some other visible indicator the other will restore the receiver to its then current configuration 4 5 Logical Channel Numbering The logical channel numbering specification used is base on the Australian and French variation to the UK specification For more information see section 6 1 of the Transmission Rules For Freeview DTT Network ver 2 00document Freeview Limited 32 33 Freeview Limited freeview END Freeview Limited 33 332. Digital AC 3 32 44 1 amp 48KHz Pass Through ISO IEC 14496 3 and signalled by TS 101 154 on SPIDF Annex C Only Pass through of DD audio to the Digital Audio Connector is required Dolby Digital AC 3 32 44 1 8 48KHz 1 Downmix to stereo Pair o EH ISO IEC 14496 3 and signalled by TS 101 154 MPEG 4 HE AAC up to mono and stereo level 2 ISO IEC 14496 3 bitstreams only HE AAC audio for services will be encoded for the stereo pair It is optional for the receiver to decode multi channel level 4 bitstreams Annex C Subtitles DVB Subtitles ETSI EN 300 743 V1 3 1 rev 7 HD ammendent DVB subtitles shall be invoked from a suitable labelled remote control key which is always under the control of the receiver i e not under control of receiver group 3 of MHEG E o O Freeview Limited 13 33 Freeview Limited Resources Display of subtitles during enhanced programming Teletext Freeview Limited Reference Detail Where both are components of a service ability to simultaneously present both Subtitles and interactive application graphics if required by viewer preferences D Book sections 17 4 and 15 2 A receiver shall either a have the facility to acquire teletext as defined in EN 300 472 DVB Specification conveying ITU R System B Teletext in DVB Bitstreams and reinsert it in the vertical blanking interval VBI of the composite video output according to specification ITU R BT 653 2 Te
3. appropriate connections EN 50049 Remote control and batteries An easy to understand user manual in q English language l FEE Status basic status check may be invoked by a menu driven option or a user selected key The OSD is to present the reception quality signal strength indicator Channel ID a NE Video and Audio PIDs bi output HDMI HDCP Support for AC 3 via the HDMI is optional Freeview Limited 24 33 Freeview Limited freeview Ce _ T S RCA phono providing composite CVBS video Shall meet the characteristics in ITU report 624 4 Output Secondary TV SCART with both composite CVBS and RGB or Shall only provide SD video resolution max output YPbPr selectable Audio output L R 702x576 output SCART shall support widescreen switching on pin 8 EN 50049 1 Analogue Phono RCA Audio left Colour white amp Right Colour I Red Audio connectors 9 7 Dolby Digital SPDIF for pass through of Dolby Digital AC 3 Either an Optical and or Coaxial Digital Audio Output s UHF Modulator Tuneable to UHF channels 21 to 69 RF Connector I 75 ohm IEC 169 2 Male Female Frequency 1 470 to 860 MHz TV Standard PAL BG I DK Preset Channel 22 RF loop through RF Loop through connector o Data Interface The receiver shall have a data interface to perform software upgrades and should comply to one of the following options An RS232 connector 9 pin D sub Universal Serial Bus RJ 45 Ethernet IEE802
4. information is essential if the viewer is to enjoy all of the content being broadcast Receivers must offer a complete list of available unencrypted services and information as carried in DVB S I EIT present following about the current and following programmes A comprehensive multi day programme schedule will be broadcast as an EPG service to an MHEG 5 V1 06 application to the receiver 20 33 Freeview Limited Bal men Scanning for Services Logical channel numbers Identification of service changes Selection via service list Selection via numeric entry Hidden services Freeview Limited Reference Detail The receiver shall be capable of automatically detecting changes in the services configuration of each broadcast transport stream provided that such changes are implemented by the broadcaster in accordance to the dransmission rules and are compliant with the DVB SI standards ETSI EN 300 468 TR 101 211 The intent of this requirement is to allow the broadcaster to vary the services offering within the relevant broadcast transport stream s without the viewer needing to rescan the receiver Ability to locate store and handle services with Logical Channel Numbers LCNs within the ranges of 1 to 799 Automatic identification storage of services or service changes without the need for user intervention by reference to the NIT and or SDT It shall be without disturbance to the viewer and shall not r
