Patents by Inventor Howard Frazier
Howard Frazier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10181968Abstract: A system and method for backchannel closed loop feedback for channel equalization over Ethernet. Closed loop backchannel feedback for real-time transmitter adaptive equalization is provided for a pair of non-ideal duplex communication channels. The real-time transmitter adaptive equalization enables use of low cost relaxed specification transmitter modules at high data rates.Type: GrantFiled: February 27, 2015Date of Patent: January 15, 2019Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Robert John Stone, Howard Frazier
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Patent number: 9455912Abstract: Aspects of a method and system for a distinct physical pattern on an active channel to indicate a data rate transition for energy efficient Ethernet. In this regard, one or more distinct physical patterns may be transmitted on one or more active channels of a network link during an inter-packet gap to control a data rate on the link. The unique physical pattern may be transmitted instead of or in addition to one or more IDLE symbols. The distinct physical pattern may communicate a data rate to be utilized on the link and/or indicate when a data rate transition should occur on the link. The distinct pattern may be transmitted and/or the data rate transition may occur during a specified inter-packet gap or during a specified packet boundary. The distinct physical pattern may comprise one or more control characters and/or an ordered set of voltage levels, symbols, and/or characters.Type: GrantFiled: September 22, 2008Date of Patent: September 27, 2016Assignee: BROADCOM CORPORATIONInventors: Wael William Diab, Howard Frazier
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Patent number: 9438536Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serial/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: GrantFiled: July 1, 2015Date of Patent: September 6, 2016Assignee: BROADCOM CORPORATIONInventors: Burhan Masood, Howard Frazier
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Patent number: 9432142Abstract: A device for pre-emption in passive optical networks may include a first media access control (MAC) module configured to receive a first type of data traffic and transmit the first type of data traffic to a MAC merge module. The device may further include a second media access control (MAC) module configured to receive a second type of data traffic and transmit the second type of data traffic to the MAC merge module. The device may further include the MAC merge module configured to receive the first and second types of data traffic from the first and second MAC modules, respectively, and provide the first and second types of data traffic for transmission over a port. The MAC merge module may be configured to pre-empt the transmission of the first type of data traffic over the port in favor of the second type of data traffic.Type: GrantFiled: September 2, 2014Date of Patent: August 30, 2016Assignee: Broadcom CorporationInventors: Lowell David Lamb, Glen Kramer, Patricia Ann Thaler, Howard Frazier
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Publication number: 20160164703Abstract: A system and method for backchannel closed loop feedback for channel equalization over Ethernet. Closed loop backchannel feedback for real-time transmitter adaptive equalization is provided for a pair of non-ideal duplex communication channels. The real-time transmitter adaptive equalization enables use of low cost relaxed specification transmitter modules at high data rates.Type: ApplicationFiled: February 27, 2015Publication date: June 9, 2016Inventors: Robert John Stone, Howard Frazier
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Patent number: 9323311Abstract: In an Ethernet network comprising link partners that are coupled via an Ethernet link, an energy efficient network (EEN) communication control policy may be established above a MAC layer. The EEN control policy may determine a power level mode of operation for the link partners. Power level mode control data may be communicated from hardware, software and/or firmware of upper layer protocols to PHY devices. The control data may specify when, where and/or how long to implement the power level mode. The control data may be communicated via a “magic” packet comprising start and/or end of frame delimiters and bits that indicate the power level mode. The PHY devices may detect, parse and/or interpret the “magic” packet and may enter and/or exit a lower power mode of operation. The PHY devices may respond to by generating a magic packet and sending the packet to upper layers.Type: GrantFiled: May 22, 2009Date of Patent: April 26, 2016Assignee: BROADCOM CORPORATIONInventors: Wael William Diab, Howard Frazier
