Method for eliminating errors in block parameters

Details Method for eliminating errors in block parameters Method for eliminating errors in block parameters

1988-04-25

1991-10-01

Baker, Stephen M.

Excavating

371 30, 381 31, H03M 302, H03M 1300

Patent

active

050540254

ABSTRACT:
Some signal coding techniques involve quantizing the signal samples using a signal derived parameter to set the quantizer step. This parameter is then used in the decoding process to synthesize the original signal back to its analog form. Any error affecting the integrity of said parameter, between coding and decoding, would affect the synthesized signal. The method proposed here for protecting data integrity involves, at the encoding site, forcing the parameter to a fixed parity. Then, before synthesizing operations are performed, any parameter failing a parity control test is discarded and replaced with a parameter derived from available valid parameter(s).

REFERENCES:
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patent: 4464783 (1984-08-01), Beraud et al.
patent: 4792953 (1988-12-01), Pasdera et al.
patent: 4802171 (1989-01-01), Rasky
Bhargava, V., "Forward Error Correction Schemes for Digital Communications", IEEE Communications Magazine, Jan. 1983, pp. 11-19.
Haykin, S., Digital Communications, John Wiley & Sons, 1988, pp. 210-218, 379-390.
Tribolet et al., "A Modified Adaptive Transform Coding Scheme with Post-Processing-Enhancement", ICASSP '80 Proceedings, pp. 336-339.
McLaughlin et al., "Speech and Channel Coding for Digital Land-Mobile Radio", IEEE J. Sel. Areas in Comm., vol. 6, No. 2, Feb. 1988, pp. 332-345.

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