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. 24, 2001
Filed:
Oct. 02, 1997
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to a method and a device for controlling access to a disc storage device comprising a plurality of discs storing a plurality of second data obtained by dividing first data, the disc being configured such that a number of sectors included at tracks in an outer section of the disc is greater than a number of sectors included at tracks in an inner section of the disc. In particular, the method and device for controlling disc array decides the discs storing each of a plurality of the second data, and information comprising the addresses of the second data on the disc and the size of each item of a plurality of the second data in such a manner that the time required for accessing each of a plurality of the second data stored in the disc device becomes equal, with access then being carried out to the disc device on the basis of the decided information. Further, each item of information is decided on the basis of a gap expressed by angular differences between the heads and ends of the second data at the time of arrangement of the second data on the discs. In this way, the overhead at the time of accessing data on the disc device can be reduced, the time required for reading and writing data can be fixed and input/output time can be easily estimated.