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:
Sep. 18, 2007
Filed:
Nov. 03, 2005
Chuan Liu, Hsin-Chu, TW;
Chuan-cheng Hsiao, Hsin-Chu, TW;
Jeng-horng Tsai, Kao-Hsiung, TW;
Mediatek Inc., Hsin-Chi Hsien, TW;
Abstract
A signal generating system for generating a validation signal includes: a phase lock loop (PLL) for locking an output clock to a specific clock frequency; and a digital signal generation circuit. The digital signal generating circuit includes: a triggering circuit, electrically coupled to the PLL, for determining whether the output clock of the PLL is in a frequency range, and outputting a triggering signal if the output clock is in a frequency range; and a signal generating device, electrically coupled to the triggering circuit and the PLL, for generating the validation signal according to the output clock when receiving the triggering signal; wherein before the output clock is in the frequency range, the PLL continuously outputs the output clock.