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:
Jan. 24, 2012
Filed:
Oct. 28, 2010
Weicheng Zhang, Shanghai, CN;
Ming Shi, Shanghai, CN;
Wei-hua Zou, Shanghai, CN;
Shu-sun Yu, Cupertino, CA (US);
Chieh-yuan Chao, Fremont, CA (US);
Weicheng Zhang, Shanghai, CN;
Ming Shi, Shanghai, CN;
Wei-Hua Zou, Shanghai, CN;
Shu-Sun Yu, Cupertino, CA (US);
Chieh-Yuan Chao, Fremont, CA (US);
Amlogic Co., Ltd., Santa Clara, CA (US);
Abstract
An adaptive digital phase locked loop comprises: a digital configurable phase detector for receiving a reference signal and a feedback signal and for generating a detection signal indicative of a phase/frequency difference between the reference signal and the feedback signal; a configurable digital loop filter for filtering the DPFD detection signal; a digital locking monitor for monitoring polarity transitions of the detection signal and adaptively switching the locking modes and DCO tuning resolution; and a DCO for generating the feedback signal as a function of the detection signal.