Patent ID: 6621526
Filing Date: 2003-09-16
Classification: H04N

Abstract:
A colorimetry converting apparatus, comprising:input means for receiving a plurality of input video signals respectively having different first colorimetries; synchronizing means for synchronizing said input video signals with a single vertical synchronizing signal for a display monitor; colorimetry converting means for converting said synchronized video signals to a single output video signal having a second colorimetry; wherein each of said input video signals includes a luminance signal and color difference signals and said colorimetry converting means includes a first switch for outputting a part of said input video signals, first converting means converting said part of synchronized video signals from said first switch to RGB-color signals in accordance with said colorimetries of said part of synchronized video signals from said first switch respectively, a second switch for outputting one of said RGB-color signals, and second converting means for converting said RGB-color signal to said single video signal including a luminance signal and color difference signals; said colorimetry converting apparatus further comprising area signal generation means for generating an area signal indicative of at least a partial area of a frame of said single output video signal, switching signal generation means for generating first to third switching signals respectively supplied to said first switch, said first converting means, and said second switch such that one of said synchronized video signals is converted into said single video signal at said partial area and another one of said synchronized video signals is converted at outside of said partial area in accordance with said area signal.