Patents Assigned to Entropic Communications
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Publication number: 20140035545Abstract: An integrated circuit voltage regulator uses a simple CMOS structure to implement a High Unity Gain BandWidth voltage regulator providing for low voltage ripple at the output of the regulator up to high frequencies in the hundreds of MHz range. A transconductor first stage is followed by an impedance cancellation second stage allowing DC gain to be set completely independently of the bandwidth.Type: ApplicationFiled: July 31, 2013Publication date: February 6, 2014Applicant: Entropic Communications, Inc.Inventor: Raed Moughabghab
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Patent number: 8639179Abstract: A method, apparatus, system, and computer program product for auto-installing an integrated receiver/decoder (IRD) includes issuing an auto-installation command from the IRD to an outdoor unit (ODU) and receiving a plurality of tones from the ODU in response to the auto-installation command, each tone representing a center frequency of available user bands (UBs). The auto-installation also includes acquiring a UB center frequency by the IRD, requesting the ODU to confirm a UB number corresponding to the acquired UB center frequency, and receiving confirmation from the ODU that a UB number corresponds to the acquired UB center frequency. The auto-installation also includes sending an acceptance of the assigned UB number from the IRD to signal the ODU that it may mark the assigned UB as assigned.Type: GrantFiled: May 20, 2011Date of Patent: January 28, 2014Assignee: Entropic Communications, Inc.Inventors: Peter Wong, Troy Brandon, Jon Huss
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Patent number: 8638808Abstract: A particular overall architecture for transmission over a bonded channel system consisting of two interconnected MoCA (Multimedia over Coax Alliance) 2.0 SoCs (Systems on a Chip) and a method and apparatus for the case of a “bonded” channel network. With a bonded channel network, the data is divided into two segments, the first of which is transported over a primary channel and the second of which is transported over a secondary channel.Type: GrantFiled: February 22, 2012Date of Patent: January 28, 2014Assignee: Entropic Communications Inc.Inventors: David Barr, Michail Tsatsanis, Arndt Mueller, Na Chen
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Patent number: 8638130Abstract: Low headroom line driver circuits are disclosed. In several embodiments, the line driver circuits include a first transistor, a second transistor, a third transistor and a fourth transistor, where the first transistor and second transistors; and the third and fourth transistors are matched, first and second matched impedances, first and second driver controls circuit configured to apply control signals to the gates of the first and second transistors; and the third and fourth transistors respectively. In addition, the first and third transistors; and the second and fourth transistors are configured as a pair of stacked transistors connected between the voltage supplies Vdd and Vss, the second and fourth transistors are configured as a pair of stacked transistors connected between the voltage supplies Vdd and Vss, the matched impedances are connected in series between nodes formed by the connection between the first and third transistors; and the second and fourth transistors.Type: GrantFiled: February 17, 2011Date of Patent: January 28, 2014Assignee: Entropic Communications, Inc.Inventor: Espen Olsen
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Patent number: 8634498Abstract: Various systems and methods for probing a communication channel. These systems and methods transmit an error vector probe packet from a first transmitter while a second transmitter is active and transmitting. A network device may receive the error vector probe packet and measure an error vector magnitude based on the received error vector probe packet. Using the error vector magnitude, the network device estimates channel characteristics such as signal-to-noise ratio, data capacity, etc. The transmission can occur when more than one transmitter is active and transmitting. At least some of the other transmitters are active and transmit an analog zero signal, e.g., all digital zeros on the input to the digital-to-analog converter of a network device when an error vector probe packet is transmitted.Type: GrantFiled: December 17, 2008Date of Patent: January 21, 2014Assignee: Entropic Communications, Inc.Inventor: Arndt Mueller
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Patent number: 8631450Abstract: A BCN network with BCN modems that enable network wired devices to communicate over a typical home coaxial network that may include passive splitters and different types of coaxial cable.Type: GrantFiled: September 19, 2005Date of Patent: January 14, 2014Assignee: Entropic Communications, Inc.Inventors: Brett Bernath, Anton Monk, Itzhak Gurantz, Ladd El Wardani, Ron Porat, Yusuf Ozturk, Ron Lee, Wee-Peng Goh, Magnus Berggren
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Patent number: 8630507Abstract: Image data processing is facilitated. According to an example embodiment, image data is processed using photometric similarity and, where appropriate, a classification of sample pixels for the image data. In some applications, a trained bilateral filter function is used with a filter coefficient selected for a particular classification of image data to filter artifacts in the image data.Type: GrantFiled: September 12, 2008Date of Patent: January 14, 2014Assignee: Entropic Communications Inc.Inventors: Gerard De Haan, Hao Hu
