Abstract: The present invention is an integrated set-top box having daisy-chaining capability. The set-top box includes a down-stream path having a tuner and a digital receiver portion and an up-stream path having a power amplifier. In one embodiment, the tuner, digital receiver, and power amplifier can all be disposed on a common substrate. In another embodiment, the tuner can be disposed on a first substrate, and the digital receiver and the power amplifier can be disposed on a second substrate. The set-top box includes a daisy-chain buffer having an input coupled to an input of the tuner and having an output coupled to an input of another receiving entity such as another set-top box, tuner, cable, etc., where the daisy-chain buffer is configured to provide a signal to drive the receiving entity.

Abstract: Hybrid location determination for wireless communication device. Various services that may be used by a wireless communication device within a particular location may be referred to as location based services (LBS). As such, means by which the location of a wireless communication device that may use such available services, within such a locale, is made by using more than one type of location determination approach. For example, a wireless communication device includes communication capability (e.g., RX and TX) in accordance with a first communication protocol (e.g., Bluetooth) and also includes a communication capability (e.g., RX only) in accordance with a second communication protocol (e.g., WiFi/WLAN (Wireless Local Area Network)). The RX capability is operative to assist in location determination for the wireless communication device based on knowledge of at least one wireless communication device that communicates with the wireless communication device.

Abstract: A wireless communication system and method is provided for the transfer and processing of data in accordance with specialized data transfer protocols while utilizing conventional base station equipment. For example, the wireless communication system may include a subscriber station that provides for the modification of data packets in accordance with a proprietary protocol and the addressing of the modified data packets to a server. The server is adapted to reconstruct the data packets for transmission to other local subscriber stations or to a packet-switched network. In additional embodiments, the base station itself rather than a server operates to reconstruct the data packets.

Abstract: A receiver for a multi-channel communication system can include a down-converter device, an analog-to-digital converter (ADC), and a plurality of digital channel selection devices. The down-converter device can be configured to down-convert a plurality of analog signals from the multi-channel communication system to a plurality of corresponding low intermediate frequency (IF) signals. The ADC can be configured to convert the plurality of corresponding low-IF signals to a plurality of digital signals. Further, each digital channel selection device from the plurality of digital channel selection devices can be configured to select a digital signal corresponding to a channel of interest from the plurality of digital signals for further processing.

Abstract: A transmitter operates in different modulation modes to support both GSM/EDGE and WCDMA cellular telephony applications. The transmitter modulates an outgoing signal to produce a complex modulated signal in a first modulation mode and a constant or variable envelope modulated signal in a second modulation mode. A local oscillation generator and mixer operate to up-convert the complex modulated signal to produce a modulated RF signal in the first modulation mode and to up-convert the phase component of the constant or variable envelope modulated signal to an RF phase signal and mix the RF phase signal with the envelope component thereof to produce the modulated RF signal in the second modulation mode.

Abstract: Embodiments of the present invention include systems and methods for generating a curvature compensated bandgap voltage reference. In an embodiment, a curvature compensated bandgap reference voltage is achieved by injecting a temperature dependent current at different points in the bandgap reference voltage circuit. In an embodiment, the temperature dependent current is injected in the proportional to absolute temperature (PTAT) and complementary to absolute temperature (CTAT) current generation block of the bandgap circuit. Alternatively, or additionally, the temperature dependent current is injected at the output stage of the bandgap circuit. In an embodiment, the temperature dependent current is a linear piecewise continuous function of temperature. In another embodiment, the temperature dependent current has opposite dependence on temperature to that of the bandgap voltage reference before curvature compensation.

Abstract: Angle of arrival and/or range estimation within a wireless communication device. Appropriate processing of communications received by a wireless communication device is performed to determine the angle of arrival of the communication (e.g., with respect to some coordinate basis of the wireless communication device). Also, appropriate processing of the communications may be performed in accordance with range estimation as performed by the wireless communication device to determine the distance between the transmitting and receiving wireless communication devices. There are two separate modes of packet processing operations that may be performed: (1) when contents of the received packet are known, and (2) when contents of the received packet are unknown. The wireless communication device includes a number of antenna, and a switching mechanism switches from among the various antennae capitalizing on the spatial diversity of the antennae to generate a multi-antenna signal.

Abstract: A network device includes a port, a buffer, a flow control module, and a service differentiation module. The port is configured to send and receive a packet, wherein the port is connected to a network entity. The buffer is configured to store the packet. The flow control module is configured to control the transmission of the packet within the network device. The service differentiation module is coupled with the buffer and the flow control module. The service differentiation module is configured to regulate storage of the packet in the buffer and to regulate the transmission of the packet from the network device to the network entity. The service differentiation module is also configured to determine excess bandwidth available within the network device and to allocate the excess bandwidth to transmit the packet to the network entity.

Abstract: A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simply correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol.

