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:
Jan. 18, 2011
Filed:
Aug. 05, 2009
Takuya Tsukagoshi, Sagamihara, JP;
Jiro Yoshinari, Tokyo, JP;
Hideaki Miura, Tokyo, JP;
Tetsuro Mizushima, Moriguchi, JP;
Takuya Tsukagoshi, Sagamihara, JP;
Jiro Yoshinari, Tokyo, JP;
Hideaki Miura, Tokyo, JP;
Tetsuro Mizushima, Moriguchi, JP;
TDK Corporation, Tokyo, JP;
Abstract
A holographic multiplex recording method which can keep a recording data rate constant and equalize nonuniformity in recording due to vibrations or the like, and a holographic recording apparatus and a holographic recording medium, which employ the method. In a process of multiplex-recording information, the time of exposure to a laser beam per data page is kept constant, and the laser output power of the laser beam is increased in accordance with a decrease in recording sensitivity of the holographic recording medium.