Television – Bandwidth reduction system – Data rate reduction
Patent
1995-07-11
1997-02-25
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348423, H04N 726
Patent
active
056063709
ABSTRACT:
A sync restoring apparatus includes a first-in-first-out (FIFO) memory for storing the variable-length-coded data and sequentially outputting a predetermined number of bits of data according to a read signal, a decoder for variable-length-decoding the applied data, outputting the block end signal obtained by the decoding operation, and generating a data request signal every time the number of bits of data used in the decoding operation becomes a predetermined number of bits, an error detector for generating an error signal when the number of the block end signals which are not decoded at the exact variable-length-decoding time is not less than a predetermined limit value based on the data format, and an interfacer coupled to transmit the data applied from the FIFO memory according to the read signal, and if the error signal is not generated in the error detector, generating a read signal according to the data request signal generated from the variable-length-decoder, while if the error signal is generated in the error detector, generating read signals until error-detected second block data is wholly read from the FIFO memory, independently of the data request signal, and a controller for controlling the decoder so as to stop the decoding operation when the error signal output from the error detector is applied to the controller, while when the second block data is supplied to the decoder, the decoding operation is performed.
REFERENCES:
patent: 5280349 (1994-01-01), Wang
patent: 5493414 (1996-02-01), Inoue
Britton Howard W.
Samsung Electronics Co,. Ltd.
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