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:
Mar. 25, 2008
Filed:
Sep. 17, 2004
Wen-fu Tsai, Kaohsiung, TW;
Chien-chih Lin, Taipei, TW;
Shih-chieh Chang, Taipei, TW;
Genesys Logic, Inc., Taipei County, TW;
Abstract
An ultrawideband (UWB) frequency-tracking method and related device are provided. The method includes the following steps: (a) using an initial frequency seed to automatically track and compensate the clock signal of the USB peripheral device; (b) determining whether the automatic tracking and compensating of the clock signal is successful, for example, within a pre-defined duration; (c) if not successful in step (b), setting a new frequency seed; (d) setting the USB peripheral device off-line; and (e) reconnecting the USB peripheral device and using the new frequency seed to perform the tracking and compensating of the clock signal. The setting off-line step is to disable the pull-up resistor of the D+ signal or the pull-up resistor of the D− signal of the USB peripheral device so that the USB peripheral device becomes off-line.