Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-03-19
1991-11-05
Shepperd, John W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358136, H04N 713, H04N 7133, H04N 7137
Patent
active
050634445
ABSTRACT:
A high definition television system that is characterized by low transmission bandwidth is achieved by removing redundancies in the signal, encoding the remaining signals, and transmitting the encoded signal in a manner that is most compatible with the applicable standards. In the encoding, groups of signals to be sent are mapped to codebook vectors and the identities of the codebook vectors are sent together with those signals of the groups of signals that correspond to the codebook vectors. To insure that the total number of signals that are sent does not exceed the available capacity, the signals are sorted by a selected importance parameter and assigned for transmission in descending order of importance until the capacity is exhausted. Signals that are not assigned for transmission are discarded.
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Knauer Scott C.
Netravali Arun N.
Petajan Eric D.
Safranek Robert J.
Westerink Peter H.
AT&T Bell Laboratories
Brendzel Henry T.
Shepperd John W.
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