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:
Sep. 30, 2025

Filed:

Apr. 01, 2024
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Shashank Rajendra Prasad, San Diego, CA (US);

Patrick Isakanian, El Dorado Hills, CA (US);

Assignee:

QUALCOMM INCORPORATED, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/133 (2014.01); H03M 1/50 (2006.01); H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
H03K 5/133 (2013.01); H03M 1/502 (2013.01); H03K 2005/00247 (2013.01);
Abstract

A calibration circuit has a delay loop, a counter and a latch. The delay loop that includes a delay circuit. The counter is clocked by edges in a clock signal generated by the delay loop when an enable signal is in a first signaling state. The latch is configured to capture a multibit output of the counter when the enable signal transitions to a second signaling state. A number of unit delay elements in the delay circuit are enabled based on the multibit output of the counter. In one example, the number of enabled unit delay elements is based on a difference between the multibit output of the counter and a multibit value expected to be generated when the delay circuit is operating nominally.


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