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:
Sep. 02, 2014
Filed:
Mar. 13, 2012
Tomoyasu Takaoka, Kyoto, JP;
Atsushi Nakamura, Osaka, JP;
Tetsuya Akiyama, Okayama, JP;
Naoyasu Miyagawa, Hyogo, JP;
Tomoyasu Takaoka, Kyoto, JP;
Atsushi Nakamura, Osaka, JP;
Tetsuya Akiyama, Okayama, JP;
Naoyasu Miyagawa, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
When the power of the write pulse is taken as the peak power and the power of the bottom pulse is taken as the bottom power, the power setting device () sets the power of each pulse in the recording pulse train such that the peak power PwN of the Nth information layer which is closest to the light entry surface of the optical recording medium (), the bottom power PbN of the Nth information layer, the peak power PwM of the Mth information layer (where M is an integer such that N>M≧1), and the bottom power PbM of the Mth information layer satisfy the following formula: