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:
Nov. 03, 2009
Filed:
Feb. 27, 2008
James P. Schneider, Raleigh, NC (US);
James P. Schneider, Raleigh, NC (US);
Red Hal, Inc., Raleigh, NC (US);
Abstract
Techniques for improving encoding and decoding data are described herein. According to one embodiment, in response to a symbol retrieved from an input stream having a sequence of symbols, it is determined whether a current context can encode the retrieved symbol. A code representing an escape token is emitted to a code stream if the current context cannot encode the retrieved symbol. The process is escaped from the current context to a parent context of the current context if the current context is not a root context. The retrieved symbol is emitted to a literal stream if the current context is a root context, where the code stream and the literal stream are to be compressed and decoded by a decoder.