| Patent Number |
Title Of Patent |
Date Issued |
| RE39202 |
Digital video converter box for subscriber/home with multiple television sets |
July 18, 2006 |
| A digital video conversion system housing multiple converter chains of units in a single main box chassis. A preferred embodiment uses only a single conditional access unit to authorize decryption of premium channels in response to a smartcard. The conversion system allows a single c |
| RE38678 |
Method and apparatus for synchronizing a data communications system to a periodic digital impair |
December 28, 2004 |
| A pulse code modulation modem system is configured to transmit data from a first modem to a second modem over the public switched telephone network (PSTN). The PSTN employs robbed bit signaling (RBS) such that symbols affected by RBS arrive at the second modem in a periodic manner based |
| 7590674 |
Method and apparatus for generating a random bit stream |
September 15, 2009 |
| Presently disclosed is method and apparatus for generating a random bit stream by generating a random bit according to a polynomial expression, providing a modification function operative on the polynomial expression, and modifying the polynomial expression by modifying the modification |
| 7590248 |
Head related transfer function filter generation |
September 15, 2009 |
| A method for generating a head related transfer function comprises downconverting each of a plurality of measured impulse responses from a first sampling frequency to a second sampling frequency and then converting each downconverted impulse responses to a set of head related transfe |
| 7590163 |
Spread spectrum clock generation |
September 15, 2009 |
| There is provided a method of modifying a first clock to generate a second clock with reduced electromagnetic interference (EMI). The method comprises receiving the first clock, generating an upslew modulation form during an upslew frequency transition, generating a downslew modulation |
| 7586644 |
Color conversion system and method |
September 8, 2009 |
| A processor is provided that includes a primary memory of a processor and color conversion logic. The primary memory is to store a first color look-up table (LUT) related to a second color space. The color conversion logic is responsive to a received set of pixels, where each pixel of th |
| 7564932 |
Method and system for enhancing bit rate in DMT quad spectrum systems |
July 21, 2009 |
| Systems and methods for achieving a maximum bit rate in a Discrete MultiTone (DMT) system using a quad spectrum under constraints of avoiding interference with radio frequency interference (RFI) are described. At least one embodiment utilizes bins in notched areas for transmission ov |
| 7564928 |
System and method of frequency synthesis to avoid gaps and VCO pulling in direct broadcast state |
July 21, 2009 |
| A system and method for designing a broadband tuner such that VCO pulling is minimized and gaps in frequency coverage are avoided, while total power consumption is reduced, is disclosed. A broadband spectrum is divided into sub-bands and various multipliers to a local oscillator outp |
| 7555052 |
Method and system for a turbo trellis coded modulation scheme for communication systems |
June 30, 2009 |
| Method and System for evaluating a turbo-coding scheme suitable for VDSL2 systems. The scheme is a Turbo-Trellis Coded Modulation TTCM that makes use of a Parallel Concatenated Convolutional Code (PCCC) including an inner Latin square/rectangular matrix of Random sequence pattern Int |
| 7535606 |
CIS (contact image sensor) RYB (red-luminance-blue) sampling |
May 19, 2009 |
| A method of directly obtaining a Y value for a luminance/chrominance representation of a scanline of a color scanned image produced by a color contact image sensor device having a linear sensor array to collect reflected light, wherein said contact image sensor device comprises red, |
| 7532670 |
Hypothetical reference decoder with low start-up delays for compressed image and video |
May 12, 2009 |
| In one aspect, a method for encoding pictures is provided. The method is applied to each picture in a sequence of pictures, and the method comprises the steps of assigning a pre-decoder buffer removal time to the picture; selecting, for the picture, a number of bits, wherein the time |
| 7489693 |
Method and apparatus for automatically detecting virtual circuit settings and encapsulation type |
February 10, 2009 |
| Automatic detection of the virtual circuit setting and encapsulation type of a DSL line. A DSL modem determines the correct virtual path identifier (VPI) and virtual channel identifier (VCI) by sending OAM loopback requests to different VPI/VCI pairs until a valid loopback reply is r |
| 7486688 |
