Device for transmitting a high definition digital picture signal for use by a lower definition picture signal receiver
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United States of America Patent
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Jul 8, 1997
Issued Date -
N/A
app pub date -
May 2, 1996
filing date -
Jul 16, 1993
priority date (Note) -
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Abstract
By compressing HDTV pictures, they can be recorded on digital SDTV video recorders. Such recorders are widely used in professional studios. The invention relates to a device for formatting the compressed HDTV signal in such a way that the DC values of successive 8*8 picture blocks are processed by SDTV recorders as a smaller but recognizable SDTV sub-picture. Low-cost editing of HDTV programs with standard equipment (SDTV recorders and receivers) is possible with such a device, while the edited final result can be transmitted as a HDTV signal without any further processing operation.
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