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Patent number: 9313140Abstract: While transmitting a first Ethernet frame from the first buffer onto an Ethernet link, a first Ethernet device may stop transmitting the first frame prior to completing transmission of the frame. The first Ethernet device may then transmit a second frame from a second buffer onto the Ethernet link. The first Ethernet device may resume transmission of the first frame from the first buffer onto the Ethernet link. A second Ethernet device may receive, via the Ethernet link, a first portion of a first Ethernet frame and store the first portion of the first Ethernet frame in a first buffer. The second Ethernet device may then receive, via the Ethernet link, a second Ethernet frame and store the second Ethernet frame in a second buffer. The second Ethernet device may then receive, via the Ethernet link, a second portion of the first Ethernet frame and append it to the contents of the first buffer.Type: GrantFiled: June 30, 2011Date of Patent: April 12, 2016Assignee: Broadcom CorporationInventors: Brad Matthews, Howard Frazier, Yongbum Kim, Michael Johas Teener
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Patent number: 9203594Abstract: An Ethernet link may comprise silent and active channels and may support energy efficient Ethernet communication. Training parameters from the one or more active channels may be utilized for determining and/or adjusting training parameters for silent channels prior to activation. Training parameters for silent channels may be determined based on copying training parameters from active channels. Determination of training parameters for silent channels may be based on a weighted average of the active channel training parameters. A delta between active channel training parameters from a prior time and subsequent time may be utilized to determine a correction factor for adjusting training parameters for a silent channel from a prior time. Silent channels may be adjusted based on active channel training parameters and then subsequently may be trained. Training parameters may be adjusted for one or more of an echo canceler, a near-end crosstalk canceler and a far-end canceler.Type: GrantFiled: December 9, 2013Date of Patent: December 1, 2015Assignee: BROADCOM CORPORATIONInventors: Wael William Diab, Howard Frazier, Scott Powell
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Publication number: 20150304248Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serial/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: ApplicationFiled: July 1, 2015Publication date: October 22, 2015Applicant: BROADCOM CORPORATIONInventors: Burhan MASOOD, Howard FRAZIER
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Patent number: 9106570Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serial/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: GrantFiled: September 30, 2014Date of Patent: August 11, 2015Assignee: BROADCOM CORPORATIONInventors: Burhan Masood, Howard Frazier
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Patent number: 9065736Abstract: Aspects of a method and system for compensated time stamping for time-sensitive network communications are provided. In this regard, one or more timestamps generated in an OSI layer above the physical layer may be adjusted based on parameters associated with an amount of time in which data traverses a PHY of the network device. Communications of the network device may be managed based on the adjusted one or more timestamps. The parameters may comprise one or more of: average ingress PHY traversal time, average egress PHY traversal time, variance of ingress PHY traversal time, and variance of egress PHY traversal time. One or more network links coupled to the network device may be characterized based on the one or more adjusted timestamps. The parameters may be stored in one or more registers within a PHY of the network device.Type: GrantFiled: October 9, 2012Date of Patent: June 23, 2015Assignee: BROADCOM CORPORATIONInventors: Wael William Diab, Howard Frazier
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Patent number: 9043509Abstract: Various aspects of a method and system for low-latency networking are provided. Latency requirements of traffic to be communicated along a network path comprising one or more Ethernet links may be determined. A maximum size of Ethernet frames utilized for communicating the traffic may be determined based on the latency requirements. The maximum size of the Ethernet frames may be determined based on a data rate of one or more Ethernet links along the network path. A single device may utilize different maximum packet sizes for different ports/links on which it communicates. One or more messages indicating the determined maximum size may be communicated among devices along the network path to coordinate maximum packet sizes.Type: GrantFiled: May 16, 2011Date of Patent: May 26, 2015Assignee: Broadcom CorporationInventors: Howard Frazier, Yongbum Kim, Michael Johas Teener
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Publication number: 20150063805Abstract: A device for pre-emption in passive optical networks may include a first media access control (MAC) module configured to receive a first type of data traffic and transmit the first type of data traffic to a MAC merge module. The device may further include a second media access control (MAC) module configured to receive a second type of data traffic and transmit the second type of data traffic to the MAC merge module. The device may further include the MAC merge module configured to receive the first and second types of data traffic from the first and second MAC modules, respectively, and provide the first and second types of data traffic for transmission over a port. The MAC merge module may be configured to pre-empt the transmission of the first type of data traffic over the port in favor of the second type of data traffic.Type: ApplicationFiled: September 2, 2014Publication date: March 5, 2015Inventors: Lowell David LAMB, Glen KRAMER, Patricia Ann THALER, Howard FRAZIER
