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:
Nov. 26, 1996
Satoshi Otsuka, Kanagawa, JP;
Yoshikatsu Niwa, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disk shaped recording medium, drive apparatus and method for driving a medium divided into at least a recordable area and a reproduction only area, are disclosed. Address conversion is carried out by a conversion table so that the leading portion of a logical block address (LBA) when an optical disc is viewed from the host computer side is caused to correspond to the leading physical block address PBA1=RAM_START of a random access memory (RAM) area of the outermost circumferential side of the optical disc. Thus, reproduction can be started from the leading portion of a RAM area disposed at the innermost circumferential side. Even if a read only memory (ROM) area is disposed at the outermost circumferential side, this optical disc can be used as boot device. In addition, since the ROM area can be disposed at the outermost circumferential side, data transfer speed of the ROM area is permitted to be high data transfer speed in an optical disc employing a zone constant angular velocity (CAV) system.