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. 21, 2009
Filed:
Mar. 30, 2005
Akira Shirota, Tokorozawa, JP;
Kunihiko Horikawa, Tokorozawa, JP;
Hiroyuki Uchino, Tokorozawa, JP;
Yoshio Sasaki, Tokorozawa, JP;
Shoji Taniguchi, Tokorozawa, JP;
Eiji Muramatsu, Tokorozawa, JP;
Akira Shirota, Tokorozawa, JP;
Kunihiko Horikawa, Tokorozawa, JP;
Hiroyuki Uchino, Tokorozawa, JP;
Yoshio Sasaki, Tokorozawa, JP;
Shoji Taniguchi, Tokorozawa, JP;
Eiji Muramatsu, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
The present invention provides a recording pulse generating apparatus capable of forming a recording pit having a proper shape even at the time of ultra-high-speed recording of, for example, 8×recording or higher. A recording controllerfor generating recording pulse signals having lengths corresponding to ten kinds of lengths of pits formed at the time of recording information has a recording controllerfor generating the recording pulse signals so that the amplitude of a recording pulse signal corresponding to a pit having a length of 4T changes from a first amplitude to a second amplitude, and generating the recording pulse signals so that the amplitude of a recording pulse signal corresponding to a pit having a length of 5T or longer changes from a third amplitude to a fourth amplitude and further changes to a fifth amplitude.