Digital signal encoding and decoding apparatus

Details Digital signal encoding and decoding apparatus Digital signal encoding and decoding apparatus

1988-09-30

1990-07-03

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

Adaptive coding

358 13, H03M 700, H04N 1104

Patent

active

049395157

ABSTRACT:
Digital data is conveyed along with the analog signal by selectively quantizing the analog signal in response to the level of each of the digital bits to be sent. By determining which quantization function was used, a decoder may recover the embedded digital data.

REFERENCES:
patent: 3304372 (1967-02-01), Filipowsky et al.
patent: 4134134 (1979-01-01), Lux
patent: 4237484 (1980-12-01), Brown et al.
patent: 4302775 (1981-11-01), Widergren et al.
patent: 4394774 (1983-07-01), Widergren et al.
patent: 4401854 (1983-08-01), Steele
patent: 4495620 (1985-01-01), Steele et al.
patent: 4580162 (1986-04-01), Mori

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