Patent application number | Description | Published |
20100080111 | METHOD AND SYSTEM FOR ETHERNET SWITCHING, CONVERSION, AND PHY OPTIMIZATION BASED ON LINK LENGTH IN AUDIO/VIDEO SYSTEMS - Aspects of a method and system for Ethernet Switching, Conversion, and PHY optimization based on link length in Audio/Video Systems are provided. In this regard, the length of a link over which a first communication device communicates with a second communication device may be determined and Ethernet PHY's residing in the communication devices may be configured based on the determination. One or both of the communication devices may comprise an Ethernet switch operable to switch packetized audio and/or video content. The packetized audio and/or video may be switched between the configured Ethernet PHY and one or more other Ethernet PHYs. Audio and/or video data may be received via the one or more corresponding Ethernet PHYs, the received audio and/or video data may be reformatted to be compatible with an audio and/or video interface, and the reformatted audio and/or video data may be transmitted via the audio and/or video interface. | 04-01-2010 |
20100309787 | METHOD AND SYSTEM FOR SYMMETRIC TRANSMIT AND RECEIVE LATENCIES IN AN ENERGY EFFICIENT PHY - Aspects of a method and system for symmetric transmit and receive latencies in an energy efficient PHY are provided. In this regard, a delay introduced by a PHY of a network device for outbound traffic and a delay introduced by the PHY for inbound traffic may be controlled such that a transmit delay of the network device is equal, within a tolerance, to a receive latency of the network device. The delays may be controlled based on whether one or more energy efficiency features are enabled in the PHY. The delay introduced by the PHY for outbound traffic may be controlled based on an amount of buffered inbound traffic. The delay introduced by the PHY for inbound traffic may be controlled based on an amount of buffered outbound traffic. The delays may be controlled such that said receive latency and the transmit latency are approximately constant regardless of a mode of operation of the network device. | 12-09-2010 |
20110069794 | METHOD AND SYSTEM FOR INTERFERENCE CANCELLATION - Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel. | 03-24-2011 |
20110183546 | Method And Apparatus For An Ethernet Connector Comprising An Integrated PHY - A connector comprising a physical layer transceiver device may perform physical layer functions for a communicatively coupled communication device. The physical layer functions may comply with OSI layer one methods. The physical layer transceiver device may be integrated on a single chip and/or on a plurality of chips within the connector. Wire-line and/or wireless technologies and/or protocols may be utilized for communication via the connector. Data may be communicated by the physical layer transceiver device via a mated corresponding connector coupled to a twisted pair cable. Data may be communicated by the physical layer transceiver device via a mated corresponding connector and/or dongle comprising an antenna and/or a wireless access point. The connectors may utilize Power over Ethernet (PoE). The physical layer transceiver device may support Ethernet extended reach mode. A plurality of the connectors may be ganged together. | 07-28-2011 |
20120002711 | METHOD AND SYSTEM FOR ADAPTIVE TONE CANCELLATION FOR MITIGATING THE EFFECTS OF ELECTROMAGNETIC INTERFERENCE - Aspects of a method and system for adaptive tone cancellation for mitigating the effects of interference are provided. In this regard, an Ethernet PHY may receive one or more signals via a corresponding one or more physical channels and generate one or more estimate signals, each of which approximates interference present in a corresponding one of the received signals. The Ethernet PHY may subtract each one of the estimate signals from a corresponding one of the received signals. The subtracting may occur at the input of one or more slicers in the Ethernet PHY. The received signals may be processed via one or more equalizers in the Ethernet PHY. A decision output of a slicer in the Ethernet PHY may be subtracted from one of the said one or more received signals, and a signal resulting from the subtraction may be utilized to generate the one or more estimate signals. | 01-05-2012 |
20120188885 | METHOD AND SYSTEM FOR SELF-ADAPTING DYNAMIC POWER REDUCTION MECHANISM FOR PHYSICAL LAYER DEVICES IN PACKET DATA NETWORKS - A physical layer (PHY) in a network device may provide self-adapting power reduction based on monitoring of activity associated with an interface between the PHY and remaining components of the network device. The power management operations of the PHY may then be configured and/or adjusted based on that monitoring. The PHY may comprise an Ethernet PHY, which may support energy efficient Ethernet (EEE) features. The monitored interface may comprise a Media Independent Interface (MII) based interface. In instances where the monitored activity comprises outbound traffic, outbound data received via the interface may be buffered when at least one subcomponent of the PHY that is operable to support transmission of the outbound traffic is unavailable due to the power management operations. The buffering may be configured to last to allow sufficient time to reactivate the at least one subcomponent. | 07-26-2012 |
