Television – Bandwidth reduction system – Data rate reduction
Patent
1994-05-19
1996-01-16
Kostak, Victor R.
Television
Bandwidth reduction system
Data rate reduction
348438, H04N 712
Patent
active
054852153
ABSTRACT:
A system and method for filtering a digital signal having a relatively high data rate uses circuitry which operates at a lower data rate. The filter includes an input section which receives the input signal and which divides the input signal into a plurality of contiguous segments. The system also includes a first filter which receives samples representing one of the plurality of segments and adjacent samples from the next contiguous one of the segments and which filters all of the received samples to produce a first filtered signal. A second filter receives samples of the next contiguous segment and filters those samples to produce a second filtered signal. The filtered signals are combined by providing the samples of the second filtered signal immediately after the samples of the first filtered signal to produce a filtered output signal. The invention also relates to using respective timing signals associated with the segments to determine when the samples of the first and second filtered signals are provided.
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H. Sun, "Hierarchical Decoder for MPEG Compressed Video Data", IEEE Transactions on Consumer Electronics, vol. 39, No. 3, pp. 559-564 (Aug. 1993).
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A. Netravali et al., "A High Quality Digital HDTV CODEC", IEEE Transactions on Consumer Electronics, vol. 37, No. 3, pp. 320-330 (Aug. 1991).
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Inoue Shuji
Meyer Edwin R.
Naimpally Saiprasad V.
Phillips Larry
Kostak Victor R.
Matsushita Electric Corporation of America
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