Two stage run and string data compressor providing doubly compre

Details Two stage run and string data compressor providing doubly compre Two stage run and string data compressor providing doubly compre

1989-08-09

1990-11-20

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

Unnecessary data suppression

341 95, 341 60, 375122, 358426, H03M 730

Patent

active

049714074

ABSTRACT:
A data compression/decompression system employs two stages of data compression. Information and/or character data is first formatted into M-bit width digital data characteristics for input to the first stage of the data compression system which comprises an expanding run length encoder having N-bit width output character where N>M and the number of M-bit width characters is greater than the number of N-bit width characters. The output of the expanding run length encoder is applied directly to a compatible adaptive string matching second stage data compression encoder of the type which is not degraded or affected by the input.
When the input data stream to the two stage system is not of a known format or provided with leader or header bit character width information, a bit analyzer and a chopper are provided in a data stream to prepare the data stream in a bit character width format which matches the input of the expanding run length encoder.

REFERENCES:
patent: 4464650 (1984-08-01), Eastman et al.
patent: 4523276 (1985-06-01), Maejima et al.
patent: 4558302 (1985-12-01), Welch
patent: 4684923 (1987-08-01), Koga
patent: 4866440 (1989-09-01), Tsukiyama et al.

Affiliated with

Also associated with

Rating

Two stage run and string data compressor providing doubly compre does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two stage run and string data compressor providing doubly compre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two stage run and string data compressor providing doubly compre will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-450887