Patent ID: 7222355

Claim:
A circuit arrangement for providing a video signal to a video display from a selectable subset of a plurality of digital video data carried on a plurality of video data channels, wherein the digital video data is generated from video signals from a plurality of video sources, and each video channel selectably carries either color or monochrome video data, comprising: a processor configured and arranged to interpret display commands; a selector circuit coupled to the processor and having a plurality of output ports and input ports arranged for connection to the plurality of video data channels, the selector circuit configured and arranged to select digital video data received at a first data rate from a subset of the channels responsive to an input selection signal from the processor and provide selected digital video data at the output ports at a second data rate that is half the first data rate; a plurality of data routers, each having an output port and an input port coupled to a respective one of the output ports of the selector circuit, and each data router configured and arranged to convert input video data from YCrCb format to RGB format; wherein the video data is logically segmented into frames of pixel data, and the data routers are configurable for operation in a first mode or a second mode, wherein a single data router processes video data from a single channel of video data while operating in the first mode, and in the second mode a first data router processes a first half of the pixel data of a frame and a second data router processes a second half of the pixel data of the frame; a video data sequencer coupled to the output ports of the data routers, the sequencer configured and arranged to merge the selected video data into frames of video data; and a digital-to-analog converter coupled to the video data sequencer, the converter configured and arranged to generate an analog video signal from the frames of video data.