Patent ID: 6384868
Filing Date: 2002-05-07
Classification: H04N

Abstract:
a multi-screen display apparatus comprising:a first synchronous video processing means for synchronously video processing a video signal of a first input system; a second synchronous video processing means for synchronously video processing a video signal of a second input system; a first field determining means for determining whether a first video signal output from the first synchronous video processing means is a first field or an second field; a second field determining means for determining whether a second video signal output from the second synchronous video processing means is a first field or second field; a selection switching means for selecting and alternately outputting one of two sets of signals synchronously video-processed by the first and second synchronous video processing means; a write means for outputting the first video signal as a write video signal when the first video signal has been selected by said selection switching means and said first field determining means has determined that the first video signal output from said first synchronous video processing means is the first field, and outputting the second video signal as a write video signal when the second video signal has been selected by said selection switching means and said second field determining means has determined that the second video signal output from said second synchronous video processing means is the first field; a storing means for storing the first or second video signal alternately output from said write means; and a read means for reading the video signal written to the storing means according to a predetermined synchronous signal.