20120236851 | METHOD AND SYSTEM FOR A HIGH-SPEED BACKWARD-COMPATIBLE ETHERNET CONNECTOR - Aspects of a method and system for a high-speed backward-compatible Ethernet connector are provided. Which, if any, of a plurality of pins of a connector are coupled to a first portion of one or more circuits of an Ethernet PHY may be controlled via one or more switching elements in the Ethernet PHY. The switching element(s) may reside in a signal path between the first portion of the one or more circuits and a second portion of the one or more circuits. One or more configurations of the switching element(s) may couple less than all of the plurality of pins to the first circuit(s). Each signal into and out of the switching element(s) may be a digital signal. The first portion of the one or more circuit may comprise a media independent interface. The second portion of the one or more circuit may comprise a media dependent interface. | 09-20-2012 |
20130114623 | Method And System For Triggering Training For Ethernet Channels To Support Energy Efficient Ethernet Networks - An Ethernet link may comprise one or more link partners that may be communicatively coupled via one or more silent channels, One or more circuits and/or parameters corresponding to silent channels may be retrained, refreshed and/or updated based on various triggers, for example, fixed times, periodic or aperiodic time intervals, random or pseudorandom timer, events, link statistics, physical conditions such as noise, temperature level, cable type and/or cable length, communication from a corresponding link partner and/or based on programming from, for example, a layer above the physical layer. The retraining, refreshing and/or parameter updating may occur for one or more of an echo canceller, a far-end crosstalk canceller and a near-end crosstalk canceller corresponding to the one or more silent channels. Subsequent to the retraining, refreshing and/or parameter updating, the one or more silent channels may be activated and/or may remain silent. | 05-09-2013 |
20130230091 | EXTENSION OF ETHERNET PHY TO CHANNELS WITH BRIDGED TAP WIRES - In one embodiment, receiving an Ethernet signal over a channel, the Ethernet signal comprising a preamble frame, an idle frame, and a data frame, the preamble frame comprising one or more preamble codes; synchronizing to the Ethernet signal based on the preamble frame; replicating the one or more preamble codes; and training a decision feedback equalizer (DFE) based on the one or more replicated codes, the training enabling the DFE to use decision values at the DFE output to track channel variations. | 09-05-2013 |
20130243011 | METHOD AND SYSTEM FOR 10GBASE-T START-UP - Certain aspects for the start-up procedure of transceivers supporting higher data rates over twisted-pair copper cabling are provided for 10 Gbit/sec Ethernet links (10 GBASE-T). During a PMA (physical medium attachment) training period of the start-up procedure, long PMA training frames are exchanged periodically between link partners. A significant portion of each PMA training frame consists of known pseudo random sequences simultaneously transmitted over four wire pairs. PMA training frames include an InfoField for exchanging parameters and control information between link partners. For example, the InfoField's payload comprises fields for indicating current transmit power backoff (PBO), next PBO, requested PBO, transition count, control information, and for communicating precoder coefficients. Information in InfoFields is repeated and is not necessary that a link partner decodes every InfoField. For example, by occasionally reading the transition count, a link partner can determine when a change in transmit PBO and/or a state transition is to occur. | 09-19-2013 |
20130308695 | Method and System for Adaptive Tone Cancellation for Mitigating the Effects of Electromagnetic Interference - Aspects of a method and system for adaptive tone cancellation for mitigating the effects of interference are provided. In this regard, an Ethernet PHY may receive one or more signals via a corresponding one or more physical channels and generate one or more estimate signals, each of which approximates interference present in a corresponding one of the received signals. The Ethernet PHY may subtract each one of the estimate signals from a corresponding one of the received signals. The subtracting may occur at the input of one or more slicers in the Ethernet PHY. The received signals may be processed via one or more equalizers in the Ethernet PHY. A decision output of a slicer in the Ethernet PHY may be subtracted from one of the the one or more received signals, and a signal resulting from the subtraction may be utilized to generate the one or more estimate signals. | 11-21-2013 |