5. 3 Memory Stick Freeview Limited 25 33 Freeview Limited freeview is _ a a Freeview Limited 26 33 Freeview Limited Resources Remote Control Freeview Limited Reference Detail Remote Control is to be supplied with the receiver The manufacture is free to design the remote control but the basic key functions and button labels should be as drawn below Register 14 Receiver Group ON s SS a ue Register 15 ne d Register 13 Com eo OO O Register 16 freeview The EPG button will launch the MHEG 5 EPG application The TEXT or another suitable labelled button on the remote is to initially launch a DVB Teletext service It is expected a future MHEG 5 Digitext application will replace the DVB Teletext service This application shall be launched from the TEXT button The RED button will launch any available MHEG 5 Interactive application when broadcast All other buttons as D Book Chapter 2 5 rRemote Control Key Labelling 27 1 33 Freeview Limited freeview Resources Reference Detail Maintenance amp To allow for software changes in either receivers must be upgradeable in a practical manner i e over air download The upgrade process of upgrading should cause minimal disruption to the viewer However to minimise the diversity of deployed software builds and to most efficiently use the availabl
6. Freeview Limited freeview Free to Air Digital Terrestrial Receiver set top box Requirements Profile For New Zealand Free to Air Digital Broadcasting Version 2 0 Freeview Limited 1 33 Freeview Limited freeview Date 10th November 2010 Freeview Limited 2 33 Freeview Limited freeview Table of Contents 1 TOOU HON sc ses a E ces ose ed SER 4 TA MOC ENA STN AS ON er ee en de ae 4 Ta POPO SIHON erea A EE O EE E E E T EEA EE 4 1 3 New Specification Requirements Introduction ns 5 14 PUFHPOSE src cota 5 A Pa 6 FEA o on ease daeieeeanesteasiece sues 6 o A e o o OOO En A O A 8 SO e ee ee a Rs 10 SS RC CONVICT PRO IR RESET ass ne nent o BO POD E A 11 A RON Pelee IS OS e n pena 31 a 31 SOS ere 31 4 3 Interactive Services see ee eee eee 31 AA ONAE DAS a ee dc 0e 31 do IGOGIG AIG TTT nh Eya euT le ae do ne 32 Freeview Limited 3 33 Freeview Limited freeview 1 Introduction 1 1 Document History Version Date Author Details 1 0 18 12 2006 SMcBride Release for manufacturer review and feedback as part of Request for Proposal 1 1 13 06 2007 SMcBride Updated with Manufactures Feedback and removes the requirement for H 264 AVC SD Receivers 1 2 16 08 2007 SMcBride Updated with further feedback from manufactures changed to an NIT based scan and amended minor errors 1n ver 1 1 1 3 20 12 2007 SMcBride Final Release 2 0 10 11 2010 SMcBride Updated Specification to encompass HD MHE
7. G and MHEG Interaction channel Refernences the new D Book 6 2 1 including the MHEG ICEncryptedstreamExtension and LifecycleExtension 1 2 Proposition This baseline profile which is based upon open standards is for a high definition HD Digital Terrestrial Receiver for reception of ree to air or unencrypted services The Freeview DVB T platform will not certify H 264 AVC SD receivers Items in this specification are divided into Required and ptional categories Where a feature is stated as Required its inclusion is necessary for the achievement of a minimum compliance with Freeview transmission requirements Additional Optional functions may be added by the vendor to enhance the consumer proposition and these will be welcomed by Freeview In order to be compliant where a feature is ptional and is included in an offered receiver design the optional feature must be implemented in accordance with the associated referenced standards This specification is not a comprehensive list of all relevant standards relating to consumer equipment that can provide digital terrestrial reception but rather a list of those standards considered relevant to Freeview requirements The profile is based upon open standards predominantly Digital Video Broadcasting DVB standards and the UK DTG D Book or includes open implementations which are in use on the UK DTT platform Changes and additions have been made in this document to suit the required di
