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| Number | Title | Issue Date |
| 7372873 | Reconstructing a partial transport stream A method and a system for reconstructing a partial transport stream are described. One embodiment of the method includes time-stamping each packet when the packet arrives, storing of the selected subset of packets and the associated timestamps in a storage medium, r... | 05/13/2008 |
| 7373281 | High bandwidth oscilloscope A method for improving bandwidth of an oscilloscope involves, in preferred embodiments, the use of frequency up-conversion and down-conversion techniques. In an illustrative embodiment the technique involves separating an input signal into a high frequency content a... | 05/13/2008 |
| 7356049 | Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus ... | 04/08/2008 |
| 7346137 | Nonuniform oversampled filter banks for audio signal processing A non-uniform filter bank is created by joining sections of oversampled uniform filter bands that are based on complex exponential modulation (as opposed to cosine modulation). Each filter bank handles a given, non-overlapping frequency band. The bands are not of un... | 03/18/2008 |
| 7330664 | Data transmitter and method of generating none return to zero optical signal with clock component amplification The present invention relates to none return to zero (NRZ) modulation method. The NRZ optical modulation is performed by combining a clock signal and NRZ data at a sending end and signal distortion capable of being generated when the clock signal and the NRZ data ar... | 02/12/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7315538 | Methods and systems for providing network access service utilizing multiple asymmetric DSL modems per service point Methods and systems provide network access service for a subscriber by utilizing multiple asymmetric DSL modems per service point such that the available bandwidth is the aggregation of the multiple asymmetric DSL modems. One asymmetric DSL modem of a service point ... | 01/01/2008 |
| 7313130 | Spectrally compatible mask for enhanced upstream data rates in DSL systems A method and apparatus for providing extended upstream data transmission in a band having a lowest frequency f0 by an end user terminal unit in an asymmetric digital subscriber line communication between a central office terminal unit and the end user ter... | 12/25/2007 |
| 7308004 | Method and apparatus of multiplexing and demultiplexing communication signals A method and apparatus for multiplexing and demultiplexing communication signals are described herein. In one embodiment, an apparatus includes first sample logic to sample a plurality of communication signals each including a clock component and a non-clock compone... | 12/11/2007 |
| 7305046 | I/Q modulator with carrier predistortion An I/Q modulator used for processing an I/Q signal to obtain a predistorted output signal. The I/Q signal has an I component and a Q component, and comprises a predistorter for predistorting, with a predistortion signal, a carrier signal, which comprises a first sub... | 12/04/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7289554 | Method and apparatus for channel equalization and cyclostationary interference rejection for ADSL-DMT modems A method and apparatus for efficient filter structure for an enhanced operation of an ADSL-DMT modem on a subscriber loop with an environment consisting of ISDN interference. The method performs equalization of the channel by impulse response shortening and at the s... | 10/30/2007 |
| 7222055 | High bandwidth real-time oscilloscope A method and apparatus for digitizing a signal. The method comprises the steps of receiving an input analog signal, splitting the received input analog signal into a plurality of signals and frequency converting at least one of the signals in accordance with a prede... | 05/22/2007 |
| 7219037 | High bandwidth oscilloscope A method for improving bandwidth of an oscilloscope involves, in preferred embodiments, the use of frequency up-conversion and down-conversion techniques. In an illustrative embodiment the technique involves separating an input signal into a high frequency content a... | 05/15/2007 |
| 7187696 | Selectable training signals based on stored previous connection information for DMT-based system Training signals can be chosen based on stored prior connection information to reduce the use of extra tones in transmitted training signals and thereby improve receiver performance. By choosing training signals based on the stored prior connection information, it i... | 03/06/2007 |
| 7173982 | Method and circuit for digitally correcting the frequency of a signal A method and a circuit for the digital correction of a frequency of a signal, especially for use in a transmitter/receiver circuit include rotating a signal “pointer” (i0, q0) using a CORDIC algorithm, through a predetermined angle in a complex I/Q plane corresp... | 02/06/2007 |
| 7154911 | Method and apparatus for service multiplexing over telephone networks which employ bridged tap construction A method and apparatus for service multiplexing over telephone networks which employ bridged tap construction to allow the simultaneous delivery of different services to physically separated subscribers over a shared single pair of wires. Service is provided to one ... | 12/26/2006 |