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Patent number: 8619016Abstract: Active matrix display module (10) comprising a driving circuit with a source driver (20) and a gate driver (12). Furthermore, a display panel (11) with pixels consisting of three sub-pixels is provided. The sub-pixels are arranged in rows and columns and each sub-pixel comprises a sub-pixel selection transistor arranged at an intersection of a row and a column. The gate driver (12) is employed to select and deselect all pixels of a row of the display panel (11) and the source driver (20) is employed for providing the required voltage levels to all sub-pixels of a currently selected row, said voltage levels corresponding to the desired intensity for each color. Demultiplexer switches (21) are integrated onto the display panel (11) for demultiplexing columns of the display panel (11). The active matrix display module (10) further comprises means (18) for color shift compensation. These means (18) implement a selection order for the selection of the sub-pixels to compensate unintentional color shifts.Type: GrantFiled: December 8, 2006Date of Patent: December 31, 2013Assignee: Entropic Communications, Inc.Inventors: Patrick Oelhafen, Patrick Brunner
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Patent number: 8621539Abstract: A physical layer transmitter that communicates between nodes in a broadband cable network by transmitting and receiving packets containing data and control information. Packets are constructed by the physical layer transmitter and transmitted to one or more receiving nodes that are capable of processing the packets. Packets are directed to specific nodes utilizing link layer control data. The packets may also contain control information that may include formatting, encoding and modulation parameters that are capable of being processed by the appropriate receiving nodes. The physical layer transmitter allows node-to-node communication within a broadband cable network and each node in the network is capable of communicating with every other node in the network.Type: GrantFiled: September 29, 2005Date of Patent: December 31, 2013Assignee: Entropic Communications, Inc.Inventors: Anton Monk, Ron Porat, Wee Peng Goh, Magnus Berggren, Ron Lee, Edward Warner, Brett Bernath, Yusuf Ozturk
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Patent number: 8615061Abstract: A method and apparatus in which a Tap-Weight Computer (TWC) calculates a Tap-Weight Vector (TWV) are provided. The TWV is coupled to a register in an adaptive filter module. Each adaptive filter module includes several adaptive filters that each include a tapped delay line. The input to the tapped delay line is one of a plurality of potential interfering signals. The TWV controls the weighting of the outputs from the taps off the delay line. The weighted outputs from each tapped delay line are subtracted from a received signal which potentially includes interference from the potential interfering signals. The TWC is multiplexed to each of the plurality of adaptive filters so that each adaptive filter is loaded with a TWV calculated by the TWC to reduce the amount of interference contributed by a particular potential interfering signal coupled to an input to that particular adaptive filter.Type: GrantFiled: July 28, 2011Date of Patent: December 24, 2013Assignee: Entropic Communications, Inc.Inventors: Branislav Petrovic, Michail Tsatsanis
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Patent number: 8611408Abstract: An equalizer (200A) comprises a feedforward filter (210), wherein the feedforward filter includes a plurality of feedforward filter taps, coefficients are associated with the plurality of feedforward filter taps, and values of all of the coefficients associated with the plurality of feedforward filter taps are dynamically determined. In some embodiments, the equalizer also comprises a decision feedback equalizer (216).Type: GrantFiled: April 8, 2005Date of Patent: December 17, 2013Assignee: Entropic Communications, Inc.Inventors: Jingsong Xia, Richard W. Citta, Scott M. Lopresto
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Patent number: 8611218Abstract: A method includes determining a first aggregate received power level of an orthogonal frequency division multiplexed (OFDM) signal received at a first network node, adjusting a nominal PHY Margin an amount that is dependent upon a measurement of an aggregate received power level of the OFDM signal, determining a data transmission rate based on the adjusted nominal PHY Margin, and receiving data being transmitted in accordance with the data transmission rate at the first node.Type: GrantFiled: November 5, 2009Date of Patent: December 17, 2013Assignees: Entropic Communications, Inc., DIRECTV Group, Inc.Inventors: Edward Warner, Robert Popoli
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Patent number: 8605021Abstract: The invention relates to a display device and to a method of controlling a display device. A display device with a plurality of pixels arranged in rows n and columns m is presented so as to render possible an energy saving through charge sharing in the display device, in particular an active matrix display, in which the pixels can be activated via control lines (6), and with a row driver circuit (4) for driving the n rows with a row voltage (Vrow), wherein the rows of the display device can be consecutively selected from 1 to n, and with a column driver circuit (3) for driving the m columns with a column voltage (Vcol) corresponding to the picture data of the pixels (8) of the selected line to be displayed, and wherein it is provided for a transition from a selected row n to another row n+1 that the row voltage (Vrow) is connected to an intermediate voltage level (VZ), and the row n+1 is first connected to the intermediate voltage level (VZ) and subsequently is charged up to the required row voltage (Vrow).Type: GrantFiled: October 17, 2003Date of Patent: December 10, 2013Assignee: Entropic Communications, Inc.Inventor: Christopher Rodd Speirs