Compact packet switching node storage architecture employing Double Data Rate Synchronous Dynami |
February 3, 2009 |
| A two-chip/single-die switch architecture and a method for accessing a DDR SDRAM memory store in a switching environment are presented. The two-chip/single-die architecture includes an internal memory storage block on the single-die, an external memory storage interface to a Double D |
| 7484070 |
Selective memory block remapping |
January 27, 2009 |
| A memory of allocating memory for use by a subfunction of a computer chip, wherein the subfunction uses contiguous memory regions, the method comprising the steps of (a) creating a placeholder for contiguous memory buffers used by the subfunction of the chip by reserving a region of |
| 7474357 |
Decoding video signals to separate luma and chroma components |
January 6, 2009 |
| Provided are decoding methods and decoders for separating luminance and chrominance components of a video signal. In one aspect, a reference subcarrier of a first line of the video signal is used for subsequent lines by applying an appropriate rotation to the reference subcarrier of |
| 7466758 |
Method and system for dynamic interleaver adaptation scheme in VDSL |
December 16, 2008 |
| The present invention provides a method and apparatus for a new interleaver adaptation scheme that achieves "error free" and zero delay (interleaving--triangular) or near zero delay variation (interleaving--GCI), and with easier implementation but no additional memory required. The d |
| 7460649 |
Method and apparatus for single end loop testing for DSL provisioning and maintenance |
December 2, 2008 |
| A method and apparatus for single end loop testing for DSL provisioning and maintenance provides testing of the DSL loop using digital techniques including frequency compensation, matched filtering and median filtering, to remove strong background and enhance desired signal for peak |
| 7453600 |
Text region identification and enhancement during color copy |
November 18, 2008 |
| There is provided a method for enhancing text reproduction by a color copier in a copy of a document that includes both text and graphic regions, the method includes creating an ink density map from a data image of the document identifying a region of the ink density map as a text re |
| 7450604 |
Method and apparatus for establishing circuit connections over local area networks with frequenc |
November 11, 2008 |
| Local area network bandwidth is partitioned into periodic data frames. Data frames are further segregated into spectrum and time slots. Bandwidth reserved by assigning spectrum and time slots to particular circuit connections; enabling deterministic data transfer from source to desti |
| 7447375 |
Compensation for exposure time variation when scanning with CCD sensors |
November 4, 2008 |
| A method of compensating for image intensity variation in a scanline of a scanned image caused by variation in sensor integration time in a non-shuttered CCD image sensor comprising the steps of (a) determining for the scanline a multiplicative compensation factor, Kc (b) multiplying |
| 7447261 |
Adaptive frequency equalizer |
November 4, 2008 |
| An adaptive frequency equalization system providing an equalizer that has programmable taps that adjusts magnitude and phase of symbol information of a received signal and that provides equalized symbol information. The system includes a hard decision circuit that selects ideal symbol va |
| 7441850 |
Generic ink jet head fire logic |
October 28, 2008 |
| An inkjet firing architecture for use in association with a device utilizing an ink jet head. The inkjet firing architecture includes a fire synchronization block including an N-entry delay line, at least one vector sequencing block, and a vector compositing block. The N-entry delay |
| 7424048 |
Guard interval analysis method and apparatus |
September 9, 2008 |
| A receiver circuit processes a received signal to determine information regarding a guard interval therein. The receiver circuit typically forms digital samples from the received signal; generates a correlation function with peaks at positions that are determined by the size of the g |
| 7415261 |
Systems and method for a highly linear, low power mixer |
August 19, 2008 |
| A mixer for use in a transceiver comprises an LO switching pair and a folded transconductor. The mixer can be used as an upconversion or down conversion mixer and provides increased headroom and linearity, while still reducing current consumption. The mixer can be configured for diff |
| 7415075 |
Multi-rate encoding and decoding system |
August 19, 2008 |
| A multi-rate encoder and decoder system is disclosed. The multi-rate encoder and decoder system is capable of operating with a mother code or a subset code of the mother code and includes a trellis encoder having a set of inputs and a set of outputs corresponding to the mother code and a |
