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| Number | Title | Issue Date |
| 8116386 | Method, apparatus and computer program product for providing improved gray mapping An apparatus for providing improved gray mapping may include a processor. The processor may be configured to divide gray value byte data into high priority portions and low priority portions distributed as constellation points in a constellation matrix and to provid... | 02/14/2012 |
| 8027388 | Methods and systems for adaptive communication One embodiment of the present invention relates to a method of transferring data in a communication system. In the method, an initial impulse noise protection value is determined. A number of redundancy bits is added to blocks of data to form codewords as a function... | 09/27/2011 |
| 7899124 | Methods and systems for adaptive communication One embodiment of the present invention relates to a method of transferring data in a communication system. In the method, an initial impulse noise protection value is determined. A number of redundancy bits is added to blocks of data to form codewords as a function... | 03/01/2011 |
| 7570693 | Low noise digital to pulse width modulated converter with audio applications The present invention relates to digital-to-analog conversion. In particular, it has application to conversion of pulse code modulated signals, such as used in CDs and DVDs, to a pulse width modulated or analog signal. ... | 08/04/2009 |
| 7535962 | Method and apparatus for signaling characteristics of a transmitted signal A method and apparatus are provided that allow exploitation of the common mode characteristics of a differential transmission network to provide an additional data signal. Signal (MODE) represents either a binary signal or a multi-valued signal to allow signaling of... | 05/19/2009 |
| 7443916 | Method and apparatus for communication in the presence of impulse noise A method, system and apparatus for reliable multicarrier communication in the presence of periodic impulsive interference is disclosed. A power level of noise in a signal is determined. An impulse noise in the signal is detected. A gain factor associated with the im... | 10/28/2008 |
| 7440508 | System and method for cellular communications A a system for allocating subcarriers to subscribers, comprising a subcarriers allocation controller, connected to a subcarrier modulation unit in a transmitter and to a subcarrier demodulation unit in a receiver for setting a group of subcarriers to be used therein... | 10/21/2008 |
| 7424332 | Audio signal processing apparatus and related computer program An audio signal processing apparatus includes first and second tables. The first table has coefficients. The second table has corrective values for correction of the coefficients in the first table. The corrective values are assigned to different sample numbers in a... | 09/09/2008 |
| 7412209 | Shifted channel characteristics for mitigating co-channel interference Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises shifting a characteristic of the first signal with respect to a like characteristic of the second sign... | 08/12/2008 |
| 7391713 | Phase rotation technique to reduce Crest Factor of multi-carrier signals A technique for Crest Factor reduction of multi-carrier signals using phase rotation is described. The multi-carrier signal could be in digital baseband, analog baseband, or analog RF (radio frequency). The multi-carrier signal is converted to individual baseband re... | 06/24/2008 |
| 7372916 | Process and devices for transmitting digital signals over buses and computer program product therefore Digital signals are transmitted on a bus at given instants selectively in a non-encoded format and an encoded format. The decision whether to transmit the signals in non-encoded format or in encoded format is taken in part, based on a comparison of the signal to be ... | 05/13/2008 |
| 7366264 | Method and system for reducing noise in a multi-carrier signal A receiver 100 for receiving a multi-carrier signal comprises detection means for detecting 801 the presence of impulse interference within the signal and identifying one or more samples of the signal affected by the impulse interference, means for sel... | 04/29/2008 |
| 7359442 | Block oriented digital communication system and method A method and system for estimating a time shift required for symbol synchronization in a block oriented digital communication systems such as an orthogonal frequency division multiplexing (OFDM) or a discrete multi-tone (DMT) data transmission system. The method use... | 04/15/2008 |
| 7359437 | Encoding method and system for reducing inter-symbol interference effects in transmission over a serial link A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e.g., encoded video data and encoded auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TMDS-like l... | 04/15/2008 |
| 7332950 | DLL measure initialization circuit for high frequency operation A memory device, delay lock loop circuit (DLL) and DLL reset circuitry are described. The DLL includes a shift register and a measured delay for pre-loading the shift register. The reset circuitry selectively filters a clock signal propagation through the measured d... | 02/19/2008 |
| 7332930 | Noise canceller circuit A noise canceller circuit capable of suppressing power supply noise, produced by transition of a data signal, even in case a data signal is increased in speed. The noise canceller circuit includes an output buffer 20 for outputting a first binary signal that ... | 02/19/2008 |
| 7330795 | Method and apparatus for providing signal analysis of a BioNEMS resonator or transducer An outputs signal, v(t), is generated from a bioNEMs transducer and mixed with a reference signal and then filtered to generate a correlator output, r(t). The correlator output is detected to generate a signal u(t) and then determined whether the signal u(t) satisfi... | 02/12/2008 |
| 7321618 | PCM upstream data transmission server A method for designing an equalizer and tracking performance for upstream PCM in a digital communications network is described. The invention optimizes upstream data rate rates for data transmissions in a network between a client modem a server modem. During trainin... | 01/22/2008 |
| 7321403 | Video signal transmitting/receiving system In a transmitting section for a video signal transmitting/receiving system for transmitting digital video signals using a plurality of transmission channels, video guard band signals are inserted into video signals associated with the transmission channels immediate... | 01/22/2008 |
| 7318225 | Object oriented software architecture for software reconfigurable wireless modem An abstract modem factory architecture and corresponding systems and methods are disclosed. This architecture and the corresponding systems and methods allow wireless modem control software for a wireless modem to be isolated from specific air interface implementati... | 01/08/2008 |
