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:
Oct. 06, 2015

Filed:

Sep. 26, 2014
Applicant:

Analog Devices, Inc., Norwood, MA (US);

Inventors:

Lawrence H. Edelson, Fremont, CA (US);

Enrique Romero Pintado, San Jose, CA (US);

Assignee:

Analog Devices, Inc., Norwood, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/177 (2006.01); H03K 19/00 (2006.01);
U.S. Cl.
CPC ...
H03K 19/0002 (2013.01);
Abstract

A circuit to detect states of a signal is provided. The circuit comprises an input node to receive an input signal. A state detection circuit detects a state of the input signal and generates a detection signal. The state corresponds to at least one of three states. Furthermore, the detection signal generated by the state detection circuit has a level based on the detected state of the input signal. A logic discriminator circuit generates first and second state signals based at least partly on the level of the detection signal. A clock detection circuit generates a clock signal based at least partly on a sequence of logic transitions of the first and second state signals.


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