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:
Feb. 13, 2007
Filed:
Nov. 24, 2003
Jen-yu Hsu, Taipei, TW;
Hsiang-yi Fu, Taipei, TW;
Tun-chieh Lee, Taipei, TW;
Fu-hsiang Chen, Taipei, TW;
Yao-chou Tsai, Taipei, TW;
Jen-Yu Hsu, Taipei, TW;
Hsiang-Yi Fu, Taipei, TW;
Tun-Chieh Lee, Taipei, TW;
Fu-Hsiang Chen, Taipei, TW;
Yao-Chou Tsai, Taipei, TW;
Lite-On IT Corporation, Taipei, TW;
Abstract
The present invention discloses a method of detecting orientation of an optical disk drive. Firstly, a first moving distance is measured by using a first force driven on a movable optical pick up head of the optical disk drive for a preset period. Next, a second moving distance is measured by using a second force driven on the movable optical pick up head for the preset period, wherein the second force and the first force have opposite direction but the same amplitude. Next, it is determined that the optical disk drive is horizontal orientation when the difference between the first and second moving distances falls within a pre-determined value. Additionally, a first moving time is measured by using a first force driven on a movable optical pick up head for a pre-determined distance. Then, a second moving distance is measured by using a second force driven on the movable optical pick up head for the pre-determined distance, wherein the second force and the first force have opposite direction but the same amplitude. Next, when the difference between the first and second moving time falls within a pre-determined value, the optical disk drive is horizontal orientation.