20130315357 | METHOD AND SYSTEM FOR INTERFERENCE CANCELLATION - Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel. | 11-28-2013 |
20140105014 | Method and System for Extended Reach Copper Transceiver - Aspects of a method and system for an extended range copper transceiver are provided. Reducing the communication rate provided by multi-rate physical (PHY) layer operations in an Ethernet transceiver may extend the range of the Ethernet transceiver over twisted-pair copper cabling from a standard connection length. The Ethernet transceiver may support up to 1 Gbps or up to 10 Gbps transmission rate over copper cabling. The multi-rate PHY layer architecture in the Ethernet transceiver may support signal-processing operations, such as echo cancellation and/or equalization, which may be applied to the reduced communication rate to enable range extension. The reduced communication rate may be achieved by reducing the symbol rate provided by the multi-rate PHY layer operations. Reducing the communication rate may also enable utilizing greater insertion loss cabling for a standard connection length. | 04-17-2014 |
Patent application number | Description | Published |
20100241878 | System and Method for Mirroring Power Over Ethernet Registers in a Physical Layer Device Over a Single Isolation Boundary - A system and method for mirroring power over Ethernet (PoE) registers in physical layer devices (PHYs) over a single isolation boundary. PHYs in a PoE system can be arranged in a master/slave configuration. In this configuration, a master PHY can be designed to communicate with the power source equipment controllers via a single isolation device. | 09-23-2010 |
20110007739 | System and Method for Enhanced Physical Layer Device Autonegotiation - A system and method for enhanced physical layer device autonegotiation. The autonegotiation process typically identifies the highest common denominator amongst various standardized modes of operation. Enhanced autonegotiation can be used to select a mode of operation that is not the highest common denominator. Enhanced autonegotiation can also identify a non-standardized mode of operation using next page messaging, additional physical signaling, or Layer 2 messaging. | 01-13-2011 |
20110010609 | System and Method for Achieving Higher Data Rates in Physical Layer Devices - A system and method for achieving higher data rates in physical layer devices. Costs imposed by large data rate increases represented by generational increases in Ethernet standards activities are avoided through physical layer device modifications that enable marginal increases in data bandwidth. Building-block reuse can be promoted through the selective use of clocking rate increase, increase in coding efficiency, and bit reuse. | 01-13-2011 |
20110022923 | System and Method for Achieving Greater Than 10 Gbit/s Transmission Rates for Twisted Pair Physical Layer Devices - A system and method for achieving greater than 10 Gbit/s transmission rates for twisted pair physical layer devices. An architecture is provided that enables transmission at the next standardized transmission rate over structured cabling. | 01-27-2011 |
20110026416 | System and Method for Dynamic Power Control for Energy Efficient Physical Layer Communication Devices - A system and method for dynamic power control for energy efficient physical layer communication devices. Energy-efficiency features are continually being developed to conserve energy in links between such energy-efficient devices. These energy-efficient devices interoperate with many legacy devices that have already been deployed. In these links, energy savings can be produced by having a local receiver enter an energy saving state based upon the receipt of standard IDLE signals. | 02-03-2011 |
20110122891 | Variable Rate Twisted pair, Backplane and Direct Attach Copper Physical Layer Devices - Variable rate twisted pair, backplane and direct attach copper physical layer devices (PHYs). A variable-rate PHY can be designed to identify a mode of operation based on identified characteristics of a communication channel. The identified mode of operation can support a data rate lower than that of a connected media access control (MAC). The lower data rate promotes reuse of legacy media and existing MACs. | 05-26-2011 |
20110200056 | System and Method for Frequency Division Multiplexed High Speed Physical Layer Devices - A system and method for frequency division multiplexed high speed physical layer devices. A next generation Ethernet device can be generated through reuse of existing architectures. Multiple instantiations of an existing architecture can be supported on a given wire pair by frequency division multiplexing on a number of carriers. The multiple instantiations can enable multiple modes that can support different configurations, variable rates, and energy efficient Ethernet. | 08-18-2011 |
