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:
Apr. 28, 2020
Filed:
Jan. 29, 2019
Qualcomm Incorporated, San Diego, CA (US);
Hadi Goudarzi, San Diego, CA (US);
Jon Boyette, Holly Springs, NC (US);
Eskinder Hailu, Cary, NC (US);
Julian Puscar, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A method for fixing a dead-zone in a clock and data recovery (CDR) circuit is disclosed herein. The CDR circuit includes a CDR block and a phase interpolator, the CDR block is configured to generate phase codes based on signals from a phase detector, and the phase interpolator is configured to adjust a phase of a clock signal based on the phase codes. The method includes waiting for the CDR circuit to lock, reading a first phase code from the CDR block, changing the first phase code by a first amount to obtain a second phase code, and inputting the second phase code to the phase interpolator.