8. It is the aim of the specification to ensure that the Freeview approved receiver in New Zealand satisfies the minimum requirements of each broadcaster The receiver will operate as defined in the freeview Transmission Rules for Freeview DTT Network New Zealand Odocument In the initial launch of DTT in New Zealand there will be 3 FTA DTT multiplexes with a future provision for a further 2 covering Bands IV and V of the UHF Frequency range The receiver is to search and decode all multiplexes in these bands 1 6 Glossary AFD Active Format Descriptor AC 3 Dolby Digital 5 1 Channel CVBS Composite Video Blanking and Synchronization D Book see technical standards listed elsewhere in this document BER Bit Error Rate C N Carrier to Noise Ration CVBS Composite Video Baseband Signal DTT Digital Terrestrial Television DVB Digital Video Broadcast organisation DVB T DVB Terrestrial Freeview Limited 6 33 Freeview Limited DTG EBU EPG EIT FEC Freeview FTA HDCP HDMI HDTV IRD IDTVS MHEG 5 May MP HL MP ML MPEG Must present tense NIT PAL QAM QPSK Freeview Limited freeview Digital Television Group I a UK digital television industry organisation European Broadcasting Union Electronic Programme Guide Event Information Table Forward Error Correction Consumer Brand and company name of the service provider in NZ Free to Air High Bandwidth Digital Content Protection High Definition Multime
9. a Interface specification Version 1 3a0 Freeview Limited 8 33 Freeview Limited HDCP EN 300 468 V1 11 1 TR 101 211 V1 11 1 EN 300 472 v1 3 1 EN 300 744 v 1 6 1 TR 101 190 v 1 2 1 ETR 101 154 v1 7 1 ETSI 162 freeview rHigh Definition Digital Content Protection System Revision 1 10 Digital Video Broadcasting DVB Digital Broadcasting Systems for Television Sound and Data Services Specification for service information SI in Digital Video Broadcasting DVB European Telecommunication Standards Institute ETSI Digital Video Broadcasting DVB guidelines on implementation and usage of Service information Sl Digital Video Broadcasting DVB Digital Broadcasting Systems for Television Sound and Data Services Specification for conveying ITU R system B Teletext in Digital Video Broadcasting DVB Bitstreams European Telecommunication Standards Institute ETSI Digital Video Broadcasting DVB DVB Framing structure Channel coding and modulation for digital terrestrial television European Telecommunications Standards Institute ETSI Digital Video Broadcasting DVB Implementation guidelines for DVB terrestrial Transmission aspects Digital Video Broadcasting DVB Implementation Guidelines for the use of video and audio coding in Broadcasting Applications based on the MPEG 2 transport stream Digital Broadcasting Systems for Television sound and data services allocation of service informati
10. dia Interface High Definition Television Integrated Receiver Decoder Integrated Digital Televisions A standard devised for the middleware for interactive services MHEG stands for rMultimedia and Hypermedia information coding Expert Groupo Indicates an event or provision which is permitted but not mandatory Main Profile at High Level Main Profile at Main Level Moving Pictures Expert Group Indicates that a third party must comply to ensure correct operation Indicates an existing provision Network Information Table Phase Alternating Line Quadrature Amplitude Modulation Quadrature Phase Shift Keying 7 33 Freeview Limited OSD RF RS SD SDTV SFN SI S PDIF STB Shall Should TS UHF Y C YPbPr Will 1 7 References D BOOK HDMI freeview Onscreen Display Radio Frequency Reed Solomon Standard Definition Standard Definition Television Single Frequency Network Service Information Sony Philips Digital Interface Set Top Box which is equivalent to a digital Terrestrial receiver Indicates a mandatory provision Indicates a desirable but not mandatory provision Transport Stream A data structure defined in ISO IEC 13818 1 Ultra High Frequency S Video Signal Wideband Component Video Signal Indicates an assumption about existing states or future events Digital Television Group Digital Terrestrial Television Requirements for Interoperability Issue 6 2 16 High Definition Multimedi
