Abstract: A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow communication between the two devices. The RFID reader utilizes an analog front end and a digital backend. In the receiver portion of the transceiver, the front end of the RFID reader uses a pair of down-conversion mixers to demodulate a received signal into in-phase (I) and quadrature (Q) components and analog-to-digital converters (ADC) digitize the signal. A digital signal processor (DSP) in the back end processes the digital signal and uses a matched filter for data detection. The RFID tag receives an inductively coupled signal from the reader and the receiver portion of the tag uses a pulse/level detector that employs an analog comparator and a sample and hold circuit to detect the received signal. A digital decoder/controller is used to decode the incoming data and to establish a sampling clock for the pulse/level detector.

Abstract: A device includes a first integrated circuit, a second integrated circuit and an RF bus controller. Each of the first and second ICs includes a radio frequency (RF) bus transceiver. The RF bus controller is coupled to control intra-device RF communications between the RF bus transceivers of the first and second ICs.

Abstract: A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input stages for much of the input stage. More specifically, the embodiments of the present invention include separate amplification and mixing stages whose outputs are combined by a stabilized load with circuitry for removing a common mode feedback signal. As such, downstream components, such as amplifiers, filters, analog-to-digital converters, and other input path circuit elements, are not duplicated and may be used regardless of whether the dual-band transceiver is operating in a first or second frequency band. Operation is, in the described embodiment, only one frequency input at a time though the invention is not limited to such operation.

Abstract: One embodiment of the present invention provides a system that performs layer 3 (L3) aware switching in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system maintains a set of mapping information which indicates a correspondence relationship between a logical link identifier of a remote node, a medium access control (MAC) address for a subscriber coupled to the remote node, and an IP address for the subscriber. Upon receiving a packet which contains an IP address, the system selectively attaches a proper logical link identifier to the packet based on the mapping information and the IP address contained in the packet, thereby allowing only one proper remote node to receive the packet.

Abstract: A (radio frequency) RF reception system includes an RF receiver that demodulates an RF signal at a sequence of selected carrier frequencies. A frequency hop module, coupled to the RF receiver generates the sequence of selected carrier frequencies. A programmable antenna is tuned to each of the sequence of selected carrier frequencies to receive the RF signal via an antenna current.

Abstract: A wireless transceiver includes a plurality of antennas. A plurality of signal recovery circuits generate a selected number of received signals from a first subset of the plurality of antennas, based on a control signal. A receiver section recovers an inbound data stream from the selected number of received signals. A plurality of transmitter sections generate a selected number of transmitted signals to a second subset of the plurality of antennas, based on the control signal, wherein the intersection between the first subset of the plurality of antennas and the second subset of the plurality of antennas is the null set for each value of the control signal.

Abstract: A communication system and method are described. In one embodiment, the method comprises a switch receiving information from at least one repeater for each packet received without errors by the at least one repeater, the switch, in response to the information, determining an amount of wireless communication activity each of the at least one repeater is experiencing, the switch determining whether to cause one or more repeaters to change status regarding wireless reception and transmission of packets from other devices in the network based on repeater location and repeater density and the information received from the at least one repeater, and the switch causing a change in the status for at least one of the one or more repeaters by signaling to the at least one of the one or more repeaters.

Abstract: A device includes an on-chip gyrating circuit that generates a motion parameter based on motion of the device. An RF transceiver generates an outbound RF signal from an outbound symbol stream, transmits the outbound RF signal to a remote station of a wireless network, and generates an inbound symbol stream from an inbound RF signal received from the at least one remote station. A processing module processes the motion parameter to produce motion data, converts outbound data into the outbound symbol stream, converts the inbound symbol stream into inbound data, compares current motion data to past motion data, detects when a difference between the current motion data and the past motion data compares unfavorably to a motion change threshold, and include the motion data in the outbound data when the difference between the current motion data and the past motion data compares unfavorably to the motion change threshold.

Abstract: Methods and systems for VCO impedance control to optimize performance, efficiency, and power consumption are disclosed and may include selectively coupling one of a plurality of taps on a multi-tap inductive load to a voltage controlled oscillator (VCO) on a chip comprising a plurality of transmitters and receivers. The multi-tap inductive load may comprise a multi-tap transformer or transmission line, which may be integrated on the chip, or may be integrated on a package to which the chip is coupled. A voltage swing at an output of the VCO and/or a current in the VCO may be adjusted by configuring a load of the VCO utilizing the multi-tap inductive load. The multi-tap inductive load may be coupled to the VCO utilizing one or more CMOS switches.

Abstract: A method for avoiding signal interference between a first RF device and a second RF device is provided. The first and second RF devices are co-located and the first RF device is configured to operate within a semi-stationary range of a frequency band. The second RF device is configured to operate by changing channels within the frequency band. The method initiates with a communication interface being provided between the first RF device and the second RF device. Then, the second RF device receives the semi-stationary range and a mode for the first RF device through the communication interface. Next, the second RF device is adapted to avoid the semi-stationary range of the frequency band of the first RF device when the mode of the first RF device is in an active mode. An apparatus where two RF devices are co-located without causing interference for each other is also provided.

