Television – Bandwidth reduction system – Data rate reduction
Patent
1996-05-21
1997-12-09
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
386109, 386112, 386124, H04N 712, H04N 1102, H04N 1104
Patent
active
056965583
ABSTRACT:
A coding apparatus for reduction and variable-length-coding of digital image data, wherein the image data is once variable-length-coded to obtain a variable length coded data. The variable length coded data is coded again to produce an amount of data. The amount of data is used to select an optimum quantization level. The variable length coded data is then coded again with the optimum quantization level to maximize a recording density of the twice coded data on a recording medium.
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S. Borgers et al.; "An experimental Digital VCR With 40 MM Drum, Single Actuator, and DCT Based Bit-Rate Reduction", IEEE Transactions on Consumer Electronics, Aug. 1988.
"On Adaptive DCT Techniques for Digital Video Recording"; IEEE Proc. 7th Int. Conference on Video, Audio and Data Recording; Mar. 1988.
Boccio Vincent F.
Britton Howard W.
Mitsubishi Denki & Kabushiki Kaisha
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