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:
Aug. 05, 2003
Filed:
Nov. 21, 2001
Yu-Wei Lin, Hsin-Tien, TW;
Chia-Hsin Chen, Taipei, TW;
Via Technologies, Inc., Taipei, TW;
Abstract
A phase detecting device, including a phase detector, an inversion logic circuit, a latch and an OR logic circuit, is used for detecting the phase difference between a reference signal and a feedback signal and for outputting a delay control signal. The phase detector generates a detected signal according to the status of the feedback signal captured by the reference signal. The inversion logic circuit inverts the detected signal, and the delay device delays the detected signal. The delayed inverted detected signal is then fed into the latch device to generate a latch signal. As the detected signal and the latch signal are fed into the OR logic circuit, the OR logic circuit feeds the delay control signal into the counter so that the delay circuit can generate different delay time, such as T/4, T/2 or 1T, for meeting different signal-delay requirements.