Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1996-08-09
2000-06-06
Britton, Howard
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
348422, 382240, 382254, H04N 712, H04N 730
Patent
active
060728302
ABSTRACT:
A method and an apparatus for encoding an image signal. The apparatus includes an acquisition module disposed to receive the image signal. A first processor is coupled to the acquisition module. At least one encoder processor is coupled to the first processor. The at least one encoder processor produces an encoded image signal under control of the first processor. The method includes the steps of converting an input image signal into a predetermined digital format and transferring the digital format image signal to at least one encoder processor. The method further includes the step of applying, at the at least one encoder processor, a hierarchical vector quantization compression algorithm to the digitized image signal. At the next step, a resultant encoded bit stream generated by the application of the algorithm is collected. The method and apparatus of the present invention may be used in conjunction with an ordinary modem to transmit and/or receive audio, video sequences or still images.
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Baldassari Mark M.
Hodges Chris J. M.
Proctor John J.
Richardson Craig H.
Smith David L.
Britton Howard
U.S. Robotics Access Corp.
Vo Tung
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