Broadcom Corporation

Maxlinear, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Other

Avago Technologies International Sales Pte. Limited

Avago Technologies General IP Pte, Ltd.

Leonard Dauphinee

Lawrence M Burns

Ramon Alejandro Gomez

Donald George McMullin

Young J Shin

Loke Kun Tan

Adel Fanous

Francesco Gatta

Hanli Zou

Massimo Brandolini

Thomas J Kolze

Bruce Joseph Currivan

Lin He

James Y C Chang

Robindra B Joshi

Binning Chen

Charles Brooks

Curtis Ling

Giuseppe Cusmai

Steven T Jaffe

Stephen Edward Krafft

Steven John Krapp

Chonghua Zhong

Rahul Bhatia

Dongsoo Daniel Koh

Jianhong Xiao

Ray (Ramon) Gomez

Sridhar Ramesh

Rezaur Rahman Khan

Kenneth Scott Walley

Harold Raymond Whitehead

Stefan Szasz

Reza Khan

Bryan Juo-Jung Hung

Thomas Joseph Kolze

Donald Mcmullin

Harold Whitehead

Young Shin

Systems and methods are provided for reducing outage scope in cable networks with ideal taps. An ideal tap may have a plurality of ports that include at least an input port configured for receiving downstream (DS) signals from and transmitting upstream (US) signals to upstream nodes, an output port configured for transmitting downstream (DS) signals to and receiving upstream (US) signals from downstream nodes, and one or more drop ports for receiving signal from and transmitting signals to customer premise equipment (CPE) in the coaxial network. The ideal tap may further include one or more mitigation components configured for reducing scope of outage in the ideal tap, with the one or more mitigation components configured to, when an outage occurs in the ideal tap, provide or maintain inter-port connectivity within the ideal tap, the inter-port connectivity including at least connectivity between the input port and the output port.

Methods and systems for reducing outage scope in cable networks with ideal taps

Systems and methods are provided for supporting redundancy and outage resolution in coaxial networks with ideal taps.

Methods and systems for supporting redundancy and outage resolution in coaxial networks with ideal taps

Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.

Compensating for unwanted interference in a communications receiver

A method and apparatus is disclosed to restrict the delivery of video, audio, and/or data to unauthorized end users in a satellite communications system. The satellite communications system includes one or more satellite receiving antennas, commonly referred to as a satellite dish, to receive downlink communications signals from one or more satellites. The transmission received by the one or more satellite receiving antennas is converted by an outdoor unit (ODU) for transmission to one or more indoor units (IDUs). The ODU receives control information from one or more satellites from the downlink communications signals, commonly referred to as in-band, and/or from out-of-band communications signals. The ODU may use the control information to restrict access to one or more communications channels embedded within the downlink communications signals to the unauthorized end users.

Conditional access system for satellite outdoor unit

A system, method, and apparatus to allow an operator of a broadcast communication system, such as a cable television or satellite television service to provide some examples, to diagnose performance of this communication system remotely. The operator of a first communication device, such as a cable modem termination system (CMTS) to provide an example, may remotely diagnosis performance problems, or potential performance problems, occurring at a second communication device, such as a cable modem (CM) to provide an example, or a group of second communication devices. For example, the operator of the first communication device may view a spectrum analysis of communication signals being routed to, processed by, and/or provided by the second communication device, or group of second communication devices, to diagnose the performance problems, or the potential performance problems, in real time.

Spectrum analysis and plant diagnostic tool for communications systems

Systems and methods are provided for implementing and using multiband transceivers. In a transmitter that comprises a plurality of transmit paths, a frequency spectrum that is used for transmission may be assigned to the plurality of transmit paths. Performance in each of the plurality of transmit paths may be monitored during transmission of signals, and based on the monitored performance, at least one of segmentation of the frequency spectrum and assignment of the segments to the plurality of transmit paths may be dynamically modified. Performance monitoring may be based on spectrum usage, peak to average power ratio (PAPR), and/or performance related criteria (e.g., threshold, timeout duration, etc.). Modifying operation of a transmit path may comprise disabling or enabling that transmit path. The frequency spectrum may be segmented such that each of the segments is uniformly sized, or such that at least one of the segments is sized differently.

Power combining power amplifier architectures and methods

The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user.

Integrated cable modem

A method and apparatus is disclosed to determine communications receiver parameters from multiple channels of a received communications signal and to configure and/or adjust communications receiver parameters to acquire one or more channels from among the multiple channels of the received communications signal. A communications receiver observes a multi-channel communication signal as it passes through a communication channel. The communications receiver determines one or more communications receiver parameters from the multiple channels of the received communications signal. The communications receiver configures and/or adjusts communications receiver parameters to acquire the one or more channels from among the multiple channels of the received communications signal.

Communication receiver enhancements using multi-signal capture

Systems and methods are provided for implementing and using multiband transceiver architectures. In a transmit subsystem that comprises a plurality of transmit paths, a frequency spectrum that is used for transmission of signals may be segmented into a plurality of segments, and each of the segments may be allocated to one of the plurality of transmit paths. Further, performance in each of the plurality of transmit paths may be monitored during transmission of signals, and operation of the transmit subsystem and each of the plurality of transmit paths may be controlled based on the monitored performance. Such control may comprise dynamically performing one or more of modifying operation of one or more of the plurality of transmit paths, modifying assignment of plurality of segments to the plurality of transmit paths, and modifying segmentation of the frequency spectrum.

Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated. In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

Wideband power efficient high transmission power radio frequency (RF) transmitter

Systems and methods for demodulating a plurality of contiguous channels contained within a bandlimited portion of a radio-frequency (RF) input signal are provided. In an embodiment, the bandlimited portion of the RF input signal is down-converted to baseband. After down-conversion, the bandlimited portion overlaps at baseband with a mirror image of the bandlimited portion. The plurality of contiguous channels within the down-converted signal similarly overlap at baseband and subsequently occupy a bandwidth substantially equal to half that required before down-converting. Image rejection is performed in the digital domain to recover each of the plurality of overlapping channels.

Variable low IF receiver for multi-channel applications

Selectable interference cancellation in a communications receiver

Growing community of inventors

Irvine, CA, United States of America

Leonard Dauphinee