CMOS TYPE CAMERA
Contents
1. 1 6 4 1 Command format 56 00 34 01 00 1 6 4 2 COM REPLY 76 00 34 00 04 P2 where P2 4 bytes is the size of image data which host wants to get 1 6 4 3 Communication protocol Get size of current frame GET FBUF LEN 56 00 34 01 00 COM REPLY 76 00 34 00 04 00 01 2C 00 Current frame still image data size is 00012C00h 1 6 5 READ FBUF command 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 8 Crom p one h tis The host sends this command to get the image data from frame buffer 1 6 5 1 Command format 56 00 32 0C 00 0A 00 00 00 00 P3 P4 where P3 4 bytes informs JC409M W01 that how many bytes of data the host is going to read It must be multiple of 4 P4 2 bytes represents the delay time between the command and data received from COM REPLY see 6 6 5 2 The time unit is 0 01 millisecond For example P4 10 00 delay time is 10 milliseconds 1 6 5 2 COM REPLY 76 00 32 00 00 P5 76 00 32 00 00 where P5 n bytes is the image data which host wants to get n is equal to P3 in this case 1 6 5 3 Communication protocol Get image from frame buffer data size 0200h READ FBUF delay time 1000 0 01 10ms 56 00 32 OC 00 OA 00 00 00 00 00 00 02 00 10 00 COM REPLY 76 00 32 00 00 Get image data starting Image data Get image data size 0200h COM REPLY 76 00 32 00 00 Get image data ending Note Before sendi2. Oxo m p one n t s X ZOUFEG E 2 0FST S Ih WLLL BZA e 5 M7 00XP0 35 v lo ric 2 0 Specification Item Specification Remark Pixel Size NTSC default Image Sensor 1 5 CMOS sensor OV7740 Baud Rate 9 6Kbps 115 2Kbps 115 2Kbps default Output TTL Video Output VGA amp 60fps 1Vp p Operating Voltage 3 3V 10 Working Current 110 mA Construction 4P IR filter Effective Focal Length 3 27mm F 2 5 Lens FOV 58 Distortion lt 1 0 Relative illumination 60 3 44 Operating Temp 20 C 60 C 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org Com p o ne n tis User Manual 1 Serial Interface 1 1 Baud Rate The ITV GECWV407M supports total 5 types of baud rate 9 600bps 19 200bps 38 400bps 57 600bps and 115 200bps Default baud rate is 115 200bps In other words host needs to use 115200bps at the first connection with ITV GECWV407M After the first connection host can change the baud rate to other supported values 1 2 Single Byte Timing Diagram A single byte RS 232 transmission consists of one start bit 8 bit contents and one stop bit A start bit is always 0 while a stop bit is always 1 LSB is sent out first and is right after the start bit Single Byte Transmission d H H H H H H H t H H H D L Mg eo Hers ong tug eug vug sug Figure 5 RS232 communications sin
3. Communication protocol Set image size to QVGA SET SAMPLE SIZE 56 00 31 05 04 01 RENE COM REPLY 76 00 31 00 00 1 6 8 SET COMPRESSRATIO command The host issues this command to set compressing rate of the image 1 6 8 1 Command format 56 00 31 05 04 01 00 1A P8 where P8 1 byte is the configuration value of image compression ratio This compression ratio value is ranged from 0x00 to OxFF The bigger the value is the higher the compression ratio Default compression ratio is 0x35 1 6 8 2 COM REPLY 76 00 31 00 00 1 6 8 3 Communication protocol Set image compression ratio to 0x50 SET COMPRESSION RATIO 56 00 31 05 04 01 00 1A 50 COM REPLY 76 00 31 00 00 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 11 Crom p o nj n ts 1 6 8 COM REPLY command The COM REPLY is a UART command which is sent from ITV GECWV407M in order to inform the host whether the command which was just sent is executed well or in order to transmit the data which the host wants to get About all cases of COM REPLY command please refer to the above commands sections NOTE When the host issues SET BAUDRATE command SET SAMPLE SIZE command or SET COMPRESS RATIO command the system needs to restart to take effect These parameters are stored into camera module s built in EEPROM So next time module boots up these parameters still work 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www
