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:
Feb. 19, 2008
Filed:
May. 19, 2003
Multiplex recording type hologram recording device, method, hologram reproduction device, and method
Kazuo Kuroda, Saitama, JP;
Satoshi Sugiura, Saitama, JP;
Shuuichi Yanagisawa, Saitama, JP;
Satoru Tanaka, Saitama, JP;
Yoshihisa Itoh, Saitama, JP;
Akihiro Tachibana, Saitama, JP;
Yoshihisa Kubota, Saitama, JP;
Kazuo Kuroda, Saitama, JP;
Satoshi Sugiura, Saitama, JP;
Shuuichi Yanagisawa, Saitama, JP;
Satoru Tanaka, Saitama, JP;
Yoshihisa Itoh, Saitama, JP;
Akihiro Tachibana, Saitama, JP;
Yoshihisa Kubota, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A hologram record apparatus () includes a parameter set device (), a move device (), and a control device (). The parameter set device () modifies parameters for multiple recordings such as a record angle and a focal depth in relation to at least one of signal light (L) and reference light (L) and can fix the parameters. The move device () relatively moves the focus position of the signal light and the reference light in the direction along the record surface of a hologram record medium. The control device () performs control so that the parameter for the last recording used for recording at the m-th focus position is used as the parameter for the first recording at the m+1-th focus position.