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:
Dec. 02, 2008
Filed:
Dec. 28, 2006
Balakrishna Raghavendra Iyer, San Jose, CA (US);
Piotr M. Plachta, Toronto, CA;
Wolfram Sauer, Austin, TX (US);
Steven W. White, Austin, TX (US);
Balakrishna Raghavendra Iyer, San Jose, CA (US);
Piotr M. Plachta, Toronto, CA;
Wolfram Sauer, Austin, TX (US);
Steven W. White, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Some aspects of the invention provide methods for creating an in-memory physical dictionary for data compression. To that end, in accordance with aspects of the present invention, a new heuristic is defined for converting each of the plurality of logical nodes into a corresponding physical node forming a plurality of physical nodes; then place each of the physical nodes into the physical dictionary while traversing the dictionary tree in descending visit count order. Each physical node is placed in its nearest ascendant's cache-line with sufficient space. If there is no space in any of the ascendant's cache-line, then the physical node is placed into a new cache-line, unless a pre-defined packing threshold has been reached, in which case the physical node is placed in the first available cache-line.