4. 00 MODULE COM REPLY 76 00 11 00 OB 56 43 30 37 30 36 20 31 2E 1 6 2 SYSTEM RESET Command The SYSTEM RESET command is issued by the host in the following case There is always no reply after several commands were sent by host 1 6 2 1 Command format 56 00 26 00 1 6 2 2 COM REPLY 76 00 26 00 00 1 6 2 3 Communication protocol SYSTEM RESET 56 00 26 00 COM REPLY 76 00 26 00 00 When the host has received the correct COM REPLY 76 00 26 00 00 after about ten milliseconds ITV GECWV407M is going to restart About 2s later JC409M W01 works normally as usual 1 6 3 FBUF CTRL command The FBUF CTRL command is used to stop current frame image data update in frame buffer in order to get current frame still image 1 6 3 1 Command format 56 00 36 01 P1 where P1 one byte is the control parameter of video frame buffer Table 4 lists out the definition of P1 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 7 Cio im p o nie nh tis Frame control parameter P1 Definition 0 Stop frame buffer data update at current frame 3 Resume normal video state Table 4 Frame control parameter 1 6 3 2 COM REPLY 76 00 36 00 00 1 6 3 3 Communication protocol Stop at current frame FBUF CTRL 56 00 36 01 00 1 6 4 GET FBUF LEN command COM REPLY 76 00 36 00 00 The GET FBUF LEN command is used to get size of current frame still image in frame buffer
5. 1 40 03 01 21 00 02 11 01 03 11 01 FF C4 01 A2 00 00 01 05 01 01 01 01 01 01 00 00 00 00 00 00 00 00 01 02 03 04 05 06 07 08 09 0A OB 01 00 03 01 01 01 01 01 01 01 01 01 00 00 00 00 00 00 01 02 03 04 05 06 07 08 09 0A OB 10 00 02 01 03 03 02 04 03 05 05 04 04 00 00 01 7D 01 02 03 00 04 11 05 12 21 31 41 06 13 51 61 07 22 71 14 32 81 91 A1 08 23 42 B1 6F C2 90 8C 99 10 C6 E5 1B A8 AB 76 77 38 22 39 OF 1F C2 69 8C BF 54 6E EC F2 4C 91 OE 7B AD 21 12 5A D9 88 BO F2 61 9F B7 AO AB 74 0C 28 AO 42 D1 40 10 5C CE 61 50 42 16 CF E5 51 5D 28 9E 01 2C 64 9C 73 8C FF 00 9E 68 00 CF DA ED 3D 64 5F E7 FF 00 D7 A4 83 FD 22 CD A2 FE 25 E9 FD 29 8C 48 OF 9D 65 24 7F C4 BD 07 EA29 10 F9 9A 73 8F EE E7 FC 68 00 63 9D 34 7B 1C 7E B5 66 03 8B 64 3E 8B 48 07 02 A7 B5 41 7E D8 83 1E A4 50 22 39 FF 00 77 66 89 DC E2 96 5F DC 59 85 1C 33 53 01 50 0B 7B 6D C7 EF 1A 4B 44 2A 1A 57 3D 68 01 FO DC 79 AE CB B7 81 DO D4 F4 80 28 AO 04 A2 80 3F FF FF FF FF D9 To verify the correctness of the image data we can see the data starting at FF D8 and ending at FF D9 It tells us that this is the correct image data Then follows procedures below we can get an integral image 1 create a file and name it as XOOCJPG 2 putthe correct image data into it 3 save the file Performs the above operation the image is shown as below 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 16