| 7145956 | Method for achieving a target bit rate in a multi-carrier data communication system A bit loading for a channel of a multi-carrier data communication system is generated. The bit loading has a target bit rate and satisfies predetermined performance criteria. When the channel is loaded according to the bit loading, a minimal number of sub-channels o... | 12/05/2006 |
| 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 |
| 7136423 | Side tones packets injection (STPI) for PAR reduction A method and system for reducing the power to average ratio (PAR) at the transmitter after the up sampling and interpolation filter. In the time domain, Side Tone Packets Injection (STPI) system and method detects the optimal peaks that will result in having a low P... | 11/14/2006 |
| 7136664 | Method for determining a control channel in a trunked radio communications system utilizing a scan list A receiving device in a trunked radio communications system retrieves a first frequency from a scan list and tunes to about the first frequency. If no control channel messages are decoded at the first frequency, then the receiving device tunes to about a second freq... | 11/14/2006 |
| 7130335 | Multi-line ADSL modem A multi-line ADSL modem (12) and network (10) whereby the multi-line ADSL modem (12) has connections to several ADSL modems (14) at a central office (CO) (16) through a master loop (18), shared loops (20, 22), and/or ... | 10/31/2006 |
| 7127016 | Nonuniform oversampled filter banks for audio signal processing A non-uniform filter bank is created by joining sections of oversampled uniform filter bands that are based on complex exponential modulation (as opposed to cosine modulation). Each filter bank handles a given, non-overlapping frequency band. The bands are not of un... | 10/24/2006 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7099349 | xDSL-based communication system Broadband communication systems and methods of the type utilizing xDSL packet-based technologies are configured to provide packet-based point-to-multipoint communication between an upstream xDSL modem and a plurality of downstream xDSL modems. The system preferably ... | 08/29/2006 |
| 7092575 | Moving image encoding apparatus and moving image encoding method An encoding preprocessing part 1 extracts the amount of image feature relative to image data and passes the amount of image feature to a control part 2 as image feature amount information 11 and also sends image data 10 to an encoding par... | 08/15/2006 |
| 7092412 | Method and apparatus for long haul high speed data transmission over XDSL pseudo channels A method and apparatus for extending existing fiber and local area networks across digital subscriber lines, at matching data rates is disclosed. A DSL transceiver system is disclosed with one or more gateways coupled to at least one digital signal processor (DSP). ... | 08/15/2006 |
| 7082171 | Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul... | 07/25/2006 |
| 7072390 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 07/04/2006 |
| 7068592 | System and method for increasing payload capacity by clustering unloaded bins in a data transmission system A system and method for increasing payload in a data transmission system. In architecture, the system comprises a modulation device configured to modulate data bins to produce bin-clusters, a mechanism to load the bin-clusters with data, a transmitter configured to ... | 06/27/2006 |
| 7054296 | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ... | 05/30/2006 |
| 7047456 | Error correction for regional and dynamic factors in communications In an aspect, a method and system is provided to receive and analyze tracked and reported broadcasted data errors, based on a path of the broadcasted data, regional factors including terrain, dynamic factors including weather and season, and retransmission factors. ... | 05/16/2006 |
| 7042857 | Uplink pilot and signaling transmission in wireless communication systems Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for... | 05/09/2006 |
| 7039105 | Adaptive information compression An adaptive information compression system and method conserves information bandwidth or storage space by compressing underutilized information present in a wide-band signal into a much narrower maximum utilized information band signal. This is achieved by obtaining... | 05/02/2006 |
| 7039364 | Method for performing measurements in a wireless terminal and a wireless terminal The invention relates to a method for performing measurements in a wireless terminal comprising a receiver for receiving radio frequency signals, means for taking samples from the received signals and means for performing measurements on the basis of said samples. T... | 05/02/2006 |
| 7039372 | Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ... | 05/02/2006 |
| 7039101 | Arrangement for multichannel signal transmission between mobile units A device for multi-channel signal transmission between mobile units, including at least one first transmitter/unit that is coupled to at least one second transmitter/receiver unit via transmitting means. Further more the first transmitter/receiver unit and the secon... | 05/02/2006 |
| 7027786 | Carrier and clock recovery using universal frequency translation Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. ... | 04/11/2006 |
