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Section 9
Circuit Description
9-1. Optical System (OHB Block)
9-1-1. BI-358 Board
The BI-358 board contains a 2/3-inch CMOS image sensor (IC001), a thermometer (IC007), and power ICs (IC003, IC005) for
analog circuits.
The common BI-358 board is used for R, G, and B respectively.
9-1-2. IF-1331 Board
The IF-1331 board contains a CMOS image sensor power circuit and a flash memory IC (IC010) that stores RPN automatic
compensation (APR) data and sensor adjustment data.
9-1-3. DR-697 Board (HDC-P50)
The DR-697 board contains a CPU (IC001) and Motor Drivers (IC002, IC006) that control Filter Disc Unit.
9-1-4. DR-699 Board (HDC-P31)
The DR-699 board contains a CPU (IC001) and Motor Drivers (IC002) that control Filter Disc Unit.
9-1-5. SE-1197 Board (HDC-P50)
The SE-1197 board contains a potentiometer that detects a position of the Filter Disc Unit.
9-1-6. SE-1216 Board (HDC-P31)
The SE-1216 board contains a potentiometer that detects a position of the Filter Disc Unit.
9-2. Signal Processing/Transmission System
9-2-1. DPR-393 Board
The imaging signal that is input from the BI-358 board (R/G/B) is corrected by the camera signal processor ASIC IC (IC500). Then
paint processing is added to the corrected signal in the camera processor IC (IC800).
The ASIC ICs have the following functions.
•
Correction processor AISC (IC500)
Correction processing (defects, shading, etc.)
•
Paint processor ASIC ASIC (IC800)
Camera process processing (Knee, Gamma, etc.) and enhanced processing
