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:
Jul. 19, 2016
Filed:
Jan. 15, 2015
Applicant:
Lite-on Technology Corporation, Taipei, TW;
Inventor:
Chun-Lai Hsiao, Taipei, TW;
Assignee:
LITE-ON TECHNOLOGY CORPORATION, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 9/31 (2006.01); G03B 21/28 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3129 (2013.01); G03B 21/28 (2013.01); H04N 9/3135 (2013.01); H04N 9/3194 (2013.01);
Abstract
A control method of a projection device is provided. The control method comprises following steps. The light source generates a light beam towards a micro electro mechanical system (MEMS) module. The scan driver outputs a first direction scan signal and a second direction scan signal to the MEMS module for enabling the MEMS module to reflect the light beam to a projection surface. The first direction control system of the MEMS module is a second-order system and has a resonance frequency, and the first direction scan signal has a frequency within a frequency range containing the resonance frequency.