Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-06-15
1991-11-26
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, 358135, 358136, H04N 7137
Patent
active
050687247
ABSTRACT:
A method and apparatus are provided for processing digital video signals for transmission in a compressed form. A set of pixel data is compressed without motion compensation to provide a first compressed video signal. The pixel data is compressed using motion compensation to provide a second compressed video signal. The data in the first and second compressed video signals is quantified. A comparison is made to determine which of the signals contains the least data. Successive sets of pixel data are sequentially compressed and quantified and the compressed video signal having the least data for each particular set is selected. The selected signals are encoded to identify them as motion compensated or non-motion compensated signals, and combined to provide a compressed video signal data stream for transmission. Apparatus for receiving and decoding the signals is also disclosed.
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Essserman Jim
Krause Edward A.
Liu Vincent
Paik Woo H.
Britton Howard W.
General Instrument Corporation
Lipsitz Barry R.
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