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.

Date of Patent:
Feb. 19, 2019

Filed:

Oct. 31, 2017
Applicant:

Integrated Device Technology, Inc., San Jose, CA (US);

Inventors:

Xinqing Chen, Shanghai, CN;

HaiQi Liu, Shanghai, CN;

Yuan Zhang, Shanghai, CN;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01); H03L 7/095 (2006.01); H03L 7/089 (2006.01);
U.S. Cl.
CPC ...
H03L 7/095 (2013.01); H03L 7/0891 (2013.01);
Abstract

An apparatus comprising an analog circuit and a digital circuit. The analog circuit may be configured to (i) receive pulses generated in response to a comparison of a feedback signal and a reference signal, (ii) filter the pulses when a frequency of the feedback signal is close to a frequency of the reference signal and (iii) generate an enable signal in response to the filtered pulses. The digital circuit may be configured to generate an output signal representing a lock status between (i) the feedback signal and (ii) the reference signal. The lock status may be determined (a) during a decision window based on a number of pulses of the reference signal and (b) when the enable signal is active (B) the decision window may be repeated periodically until the enable signal is not active.


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Chen, Xinqing. (2019). Fast-response hybrid lock detector (U.S. Patent No. 10211843). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10211843

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