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:
May. 19, 2009
Filed:
Sep. 24, 2004
Pei-yu Chiu, Tai-Chung, TW;
Yu-cheng Sung, Taipei, TW;
Tso-tsai Chen, Taipei, TW;
William Wai Wang, Tao-Yuan, TW;
Chih-chung Pai, Tai-Chung Hsien, TW;
Pei-Yu Chiu, Tai-Chung, TW;
Yu-Cheng Sung, Taipei, TW;
Tso-Tsai Chen, Taipei, TW;
William Wai Wang, Tao-Yuan, TW;
Chih-Chung Pai, Tai-Chung Hsien, TW;
Qisda Corporation, Gueishan Hsiang, Taoyuan County, TW;
Abstract
A method for writing a multi-session recordable disc. The method includes performing an immediate optimum power calibration (IOPC) in the lead-in area of each session of a multi-session recordable disc, determining a recording power for the session according to the IOPC output, and completing the session using the determined recording power. The method may be used in addition to the optimal power calibration (OPC) procedures included in the normal initialization of recordable discs. IOPC provides recording devices with an optimal recording power value obtained closer to the point of use than that obtained by conventional OPC procedures carried out at the extremities of the recordable area. Alternative embodiments of the method make accommodations for recording power variations according to disc velocity mode (CAV/CLV), recording speed, and the basis of the IOPC upon a variety of available data sources.