Inserting a high resolution still image into a lower resolution video stream
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United States of America Patent
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Sep 7, 2010
Grant Date -
Mar 9, 2006
app pub date -
Sep 9, 2004
filing date -
Sep 9, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A high resolution still image is inserted into a stream of lower resolution video. The lower resolution video stream is a compressed video stream having I-frames. One of the I-frames is a lower resolution version of which a higher resolution image is desired. The I-frame is decoded and decompressed and zoomed up in size to the high resolution size. The zoomed up I-frame is subtracted from the original high resolution still image to generate a difference frame called an X-frame. The X-frame is compressed and inserted into the video stream. The high resolution image can be recovered by extracting the X-frame from the hybrid video stream, and reversing the process used to generate the X-frame. The functionality for regenerating the high resolution image can be realized in software as part of a viewer program, or can be realized as part of a camera, television, or other video display device.
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