| 7414676 |
Integrated programmable tuner |
August 19, 2008 |
| An integrated tuner is programmable to optimize its components for either analog signal reception or digital signal reception. Power to the components is increased for analog operation and decreased for digital operation. The tuner also includes a selectable and integrated low noise |
| 7408999 |
Method and system for dynamic interleaver adaptation scheme in VDSL |
August 5, 2008 |
| The present invention provides a method and apparatus for a new interleaver adaptation scheme that achieves "error free" and zero delay (interleaving--triangular) or near zero delay variation (interleaving--GCI), and with easier implementation but no additional memory required. The d |
| 7403760 |
DC offset correction for direct-conversion receiver |
July 22, 2008 |
| A DC offset correction system for a direct-conversion receiver is disclosed that may include a DC feedback correction servo-loop in signal communication with a baseband section, where the DC feedback correction servo-loop is coupled to both the input and output of the baseband sectio |
| 7400693 |
System and method of echo cancellation |
July 15, 2008 |
| An economic low-complexity system and method for echo cancellation are disclosed. The system and method are particularly suited for multi-carrier VDSL using the U0 band. The techniques taught herein may be implemented in VDSL and VDSL2 systems and used to receive signals in three ban |
| 7398408 |
Systems and methods for waking up wireless LAN devices |
July 8, 2008 |
| A system and method for wireless waking computing devices over a computer network is provided. A signal is broadcast over the network that includes one or more device specific wake-up data sequences. Each device specific wake-up data sequence includes multiple iterations of the hardware |
| 7397809 |
Scheduling methods for combined unicast and multicast queuing |
July 8, 2008 |
| An improved combined Switching Data Unit (SDU) queuing discipline for unicast and multicast (Protocol Data Unit) PDU forwarding at a switching node is provided. Multicast SDU descriptors are replicated and stored in entries of a First-In/First-Out queue portion of a hybrid output port |
| 7376075 |
Circular constellations with coherent gain/differential phase and pilots |
May 20, 2008 |
| The modulation method and system of the presented herein involves mapping data onto a constellations comprising a set of concentric circles in a two-dimensional plane, one dimension for the amplitude and one for the phase. The phase dimension is coded differentially, while the amplitude |
| 7373425 |
High-speed MAC address search engine |
May 13, 2008 |
| Disclosed is an apparatus and method for storing and searching computer node addresses in a computer network system. In one embodiment, the apparatus comprises a frame forwarding device such as a switch. The switch includes two MAC address tables including a primary MAC address table |
| 7352797 |
Procedure for BPSK modulation with reduced envelope peaking |
April 1, 2008 |
| A system for and method of mapping successive bits of digital data into BPSK symbols using one or more BPSK symbol constellations such that orthogonal BPSK constellations are applied to successive bits of the digital data. The system and method may toggle between applying first and s |
| 7349497 |
Receiver circuit |
March 25, 2008 |
| A receiver circuit is for processing a received signal which includes at least a first portion and a second portion which repeats the content of the first portion after a repeat interval. For example, the receiver may be for DVB-T signals using COFDM. In order to ensure that the estimate |
| 7336683 |
Efficient communication system for reliable frame transmission over broad SNR ranges |
February 26, 2008 |
| An exemplary satellite communication system comprises a service provider unit communicably coupled to a number of subscriber units via satellite transmission. The service provider unit includes an encoder configured to encode source data into a serial transmit sequence, and is further |
| 7330544 |
Digital isolation barrier as interface bus for modems |
February 12, 2008 |
| The present application provides a variety of exemplary embodiments, such as modem systems, modem devices, modem connectors, host connectors, communication systems and communication cards. For example, there is provided a modem device for use to enable a host to communicate over a co |
| 7321762 |
Mechanism for reserving multiple channels of a single medium access control and physical layer |
January 22, 2008 |
