公开(公告)号：US20170338981A1

公开(公告)日：2017-11-23

申请号：US15616408

申请日：2017-06-07

Applicant: Rambus Inc.

Inventor： Vladimir M. Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H04L25/49 ,  H04L25/06 ,  H04L25/02 ,  H04L25/03 ,  H04B1/04

CPC classification number: H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

公开(公告)号：US09000803B2

公开(公告)日：2015-04-07

申请号：US13913156

申请日：2013-06-07

Applicant: Rambus Inc.

Inventor： Vladimir M. Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H03K19/0175 ,  H04B1/04 ,  H04L25/02 ,  H04L25/03 ,  H04L25/06 ,  H04L25/49

CPC classification number: H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

公开(公告)号：US20210051047A1

公开(公告)日：2021-02-18

申请号：US17000191

申请日：2020-08-21

Applicant: Rambus Inc.

Inventor： Vladimir M. Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H04L25/49 ,  H04L25/02 ,  H04L25/03 ,  H04L25/06 ,  H04B1/04

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

公开(公告)号：US20160218895A1

公开(公告)日：2016-07-28

申请号：US15006041

申请日：2016-01-25

Applicant: Rambus Inc.

Inventor： Vladimir M. Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H04L25/49 ,  H04L25/03 ,  H04L25/02

CPC classification number: H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

公开(公告)号：US20150222303A1

公开(公告)日：2015-08-06

申请号：US14620163

申请日：2015-02-11

Applicant: Rambus Inc.

Inventor： Vladimir Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H04B1/04

CPC classification number: H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

公开(公告)号：US20130272359A1

公开(公告)日：2013-10-17

申请号：US13913242

申请日：2013-06-07

Applicant: Rambus Inc.

Inventor： Vladimir M. Stojanovic ,  Andrew C. Ho ,  Anthony Bessios ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

IPC: H04B1/04

CPC classification number: H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.