System to reduce distortion due to coding with a...

Details System to reduce distortion due to coding with a... System to reduce distortion due to coding with a...

2007-01-16

2007-01-16

Tran, Khanh (Department: 2634)

Pulse or digital communications

Pulse code modulation

Correcting or reducing quantizing errors

C375S240030, C375S240220, C375S244000, C375S245000

Reexamination Certificate

active

09733567

ABSTRACT:
A distortion removal system for reducing the quantization distortion that results from quantization of a signal by sample-by-sample quantization techniques is disclosed. The distortion removal system uses the signal previously quantized with the sample-by-sample quantization techniques to determine an expected quantization distortion. The expected quantization distortion is determined for each of a plurality of frames of the signal. The expected quantization distortion is removed from each of the frames of the signal.

REFERENCES:
patent: 4467346 (1984-08-01), Mori
patent: 4680758 (1987-07-01), Kumazaki et al.
patent: 5959562 (1999-09-01), Wiesbauer

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