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:
Jan. 29, 2013
Filed:
Jun. 02, 2011
Tsutomu Ishimoto, Tokyo, JP;
Junichi Horigome, Tokyo, JP;
Tsutomu Ishimoto, Tokyo, JP;
Junichi Horigome, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A recording device includes: a rotation driving unit that rotates an optical medium having a reference face and a recording layer, at a constant velocity; a light irradiating unit that irradiates the optical recording medium with first and second light through a common object lens; an infocus position adjusting unit that performs adjustment to focus; a light receiving unit that receives reflection light from the reference face; a reproducing clock generating unit that generates a reproducing clock on the basis of a light reception signal; a radial position detecting unit that detects the radial positional information on the basis of the light reception signal and the reproducing clock positional information; a frequency adjusting unit that changes a frequency of an input reference signal; and a recording unit that performs mark recording on the recording layer using the signal obtained by the frequency adjusting unit as a recording clock.