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:
Jun. 24, 2003
Filed:
Dec. 17, 2001
Shigeaki Furukawa, Kadoma, JP;
Kenichi Nishiuchi, Hirakata, JP;
Yuuichi Kamioka, Katano, JP;
Norifumi Oda, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An optical recording device comprises: a basic pulse generator including a starting-end pulse generation circuit a burst gate generation circuit and an end pulse generation circuit a data-length detector including a front mark detector a front space detector a recording mark detector a back space detector and a back mark detector a timing controller including a starting-end pulse selecting circuit a starting-end starting position setting circuit a starting-end pulse delaying circuit an end pulse selecting circuit an end starting position setting circuit and an end pulse delaying circuit a pulse synthesizer including an AND gate and an OR gate and a laser driver including an erasing current source a recording current source and a switch