Television – Format – Adapted to reduce noise or for frequency modulation
Patent
1993-01-29
1994-11-08
Groody, James J.
Television
Format
Adapted to reduce noise or for frequency modulation
348471, 348437, 375 34, H04N 713
Patent
active
053631412
ABSTRACT:
Encoded blocks of video information are selected for transmission at a plurality of channel rates based on the corresponding location of the portions of the video image represented by the encoded blocks. Each encoded block is designated an image type which determines its transmitted channel rate. The image types are associated with spatial positions of a video image such that encoded blocks within a first area of the video image are designated a first image type and encoded blocks within a second area of the image are designated a second image type. In general, data blocks representing the central portion of the video image are transmitted at a channel rate having less susceptibility to noise or other degradation, thereby ensuring that such portion can be received in fringe areas.
REFERENCES:
patent: 5105442 (1992-04-01), Wei
patent: 5128756 (1992-07-01), Johnston
patent: 5164963 (1992-11-01), Lawrence
patent: 5243419 (1993-09-01), Faryar et al.
Faryar Alireza F.
Kustka George J.
Mailhot John N.
Webb, III Charles A.
AT&T Bell Laboratories
Groody James J.
Lee Michael H.
Simons Michele L.
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