Abstract: Described herein is a context adaptive variable length code decoder for decoding macroblock adaptive field/frame coded video data. In one embodiment, there is presented a context adaptive variable length code decoder. The context adaptive variable length code decoder comprises a symbol decoder, and a left neighbor buffer. The symbol decoder decodes context adaptive variable length code symbols representing frequency coefficients associated with a partition of a macroblock. The left neighbor buffer stores information about another partition, the another partition being a left neighbor of the partition. The information about the another partition is overwritten by information about the partition.

Abstract: An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.

Abstract: Methods and systems for changing priority of slave frames in multiwire coexistence are disclosed. Aspects of one method may include communicating a high priority to the collocated WLAN device after a Bluetooth frame has started, the Bluetooth device may deassert a signal to a collocated WLAN device that indicates Bluetooth communication activity. For example, the deassertion may take place prior to a portion of a frame when said Bluetooth device transmits data. The Bluetooth device may also assert the signal that indicates Bluetooth communication activity. The Bluetooth device may then assert a signal that indicates Bluetooth priority status and the signal that indicates Bluetooth communication activity. After the Bluetooth device transmits a packet, the Bluetooth device may deassert the signal that indicates Bluetooth priority status and/or the signal that indicates Bluetooth communication activity.

Abstract: A wireless communication device includes an integrated circuit (IC) and an antenna system. The IC includes a processing module and a transceiver section. The processing module establishes a wireless communication protocol, converts outbound data into an outbound symbol stream, converts an inbound symbol stream into inbound data, and establishes operational parameters. The transceiver section converts an inbound RF signal into the inbound symbol stream and converts the outbound symbol stream into an outbound RF signal. The antenna system provides a plurality of antenna structures corresponding to the plurality of operational modes of the wireless communication device, wherein the antenna system provides one of the plurality of antenna structures in accordance with the operational parameters to transceive the inbound and outbound RF signals.

Abstract: A system or apparatus for monitoring an Integrated Circuit (IC) chip includes: a sense circuit at least partially constructed on the IC chip and configured to produce one or more sense signals each indicative of a corresponding process-dependent circuit parameter of the IC chip; and a digitizer module configured to produce, responsive to the one or more sense signals, one or more digitized signals each representative of a corresponding one of the sense signals. A controller is configured to determine a value of one or more of the process-dependent circuit parameters based on one or more of the digitized signals.

Abstract: Self-generated automated tests can use a pseudo-random number generator to select one or more arguments that are passed to programs and scripts. The random arguments are driven by a configuration file where the limits for the parameters are defined. Multidimensional functions with multidimensional parameters can be tested. Test duration can be limited by time, number of iterations, or by any of the multidimensional functions or parameters. A pseudo-random seed for each test is recorded so that a test case can be reproduced if a failure is detected or otherwise.

Abstract: A method for compensating a power amplifier based on operational-based changes begins by measuring one of a plurality of operational parameters of the power amplifier to produce a measured operational parameter. The method continues by comparing the measured operational parameter with a corresponding one of a plurality of desired operational parameter settings. The method continues by, when the comparing of the measured operational parameter with the corresponding one of a plurality of desired operational parameter settings is unfavorable, determining a difference between the measured operational parameter and the corresponding one of a plurality of desired operational parameter settings. The method continues by calibrating the one of the plurality of operational settings based on the difference.

Abstract: In an embodiment, an apparatus and method reduces a calibration settling time in an analog-to-digital converter (ADC). The ADC has a reference voltage supply. The reference voltage supply has an output. A filter capacitor is coupled to the reference voltage supply output. An isolation transistor is series-coupled between the filter capacitor and ground. The isolation transistor isolates the filter capacitor during calibration of the ADC.

Abstract: A number of features for enhancing the performance of a communication system, in which data is transmitted between a base station and a plurality of subscriber stations located different distances from the base station, are presented. The power transmission level, slot timing, and equalization of the subscriber stations are set by a ranging process. Data is transmitted by the subscriber stations in fragmented form. Various measures are taken to make transmission from the subscriber stations robust. The uplink data transmission is controlled to permit multiple access from the subscriber stations.

Abstract: In multimedia systems requiring secure access, a method and apparatus for constructing an access control matrix for a set-top box security processor are provided. A security processor may comprise multiple security components and may support multiple user modes. For each user mode supported, at least one access rule table may be generated to indicate access rules to a security component in the security processor. An access control list comprises information regarding the access rules for a particular user mode to the security components in the security processor. An access control matrix may be generated based on the access control lists for the user modes supported by the security component. The access control matrix may be implemented and/or stored in the security processor for verifying access rights of a user mode.

Abstract: Aspects of a method and system for packet rate shaping may include an MMU that enables classification of one or more packets based on a CoS and/or an egress port, and transmission of the packets in accordance with a specified packet rate based on the classification.