D1 Board
Figure 20
D1 Main ICs Operation
IC3001 Video Switch
The user selects the desired video input using the front panel button or the remote control. The microprocessor reads this data and sends out a command via the IIC bus line. The IIC data is read by IC3001 and the video input is chosen.
IC9007 A/D Converter
This integrated circuit converts the RGB analog signals to eight bit parallel data.
IC9200 Format Converter
The digital video data is converted to progressive scan and mixed with the OSD data. Other adjustments such as white balance, contrast and color are also corrected here. The two channels of data are output to the D2 board for the sub- field drive circuit.
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