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:
Sep. 08, 1998
Filed:
Dec. 09, 1996
Ryo Ando, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A recording device for a disc-like recording medium having some recording tracks formed by grooves wobbled in response to their absolute positional information and the track including a linking area for controlling laser power, the recording device comprising an information reader for reading information from the disc-like recording medium, a frequency information extractor for extracting groove frequency information from information extracted by the information reader, a frequency measurer for measuring the frequency of the frequency information extracted by the frequency information extractor, a recorder for performing a recording operation in respect to the disc-like recording medium, a discriminator for discriminating whether a rotating speed of the disc-like recording medium has reached a suitable rotation velocity or not, and a controller for controlling a laser power at the linking area in advance for a recording operation if the rotating speed has reached a suitable rotation velocity in accordance with a result of the discriminator.