Method and apparatus for bit rate reduction

Details Method and apparatus for bit rate reduction Method and apparatus for bit rate reduction

1987-09-11

1990-02-13

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

To or from bit count codes

341 59, 3582611, H03M 746

Patent

active

049010751

ABSTRACT:
A method and apparatus for coding a signal for transmission in order to achieve improved reduction in the bit rate. A signal is a transform coded in order to form a sequence of zero coefficients and non-zero coefficients, and run lengths of zero coefficients together with preceding or subsequent non-zero coefficients are grouped as events and coded.

REFERENCES:
patent: 4101934 (1978-07-01), Fukuoka
patent: 4316222 (1982-02-01), Subramaniam
patent: 4394774 (1983-07-01), Widergren et al.
patent: 4698672 (1987-10-01), Chen et al.

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