6. CxO im Pp o n ents V 1 2 22 04 2013 RB ITV GECWV407M User Manual CMOS TYPE CAMERA Application The ITV GECWV407M JPEG compression module performs as a video camera or a JPEG compressed still camera and can be fixed into all kinds of system For example remote monitoring vehicle monitoring visible the doorbell camera phones digital image records industry control access control etc Users can send out a snapshot command from the host in order to capture a full resolution single frame still picture The picture is then compressed by the JPEG engine and transferred to the host Feature 1 Small size 28mm x 20mm L x W 2 0 3M CMOS ensor VGA resolution down sample to QVGA 3 Video out VGA amp 60fps optional 4 Low power consumption 3 3V operation 5 UART interface support up to 115 2Kbps 6 Built in JPEG CODE 7 Built in lens optional Outline 20 FRONT EEN 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 1 Crom p one fh tis Block Diagram EEPROM Program Pin Function PIN Description a Power 33 DC TXD Data Transmit 3 3V RXD Data Receive 3 3V GND VIDEO GND Power Ground VIDEO 1V p p The default socket is 4 pins we will not assemble the fifth pin Video out unless user specify 1 Lens Structure 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 2
7. ame FBUF CTRL 56 00 36 01 00 COM REPLY 76 00 36 00 00 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 14 Crom pi oon ien tis Current frame size is 25D4 h GET FBUF LEN 56 00 34 01 00 COM REPLY 76 00 34 00 04 00 00 25 D4 Image size is 0x012CO00 data delay time is 1000 01 READ FBUF 10ms 56 00 32 OC 00 OA 00 00 00 00 00 00 25 D4 10 00 COM REPLY 76 00 32 00 00 Get image data starting Image data Get image data size 25D4h COM REPLY 76 00 32 00 00 Get image data ending Resume normal video state FBUF CTRL 56 00 36 01 03 COM REPLY 76 00 36 00 00 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 15 Crom pi on nh tis The image data we got from ITV GECWV407M by performing the above operations is indicated as below FF D8 FF FE 00 24 DA OE 6C 96 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FO 00 40 01 7F 00 32 12 0B 51 04 51 04 00 00 FF DB 00 84 00 20 16 18 1C 18 14 20 1C 1A 1C 24 22 20 26 30 4F 34 30 2C 2C 30 61 45 49 3A AE 73 65 79 77 71 65 GF 6D 7F 8F B7 9B 7F 87 AD 89 6D 6F 9F D8 A1 AD BD C2 CC CE CC 7B 99 EO FO DE C6 EE B7 C8 CC C4 01 22 24 24 30 2A 30 5D 34 34 5D C4 83 6F 83 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 C4 FF FE 00 05 00 00 00 FF CO 00 11 08 00 FO 0
8. gle byte timing diagram 1 3 Command Timing Diagram A single command consists of 4 or more depends on data length s value continuous single byte RS 232 transmissions The following is an example of GET VERSION 56h 00h 11h 00h command 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 4 Com pro nen ts GET VERSION COMMAND Figure 6 GET VERSION command timing diagram 1 4 Command summary Command Functions GET VERSION Get Firmware version information SYSTEM RESET System reset FBUF CTRL Control frame buffer GET FBUF LEN Get image lengths in frame buffer READ FBUF Read frame buffer SET BAUDRATE Set serial baud rate SET SAMPLESIZE Set image size VGA QVGA SET COMPRESSRATIO Set image compressed rate 1 5 Command format Table 1 command summary Protocol sign 1byte Serial No 1byte Command 1byte Data length 1byte Conirol data nbytes Protocol sign This one byte field indicates the transmitting mode of the command Protocol sign value definitions Sending command 56h The command is sent from the host to ITV GECWV407M Replying command 76h Command is received from ITV GECWV407M to the host 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 5 Gre m p o n en ts Table 2 protocol sign Serial No Now this one byte field is invariably set to O Command This one byte filed ind