Abstract: An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a GSM format and at least one non-GSM format.

Abstract: A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series with the transconductance stage between a battery voltage node and ground, the cascode stage having an RF signal output at the battery voltage node and at least one bias input to the at least one cascode transistor. Cascode bias feedback circuitry applies fixed bias voltage(s) to the at least one two bias inputs for a low battery voltage and applies feedback bias voltage(s) to the at least two bias inputs for a high battery voltage, the feedback bias voltage(s) based upon a voltage of the battery voltage node. More than two differing battery supply voltages are supported.

Abstract: Certain aspects of a method and system for transparent transmission control protocol (TCP) offload with transmit and receive coupling are disclosed. Aspects of a method may include collecting at least one received TCP segment for a determined network flow via a network interface card (NIC) processor. The state information for the received TCP segment and state information for transmitted TCP segments for the determined network flow may be stored at the NIC without transferring state information for the received TCP segment and the state information for the transmitted TCP segments to a host system communicatively coupled to the NIC. A new TCP segment comprising the collected TCP segments may be generated after a termination event occurs. The generated new TCP segment, new state information for the generated new TCP segment, and the state information for the transmitted TCP segments may be communicated to the host system for TCP offload.

Abstract: A radio frequency identification (RFID) system includes an RFID reader and an RFID tag. The RFID reader is coupled to transmit first electromagnetic signal via an off-chip winding section of a hybrid on-chip-off-chip transformer. The RFID tag is coupled to receive the first electromagnetic signal via an on-chip winding section of the hybrid on-chip-off-chip transformer, wherein the on-chip winding section derives a second electromagnetic signal from the first electromagnetic signal when the on-chip winding section is within a proximal coupling distance of the off-chip winding section.

Abstract: An IC includes a microphone interface, a speaker interface, a baseband processing module, and RF section, a processing module, an on-chip to off-chip connector structure, and a digital audio switching module coupled to: provide the inbound voice signal from the processing module to the handheld speaker interface when the IC is in a remote mode; provide the outbound voice signal from the handheld microphone interface to the processing module when the IC is in the remote mode; provide the inbound voice signal from the processing module to the on-chip to off-chip connector structure when the IC is in a docked mode; and provide the outbound voice signal from the on-chip to off-chip connector structure to the processing module when the IC is in the docked mode.

Abstract: Ethernet link partners within an Ethernet network, coupled via an Ethernet link comprising one or more channels may be configured to operate in simplex mode based on determined condition(s) during communications via the one or more channels. The determined condition(s) may comprise utilization or load, current/past conditions and/or link statistics that may comprise one or more of packet error rate (PER), bit error rate (BER), and/or signal to noise ratio (SNR). In addition, one or more of the channels may be transitioned to a lower power mode with a zero data rate. In some embodiments of the invention, one or more of a plurality of operational changes may occur during simplex mode operation. For example, power may lowered for one or more components that enable communication such as receivers, transmitters, near-end cross talk cancellers, far-end cross talk cancellers and/or echo cancellers.

Abstract: A method for encoding an image of a video stream divided into macroblocks comprising determining a maximum of variance of luma blocks in a macroblock, determining if the maximum of variance exceeds a predetermined threshold, determining if the motion vectors of the macroblock are in correlation with a reference macroblock, determining if the macroblock is not an edge macroblock and setting a first quantization level for the macroblock if it meets these conditions and setting a second quantization level for the macroblock if it does not meet these conditions, where the second quantization level is greater than the first quantization level.

Abstract: Reduced complexity ARP (almost regular permutation) interleaves providing flexible granularity and parallelism adaptable to any possible turbo code block size. A novel means is presented by which any desired turbo code block size can be employed when only requiring, in only some instances, a very small number of dummy bits. This approach also is directly adaptable to parallel turbo decoding, in which any desired degree of parallelism can be employed. Alternatively, as few as one turbo decoder can be employed in a fully non-parallel implementation as well. Also, this approach allows for storage of a reduced number of parameters to accommodate a wide variety of interleaves.

Abstract: A replacement pathway in an STB is utilized to determine loss of packets and delivery error during reception of media broadcasts, and to retrieve replacement data from one or more replacement media servers. The retrieval of the replacement data is performed during playback of the received media broadcasts. The communication of media broadcast incorporates delays to accommodate the retrieval of replacement data. Alternatively, received broadcast media streams are buffered to enable retrieval of replacement data and to provide seamless presentation of media content in the media broadcasts. The replacement media server performs access authentication operations during replacement data retrieval. The replacement media server is accessed via markup language, for example, HTML and/or XML, based interfaces and/or dedicated APIs.

Abstract: A method of accommodating aberrant behavior in wireless devices in a wireless network includes the steps of establishing communication with at least one wireless device, monitoring signals received from the at least one wireless device, determining characteristics of the at least one wireless device based on the monitored signals, comparing the determined characteristics with prescribed characteristics for wireless devices exhibiting aberrant behavior and altering settings to accommodate the at least one wireless device, when the determined characteristics match the prescribed characteristics.