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:
Dec. 18, 2007
Filed:
Dec. 26, 2003
Tomiji Tanaka, Saitama, JP;
Mikio Sugiki, Kanagawa, JP;
Shigeo Kobayashi, Chiba, JP;
Koji Ishioka, Kanagawa, JP;
Kazuo Takahashi, Tokyo, JP;
Toshiyuki Nakagawa, Kanagawa, JP;
Tomiji Tanaka, Saitama, JP;
Mikio Sugiki, Kanagawa, JP;
Shigeo Kobayashi, Chiba, JP;
Koji Ishioka, Kanagawa, JP;
Kazuo Takahashi, Tokyo, JP;
Toshiyuki Nakagawa, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In the hologram recording and hologram-record reproduction using a one-dimensional optical modulator, the one-dimensional optical modulator where a plurality of light-modulating pixels are arranged modulates a laser beam to record a digital-data signal on a hologram recording medium, and part of the light-modulating pixels record sync signals in two or more positions on the hologram recording medium with retaining a predetermined interval, thereby improving hindrance to reproduction or readout of information recorded on the hologram recording medium, a decrease in S/N, and so on due to deformation or the like of the hologram recording medium.