11. e broadcast capacity the receiver must detect and act upon the Summary broadcast of a relevant software download within 24 hours of its transmission commencing Auto upgrade Receivers shall be capable of automatic i e not user DVB Specification for System Software Update in initiated software upgrade by over air download with DVB Systems TS 102 006 ver 1 3 1 minimal interruption to the viewer and within 24 hours of availability of the download under normal operating conditions Downloads in Receivers shall be able to handle the presence of any carrier software downloads in any NIT referred carrier signal signal Middleware A compliant MHEG 5 UK Ver 1 06 profile plus the 2 additional extensions as detailed in section 5 Freeview Limited 28 33 10 2 Download Support for the use of DVB SSU to at least the simple mechanism profile as defined in ETSI TS 102 006 is required Freeview Limited freeview Reference Detail ETSI standards as listed in the relevant sections of this specification and the DVB T Freeview Transmission Rules document Freeview NZ Compliance with DVB T Freeview Transmission Rules Ver 2 0 document eee S Energy new Australian and New Zealand energy standard for Manufactures to state receiver power consumption standards digital television receivers is currently being drafted in normal operating mode and standby mode Receivers will need to comply with this standard once ratified Freeview Lim
12. e figure in the UHF Band IV and V Performance Freeview Limited 18 33 Freeview Limited freeview Resources Reference Detail Receiver Better than 1 5dB With reference to C N values given in the D Book implementation section 9 12 for all modulation and code rates listed Margin Interference Values as stated in Tables 14 15 16 17 18 19 22 Immunity and 23 ITU R BT 1368 6 document Forward Error Ye 2 3 Y 5 6 7 8 Auto Correction Codes Guard Interval Tu 4 Tu 8 Tu 16 Tu 32 SFN Operation There shall be regions mainly in metropolitan areas of TS 101 191 V1 4 1 06 04 New Zealand where SFN will be in use Mega frame for Single Frequency Network SFN synchronization Tolerance to The receiver shall continue to correctly demodulate and Equal Amplitude decode the DVB T signal in an SFN environment when SFN Signals there are two or more signals of equal amplitude present at the receiver input provided the maximum time difference between the signals is less than 90 of the guard interval It is assumed the amplitude of each signal is greater than that specified in 4 8 Freeview Limited 19 33 Freeview Limited lad T Scanning for Multiplexers Over Air Software Download Service Information amp Selection Summary Freeview Limited freeview Reference Detail On the initial scan the STB may perform an automatic scan based on the NIT information or a full UHF based auto scan It shall fi
13. either 4 2 0 or 4 2 2 Alpha blending need not be supported but the layer may be shown or hidden OSD Graphics Layer an 8 bit palletised layer which can display region based graphics Each CLUT palette entry to support Y 8 bit Cb 8 bit Cr 8 bit Chroma to be sub sampled to either 4 2 0 or 4 4 4 Freeview Limited 16 33 8 o 2 o p Freeview Limited freeview _ _ Receiver The Character set of the receiver shall be the Character EN 300 468 Annex A Character Set code table 00 Latin Alphabet as specified in ISO 6937 Tuner In accordance to EN300 744 Rev R1 4 1 Decoder RF input IEC 60169 2 connector RF loop through IEC 60169 2 Opt connector If RF loop through connector supplied UHF bands IV and V Loop Through 0 dB typical Input impedance 75 ohm nominal Modulation COFDM UHF Frequency 470 MHz to 860MHz 8Mhz Signal Bandwidth 7 61MHz Bandwidth l aor The receiver shall be able to receive carriers within an offset of upto 50KHZ from the nominal centre frequency Freeview Limited 17 33 Freeview Limited freeview Resources Reference Detail Input Signal Required signal power dBeV for 2x10 4 post Guassian transmission channel assumed Level Receiver Viterbi Sensitivity Modulation Code Rate Guassian dBeV CE 17 0 Ya 18 0 7 8 19 8 1 2 20 9 2 3 23 3 Y 24 7 5 6 25 7 26 Ve 26 6 2 3 28 8 A 30 4 319 718 32 8 4 9 Receiver Noise Better than dB nois
14. equire a rescan The initial displayed service list following a full automatic scan must present services in ascending order of LCN Service selection via numeric entry shall always select a service with a corresponding LCN regardless of any viewer favourites Services identified as Middendin the LCN descriptor shall not appear in the service list presented to the viewer In addition such services may shall be selectable by numeric entry freeview If any broadcast service referenced in the SI which does not have an associated LCN is shall be allocated a value in the 800 LCN range Any service referenced in the PSI but without an SI reference shall not be allocated an LCN 21 33 freeview Freeview Limited Resources ESG rNow Nexto ESG Schedule O Freeview Limited Reference Detail Now Next screen guide shall be derived using information from DVB SI EIT p f tables as per EN 300 468 The presentation of the now next banner is as per manufactures chosen user interface but it is desirable for the following information to be displayed in the bottom third of the screen Current time Start time of now and next programme End time of now and next programme Logical Channel Number Channel Name Date An 8 day EPG will be provided as an MHEG 5 application This application will be invoked using the EPG or GUIDE button on the remote control The ESG NOW and next should be displayed when the user chan