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Publication number: 20150016455Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serial/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Applicant: Broadcom CorporationInventors: Burhan MASOOD, Howard Frazier
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Patent number: 8891561Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serializer/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: GrantFiled: January 29, 2013Date of Patent: November 18, 2014Assignee: Broadcom CorporationInventors: Burhan Masood, Howard Frazier
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Publication number: 20140098684Abstract: Aspects of a method and system for compensated time stamping for time-sensitive network communications are provided. In this regard, one or more timestamps generated in an OSI layer above the physical layer may be adjusted based on parameters associated with an amount of time in which data traverses a PHY of the network device. Communications of the network device may be managed based on the adjusted one or more timestamps. The parameters may comprise one or more of: average ingress PHY traversal time, average egress PHY traversal time, variance of ingress PHY traversal time, and variance of egress PHY traversal time. One or more network links coupled to the network device may be characterized based on the one or more adjusted timestamps. The parameters may be stored in one or more registers within a PHY of the network device.Type: ApplicationFiled: October 9, 2012Publication date: April 10, 2014Inventors: Wael Diab, Howard Frazier
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Publication number: 20140092916Abstract: An Ethernet link may comprise silent and active channels and may support energy efficient Ethernet communication. Training parameters from the one or more active channels may be utilized for determining and/or adjusting training parameters for silent channels prior to activation. Training parameters for silent channels may be determined based on copying training parameters from active channels. Determination of training parameters for silent channels may be based on a weighted average of the active channel training parameters. A delta between active channel training parameters from a prior time and subsequent time may be utilized to determine a correction factor for adjusting training parameters for a silent channel from a prior time. Silent channels may be adjusted based on active channel training parameters and then subsequently may be trained. Training parameters may be adjusted for one or more of an echo canceler, a near-end crosstalk canceler and a far-end canceler.Type: ApplicationFiled: December 9, 2013Publication date: April 3, 2014Applicant: Broadcom CorporationInventors: Wael William Diab, Howard Frazier, Scott Powell
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Publication number: 20140016637Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serializer/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: ApplicationFiled: January 29, 2013Publication date: January 16, 2014Applicant: BROADCOM CORPORATIONInventors: Burhan Masood, Howard Frazier
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Patent number: 8625471Abstract: A system and method for carrier deferral for full duplex energy efficient Ethernet (EEE) physical layer devices (PHYs). A carrier deferral signal can be asserted to a media access control layer to indicate to the media access control (MAC) layer that transmission of data is to be deferred due to a power savings initiative in the physical layer device. In one example, the carrier deferral signal is used when a PHY is awakened by the MAC when the MAC has something to transmit. In another example, the carrier deferral signal is used when a PHY is switching link rates.Type: GrantFiled: September 5, 2008Date of Patent: January 7, 2014Assignee: Broadcom CorporationInventors: Wael William Diab, Howard Frazier
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Patent number: 8611365Abstract: An Ethernet link may comprise silent and active channels and may support energy efficient Ethernet communication. Training parameters from the one or more active channels may be utilized for determining and/or adjusting training parameters for silent channels prior to activation. Training parameters for silent channels may be determined based on copying training parameters from active channels. Determination of training parameters for silent channels may be based on a weighted average of the active channel training parameters. A delta between active channel training parameters from a prior time and subsequent time may be utilized to determine a correction factor for adjusting training parameters for a silent channel from a prior time. Silent channels may be adjusted based on active channel training parameters and then subsequently may be trained. Training parameters may be adjusted for one or more of an echo canceller, a near-end crosstalk canceller and a far-end canceller.Type: GrantFiled: March 4, 2008Date of Patent: December 17, 2013Assignee: Broadcom CorporationInventors: Wael William Diab, Howard Frazier, Scott Powell