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. 03, 2002
Filed:
Oct. 28, 1999
Johannes H. M. Korst, Eindhoven, NL;
Pascal F. A. Coumans, Geleen, NL;
KoninklijkePhilips ElectronicsN. V., Eindhoven, NL;
Abstract
The invention relates to a storage system ( ) such as a video on demand system, comprising a plurality of storage units ( ) such as disk drives. Each one of the storage units ( ) has a number of storage zones ( ) with mutually different expected data retrieval times. Data is stored in data units, with each data unit comprising N blocks, wherein N≧2. The blocks of a data unit are distributed over the storage units ( ). The blocks comprise redundant information such that any one of a plurality of selections comprising N−K of the N blocks suffices for retrieving the data unit, wherein K≧1. For retrieving a data unit from the storage units ( ), a reader determines which N−K of the N blocks to retrieve on the basis of a selection procedure. In accordance with the invention, the selection procedure takes into account the expected data retrieval times in order to optimize bandwidth utilization.