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, 2012
Filed:
Aug. 11, 2009
Tsutomu Kurihara, Kanagawa, JP;
Motoi Kimura, Kanagawa, JP;
Koichi Yokoyama, Kanagawa, JP;
Toshiaki Yoshihara, Kanagawa, JP;
Tsutomu Kurihara, Kanagawa, JP;
Motoi Kimura, Kanagawa, JP;
Koichi Yokoyama, Kanagawa, JP;
Toshiaki Yoshihara, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A laser driving device includes a storage unit that stores signal patterns for recording-waveform control representing level information of each divided driving signal to drive a laser device on a space and a mark based on the divided driving signals. Also, it includes a pulse generator that generates the reference pulse and the switching pulse based on a first transmission signal and a second transmission signal. The first transmission signal contains timing information for acquiring a reference pulse that represents a timing of repetitively switching between the space and the mark. The second transmission signal contains timing information for acquiring a switch pulse that represents a timing of switching the signals. Among level information for each of the signals in the storage, reference level information is read together with the reference pulse. Other level information after the reference level information is sequentially read for each switching pulse.