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:
Dec. 12, 2017
Filed:
Nov. 10, 2010
Applicants:
Jared L. Zerbe, Woodside, CA (US);
Brian S. Leibowitz, San Francisco, CA (US);
Qi Lin, Los Altos, CA (US);
Inventors:
Jared L. Zerbe, Woodside, CA (US);
Brian S. Leibowitz, San Francisco, CA (US);
Qi Lin, Los Altos, CA (US);
Assignee:
Rambus Inc., Sunnyvale, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/34 (2006.01); H03K 3/013 (2006.01); G11C 7/02 (2006.01); H03K 5/153 (2006.01); H04L 25/49 (2006.01); H04L 25/06 (2006.01); H04L 25/03 (2006.01);
U.S. Cl.
CPC ...
H03K 3/013 (2013.01); G11C 7/02 (2013.01); H03K 5/153 (2013.01); H04L 25/066 (2013.01); H04L 25/4902 (2013.01); H04L 25/4917 (2013.01); H04L 25/03057 (2013.01);
Abstract
A system for communicating information between circuits is described. A transmit circuit provides pulse-amplitude-modulation (PAM) signals via a communication channel to a receiver. A circuit in the receiver determines digital values from the received signals using a time-varying threshold voltage, which varies during the bit-time. This approach may compensate for inter-symbol interference (ISI) to increase the voltage and timing margins of the system.