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Publication number: 20130315314Abstract: A video processor comprises an instruction set of programmed operations for operating on video data. The instruction set has an instruction which corresponds to a programmed operation for performing a motion estimation calculation between pixel data in frames of video data. The programmed operation causes the processor to calculate a measure of motion estimation at each of a plurality of search locations within a search window. The processor comprises a plurality of calculation units (6), each of the units (6) being operable to perform a calculation, or partial calculation, at a different search location. The plurality of calculation units (6) perform the calculations, or partial calculations, in parallel. The measure of motion estimation calculation is one of: a sum of absolute difference (SAD) calculation; a mean square error (MSE) calculation, a mean absolute error (MAE) calculation.Type: ApplicationFiled: August 1, 2013Publication date: November 28, 2013Applicant: Entropic Communications, Inc.Inventor: Bijo Thomas
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Publication number: 20130315595Abstract: A method, system and computer program for implementing TDD in an EPoC network. An OLT or CLT scheduler segregates the US traffic from the DS traffic to avoid collisions. An OLT transmits and receives payloads through an OCU. An OLT or CLT transmits downstream payloads and GATE grants destined for CNUs during the TDD downstream phases. The OLT or CLT schedules IPGs between TDD phases. The OLT or CLT schedules payloads and REPORTs to be transmitted from CNUs only during the TDD upstream phase according to the GATE grants in the DS phase. The OLT or CLT receives CNU REPORTs late in the upstream phase that inform the scheduler about pending upstream traffic to be granted in subsequent TDD phases.Type: ApplicationFiled: May 8, 2013Publication date: November 28, 2013Applicant: Entropic Communications, Inc.Inventor: David Barr
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Patent number: 8593983Abstract: A method for characterizing a communication channel on a communication network includes receiving within a network node at least one silent symbol transmitted together with a packet, and determining within the network node the amount of energy received by the network node during the silent symbol. Determining the amount of energy may include comparing the amount of energy received during a first silent symbol with the amount of energy received during subsequent silent symbols. The packet transmitted with the silent symbol may include a preamble and the silent symbol may be transmitted before the preamble. The packet may include data symbols and the silent symbol may be transmitted for a duration that is shorter than the duration of one data symbol transmitted in the packet.Type: GrantFiled: January 25, 2011Date of Patent: November 26, 2013Assignee: Entropic Communications, Inc.Inventor: David Barr
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Patent number: 8587722Abstract: The present invention provides a system and method for automatically controlling the phase of the clock signal for sampling an HDTV signal, which implements a new and improved method for phase detection. The system and method utilize the standard format of an HDTV signal to consistently ensure accurate phase detection. Particularly, the system and method detect the target phase for the sampling clock using a tri-level sync pattern that exists at the beginning of each display line. This tri-level sync pattern or “sync pulse” is well suited for phase detection since it includes several static areas separated by substantial transitions. Furthermore, by using the sync pulse of the HDTV signal, the system and method provide consistent and accurate results, since the sync pulse will not change regardless of the whether the video data is static or in motion.Type: GrantFiled: October 8, 2004Date of Patent: November 19, 2013Assignee: Entropic Communications, Inc.Inventors: Jiande Jiang, Kenny Tseng, Walter C. Lin, Jung-Herng Chang
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Patent number: 8588055Abstract: 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 channel between each node pair. The echo profile is used to calculate the cyclic prefix length needed for optimum communication from one node to the other.Type: GrantFiled: February 22, 2011Date of Patent: November 19, 2013Assignee: Entropic Communications, Inc.Inventors: Wee Peng Goh, Anton Monk, Ron Porat
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Patent number: 8588250Abstract: 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 capable of sending a probe signal to the plurality of nodes, and at least one receiving node within the plurality of nodes in signal communication with the transmitting node. The at least one receiving node is capable of transmitting a first response signal in response to receiving the probe signal. The first response signal includes a first bit-loading modulation scheme determined by the at least one receiving node. The transmitting node is further capable of determining the common bit-loading modulation scheme from the first response signal.Type: GrantFiled: February 14, 2011Date of Patent: November 19, 2013Assignee: Entropic Communications, Inc.Inventors: Anton Monk, Brett Bernath, Yusuf Ozturk, Ron Porat
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Patent number: 8582576Abstract: 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 translating local bus node addresses to a global bus for communication over the second bus type. Alternatively, the local bus node identification process is controlled by the bridging device operating as the root node to cause the local nodes to be identified with a node address that is unique for the global network. The second bus type operates as a backbone for the global network and can be any type of communication bus or network with capability to transport the local bus traffic. The bridging devices that interface the local IEEE1394 buses to the backbone contain portals specific to each bus type that can communicate data between the dissimilar buses.Type: GrantFiled: March 31, 2011Date of Patent: November 12, 2013Assignee: Entropic Communications, Inc.Inventors: Zong Liang Wu, Ronald B. Lee, Yusuf Ozturk