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| Number | Title | Issue Date |
| 8175262 | Per tone coprocessor architecture A system for processing subscriber line data signals uses a coprocessor to receive signals in a pre-determined order from a plurality of line interface cards. The coprocessor uses the pre-determined order to sort the data signals by tone and process all received sig... | 05/08/2012 |
| 8126137 | Vectored digital subscriber line system having modular vectoring arrangements The present invention relates to a vectoring chip unit in a DSL system connectable to a plurality of DSL ports of a DSL chip comprising means for receiving data from each of the plurality of DSL ports, means for performing pre-coding/cancellation in order to reduce ... | 02/28/2012 |
| 8073135 | Binder identification Methods, techniques and apparatus identify members and characteristics of binders and/or other groups of communication lines such as those in a DSL system. Information obtained includes the identification (for example, by scanning) of significant crosstalking “off... | 12/06/2011 |
| 8073136 | Methods and systems for compensating for alien crosstalk between connectors The present invention relates to methods and systems for minimizing alien crosstalk between connectors. Specifically, the methods and systems relate to isolation and compensation techniques for minimizing alien crosstalk between connectors for use with high-speed da... | 12/06/2011 |
| 7787615 | Telecommunications jack with crosstalk compensation and arrangements for reducing return loss The present disclosure relates to a telecommunications jack including a housing having a port for receiving a plug. The jack also includes a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the ... | 08/31/2010 |
| 7711109 | System and method for subliminal time domain duplexing The present invention provides methods and apparatus for transmitting a data-bearing signal and a non-data-bearing signal. One embodiment comprises communicatively coupling a data-bearing signal during a first time period and communicatively coupling a non-data-bear... | 05/04/2010 |
| 7664254 | System and method for upstream power backoff for xDSL A method and apparatus for modeling a network comprising a plurality of transmission lines is described, the method and system being adapted to measure loop parameters of first transmission line to provide measured loop parameters, determine a topology of the first ... | 02/16/2010 |
| 7567666 | Method and apparatus for crosstalk mitigation A method and apparatus for noise cancellation in a multi-channel communication system is disclosed. In one embodiment this system is configured to cancel FEXT on a victim channel utilizing the signals received on the other channels. The processing benefits gained by... | 07/28/2009 |
| 7412221 | Crosstalk reduction method, apparatus, and system A data driver drives a data signal on a channel, and a current mode driver drives a varying current on the channel to reduce crosstalk. ... | 08/12/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7362798 | Method for transmitting data to be transmitted using a subscriber modem A method transmits data to be transmitted using a subscriber modem of a subscriber access network with adjusted transmission power. The method includes selecting at least one transmission frequency band and subdividing the selected transmission frequency band into s... | 04/22/2008 |
| 7352824 | Multilevel pulse position modulation for efficient fiber optic communication Decreasing the average transmitted power in an optical fiber communication channel using multilevel amplitude modulation in conjunction with Pulse Position Modulation (PPM). This multilevel PPM method does not entail any tradeoff between decreased power per channel ... | 04/01/2008 |
| 7340710 | Integrated circuit binning and layout design system A method for binning and layout of an integrated circuit design which includes providing a table setting forth predefined widths of signal wires and corresponding spacing to shield wires, characterizing effects on timing, noise, and power distribution based on prede... | 03/04/2008 |
| 7337419 | Crosstalk noise reduction circuit and method In a semiconductor device, a method for reducing the effect of crosstalk from an aggressor line to a victim line begins with sensing the occurrence of a voltage change on the aggressor line that can induce a voltage pulse having a pulse magnitude that exceeds a puls... | 02/26/2008 |
| 7330516 | Power control method for remotely deployed communication service A power control method for transceiver units conveying data over discrete tones. The method includes the steps of: determining a transmit power over a physical channel for each individual tone, such that this transmit power maximizes a weighted function of data rate... | 02/12/2008 |
| 7315592 | Common mode noise cancellation A noise cancellation system configured to isolate and process a common mode noise signal to generate a cancellation signal. The cancellation signal is combined with a differential signal to cancel unwanted differential mode noise that coupled onto the differential s... | 01/01/2008 |
| 7302379 | DSL system estimation and parameter recommendation Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-charact... | 11/27/2007 |
| 7301894 | Method for providing fault tolerance in an XDSL system An XDSL system may include an active unit and a standby unit. The active unit may include a plurality of line circuits, which can be used to form XDSL loops with far end units. The standby unit may be synchronized with the active unit. In response to an indication, ... | 11/27/2007 |
| 7295623 | High-speed communications transceiver A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the tran... | 11/13/2007 |
| 7295603 | Method and system for virtual exchange reference impact (VERI) for use in mixed spectrum management in DSL A method and apparatus implements a Virtual Exchange Reference Impact (VERI) technique to define a pattern to shape the spectrum of a cabinet deployed system to minimize its impact, e.g., FEXT, into an exchange deployed system while achieving effective cabinet syste... | 11/13/2007 |
| 7289791 | Methods of recording voice signals in a mobile set The present invention relates to a mobile set integrating a memory efficient data storage system for the real time recording of voice conversations, data transmission and the like. The data recorder has the capacity to selectively choose the most relevant time frame... | 10/30/2007 |
