Band-division signal processing system

Details Band-division signal processing system Band-division signal processing system

1997-05-13

1999-06-22

Britton, Howard

Television

Bandwidth reduction system

Format type

348429, 348432, H04N 726

Patent

active

059147520

ABSTRACT:
A band-division signal processing system includes a coding unit and a decoding unit. The coding unit includes: an extracting unit for extracting a part of an original signal to produce a partial band signal; a first quantizer for quantizing the partial band signal to produce a quantized partial band signal; a subtracter for subtracting the quantized partial band signal from the original signal to produce a differential signal; and a first output unit for outputting the partial band signal and the differential signal. The decoding unit includes: a second quantizer having an identical configuration to the first quantizer and for quantizing the partial band signal outputted from the first output unit to produce the quantized partial band signal; an adder for adding the quantized partial band signal produced by the second quantizer to the differential signal outputted from the first output unit to produce the original signal; and a second output unit for outputting the original signal produced by the adder.

REFERENCES:
patent: 5508746 (1996-04-01), Lim
patent: 5742343 (1998-04-01), Haskell

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