Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8181208 | Media server and network for coaxial cable supporting legacy set top boxes A media server located in the home has video processing and storage capability. The media server receives video programming and control data from the cable plant head-end and receives status and control data from set top boxes (STBs). The media server can also recei... | 05/15/2012 |
| 8179920 | High efficiency preambles for communications systems over pseudo-stationary communication channels A method includes appending a preamble to a data packet and transmitting the preamble and data packet over a communication channel in the network. The preamble may be a Beacon, Admission, Broadcast, or High-Throughput Preamble. The Beacon Preamble includes the follo... | 05/15/2012 |
| 8176181 | Layer-2 management entity messaging framework in a network A communications system and method comprises the steps of performing at least one Layer 2 transaction comprising a plurality of wave cycles, each Layer 2 transaction including performing a first wave cycle, concatenating the received first responses from each of the... | 05/08/2012 |
| 8150351 | Receiver with tuner front end using tracking filters and calibration A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in-package (SIP) with other critical tuner components, which produces a highly integrate... | 04/03/2012 |
| 8121550 | Satellite interference canceling A satellite interference canceling system cancels the interference between two or more signals received by a satellite receiver. The signals can be two signals experiencing cross polarization interference or signals that experience interference from other satellite ... | 02/21/2012 |
| 8086170 | Satellite signal frequency translation and stacking An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same... | 12/27/2011 |
| 8085802 | Multimedia over coaxial cable access protocol A BCN network with BCN modems that communicate using predefined messages to establish, optimize and facilitate data communication. ... | 12/27/2011 |
| 8040962 | Channel response calculation in an OFDM receiver An efficient algorithm is described for use with OFDM receivers that characterizes the impulse response of a communication channel using frequency domain techniques that reduce computational and memory requirements, relative to time-domain cross-correlation methods,... | 10/18/2011 |
| 8023912 | Circuits, systems and methods for frequency translation and signal distribution Circuits systems and methods for frequency translation and signal distribution includes a downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal. Th... | 09/20/2011 |
| 8009725 | Translational switching system and signal distribution system employing same A translational switch system includes first and second translational switches, and a signal bus coupled therebetween. The first translational switch includes one or more inputs configured to receive a respective one or more first input signals, a first plurality of... | 08/30/2011 |
| 7995459 | Echo profile probe In an orthogonal frequency division multiplex (OFDM) communication network, a node transmits an echo profile probe to other nodes in the network. The echo profile probe is a message that allows characterization of the unique echo profile through the communication ch... | 08/09/2011 |
| 7941091 | Signal distribution system employing a multi-stage signal combiner network A multi-stage signal combining network includes two or more first stage combiner circuits, two or more filters, and at least one second stage signal combiner circuit. Each of the first stage combiner circuits has two or more input ports coupled to receive a respecti... | 05/10/2011 |
| 7937738 | Variable modulation unicast system A system is described that consists of a variable modulation unicast system that utilizes multiple modulation schemes in a cable network for unicast applications and is capable of assigning users to different channels of differing modulation schemes in the network b... | 05/03/2011 |
| 7936701 | Frequency scanning to form a communication network A node forms a network by scanning for an existing network. If an existing network is not found, the node operates as a network controller node of the first network and admits at least one client node to the first network. As a network controller node, the node desi... | 05/03/2011 |
| 7936669 | Systems and methods for flow control and quality of service Various embodiments of methods and systems for pausing and shaping data flow while supporting both parameterized and prioritized Quality of Service are disclosed. In some embodiments, a system for pausing and shaping data flow comprises an input buffer, a first paus... | 05/03/2011 |
| 7936206 | Transistor junction diode circuitry systems and methods Methods and apparatus for capacitive voltage division are provided, an example apparatus having an input and an output and including a first switched capacitor circuit. In some embodiments, the capacitive voltage divider includes first and second MOSFETs. A first ca... | 05/03/2011 |
| 7933281 | Method of bus configuration to enable device bridging over dissimilar buses Several local IEEE1394 buses are bridged together over a second bus type to create a global bus wherein each local bus node is able to address nodes across the global bus without the local nodes being aware of the bridging operation. A bridging device operates by tr... | 04/26/2011 |
| 7924348 | Method and apparatus for distributing multiple signal inputs to multiple integrated circuits An integrated circuit (IC) structure and method of distributing multiple broadband signal inputs to multiple integrated circuits, where each IC receives at least one original signal and outputs a replica of the original signals to other ICs and receives at least one... | 04/12/2011 |
| 7894547 | In-phase and quadrature-phase signal amplitude and phase calibration In-phase (I) and quadrature-phase (Q) signals are corrected for both amplitude and phase imbalances by passing the I and Q signals successively through a first amplitude correction stage, a sum-difference stage, and a second amplitude correction stage. The first amp... | 02/22/2011 |
| 7889759 | Broadband cable network utilizing common bit-loading A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN is disclosed. The BCN may include a transmitting node within the plurality of nodes where the transmitting node is ... | 02/15/2011 |
