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Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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| Number | Title | Issue Date |
| 8121062 | Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems A method and apparatus are disclosed for canceling cross-talk in a frequency-division multiplexed communication system. The disclosed frequency-division multiplexed communication system employs multiple carriers having overlapping channels and provides an improved c... | 02/21/2012 |
| 8116240 | Bi-directional bridge circuit having high common mode rejection and high input sensitivity A bidirectional communications interface is provided that connects a transmitter and a receiver, or a transceiver, to a transmission line. Under an embodiment, the bidirectional interface generates positive and negative polarity data signals using two separate diffe... | 02/14/2012 |
| 8077641 | Echo cancellation for channels with unknown time-varying gain After an initial training session, a “Dynamic Echo Canceller” (DEC) provides echo cancellation where only access to an input signal and a composite output signal are available, and the input signal is subjected to an unknown variable gain function. In one embodi... | 12/13/2011 |
| 8077642 | Methods and apparatus for signal echo cancellation and transmitter calibration in full duplex systems A method includes transmitting a first signal over a network from a first communication link to a second communication link. The method further includes receiving a second signal with the first communication link from the second communication link. The method furthe... | 12/13/2011 |
| 8027279 | Echo cancellation Embodiments related to echo compensation have been described and depicted. ... | 09/27/2011 |
| 8023438 | Analog signal path modeling for self-interference cancellation Described herein is a device that includes at least one radio frequency transmitter; at least one radio frequency receiver; a copy block configurable to output a digital representation of a currently transmitted signal and a model having a representation of at least... | 09/20/2011 |
| 7924752 | Voice and data exchange over a packet based network with AGC A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 04/12/2011 |
| 7916671 | Echo cancellation for duplex radios In a Frequency Duplex Division (FDD) radio, the transmit and receive signals are separated by frequency. In a wireless application, the power of the transmitted signal is typically much larger than the power of the received signal. A duplexer is used to separate the... | 03/29/2011 |
| 7898992 | Network apparatus with shared coefficient update processor and method thereof A network apparatus with a plurality of transport ports and a shared coefficient update processor is proposed. Each of the plurality of transport ports includes a PHY module. The coefficient update processor is coupled to each PHY module and is shared by the plurali... | 03/01/2011 |
| 7864718 | Echo cancellation device for full duplex communication systems An apparatus for echo cancellation in a transceiver of a full duplex communication system, where the transceiver includes a transmitter for transmitting a transmit signal and a receiver for receiving a receive signal, includes: an echo cancellation signal generator,... | 01/04/2011 |
| 7843858 | Crosstalk masking for digital subscriber loops A method is provided for reducing crosstalk problems in digital subscriber loop systems. The problems are associated with a second receiver on a second loop responding to a signal from a first transmitter on a first loop. The signal is actually destined for a first ... | 11/30/2010 |
| 7835311 | Voice-activity detection based on far-end and near-end statistics Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is me... | 11/16/2010 |
| 7808937 | Variable interference cancellation technology for CDMA systems An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft-projection operator, and a s... | 10/05/2010 |
| 7808936 | Systems and methods for facsimile echo cancellation The present invention is related to methods and systems for reducing or canceling echoes during fax communications. In an embodiment, during a fax call, a first fax signal from a first fax device intended for a second fax device is detected. Based at least in part o... | 10/05/2010 |
| 7778209 | Passive echo cancellation device and signal transmission method thereof The present invention refers to a passive echo cancellation device for use in a full-duplex communication system and its signal transceiving method. The full-duplex communication system comprises a transmitting end for sending a transmit signal to a wiring interface... | 08/17/2010 |
| 7778210 | Bridge circuit to suppress echoes in communication devices Bridge circuit for echo suppression for a reception signal of a communication device connected to a transmission line, to which can be supplied a reception signal received via the transmission line and a transmission signal to be transmitted by the communication dev... | 08/17/2010 |
| 7764634 | Suppression of acoustic feedback in voice communications Suppressing one or more frequency ranges of a signal prevents the occurrence of feedback in a voice data communications application. A system recognizes a frequency range in a signal where feedback occurs, or anticipates a frequency range where feedback is anticipat... | 07/27/2010 |
| 7760673 | Selectively adaptable far-end echo cancellation in a packet voice system A packet voice transceiver adapted to reside at a first end of a communication network and to send an ingress communication signal comprising voice packets to, and receive an egress communication signal comprising voice packets from, a second packet voice transceive... | 07/20/2010 |
| 7760672 | Method and device for the echo compensation of a reception signal A method and a device are provided for the echo compensation of a reception signal, a transmission signal being composed of a plurality of transmission subsignals which are generated in a corresponding plurality of signal paths, and a transmission combination signal... | 07/20/2010 |
| 7724693 | Network dependent signal processing A system processes signals exchanged between a near end terminal and a far end terminal over a communication path. The system selects the processing characteristics of a near end terminal based on characteristics of the communication path. The communication path may... | 05/25/2010 |