15. ges channels for approx 2 secs and may also be launched using the info button on the remote control If a descriptor is missing from the ElT table the receiver shall not display an error message 22 33 Freeview Limited Reference Detail TDT TOT The receiver shall have a real time clock calendar running continuously The clock shall be updated by the incoming TDT and TOT table in the SI The receiver shall display the local time Copy Protection Set up and I O Easy to use and Receivers shall be simple to set up and operate and be simple provided with clear easy to understand user documentation documentation in line with that requirement D Book Section 26 Digital Outputs The receiver will provide HDCP digital content protection on the HDMI output Freeview Limited freeview EN 300 468 Alternatively the receiver may perform its own DST Computation to calculate the local time 23 33 Freeview Limited freeview Resources Reference Detail Support package The following peripheral items should be included within a baseline receiver package An RF lead cable for connection of loop through connector to a second receiver 500mm min length male F connectors each end Composite CVBS and stereo audio RCA cable 1m min length Component video and stereo audio RCA cable s 1m min length HDMI Cable SCART cable 1m min length secure fixing type fully connected internal screening on
16. gital terrestrial platform in New Freeview Limited 4 33 Freeview Limited freeview Zealand This most notably includes requirements for H 264 AVC decoding not MPEG 2 and high definition video resolution output 1 4 Purpose The purpose of this document is to describe the requirements for a Freeview certified Free to Air Terrestrial receiver for New Zealand and to refer to detailed specifications that are required for conformant implementation The profile is in the form of a hardware specification outline together with an overview of software requirements The software is to be routinely capable of being upgraded via d hrough the air download O Freeview Limited 5 33 Freeview Limited freeview 1 5 Scope The document sets out to identify the baseline functional specification of a H 264 AVC HD Freeview digital terrestrial receiver only It does not specify the requirements of a SD receiver which will not be certified for use on the Freeview DVB T network Integrated Digital Televisions IDTV see separate specification and Personal Video Recorders PVRs see separate specification are outside the scope of this document It is intended that a terrestrial receiver conforming to this profile should comprise part of a domestic installation in conjunction with an external fixed wideband terrestrial UHF antenna input The receiver output s will connect to the television display and possibly other domestic equipment
17. io language Multi Language The receiver is to at least support a primary and Support secondary audio language based on the ISO 639 language descriptors associated with the audio streams in the ISO IEC 13818 MPEG2 transport stream 3 14 Widescreen For SD video resolution output format D Book V4 Section 3 4 and Section 24 2 Descriptors changes as detailed in the dransmission rulesdincluding analogue outputs support for correct aspect ratio and Active Format Descriptors 14x9 processing Receiver may offer the option of a 14 9 letter box format when working with SD outputs on 4 3 displays D Book section 24 Active Format Ability to handle 16 9 widescreen and 4 3 picture format gt Receiver shall not support WSS insertion on any Freeview Limited 15 33 Freeview Limited freeview ae pe _ 3 17 OSD Minimally Support for a 2 graphics layer model Video Still Image layer There is no requirement to display both still image and motion video at the same e Image Layer a full colour layer to display I Frame time they are mutually exclusive stills captured from the video decoder Layer to support Y 8 bit Cb 8 bit Cr 8 bit Chroma to be sub sampled to either 4 2 0 or 4 2 2 Alpha blending need not be supported but the layer may be shown or hidden Video Layer a full colour layer displaying the output of the MPEG video decoder ae NOS EPPO eye D TBN D Book ver 6 2 1 section 4 4 1 amp 22 3 Chroma to be sub sampled to
