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:
Jul. 02, 2024
Filed:
Feb. 22, 2023
Apple Inc., Cupertino, CA (US);
Wenbo Liu, Cupertino, CA (US);
Gokce Gurun, San Jose, CA (US);
Ajay M. Rao, San Jose, CA (US);
Sanjeev K. Maheshwari, Fremont, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A phase detector circuit for use with a multi-level signaling communication protocol on a serial communication link is disclosed. The phase detector circuit employs multiple phase and logic circuits to detect data state changes between adjacent ones of voltage levels corresponding to different data states in the communication protocol, and generates early/late signals using the detected data state changes. The phase detector circuit statistically filters data state transitions between non-adjacent voltage levels to improve phase locking and reduce recovered clock jitter.