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:
Aug. 07, 2001
Filed:
Nov. 19, 1998
Morihiro Murata, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
In an optical disk having various information recorded thereon on a frame-by-frame basis, each of the frames being organized in a predetermined format comprising a main channel where data are recorded and a subcode providing additional information including recorded positions of the data, table-of-contents or TOC information for the data recorded in the main channel is contained in the main channel of the optical disk. When a subcode block representing a single unity of information is formed of a plurality of the subcodes belonging to 98 EFM frames, the table-of-contents information is recorded in the main channels of the 98 frames in such a manner that every piece of information needed as the table-of-contents information is fully accommodated in a predetermined data block made up of the data of the main channels belonging to the 98 frames. Thus, there can be provided an optical disk and optical disk reproduction system which permit high-speed readout of the TOC information.