18. ited 29 33 Freeview Limited freeview AA _ Freeview Limited 30 33 Freeview Limited freeview 4 Key Elements of Software A number of software elements in addition to those required for basic services will need to be available or developed prior to launch They are 4 1 EPG An 8 day EPG service will be broadcast on all Freeview multiplexes as an MHEG 5 application The MHEG 5 Application will enable the user to navigate through all platform services The user experience should be consistent across all receivers 4 2 Subtitles According to EN 300 743 v1 3 11 Digital Video Broadcast DVB Subtitling Systems 4 3 Interactive Services These services will be developed utilising MHEG 5 applications 4 4 Software Upgrades A service for providing firmware updates to receivers will be available on the home transport stream using the DVB specification for SSU 4 4 1 All conforming receivers shall be capable of a systems software update using the simple profile defined ini ETSI TS 102 006 4 4 2 Manufacturers shall ensure that the receiver offered shall only respond to a unique OUI code Organisation Unique Identifier This means that the receiver offered shall not react to any other OUI from any other manufacturer nor react to any other OUI from the same company which relates to a different model receiver 4 4 3 The default DVB SSU mode for receivers shall be with DVB SSU fenabled Freeview Limited 31
19. letext Systems and or b include a Teletext decoder as defined by ETSI standard 300 706 Enhanced Teletext Specification including up to Teletext V1 5 and display Teletext pages on the attached TV or video monitor via an on screen display OSD that can be viewed via all available video output interface signals A suitable remote control button other than the d EXT button must be provided to launch the Teletext OSD display A Digitext service may be provided via an MHEG 5 Application This will be accessed by the ATEXT dButton on the RCU freeview Receivers that are capable of simultaneously presenting both subtitles and interactive application graphics must observe the rules enabling applications to suspend presentation of Subtitles where editorially required Receivers must support Teletext either via OSD or VBI pass through mechanisms Providing the alternative mechanism as well is optional The dEXTORCU button is under MHEG control see 3 11 ball Via an MHEG 5 Application 14 33 Freeview Limited freeview lad Resources Reference Detail D Book Section 4 Design of controls should take into account that Descriptors many users of audio description are visually Receivers that are capable of presenting audio impaired description shall provide at least the minimum user controls D Book 6 2 1 If the secondary audio language is not present then the receiver shall automatically choose the primary aud
20. nd all DTT multiplexers within its cell and shall tune in to the correct DVB structure channel coding modulation and shall display all services After a scan the channel list shall contain only valid channels currently active on the network The receiver shall not perform a canAdd function a thereby leaving old services within a channel list It addition to an automatic search it shall be possible to perform a manual search where the channel number id or frequency is entered New channels shall be added to the service list No duplicated channels shall be displayed in the service list The receiver shall support DVB System Software Update SSU to at least the simple profile ETSI TS 102 006 refers After a receiver is installed it must offer the viewer all services that may be received in that geographic region compliant with the Freeview regional services requirement which utilises the service availability descriptor signalled within the SDT The services being broadcast may change over time To ensure that the viewer is always able to access all services being broadcast to the selected region the receiver must detect and reflect to the viewer any such changes with minimal viewer involvement All services have an associated Logical Channel Number Use of the logical channel number ensures that the viewer becomes familiar with a specific remote control unit button number for each channel Access to and use of accurate service