| 7242761 | System and method for determining the transmit power of a communication device operating on digital subscriber lines A system for determining the transmit power of a communication device operating on a twisted pair subscriber line includes a communication server coupled to a first subscriber line and a second subscriber line. The communication server comprises a communication devi... | 07/10/2007 |
| 7239627 | Digital subscriber line services A system for extending the effective distance of digital subscriber line service is provided. The system includes a central office terminal having a data interface and a plurality of line units. The system further includes at least one communication link, coupled to... | 07/03/2007 |
| 7236463 | Transceiver for echo and near-end crosstalk cancellation without loop timing configuration A transceiver for echo and near-end crosstalk cancellation without a loop timing configuration. The transceiver comprises a receiver, a timing recovery circuit, a same-channel phase interpolator, an echo canceller, a near-channel phase interpolator and a near-end cr... | 06/26/2007 |
| 7228077 | Channel gain control for an optical communications system utilizing frequency division multiplexing Attenuation caused by dispersion in an optical fiber communications system is compensated. A number of low-speed channels is to be transmitted across an optical fiber. Each low-speed channel is allocated a different frequency band for transmission. The attenuation c... | 06/05/2007 |
| 7221577 | Bus twisting scheme for distributed coupling and low power The present invention relates to a system and method for equalizing the capacitance between/among n lines of a bus running in parallel for a portion of their length. The system and method include determining a twisting pattern for the n lines using an algorithm for ... | 05/22/2007 |
| 7215721 | Method and system for decoding multilevel signals A multilevel optical receiver can comprise a plurality of comparators that generally correspond with the number of levels in a multilevel data stream. Each comparator can be individually controlled and fed a decision threshold in order to decode a multilevel signal.... | 05/08/2007 |
| 7212580 | Multi-level signal clock recovery technique Clock recovery of a multi-level (ML) signal can be performed in a two-step process. First, the transitions within the ML signal can be detected by a novel transition detector (TD). And second, the output of the TD circuit can comprise a pseudo-non-return-to-zero (pN... | 05/01/2007 |
| 7209522 | Blast MIMO signal processing method and apparatus A technique for generating a demodulation ordering used in receive signal processing operations in a BLAST MIMO receiver that is based on a relative comparison of near-to-far resistance measures among vectors forming the estimated channel transfer function matrix is... | 04/24/2007 |
| 7190665 | Blind crosstalk cancellation for multicarrier modulation Crosstalk can be cancelled in a composite communication signal (ym) which includes a primary signal component associated with communication data and which also includes a crosstalk signal component produced by applying a crosstalk coupling function to cro... | 03/13/2007 |
| 7187711 | Modem wake-up in support of cross-talk cancellation in a modem pool environment In a communications system having a first modem pool for communicating with a second modem pool, each modem pool including a plurality of modems and having at least one NEXT cancellation filter, a method for modem wake-up including the steps of, during a first time ... | 03/06/2007 |
| 7187766 | Methods and systems for compensating for alien crosstalk between connectors The present invention relates to methods and systems for minimizing alien crosstalk between connectors. Specifically, the methods and systems relate to isolation and compensation techniques for minimizing alien crosstalk between connectors for use with high-speed da... | 03/06/2007 |
| 7173551 | Increasing data throughput in optical fiber transmission systems Data throughput rates are increased in an optical fiber communication system without requiring replacement of the existing optical fiber in a link. Channel throughput is increased by upgrading the components and circuitry in the head and terminal of an optical fiber... | 02/06/2007 |
| 7164764 | Method and apparatus for precode crosstalk mitigation A method and apparatus for noise cancellation in a multi-channel communication system is disclosed. In one embodiment this system is configured to cancel FEXT on a victim channel utilizing the signals received on the other channels. The processing benefits gained by... | 01/16/2007 |
| 7158563 | Dynamic digital communication system control Methods, apparatus and systems for dynamically controlling a digital communication system, such as a DSL system, collect information about digital communication lines in the system and adaptively and/or dynamically determine line and signal characteristics of the di... | 01/02/2007 |
| 7154845 | Method and system for measuring crosstalk utilizing a crossbar switch A method for measuring crosstalk in a data service system includes transmitting a signal using a first device. The first device is coupled to a solid state crossbar switch. The method includes coupling the first device using the crossbar switch to a first data line ... | 12/26/2006 |
| 7149256 | Multilevel pulse position modulation for efficient fiber optic communication Decreasing the average transmitted power in an optical fiber communication channel using multilevel amplitude modulation in conjunction with Pulse Position Modulation (PPM). This multilevel PPM method does not entail any tradeoff between decreased power per channel ... | 12/12/2006 |
| 7142619 | Long subscriber loops using automatic gain control mid-span extender unit Systems and methods are described for long subscriber loops using automatic gain control. A method includes extending a digital subscriber loop including: producing an output signal in a first direction from a variable gain amplifier at a mid-span extender unit resp... | 11/28/2006 |
| 7133461 | Stream transmission method and device A transmitter for implementing a stream transmission method is disclosed. Optionally, the transmitter first determines an equal weighting of a plurality of stream weights and transmits a plurality of transmission signals as a function of a plurality of data streams ... | 11/07/2006 |
| 7130395 | Method and system for reducing cross-talk and avoiding bridged taps The present invention establishes a communications link between a central office (CO) modem and a customer premise equipment (CPE) modem. The CO modem then evaluates the performance of the communications link. Impairments on the communications link are identified ba... | 10/31/2006 |
