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:
Apr. 22, 2008
Filed:
Sep. 26, 2003
Stephen Rodney Cumpson, Eindhoven, NL;
Stephen Rodney Cumpson, Eindhoven, NL;
Koninklijke Philips Electronics N. V., Eindhoven, NL;
Abstract
A method of retrieving data includes caching data stored in allocation units of a memory (), preferably a harddisk drive system, of which retrieval incurs a performance penalty. An example of this is data in a spare sector (), located in a spare area () on the harddisk platter (). The cache memory () is, however, a precious commodity. The need for memory space may be reduced by only caching data in spare sectors in which data belonging to a file that is to be retrieved is stored. Also the impact of other kinds of causes of performance penalties may be solved in this way, like those caused by soft defects and fragmentation of files.