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:
Jul. 24, 2001
Filed:
Apr. 11, 2000
Yamaha Corporation, Hamamatsu, JP;
Abstract
CLV-type recordable optical disk includes a plurality of tracks which are formed in such a manner that 2&pgr;Tp/&lgr; substantially equals an even-number multiple of 0.5 where Tp is a track pitch and &lgr; is a wavelength of a track wobble. Each of the tracks is divided into a plurality of ECC blocks, and each of the ECC blocks is composed of 16 sectors. Each of the sectors is composed of 26 sync frames. In each of the sectors of the track, information recording areas are set normally in even-numbered sync frames. However, in each portion where there would occur overlap in the information recording area, in the radial direction of the disk, between the track and an adjoining track located inward of the track, the information recording areas are set in odd-numbered sync frames. One piece of address information is divided into a plurality of address information elements and recorded dispersedly in the sync frames across a plurality of the sectors. With such arrangements, the optical disk can minimize adverse influences that would result from cross-talk between wobble signals from the adjoining tracks.