| 7720015 | Receiver ADC clock delay base on echo signals A device and method for a full-duplex transceiver is disclosed. The transceiver includes a transmitter DAC coupled to a transmission channel. The transmit DAC converting a digital transmission signal into an analog transmission signal. The transceiver further includ... | 05/18/2010 |
| 7656827 | Apparatus for, and method of, reducing noise in a communications system A communication line having a plurality of twisted wire pairs connects a plurality of transmitters, one transmitter at each end of each twisted wire pair, with a plurality of receivers, one receiver at each end of each twisted wire pair. Each receiver receives a com... | 02/02/2010 |
| 7649856 | System and method for transmitting and receiving wideband speech signals The system for transmitting and receiving a wideband speech signal includes an A/D converter for receiving an analog speech signal to convert it into a digital speech signal, a transmitter analysis filter for receiving the digital speech signal and dividing it into ... | 01/19/2010 |
| 7590077 | Canceller device and data transmission system Disclosed is a canceller device comprising a subcanceller for compensating the sampling phase shift of a plurality of analog-to-digital convert circuits for receiving a common input analog signal, converting the analog signal into digital signals responsive to respe... | 09/15/2009 |
| 7583621 | Method and apparatus for suppressing echo cancelling in a packet switched network A method, or corresponding apparatus, assumes a call is a Voice Band Data (VBD) call. The method disables a local echo canceller and transmits a tone that disables distal echo canceller(s) along a communications path across which the call is communicated. After disa... | 09/01/2009 |
| 7573839 | Line driver for an adaptive hybrid circuit A second output transmission signal (“TX2”) added to a line driver is a scaled version of the main output transmission signal (“TX1”). TX2 is scaled from TX1 by a variable scale factor K. An adaptive hybrid circuit... | 08/11/2009 |
| 7554933 | Echo cancellation device for full duplex communication systems An echo cancellation apparatus of a transceiver in a full duplex communication system is disclosed. The full duplex communication system includes a transmitter section for transmitting a transmit signal and a receiver section for receiving a receive signal. The echo... | 06/30/2009 |
| 7502336 | Multi-carrier communication using adaptive tone-pruning An apparatus, system, and method are described for multi-carrier communication using adaptive tone-pruning. The method may include transmitting a data-bearing signal over a plurality of tones on a communication loop within a plurality of communication loops and calc... | 03/10/2009 |
| 7502337 | Intelligent voice network monitoring using echo cancellation statistics Monitoring voice quality passively using line echo cancellation data across a telecommunications network and reporting monitoring data to a central network management system. Network is monitored for potential voice quality issues for pro-active isolation of problem... | 03/10/2009 |
| 7480262 | Telephone terminal, telephone system using telephone terminal and control method of telephone terminal A telephone terminal includes a receiving detector which detects a signal level of a receiving voice signal incoming from the main device, a transmitting detector which detects a signal level of a transmitting voice signal to transmit it to the main device, an adjus... | 01/20/2009 |
| 7468957 | Canceller circuit and controlling method A canceller circuit includes a subtractor, receiving an analog received signal and a replica signal of noise (e.g., echo and/or crosstalk), for carrying out subtraction on the received signal and the replica signal in a continuous time analog domain, an analog-to-di... | 12/23/2008 |
| 7460499 | Modulation noise estimation mechanism An on-chip reduced complexity modulation noise estimation mechanism for performing nonlinear signal processing to analyze modulation noise to determine whether a semiconductor device under test complies with the performance criteria set by specifications or a standa... | 12/02/2008 |
| 7460498 | System and method for detecting anomalies along telecommunication lines An anomaly detection system comprises an echo canceler and anomaly detection logic. The echo canceler has a plurality of taps respectively associated with a plurality of tap coefficients. The anomaly detection logic is configured to determine a difference between a ... | 12/02/2008 |
| 7457258 | Tunable filter to facilitate communications Systems and methods are described herein for changing the frequency response of a filter, such as a hybrid circuit. One or more tunable components are adjustable to provide the hybrid circuit with a frequency response corresponding to the characteristics of an assoc... | 11/25/2008 |
| 7450528 | Method and apparatus for performing echo suppression An echo suppression technique is provided in which speech sample energies are collected and accumulated over predetermined time frames. From this, a peak aggregate value and time delay are noted. This peak is generated by mathematical correlation between the histori... | 11/11/2008 |
| 7443812 | Voice and data exchange over a packet based network with AGC A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 10/28/2008 |
| 7440411 | Echo reduction to achieve a requested service A method for determining transmission characteristics over a first communication path and a second communication path, while an amount of the signal transmitted over the first communication path couples into the second communication path. In case of excess of capaci... | 10/21/2008 |
| 7436787 | Transceiver for full duplex communication systems A transceiver in a full duplex communication system includes a transmitting circuit coupled to a channel for transmitting a transmit signal to the channel, a cancellation signal generator coupled to the channel for generating a cancellation signal according to the t... | 10/14/2008 |
| 7433665 | Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same A communication circuit for an Ethernet or other network transceiver includes a first sub-circuit having a first input which receives a composite differential signal including first and second differential signal components, a second input which receives a different... | 10/07/2008 |
| 7426198 | Method and apparatus for performing spatial-division multiple access A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the ... | 09/16/2008 |
