US 12,316,482 B2
High-speed signaling systems and methods with adaptable, continuous-time equalization
Hae-Chang Lee, Los Altos, CA (US); Brian S. Leibowitz, San Francisco, CA (US); Jade M. Kizer, Fort Collins, CO (US); Thomas H. Greer, Chapel Hill, NC (US); and Akash Bansal, Santa Clara, CA (US)
Assigned to Rambus Inc., San Jose, CA (US)
Filed by Rambus Inc., San Jose, CA (US)
Filed on Sep. 11, 2022, as Appl. No. 17/931,125.
Application 17/931,125 is a continuation of application No. 17/110,530, filed on Dec. 3, 2020, granted, now 11,469,927.
Application 17/110,530 is a continuation of application No. 16/750,924, filed on Jan. 23, 2020, granted, now 10,938,605, issued on Mar. 2, 2021.
Application 16/750,924 is a continuation of application No. 16/182,735, filed on Nov. 7, 2018, granted, now 10,560,291, issued on Feb. 11, 2020.
Application 16/182,735 is a continuation of application No. 15/827,777, filed on Nov. 30, 2017, granted, now 10,135,646, issued on Nov. 20, 2018.
Application 15/827,777 is a continuation of application No. 15/208,332, filed on Jul. 12, 2016, granted, now 9,860,089, issued on Jan. 2, 2018.
Application 15/208,332 is a continuation of application No. 14/552,598, filed on Nov. 25, 2014, granted, now 9,419,663, issued on Aug. 16, 2016.
Application 14/552,598 is a continuation of application No. 12/522,362, granted, now 8,934,525, issued on Jan. 13, 2015, previously published as PCT/US2008/000249, filed on Jan. 7, 2008.
Claims priority of provisional application 60/879,461, filed on Jan. 8, 2007.
Prior Publication US 2023/0082649 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 25/03 (2006.01); H04B 1/12 (2006.01)
CPC H04L 25/03159 (2013.01) [H04B 1/123 (2013.01); H04L 25/03057 (2013.01); H04L 25/0307 (2013.01); H04L 25/03885 (2013.01); H04L 2025/03356 (2013.01); H04L 2025/03636 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated circuit comprising:
a continuous-time equalizer to receive a signal and to equalize the received signal to produce an equalized signal, wherein the signal exhibits inter-symbol interference (ISI) and the continuous-time equalizer exhibits a gain that is adjustable in response to a control signal;
a first sampler to periodically sample the equalized signal to produce data samples;
a second sampler to sample the equalized signal and thereby produce error samples; and
an adaptation engine to receive the data samples and the error samples, to measure post-cursor ISI of the signal using the data samples and the error samples, and to issue the control signal to the continuous-time equalizer responsive to the measure of the post-cursor ISI.