21. on Sl codes for digital Video Broadcasting DVB systems European Telecommunication Standards Institute ETSI O Freeview Limited 9 33 Freeview Limited freeview ETSI 300 743 v1 3 1 Digital Video Broadcasting DVB DVB Subtitling Systems European Telecommunication Standards Institute ETSI ISO IEC 14496 10 Information Technology 1 Coding of audio visual objects I part 101 2005 Advanced Coding ETSI MHEG MHEG Broadcast Profile ETSI ES 202 184 v1 1 1n NorDig Unified ver NorDig Unified Requirements for Integrated Receiver Decoders for 1 0 2 use in cable satellite terrestrial and IP based networks Freeview NZ TRANSMISSION RULES FOR FREEVIEW DVB T NETWORK VER 2 0 New Zealand 2 Overview This specification uses the UK DTG D BOOK V6 2 1 as its primary reference in particular Chapter 22 Receiver Requirements and Chapters 23 27 relating to receiver behaviour and diagnostics with changes modifications to suit digital Terrestrial broadcasting in New Zealand Freeview Limited 10 33 Freeview Limited freeview 3 Receiver Profile The Manufacturers Response column in the following table is included to enable a detailed response to each specification item Resources Reference Detail The processing power and memory configuration of the receiver must be suitable for the routine operation of FTA digital Terrestrial reception DVB T together with the embedded operation of MHEG 5 Version 1 06 applications and the pro
22. on of any content or application not intended for the selected service ISO IEC 14496 10 MPEG4 video H 264 AVC Encodin l Y de 2005 Information Technology 1 Coding of audio visual objects I part 10 1 Advanced Coding MPEG2 Video MPEG 2 MP ML video resolution 720x576 PAL Opt ISO IEC 13818 Opt Opt Opt 3 1 3 2 3 3 A 3 SDTV Formats Resolution Frame Rate Scanning Aspect Ratio 576p25 720x576 25 Progressive 16 9 and 4 3 576125 720x576 25 Interlaced 16 9 and 4 3 Req Within the Menu System and or Remote control of the receiver an option is provided to change the output video format as required by the user MEC 85 o Opt Resolution Frame Rate Scanning Aspect Ratio MI 100 1108050 1920x1080 50 Progressive 16 9 Op 11080925 1920x1080 25 Progressive 16 9 Opt 4080125 1920x1080 25 Interlaced 16 9 Req 10 720950 1280 x720 50 Progressive 16 9 Req A o A The receiver is not to output a HD format on any analogue video outputs The receiver is to perform a downconversion or upconversion from any valid HD input resolution to a user selected video resolution output lt is optional for the receiver to upconvert a SD input resolution to any valid HD resolution on the HDMI output O Freeview Limited 12 33 Freeview Limited freeview eal eal _ A Audio Decoding MPEG1 Layer II Musicam audio mode stereo ISO IEC 11172 3 Sampling Rate 32 44 1 amp 48KHz Ap Dolby
23. vision of the routine replacement of all software via dhrough the air download The related parameter limits specified in this section are believed to be the minimum necessary to achieve these requirements Services The receiver must give access to all NZ free to view broadcast digital Terrestrial television radio and enhanced interactive television services This must include the capability to efficiently present radio channels DVB subtitles Digital Text and Enhanced Broadcast elements of all services It must present DVB subtitles when broadcast and if requested by the viewer manage the output video in both widescreen 16 9 and 4 3 picture formats to suit the connected display Summary Where possible receivers should be able to present both subtitles and interactive graphics simultaneously However not all receivers may be able to do this the result being that interactive content will not always be available to viewers that wish subtitles to be presented Freeview Limited 11 33 Freeview Limited freeview e Resources Reference Detail Time exclusive Some services called time exclusive services are only broadcast for part of the day and share their multiplex capacity with services other services The receiver shall handle the transition between the active and inactive states of a time exclusive service in an orderly fashion presenting clean transitions into and out of video audio and inter active content streams without presentati
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