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:
May. 01, 2007
Filed:
Jul. 25, 2005
Cheng-chia Hsu, Chupei, TW;
Teng-ho Wu, Yongkang, TW;
Yu-cheng Pan, Houlong Township, Miaoli County, TW;
Ho-wen Chen, Rueifang Township, Taipei County, TW;
Cheng-Chia Hsu, Chupei, TW;
Teng-Ho Wu, Yongkang, TW;
Yu-Cheng Pan, Houlong Township, Miaoli County, TW;
Ho-Wen Chen, Rueifang Township, Taipei County, TW;
Logan Technology Corp., Hsinchu, TW;
Abstract
A double frequency signal generator to which a synchronization signal having a duty cycle of 1% to 999% is inputted. The synchronization signal is used for triggering of a switching component at positive and negative edges to generate a triangular-wave signal. An average of voltages of the triangular-wave signal is acquired and compared with the triangular-wave signal at a comparator to generate a square-wave having a duty cycle of 50%. Then, the square-wave signal is used for triggering at positive and negative edges to generate a double frequency signal. As such, the high cost issue and the limitation of a square-wave input signal occurred in the prior art may be efficiently overcome.