Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-02-27
1992-05-05
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358141, 358142, 375 25, 375 27, 3701101, H04N 712, H04N 700, H04N 704, H04N 52
Patent
active
051112922
ABSTRACT:
Apparatus for encoding/decoding a HDTV signal for e.g. terrestrial transmission includes a priority selection processor for parsing compressed video codewords between high and low priority channels for transmission. A compression circuit responsive to high definition video source signals provides hierarchically layered codewords CW representing compressed video data and associated codewords T. defining the types of data represented by the codewords CW. The priority selection processor, responsive to the codewords CW and T, counts the number of bits in predetermined blocks of data and determines the number of bits in each block to be allocated to the respective channels. Thereafter the processor parses the codewords CW into high and low priority codeword sequences wherein the high and low priority codeword sequences correspond to compressed video data of relatively greater and lesser importance to image reproduction respectively.
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Acampora Alfonse A.
Kuriacose Joseph
Zdepski Joel W.
General Electric Company
Groody James J.
Herrmann Eric P.
Kurdyla Ronald H.
Lee Michael H.
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