| A method and apparatus are disclosed for enabling coexistence in a wireless local-area network between legacy stations and stations that can transmit higher-bandwidth signals. The illustrative embodiment employs a transceiver that can transmit and receive higher-bandwidth signals over a |
| 7315515 |
TCP acceleration system |
January 1, 2008 |
| A system and method for transmission control protocol (TCP) acceleration. Incoming acknowledgement (ACK) packets belonging to a TCP session are received, and an upstream queue is searched for queued acknowledgment packets belonging to the same TCP session. If the incoming acknowledgment |
| 7310768 |
Iterative decoder employing multiple external code error checks to lower the error floor |
December 18, 2007 |
| Iterative decoder employing multiple external code error checks to lower the error floor and/or improve decoding performance. Data block redundancy, sometimes via a cyclic redundancy check (CRC) or Reed Solomon (RS) code, enables enhanced iterative decoding performance. Improved deco |
| 7310369 |
SNR-related parameter estimation method and system |
December 18, 2007 |
| A method for estimating an SNR-related parameter, such as E.sub.S/N.sub.0, from one or more symbols. The number of symbols within a predetermined number of symbols that fall within one or more collection areas is counted. The count is then associated with a value of the SNR-related p |
| 7301379 |
Systems and method for a delay locked loop with false-lock detection |
November 27, 2007 |
| A DLL comprises detection circuitry configured to detect a too_slow and a too_fast operating state and correction circuitry configured to correct operation of the DLL when a too_fast or too_slow state is detected. The correction circuitry can be configured to swallow a pulse of the input |
| 7298222 |
Systems and method for automatic quadrature phase imbalance compensation using a delay locked lo |
November 20, 2007 |
| An automatic quadrature phase compensation system comprises an on-chip analog phase sense circuit capable of detecting small differences in quadrature phase error and providing a corresponding DC voltage, a voltage-controlled or programmable phase delay circuit to implement quadratur |
| 7295603 |
Method and system for virtual exchange reference impact (VERI) for use in mixed spectrum managem |
November 13, 2007 |
| 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 system performance, e.g |
| 7272109 |
Modified OFDM subcarrier profile |
September 18, 2007 |
| A 10 MHz channelized orthogonal frequency division multiplexing (OFDM) transmitter is provided that communicates using a modified OFDM packet structure with a half-rate oscillator having standard accuracy. The transmitter has an inverse fast fourier transform (IFFT) data processor th |
| 7269153 |
Method for minimizing time critical transmit processing for a personal computer implementation o |
September 11, 2007 |
| A personal computer's (PC) microprocessor is used to provide both the physical layer (PHY) and media access control (MAC) processing functions required to implement a wireless local area network (WLAN) adapter. This technique uses the microprocessor within the personal computer to pr |
| 7266811 |
Methods, systems, and computer program products for translating machine code associated with a f |
September 4, 2007 |
| Embodiments of systems, methods, and computer program products may facilitate translation of machine code associated with a first processor for execution on a second processor. Machine code associated with a first processor may be translated into a translated program that includes one |
| 7265873 |
Image processor that performs edge enhancement using a dynamic threshold |
September 4, 2007 |
| An image processing system that performs edge-enhancement on an image. The image processing system processes a region of the image at a given time. One specific pixel of an image region is compared to several surrounding pixels to determine the existence of a black edge or a white edge i |
| 7260066 |
Apparatus for link failure detection on high availability Ethernet backplane |
August 21, 2007 |
| A method for actively detecting link failures on a high availability backplane architecture. The backplane system includes redundant node boards operatively communicating with redundant switch fabric boards. Uplink ports of the node boards are logically grouped into trunk ports at on |
| 7257162 |
Hypothetical reference decoder for compressed image and video |
August 14, 2007 |
| One method for analyzing a bitstream having a plurality of compressed pictures comprises computing an initial arrival time and a final arrival time of a compressed picture, wherein the initial arrival time is equal to an earlier of the final arrival time of the immediately previous c |
