Patent ID: 7042950
Filing Date: 2006-05-09
Classification: H04N

Abstract:
1. A multichannel video processing unit comprising: a decoding section for sequentially selecting a bit stream from a plurality of bit streams each including encoded data of an image of one channel, decoding the selected bit stream by one frame each, and outputting resultant decoded data; a vertical filtering section for sequentially selecting a channel from a plurality of channels corresponding to the images decoded by the decoding section, performing vertical processing for the decoded data corresponding to the selected channel, and outputting resultant vertically-processed data; a horizontal filtering section for sequentially selecting a channel from the plurality of channels according to the position at which the image is to be displayed, performing horizontal processing for the vertically-processed data corresponding to the selected channel, and outputting resultant horizontally-processed data; and an output processing section for generating a video signal for display of images of a plurality of channels by synthesizing the horizontally-processed data and outputting the generated video signal, wherein the vertical filtering section starts the processing for one frame after receiving the next vertical synchronizing signal from the start of the processing for the frame by the decoding section, and the horizontal filtering section and the output processing section start the processing for the frame after the next vertical blanking interval from the start of the processing for the frame by the vertical filtering section, and wherein the order of the channels to be processed for a frame by the vertical filtering section is the same as the order in the processing for the same frame by the decoding section.