9. icates the command function About the detail please refer to Table 3 command set Data length This one byte field specifies the total length in bytes of control data by which is followed Control data The data of this field is only meaningful when Data length is not equal to 0 This data depends on the different commands About the details please refer to the following sections 1 6 Command protocol Protocol a Command Data Command name Serial No Control data sign value length GET VERSION 56h 00h 11h 00h Don t care SYSTEM RESET 56h 00h 26h 00h Don t care FBUF CTRL 56h 00h 36h Oth To know data vaule of this GET FBUF LEN 56h 00h 94h Oih field please refer to the READ FBUF 56h OOh 32h OCh following sections SET BAUDRATE 56h OOh 31h O6h o know data vaule of this SET SAMPLESIZE 56h OOh 31h 05h SET field please refer to the 56h OOh 31h 05h following sections COMPRESSRATIO S Table 3 Command set 1 6 1 GET VERSION Command The GET VERSION command is used to get version information of the firmware running in ITV GECWV407M 1 6 1 1 Command format 56 00 11 00 1 6 1 2 COM REPLY 76 00 11 00 0B 56 43 30 37 30 36 20 31 2E 30 30 VC0706 1 00 6 6 1 3 Communication protocol To get the firmware version please follow the below operations 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 6 Caem po nen tis GET VERSION 56 00 11
10. intertec org 12 Ce m p on en ts Appendix A Flow diagram for getting an image Below is the flow diagram for getting one or more images Camera module power up Wait for 2000ms Connect with camera module Camera module power down 115200bps Needs to change EEPROM parameters baud rate image resolution compress ratio Set BAUD RATE Set SAMPLE SIZE Set COMPRESS RATIO SYSTEM RESET Wait for 1000ms Connect camera module at new baud rate Wait for 1000ms Send FBUF CTRL command to stop frame buffer Send GET PBUF command and be ready to get image data SYSTEM RESET No for 3 times Get image data from camera module Get image data loop Send FBUF CTRL command to resume normal video state 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 13 Com po nie nt s Appendix B Communication example for getting an image Below is the example for how to get a QVGA image by UART 9 baud rate 57600bps and higher compression ratio Set UART baud rate 57600bps SET BAUD RATE 56 00 31 06 04 02 00 08 1C 4C COM REPLY 76 00 31 00 00 Set image format size to QVGA SET SAMPLE SIZE 56 00 31 05 04 01 00 19 11 COM REPLY 76 00 31 00 00 Set image compression ratio to 0x50 SET COMPRESSIONRATIO 56 00 31 05 04 01 00 1A 50 COM REPLY 76 00 31 00 00 SYSTEM RESET 56 00 26 00 COM REPLY 76 00 26 00 00 Stop at current fr
11. ng this command users should issue GET FBUF LEN command to get the image size first 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 9 Cio im po ne n tis 1 6 6 SET BAUDRATE command The host issues this command to set the UART baud rate 1 6 6 1 Command format 56 00 31 06 04 02 00 08 P6 where P6 2 bytes is the configuration value of UART baud rate The relationship between configuration value and baud rate is shown in Table 5 Baud rate bps Configuration value 9600 OxAEC8 19200 Ox56E4 38400 Ox2AF2 57600 0x1C4C 115200 OxODA6 default Table 5 Baud rate relationship 1 6 6 2 COM REPLY 76 00 31 00 00 1 6 6 3 Communication protocol Set baud rate to 38400bps SET BAUDRATE 56 00 31 06 04 02 00 08 2A F2 COM REPLY 76 00 31 00 00 1 6 7 SET SAMPLESIZE command The host issues this command to set the sample size of image image resolution 1 6 7 1 Command format 56 00 31 05 04 01 00 19 P7 where P7 1 byte is the configuration value of image sample size The relationship between configuration value and image resolution is shown in Table 6 2013 Intertec Components GmbH Erdinger Str 45 85356 Freising www intertec org 10 Coo m pon Nn tis Image resolution Configuration value VGA 0x00 default QVGA Ox11 QQVGA 0x22 Table 6 image resolution size relationship 1 6 7 2 COM REPLY 76 00 31 00 00 1 6 7 3
Download Pdf Manuals
Related Search