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. 20, 2004
Filed:
Oct. 13, 1999
Chih-Peng Wu, Taipei, TW;
Asustek Computer Inc., Taipei, TW;
Abstract
An apparatus for controlling liquid-crystal-display (LCD) shutter glasses for making the right and left LCD-type shutter of the LCD shutter glasses transparent alternately. An observer who wears the LCD shutter glasses controlled by the apparatus will experience the three-dimensional effect if the alternately transparent speed of the right and left LCD-type shutter is matched with the vertical synchronization signal. The apparatus for controlling liquid-crystal-display (LCD) shutter glasses comprises a first means, a second means, and a third means. The first means is responsive to a vertical synchronization signal and generates a light-passing enable signal. The second means could generate a first voltage signal. The third means is responsive to the light-passing enable signal and the first voltage signal to generate a first and a second controlling signals to control the left and the right LCD-type shutters such that a three dimension image effect is observed by the observer.