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. 27, 2009
Filed:
Mar. 29, 2007
Toan Thanh Nguyen, Santa Clara, CA (US);
Thungoc M. Tran, San Jose, CA (US);
Toan Thanh Nguyen, Santa Clara, CA (US);
Thungoc M. Tran, San Jose, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Bang-bang phase detection (BBPD) methods and circuits are presented for providing low latency, low jitter phase detection for use in high data-rate applications. A shortened data-path implementation of BBPD methods and circuits provides low-latency production of two output signals including alternating samples of the input signal. Combinational logic circuitry is also provided to produce a clock-data recovery (CDR) signal indicative of the phase of the input signal with respect to a clock signal. The use of differential signals throughout the BBPD timing circuitry provides for the production of a low jitter CDR signal.