20110202781 | System and Method for Loop Timing Update of Energy Efficient Physical Layer Devices Using Subset Communication Techniques - A system and method for loop timing update of energy efficient physical layer devices using subset communication techniques. During a quiet period during which a subset of communication channels are transitioned from an active mode to a low-power mode, circuitry in the active channel can be designed to track, on behalf of the inactive channels, the phase drift due to the frequency offset. This tracking of the frequency estimation error would reduce the time required to perform a timing update for the communication channels when transitioning back to the active mode. | 08-18-2011 |
20110249687 | System and Method for Forming N0GBASE-T - A system and method for forming N0GBASE-T. In one embodiment, N 10GBASE-T PHYs are matched to a NĂ—10G MAC via a shim layer. The shim layer is designed to distribute data received from a higher rate MAC to multiple lower-rate PHYs on the transmit end, and to collect data received from multiple lower-rate PHYs to a higher rate MAC. | 10-13-2011 |
20110255427 | System and Method for Physical Layer Device Enabled Clock Diagnostics - A system and method for physical layer device enabled clock diagnostics. The physical layer device can monitor the performance of a clock recovery module. Performance monitoring can be performed on the output clock signal or the control components used to generate the output clock signal. In one embodiment, the performance monitoring is correlated to particular data patterns to provide an accurate determination of variations or other inconsistencies within the clock recovery module. | 10-20-2011 |
20110258465 | System and Method for Physical Layer Device Enabled Power Over Ethernet Processing - A system and method for physical layer device enabled power over Ethernet (PoE) processing. A digital PoE control module is included within a physical layer device and is designed to complement an analog PoE control module within a power sourcing equipment. The inclusion of the digital PoE control within the physical layer device reduces the complexity of the power sourcing equipment without sacrificing PoE control features. | 10-20-2011 |
20110313692 | Enhanced Intelligent Patch Panel Diagnostic Management - A system and method for enhanced intelligent patch panel diagnostic management. Physical layer device technology can be implemented into a patch panel to perform diagnostics of a communication channel. This diagnostic information (e.g., length of cable, location of cable fault, type of cable, etc.) can be displayed on a display of the patch panel management system to assist IT personnel. | 12-22-2011 |
20120170591 | Advanced and Dynamic Physical Layer Device Capabilities Utilizing a Link Interruption Signal - Advanced and dynamic physical layer device capabilities utilizing a link interruption signal. The physical layer device can use a link interruption signal to signal to a media access controller device that the link has temporarily been interrupted. This link interruption signal can be generated in response to one or more programmable modes of the physical layer device that are used to support the advanced and dynamic physical layer device capabilities. | 07-05-2012 |
20120240004 | System and Method for Achieving Higher Data Rates in Physical Layer Devices - A system and method for achieving higher data rates in physical layer devices. Costs imposed by large data rate increases represented by generational increases in Ethernet standards activities are avoided through physical layer device modifications that enable marginal increases in data bandwidth. Building-block reuse can be promoted through the selective use of clocking rate increase, increase in coding efficiency, and bit reuse. | 09-20-2012 |
20130034009 | System and Method for Dynamic Power Control for Energy Efficient Physical Layer Communication Devices - A system and method for dynamic power control for energy efficient physical layer communication devices. Energy-efficiency features are continually being developed to conserve energy in links between such energy-efficient devices. These energy-efficient devices interoperate with many legacy devices that have already been deployed. In these links, energy savings can be produced by having a local receiver enter an energy saving state based upon the receipt of standard IDLE signals. | 02-07-2013 |
20130036232 | System and Method for Enhanced Physical Layer Device Autonegotiation - A system and method for enhanced physical layer device autonegotiation. The autonegotiation process typically identifies the highest common denominator amongst various standardized modes of operation. Enhanced autonegotiation can be used to select a mode of operation that is not the highest common denominator. Enhanced autonegotiation can also identify a non-standardized mode of operation using next page messaging, additional physical signaling, or Layer | 02-07-2013 |
