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公开(公告)号：US11502878B2
公开(公告)日：2022-11-15
申请号：US16999853
申请日：2020-08-21
Applicant: Rambus Inc.
Inventor： Vladimir M. Stojanovic , Andrew C. Ho , Anthony Bessios , Bruno W. Garlepp , Grace Tsang , Mark A. Horowitz , Jared L. Zerbe , Jason C. Wei
IPC: H04L25/03 , H04L25/497 , H04L7/027 , H04L25/06
Abstract: A signaling system is described. The signaling system comprises a transmit device, a receive device including a partial response receive circuit, and a signaling path coupling the transmit device and the receive device. The receive device observes an equalized signal from the signaling path, and includes circuitry to use feedback from the most recent previously resolved symbol to sample a currently incoming symbol. The transmit device equalizes transmit data to transmit the equalized signal, by applying weighting based on one or more data values not associated with the most recent previously resolved symbol value.
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公开(公告)号：US11233678B2
公开(公告)日：2022-01-25
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
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.
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Patent Agency Ranking
公开(公告)号：US10771295B2
公开(公告)日：2020-09-08
申请号：US16548708
申请日：2019-08-22
Applicant: Rambus Inc.
Inventor： Vladimir M. Stojanovic , Andrew C. Ho , Anthony Bessios , Fred F. Chen , Elad Alon , Mark A. Horowitz
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.
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公开(公告)号：US20200084073A1
公开(公告)日：2020-03-12
申请号：US16548708
申请日：2019-08-22
Applicant: Rambus Inc.
Inventor： Vladimir M. Stojanovic , Andrew C. Ho , Anthony Bessios , Fred F. Chen , Elad Alon , Mark A. Horowitz
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.
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公开(公告)号：US20180287829A1
公开(公告)日：2018-10-04
申请号：US15907205
申请日：2018-02-27
Applicant: Rambus Inc.
Inventor： Vladimir M. Stojanovic , Andrew C. Ho , Anthony Bessios , Bruno W. Garlepp , Grace Tsang , Mark A. Horowitz , Jared L. Zerbe , Jason C. Wei
IPC: H04L25/03 , H04L25/497 , H04L25/06 , H04L7/027
CPC classification number: H04L25/03057 , H04L7/0276 , H04L25/063 , H04L25/497 , H04L2025/03369 , H04L2025/03503
Abstract: A signaling system is described. The signaling system comprises a transmit device, a receive device including a partial response receive circuit, and a signaling path coupling the transmit device and the receive device. The receive device observes an equalized signal from the signaling path, and includes circuitry to use feedback from the most recent previously resolved symbol to sample a currently incoming symbol. The transmit device equalizes transmit data to transmit the equalized signal, by applying weighting based on one or more data values not associated with the most recent previously resolved symbol value.
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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
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.
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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
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.
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