| 7825745 | Variable bandwidth tunable silicon duplexer A tunable duplexer using voltage-controlled varactors is presented. The center frequency, the pass band, and the stop band are each tunable to meet system requirements. A calibration circuit driving digital to analog converters produces the necessary voltages used i... | 11/02/2010 |
| 7821914 | Method of generation and set of implementation efficient preambles for OFDM systems In one embodiment, a network node includes a lookup table configured to store one or more of the following frequency domain bit sequences: i) x010101000110xxxxxxx011000000000; ii) x1011000111000000011011110xxxxxxxxxxxxx0110111001101001010111010; iii) x00110110111110... | 10/26/2010 |
| 7783958 | Broadband satellite system for the simultaneous reception of multiple channels using shared iterative decoder Multiple channels of received data are processed by a multiple channel demodulation and error correction decoding engine. The statistical uncertainty of processing channels with an iterative decoder are averaged across all the channels to reduce the total processing... | 08/24/2010 |
| 7746969 | High definition multi-media interface A receiver for a multi-channel system such as a HDMI system is presented. In accordance with the present invention, the receiver receives one of the plurality of channels and includes an analog portion, a digital-to-analog converter, and a digital control block that... | 06/29/2010 |
| 7738355 | Packet data transmission with optimum preamble length In a communication network, a sending node transmits a message with a multisegment preamble and data to a receiving node. The receiving node calculates characteristics of the sending unit, channel, or transmitted signal by processing preamble segments. Once an unkno... | 06/15/2010 |
| 7724639 | Method of bit allocation in a multicarrier symbol to achieve non-periodic frequency diversity In an orthogonal frequency division multiplex (OFDM) communication system, data bits are assigned to several carriers to create frequency redundancy in the transmitted waveform. Uniformly spaced carriers occupy the frequency band of the OFDM signal. Multipath nulls ... | 05/25/2010 |
| 7714760 | Apparatus and methods for direct quadrature sampling Methods and apparatuses are provided for performing direct quadrature sampling. One method for sampling quadrature baseband components of a bandpass signal includes receiving a bandpass signal, sampling the bandpass signal using a first sampling clock and a second s... | 05/11/2010 |
| 7694041 | Method for managing buffers pool and a system using the method Method and system for managing a buffers pool. The system may include a first processor coupled to a general memory having allocation ring and de-allocation ring portions; and a second processor to perform internal accounting of pointer(s) buffer(s). The second proc... | 04/06/2010 |
| 7660588 | Method and apparatus for improving radio location accuracy with measurements A method and apparatus to utilize a set of measurements (either partial or compete) to improve the accuracy of an initial position estimate for a wireless terminal. The initial position estimate for the terminal is first obtained (e.g., based on a cell-ID or an enha... | 02/09/2010 |
| 7653370 | Offset signal phasing for a multiple frequency source system A tunable multiple frequency source system employing offset signal phasing includes a first frequency source, a phase delay element, and a second frequency source configured to operate concurrently with the first frequency source. The first frequency source includes... | 01/26/2010 |
| 7647055 | System and method for integration of wireless computer network in position determining technology A wireless communication device, known as a mobile station (MS), contains a conventional wireless communication system and further comprises a wireless computer network communication subsystem and may also include GPS capability. The operator of the MS may utilize a... | 01/12/2010 |
| 7613234 | Near-end, far-end and echo cancellers in a multi-channel transceiver system A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complem... | 11/03/2009 |
| 7596378 | Idle mode handling in a hybrid GSM/CDMA network In a mobile wireless telecommunications system, which includes base stations (30) of a first type operating over a first air interface, and base stations (32) of a second type operating over a second air interface, a method for reselection by a mobile ... | 09/29/2009 |
| 7594249 | Network interface device and broadband local area network using coaxial cable A local area network uses coaxial cable wiring for interconnection of terminal devices. A frequency selective network interface device is placed at the building point of entry or another point in the wiring to reflect network signals transmitted by terminal devices ... | 09/22/2009 |
| 7590168 | Low complexity 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... | 09/15/2009 |
| 7580672 | Synthetic path diversity repeater A communication repeater for use in conjunction with a base transceiver subsystem (BTS) of a wireless communication system. The repeater expands the coverage area of the BTS and allows receivers to identify whether the source of a communication signal was directly f... | 08/25/2009 |
| 7573822 | Broadband network for coaxial cable using multi-carrier modulation A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to a... | 08/11/2009 |
| 7570710 | In-phase and quadrature-phase signal amplitude and phase calibration In-phase (I) and quadrature-phase (Q) signals are corrected for both amplitude and phase imbalances by passing the I and Q signals successively through a first amplitude correction stage, a sum-difference stage, and a second amplitude correction stage. The first amp... | 08/04/2009 |
| 7558551 | Signal distribution system cascadable AGC device and method A cascadable AGC amplifier in a signal distribution system includes a low noise cascadable amplifier having a through path and a cascadable output. The cascadable amplifier is also configured to provide AGC over a predetermined input power range. The cascadable AGC ... | 07/07/2009 |
| 7558534 | Reliability metrics for parameter estimates which account for cumulative error A method of producing a reliability metric for a parameter estimate derived from a signal using correlation analysis is described. The method begins by obtaining an indication of whether a non line of sight signal condition is present or likely and/or obtaining an i... | 07/07/2009 |