20130036316 | System and Method for Physical Layer Device Enabled Power Over Ethernet Processing - A system and method for physical layer device enabled power over Ethernet (PoE) processing. A digital PoE control module is included within a physical layer device and is designed to complement an analog PoE control module within a power sourcing equipment. The inclusion of the digital PoE control within the physical layer device reduces the complexity of the power sourcing equipment without sacrificing PoE control features. | 02-07-2013 |
20130054996 | Energy Efficiency Ethernet with Low Power Active Idle Transmission Mode - Energy efficient Ethernet with a low power active idle transmission mode. A low power active idle transmission mode is defined for the transmission of idle signals during inter-packet gaps. The low power active idle transmission mode can provide energy savings in those instances that preclude the use of a low power idle mode and/or subrating to produce greater energy savings. | 02-28-2013 |
20130058265 | Ethernet Physical Layer Device Using Time Division Duplex - An Ethernet physical layer device using time division duplex. A time division duplex frame can be defined with uplink and downlink transmission periods. These defined uplink and downlink transmission periods can be adjusted based on bandwidth and latency considerations on the network link. | 03-07-2013 |
20130139027 | System and Method for Achieving Greater Than 10 Gbit/s Transmission Rates for Twisted Pair Physical Layer Devices - A system and method for achieving greater than 10 Gbit/s transmission rates for twisted pair physical layer devices. An architecture is provided that enables transmission at the next standardized transmission rate over structured cabling. | 05-30-2013 |
20140092916 | Method and System for Training an Ethernet Channel Based on an Active Channel to Support Energy Efficient Ethernet Networks - 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. | 04-03-2014 |
20140098826 | Method and System for Dynamically Determining When to Train Ethernet Link Partners to Support Energy Efficient Ethernet Networks - Training, refreshing and/or updating Ethernet link partners for silent channels and/or silent directions of channels may be determined based on control parameters. This may be used to improve energy efficiency in Ethernet communication. Control parameters may comprise a default value and/or may be determined based on prior training, refreshing and/or updating. New values for the control parameters may be generated based on a magnitude of change between current and prior control parameter values or based on performance such as bit error rate. User input may be utilized to determine when to execute the training, refreshing and/or updating. The training, refreshing and/or updating may be done for one or more of a near-end crosstalk canceller, alien near-end crosstalk canceller, far-end crosstalk canceller, alien far-end crosstalk canceller and echo canceller. After the training, refreshing and/or updating, the silent channels may transition to active and/or may remain silent. | 04-10-2014 |
20140105222 | Method and System for Utilizing a Reserved Channel to Manage Energy Efficient Network Protocols - Aspects of a method and system for utilization of a reserved and/or out of band channel for managing a data rate of an Ethernet channel are provided. In this regard, a data rate of a network link may be managed via traffic communicated over a reserved and/or out of band channel on said network link. The reserved and/or out of band channel may be an auxiliary channel established in the IEEE 802.3AN standard. Traffic communicated over the reserved and/or out of band channel may enable negotiating a data rate for the link, scheduling a change in the data rate on the link, exchanging link state information, configuring a number of active physical channels on the link, configuring a signal constellation utilized for representing data on said the link, configuring an inter-frame or inter-packet gap, and/or configuring signal levels utilized for signaling on the link. | 04-17-2014 |
20140153401 | Method and System for Symmetric Transmit and Receive Latencies in an Energy Efficient PHY - Aspects of a method and system for symmetric transmit and receive latencies in an energy efficient PHY are provided. In this regard, a delay introduced by a PHY of a network device for outbound traffic and a delay introduced by the PHY for inbound traffic may be controlled such that a transmit delay of the network device is equal, within a tolerance, to a receive latency of the network device. The delays may be controlled based on whether one or more energy efficiency features are enabled in the PHY. The delay introduced by the PHY for outbound traffic may be controlled based on an amount of buffered inbound traffic. The delay introduced by the PHY for inbound traffic may be controlled based on an amount of buffered outbound traffic. The delays may be controlled such that said receive latency and the transmit latency are approximately constant regardless of a mode of operation of the network device. | 06-05-2014 |