Patent application number | Description | Published |
20120314780 | System and Method for Transmit Signal Pulse Shaping in Automotive Applications - A system and method for transmit signal pulse shaping in automotive applications. Automotive vehicle manufacturers that incorporate electronic components into an automotive vehicle must consider emission requirements masks that can be dependent on particular geographic markets as well as the other electronic components contained within a particular automotive vehicle design. A physical layer device is provided that can be configured to operate in multiple emissions configurations using configurable parameters specified for the modulation and wave shaping modules. | 12-13-2012 |
20120320771 | Energy Efficiency Ethernet with Assymetric Low Power Idle - Energy efficient Ethernet with asymmetric low power idle. Low power idle mode is typically leveraged when both direction of a link do not have data traffic to transmit. Such a requirement reduces the application of low power idle due to the frequent existence of data traffic in only one direction. An asymmetric low power idle mode enables reduction in power consumption and signal emissions even when one direction has data traffic to transmit. | 12-20-2012 |
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 |
20130177099 | Common-mode termination within communication systems - Common-mode termination within communication systems. Termination is implemented with respect to two respective portions of a system: the intentional signaling within a communication system as well as any unintentional signaling which may be coupled into the system. Such unintentional signaling may be incurred in a variety of ways including via interference which may be generated by the system itself or by other devices or components external to the system. In addition, such unintentional signaling made be characterized as common-mode (CM) signaling, in that, it generally affects different respective portions of the system similarly or in the same manner. Various communication systems may include two or more devices implemented therein, that effectuate signaling via one or more communication links there between. Appropriate termination is made with respect to both the intentional and unintentional signaling portion of the system using any of a variety of impedance types (e.g., resistors, capacitors, inductors, etc.). | 07-11-2013 |
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 |
20130230124 | Method and Apparatus for Transmit Signal Pulse Shaping - A method and apparatus for transmit signal pulse shaping. Automotive vehicle manufacturers that incorporate electronic components into an automotive vehicle must consider emission requirements masks that can be dependent on particular geographic markets as well as the other electronic components contained within a particular automotive vehicle design. A physical layer device is provided that can be configured to operate in multiple emissions configurations using configurable parameters. | 09-05-2013 |
20140294133 | LOW-COST PORT SYNCHRONIZATION METHOD IN MULTIPORT ETHERNET DEVICES - A method for frequency synchronization of a multiport device may include recovering a clock frequency of a master port of a first device that is linked to the multiport device at a slave port of the multiport device. A clock frequency of the slave port may be locked to the recovered-clock frequency of the master port of the first device. Frequency data may be stored in a first frequency register associated with the slave port. The stored frequency data may include a difference between the recovered-clock frequency of the master port of the first device and a local-clock frequency of the multiport device. A clock frequency of one or more master ports of the multiport device may be synchronized with the locked clock frequency of the slave port by coupling the first frequency register to frequency registers associated with one or more master ports. | 10-02-2014 |
20140362865 | Multiplexed Packet Local Area Networking Using an Ethernet Physical Layer Device - Multiplexed packet local area networking using an Ethernet physical layer device. In one embodiment, a network device having dual port Ethernet physical layer devices can be configured to receive a packet on a first Ethernet port. The network device can extract first packet data that is destined for the network device from the data section of the packet and insert second packet data that is destined for the gateway node into the packet to produce a modified packet. The modified packet is then transmitted by the network device over a second Ethernet port. | 12-11-2014 |
20150071334 | FAST DETECTION/MITIGATION AND RECOVERY FOR SEVERE EMI CONDITIONS IN AUTOMOTIVE AREA NETWORKS - A vehicle communication network device includes a transceiver configured to communicatively couple with a remote transceiver of another vehicle communication network device via a wired media and processing circuitry coupled to the transceiver. | 03-12-2015 |
20150146590 | 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. | 05-28-2015 |
20150207539 | System and Method for Multi-Dimensional Modulation Schemes with High Noise Immunity and Low Emission Idle Signaling for Automotive Area Networks - System, method and apparatus for multi-dimensional modulation schemes with high noise immunity and low emission idle (LEI) signaling for automotive area networks. An extra zero constellation point can be used during an idle mode and extra constellation points can be assigned to control signals. | 07-23-2015 |
20150263762 | Forward error correction (FEC) for local area networks (LANs) - A local area network (LAN) backbone is implemented within an environment such as a self-contained environment (e.g., an automobile, an aircraft, a train, a ship, and/or any other environment). The LAN backbone is affected by AWGN, NBI, and/or impulse noise (noise). The LAN backbone supports communications based on an Ethernet communication protocol (e.g., a 1000Base-T1 based system that includes at least one single twisted pair). A device receives a first LDPC coded signal via the LAN backbone and decodes it to recover an input signal of a control system. The device also uses soft information generated during the decoding to compensate for the noise affecting the LAN backbone and then processes the input signal to generate a control signal for the control system. The device then and encodes the control signal to generate a second LDPC coded signal and transmits the second LDPC coded signal via the LAN backbone. | 09-17-2015 |
20150286273 | NETWORK ENERGY CONSUMPTION REDUCTION - In some aspects, the disclosure is directed to methods and systems for a device including a physical interface with electrical connection to a communication channel, and circuitry configured to detect energy received at the physical interface, wait a predetermined length of a time until the beginning of a time slot, monitor the physical interface during the time slot for a predefined pattern from the communication channel, and upon detection of the predefined pattern, transition the device to an increased-power mode. | 10-08-2015 |
20150303907 | CM CLAMPING METHODS AND CIRCUITS FOR WIRED COMMUNICATION APPLICATIONS - A device for common mode (CM) clamping in wired communication includes a first circuit and a second circuit. The first circuit is configured to sense a voltage signal across clamp terminals and to generate an output voltage signal based on the sensed voltage signal. The second circuit is configured to compare the output voltage signal with a reference voltage, to generate a pair of current signals based on a result of the comparison, and to provide the pair of current signals to the clamp terminals. The pair of current signals includes a matched pair of CM current signals. The clamp terminals, upon coupling to nodes of a main circuit provide a desired CM impedance between the nodes of the main circuit. The device can be coupled to the main circuit in conjunction with one or more off-chip magnetic components. | 10-22-2015 |
20150326348 | Robust Line Coding Scheme for Communication Under Severe External Noises - A system to implement a communication line coding scheme using a non-complex bit-to-symbol mapping, a forward error correction (FEC) coding, and an additive bit scrambler after the FEC at the PHY layer is provided. The system may be a part of or implemented by an automobile component. The system may be a PHY device configured to convert data from the MAC layer into 2D-PAM3 symbols that are transmitted across a communication link at a predetermined transmission rate, such as to be compliant with a communication standard. The PHY device may select characteristics of the conversion, such as the FEC coded symbol, based on the target transmission rate. The PHY device may include a transceiver, and may convert the data from MAC layer to PHY layer and back. | 11-12-2015 |