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, 2008
Filed:
Jul. 25, 2006
Applicant:
Chi-wei Tien, Taipei, TW;
Inventor:
Chi-Wei Tien, Taipei, TW;
Assignee:
Compal Electronics, Inc., Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 1/22 (2006.01); H02P 1/40 (2006.01); H02P 3/00 (2006.01); H02P 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for controlling a fan is provided for adjusting the rotational speed of a fan. The method includes adjusting the rotational speed of the fan from a first mode value to a range of rotational speed variation, wherein the upper bound of the range of rotational speed variation is a second mode value plus a first variation value, and the lower bound of the range of rotational speed variation is the second mode value minus a second variation value; and adjusting the rotational speed of the fan in the range of rotational speed variation during a time period. Thus, a user will not consider the sound from the fan as a noise.