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:
Nov. 20, 2018

Filed:

Mar. 24, 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 ...
G01R 23/02 (2006.01); H03K 5/19 (2006.01); H03K 19/21 (2006.01);
U.S. Cl.
CPC ...
H03K 5/19 (2013.01); H03K 19/21 (2013.01);
Abstract

An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an intermediate signal in response to an input clock signal operating at a frequency. The first circuit may modify the input clock signal according to a threshold frequency to generate a waveform for the intermediate signal. The waveform of the intermediate signal may have at least one of (i) pulses and (ii) a steady state. The second circuit may be configured to generate a control signal in response to the intermediate signal. The second circuit may modify the intermediate signal to generate the control signal. The control signal may have a first state when the intermediate signal has pulses. The control signal may have a second state when the intermediate signal has the steady state.


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