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:
Apr. 15, 2003
Filed:
Jul. 11, 2001
Jen-Cheng Chiang, Taipei, TW;
Behavior Tech Computer Corporation, Taipei, TW;
Abstract
The present invention discloses a method for adjusting the difference of the reflective light disturbance for a light source of an optical disk drive when there is and is not an optical disk in the optical disk drive. This method is used to adjust the illumination parameters of the laser diode of an optical disk drive; wherein the no disc is used for rough tuning to obtain a preliminary value for the illumination parameter. After inserting an optical disk into the drive, a quick sample is taken again between the illumination power controller and the high level amplifier. After computing with the preliminary value of the illumination parameter, the influence value of the reflective light of the laser light source as it is to the illumination parameter when there is an optical disk in the drive. The result is sent to the compensating device to compensate in proportion and process feedback adjustment in order to obtain the laser stable illumination parameter which is affected by the reflective light of the optical disk, and save such stable illumination parameter in the memory as the illumination control parameter when the optical disk drive writes in data, and further to attain the purpose of adjusting the reflective light disturbance of the laser on the optical disk.