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. 03, 2012
Filed:
Jul. 02, 2008
Toru Aida, Kanagawa, JP;
Akitoshi Suzuki, Shizuoka, JP;
Shinobu Hayashi, Shizuoka, JP;
Akiya Saito, Kanagawa, JP;
Toru Aida, Kanagawa, JP;
Akitoshi Suzuki, Shizuoka, JP;
Shinobu Hayashi, Shizuoka, JP;
Akiya Saito, Kanagawa, JP;
Sony Disc & Digital Solutions, Inc., Tokyo, JP;
Abstract
A recording drive waveform adjusting method for manufacturing a master disc is provided. The method includes forming an exposed area in an inorganic resist layer for test exposure by irradiating a master disc having the inorganic resist layer with laser light of a recording power based on a recording drive waveform according to a test recording signal. The method also includes obtaining reflected-light information by irradiating the exposed area formed in the test exposure with laser light of a reproducing power, determining whether the recording drive waveform is appropriate by using the reflected-light information, and correcting the recording drive waveform if the recording drive waveform is determined to be inappropriate in the determination.