Binary data compression/decompression apparatus and method of operation for use with modem connections
US6191711A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system includes an input, a character set mapping function and a character set compression function. The input receives binary data that includes a plurality of binary data bits that may be organized into a plurality of binary data bytes. The character set mapping function maps the binary data bits into a predetermined character set to produce a plurality of characters. The character set compression function compresses the plurality of characters using a character set compression algorithm to produce a plurality of compressed characters. After compression of the character set data, the plurality of compressed characters may be modulated via a modem and transmitted across a data link to a receiving location. At the receiving location, a demodulator receives the modulated data and demodulates the modulated data to produce the plurality of compressed characters. Then, a character set decompression function decompresses the plurality of compressed characters to produce a plurality of characters. A binary data extraction function then extracts the binary data from the plurality of characters. In mapping the binary data bits into the predetermined character set to produce the plurality…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.