D Board Block DiagramFigure 26The output of the LVDS transmitter of the DG board is provided to the D board via theconnector DG5/D5. IC9500 of the D board contains a LVDS receiver that converts theRGB data to its original form. In this IC, the customer and panel related OSD data aremixed with the video. The output of the IC is provided to the Format Converter/RGBProcessor, IC9300, for interlace to progressive conversion of the 1080i signal.Subsequently, all signals are converted to the 768P format to match the resolution ofthe plasma display panel. Adjustments such as white balance, contrast, and color drivesare performed inside this IC. IC9300 contains the Plasma AI (Adaptive brightnessIntensifier) circuit that analyzes the video program level for the distribution of dark andbright components. The Sub-field Processor is used to speed up the scanning processand to control the number of sustain periods. This increases the brightness andimproves the contrast ratio. It also creates the two channels of data that drive the dataoutput boards.The D-board provides the scan, sustain, and data drive signals. The scan pulses areoutput to the SC board. The sustain pulses are output to the SS board. The data drivesignals are output to the C1, and C2 boards. The C1 board drives the right portion of thepanel; the C2 board drives the left portion.32
