BB-HCM515CE - Panasonic Video Monitoring Service Manual (repair manual). Page 11

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• IC704 is a CMOS image sensor module of 1.3M pixel, which outputs the image data (CAND [7:0]) of an SXGA (1280x1024) size

or a VGA (640x480) size (thinned-out image) as well as the synchronized signal (CAM_HD,CAM_VD) and the pixel clock (CAM-
CLK).
(Connected to the CMOS board via the connector of CN702)

• Power supply voltage of IC704 is: IO = +2.8V and inside = +1.8V.
• The clock of IC704 is 27MHz, which is supplied from the CPU board (CAM_MCLK).
• The control of IC704 is conducted via I2C BUS by CPU.
• Hard reset (MEGA_RST) and power down (CAM_PD) of IC704 are controlled by GPIO of IC102 on the CPU board.
• The above-mentioned signals and the power supplies are connected to the CPU board via CN701.

• Image data (CAMD [7:0]), synchronized signal(CAM_HD, CAM_VD) and pixel clock (CAMCLK) that are input to the CPU board

from the CMOS board are input to the image correction IC (IC112) via CN106.

• The image correction IC (IC112) has achieved the backlight/grayscale correction function, which helps you see the grayscale

after the lack in the gradation on a dark part or a bright part of an image has been corrected.

• Power supply voltages of IC112 are +3.3V for IO and +1.8V for an inside use that occurs in IC113.
• The image data corrected at IC112 is input to IC102 so that it is compressed in the JPEG and MPEG-4 formats together with the

synchronized signal and the pixel clock.