The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Jul. 22, 1999
Robert Jeff Heath, San Diego, CA (US);
Hughes Electronics Corporation, El Segundo, CA (US);
Abstract
A method, and apparatus for accomplishing the method, of compressing data for transmission over a communications channel involves receiving one or more data symbols comprising a current data string and at least one subsequent symbol; matching a longest previous data string with the current data string, the longest previous data string being defined by a code word; placing the code word into a compressed data stream; and extending the current data string by a plurality of symbols. Additional steps include: placing, in the event the current data string is the second occurrence of a two symbol string, a length field indicative of the plurality of symbols into the compressed data stream; placing, in the event the current data string is not the second occurrence of the two symbol string, a multi-symbol extension string signaling code word indicative of the plurality symbols into the compressed data stream; and transmitting the compressed data stream through the communications channel.