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.

Date of Patent:
Jun. 13, 2000

Filed:

Apr. 02, 1997
Applicant:
Inventors:

Yoshiyuki Akiyama, Kanagawa, JP;

Shinichiro Iimura, Kanagawa, JP;

Hiroshi Ogawa, Kanagawa, JP;

Kazuo Kuroda, Saitama, JP;

Toshio Suzuki, Saitama, JP;

Akiyoshi Inoue, Saitama, JP;

Shouji Taniguchi, Saitama, JP;

Minemasa Ota, Yamanashi, JP;

Assignees:

Sony Corporation, Tokyo, JP;

Pioneer Electronic Corporation, Saitama-ken, JP;

Pioneer Video Corporation, Yamanashi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 50 ; 369 54 ; 3692753 ; 3692754 ;
Abstract

An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits. The rotation of the optical recording medium is controlled by the wobbled signals detected from the groove and the position on the optical recording medium of the recording signal is detected by the pit signal detected from the pits.


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