| 7313520 | Adaptive variable bit rate audio compression encoding An adaptive variable bit rate audio encoder and method that examines audio level information and detects various information in the audio data in a psychoacoustic model to create a quantization value and assign a mode tag to a single frame of audio. A bit rate is as... | 12/25/2007 |
| 7301966 | System and method for transmitting audio and video data over an asynchronous link that provides a synchronous recreation of the transmitter's data clock at a receiver A data transmission and distribution system that includes a transmitter and a receiver. The transmitter transmits a count value associated with a data clock of the transmitter to the receiver over an asynchronous link as part of an information payload that also incl... | 11/27/2007 |
| 7298711 | Echo cancellation in a communication device According to one exemplary embodiment, a communication device comprises a line driver, where the line driver provides an output signal. The communication device further comprises a digital echo canceller module coupled to the line driver, where the digital echo canc... | 11/20/2007 |
| 7295569 | Selecting a profile for an interface of a network device according to a margin Selecting a profile for an interface of a network device includes accessing profile sequences, where each profile sequence corresponds to an interface. Each profile sequence includes profiles that provide parameters for communicating data. The following are repeated... | 11/13/2007 |
| 7295570 | Determining a profile for an interface of a network device Selecting a profile for an interface of a network device includes accessing profile sequences, where each profile sequence corresponds to an interface. Each profile sequence includes profiles that provide parameters for communicating data. The following are repeated... | 11/13/2007 |
| 7296104 | Automated calibration of I/O over a multi-variable eye window A method and apparatus for automated calibration of I/O over a multi-variable eye window is provided. A transmitter may conduct data transmissions to a receiver of an integrated circuit (IC) over a plurality of signal lines. The data transmissions may be conducted a... | 11/13/2007 |
| 7280563 | Multi-carrier signal transmitter and multi-carrier signal receiver In transmitting first information necessary for gaining synchronism of transmission signal and second information which is the other information by determining a break of a single modulation unit with a simple structure and processing prior to Fourier transformation... | 10/09/2007 |
| 7272174 | Upstream data transmission A process transmits digital data to an A/D converter via an analog channel. The process includes generating a sequence of output signals by precoding a sequence of input signal points to precompensate for ISI in the analog channel. In the precoding is matched to the... | 09/18/2007 |
| 7263134 | Ethernet transceiver with single-state decision feedback equalizer Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i... | 08/28/2007 |
| 7260163 | Noise blanker using an adaptive all-pole predictor and method therefor A noise blanker (40, 106) monitors and removes noise from a sampled signal by adaptive filtering (98, 150) the sampled signal to generate trained adaptive filter prediction coefficients. The sampled signal is provided as an output signal when the noise... | 08/21/2007 |
| 7257164 | Class D amplifier The present invention relates to Class-D amplifiers, and in particular to bit-flipping sigma-delta modulator (SDM) implementations of such amplifiers. Such amplifiers are particularly although not exclusively suitable for audio equipment such as hi-fi and personal m... | 08/14/2007 |
| 7251270 | Systems and methods for fractional bit rate encoding in a communication system Systems and methods for encoding fractional bit rates in a communication system, such as a pulse amplitude modulation (PAM) communication system, are provided. The systems and methods enable a first transceiver to specify to a second transceiver a desired fractional... | 07/31/2007 |
| 7245675 | Upstream data transmission A process transmits digital data to an A/D converter via an analog channel. The process includes generating a sequence of output signals by preceding a sequence of input signal points to precompensate for ISI in the analog channel. In the preceding is matched to the... | 07/17/2007 |
| 7242725 | Adaptive broadband post-distortion receiver for digital radio communication system An adaptive broadband post-distortion receiver for wireless digital communications improves performance of a wireless digital communications system. The improved performance of the system includes improved linear AM-AM and AM-PM responses approaching saturation. Ind... | 07/10/2007 |
| 7239657 | Interference protection Apparatus and a method for enhancing the interference resistance of so-called RFID systems, wherein identification messages delivered from an identification device are longer than the time for which an anticipated interference or disturbance is calculated to continu... | 07/03/2007 |
| 7236451 | Dynamic time metered delivery Dynamic Time Metered Delivery (DTMD) is a unique physical layer communication Method. DTMD uses enhanced time-based techniques to enable and control the flow of more data/Hertz through a variety of transmission media including existing and new copper phone lines, co... | 06/26/2007 |
| 7225001 | System and method for distributed noise suppression The present invention advantageously provides a manner by which to further suppress noise superimposed upon an information signal without increasing distortion to the signal, e.g., speech. By distributing the noise suppression, the quality of the information signal ... | 05/29/2007 |
| 7224741 | System and method for cellular communications A system for allocating subcarriers to subscribers, comprising a subcarriers allocation controller, connected to a subcarrier modulation unit in a transmitter and to a subcarrier demodulation unit in a receiver for setting a group of subcarriers to be used therein. ... | 05/29/2007 |
| 7221711 | Multilevel data encoding and modulation technique The multilevel data encoding and modulation technique uses a pair of complementary logic sets. In its most basic form, the sets are binary sets each containing a line level for a logical one and a line level for a logical zero for a total of four logic levels. The e... | 05/22/2007 |
| 7215717 | Distortion compensation circuit Disclosed is a distortion compensation circuit that reduces the time for convergence of distortion compensation data, without impairing any stability of distortion compensation. The circuit includes an error computation and compensation data updating section that re... | 05/08/2007 |
