Method and apparatus for run-length encoding using special long-

Details Method and apparatus for run-length encoding using special long- Method and apparatus for run-length encoding using special long-

1996-06-26

1998-05-12

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

H03M 700

Patent

active

057512310

ABSTRACT:
Magnitudes of runs of constant signal value in signals representative of physical activities or objects are determined. The signals are converted to fixed-length run-length (RL) codes, wherein each long run in the signals that is longer than the largest run length represented by a single RL code is represented by at least one no-change RL code and an RL code representing a remainder value, wherein the no-change RL code represents a portion of the long run and also indicates that the immediately following RL code corresponds to a continuation of the long run. In a preferred embodiment, binary images are run-length encoded and the resulting run-length codes are subjected to variable-length encoding using structured Huffman tables.

REFERENCES:
patent: 3739085 (1973-06-01), Rosen et al.
patent: 3830963 (1974-08-01), Garcia
patent: 4121259 (1978-10-01), Preuss et al.
patent: 4441208 (1984-04-01), Iida
patent: 4542413 (1985-09-01), Rallapalli et al.

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