Abstract: A system and method is described herein in which an audio source wirelessly transmits audio content to a first audio sink over one wireless link and to a second audio sink over another wireless link. The two audio sinks also exchange forward error correction (FEC) streams over a wireless link between the two audio sinks, wherein the FEC streams are generated by FEC encoding the audio content received from the audio source. The audio sinks advantageously use the exchanged FEC information to synchronize the playback of the audio content as well as to improve the robustness of the wireless links with the audio source in a manner that does not consume additional bandwidth on those links.

Abstract: A disclosed embodiment is a programmable memory cell comprising an elevated ground node having a voltage greater than a common ground node by an amount substantially equal to a voltage drop across a trigger point adjustment element. In one embodiment, the trigger point adjustment element can be a diode. The trigger voltage of the programmable memory cell is raised closer to a supply voltage when current passes through the trigger point adjustment element during a write operation. The programmable memory cell can comprise a pair of cross-coupled inverters, and first and second programmable antifuses that can be coupled to each inverter in the pair of cross-coupled inverters. Since the trigger voltage of the programmable memory cell is raised closer to the supply voltage, a programmed antifuse can easily reach below the trigger voltage and result in a successful write operation even when the supply voltage is a low voltage.

Abstract: A technique is described for concealing the effect of a lost frame in a series of frames representing an encoded audio signal in a sub-band predictive coding system. In accordance with the technique, a first synthesized sub-band audio signal is synthesized, wherein synthesizing the first synthesized sub-band audio signal comprises performing waveform extrapolation based on a stored first sub-band decoded audio signal. A second synthesized sub-band audio signal is also synthesized, wherein synthesizing the second synthesized sub-band audio signal comprises performing waveform extrapolation based on the stored second sub-band decoded audio signal. The first synthesized sub-band audio signal and the second synthesized sub-band audio signal are combined to generate a synthesized full-band output audio signal corresponding to a lost frame.

Abstract: An integrated circuit (IC) includes a plurality of circuit modules, a millimeter wave (MMW) transceiver, a controller. The controller is further operably coupled to: obtain potential inter-chip millimeter wave (MMW) communication links within a device; identify at least one of the inter-chip potential inter-chip MMW communication links as being a dedicated point-to-point MMW link; determine requirements to establish the dedicated point-to-point MMW link; and, when inter-chip MMW resources are available to support the requirements, allocate the inter-chip MMW resources to support the dedicated point-to-point MMW link.

Abstract: A method and system for improving a level of service between wireless devices. Handheld devices implementing the Bluetooth specification typically have relatively limited transmission ranges. As a result, and since they are typically portable, such devices easily experience abrupt communication interruptions, either between themselves and other handheld devices, or between themselves and fixed devices. The effective range of the devices can be extended by providing additional error-correcting coding. Although this modification also results in an extended transmission time, users are provided with an increased transmission range, and are given warning that service may soon be interrupted. Users may then, if they wish, take such steps as finishing their communication or moving into their devices' normal transmission range. Additionally, the handheld devices may use the extra transmission time and range to search for a forwarding path to a recipient device, thus minimizing or preventing any service interruption.

Abstract: An integrated circuit includes a millimeter wave transceiver and may include memory and processing resources, each with an associated millimeter wave transceiver. Intra-IC millimeter wave communication links, between resources on a given IC, enables IC-level resource sharing and Inter-IC millimeter wave communication links, between resources on different ICs, enables cross-IC-level resource sharing. A resource sharing method allocates IC resources to tasks based on task requirements, resource capabilities, and resource availability.

Abstract: A circuit for use in a wireless communication device includes a on-chip gyrating circuit that generates a motion parameter based on motion of the circuit. A GPS receiver receives a GPS signal and that generates GPS position data based on the GPS signal. A processing module processes the motion parameter to produce motion data and generates position information based on the GPS position data. A wireless telephone transceiver generates an outbound RF signal that includes outbound voice data and that generates voice inbound data from an inbound RF signal.

Abstract: A peripheral bus switch includes a virtual peripheral bus, a plurality of bridges, and a configurable host bridge. A first bridge operably couples on a first side to the virtual peripheral bus and supports connection on a second side to a peripheral bus fabric. A second bridge operably couples on a first side to the virtual peripheral bus and supports connection on a second side to the peripheral bus fabric. The configurable host bridge operably couples to the virtual peripheral bus, supports a host mode of operation in which it serves as a host bridge, and supports a device mode of operation in which it operates as a device.

Abstract: A method of handling packets includes inserting a stack-specific tag into a packet, then processing the packet in a stack of network switches in accordance with tag information in the stack-specific tag. The stack-specific tag is then removed from the packet.

Abstract: A method and system for decoding SACCH control channels in GSM-based systems with partial combining using weighted SNR may comprise combining least one weighted bit of a GSM slow associated control channel (SACCH) frame with at least one weighted bit of a subsequent GSM SACCH block based on burst signal to noise ratios (SNRs) of the GSM SACCH block and the subsequent GSM SACCH block. The burst SNR may be determined from a mid-amble of the GSM SACCH block and its subsequent GSM SACCH block. The burst SNRs of the GSM SACCH block may be translated to a corresponding plurality of scaling factors. At least a first weighting factor may be determined from the corresponding plurality of scaling factors. At least one weighted bit of the GSM SACCH block is determined utilizing the determined first weighting factor.

Abstract: Systems and methods that protect transport stream content are disclosed. The system may include a first module and a second module, the first module having a common interface. The second module is coupled to the first module via the common interface. In one embodiment, the first module is a set top box, and the second module is a conditional access card. In one example, the first module demodulates an incoming transport stream, copy protection encrypts the demodulated transport stream and passes the copy protection encrypted transport stream to the second module via the common interface. The second module copy protection decrypts the transport stream received from the first module, conditional access decrypts at least some of packets of the transport stream that were conditional access encrypted, copy protection encrypts the transport stream and passes the copy protection encrypted transport stream to the first module via the common interface.

Abstract: A single chip radio transceiver includes circuitry that enables detection of radar signals to enable the radio transceiver to halt communications in overlapping communication bands to avoid interference with the radar transmitting the radar pulses. One design goal, however, is to avoid false triggers that result from spurious tones and omissions and that further detects radar signals even in circumstances in which a radar pulse has been masked or eliminated by interference. Accordingly, the radar detection block includes circuitry for detecting and measuring the radar signals in the presence of such interference. More specifically, the radar detection block includes a moving average filter, a threshold comparison state machine, and radar detection logic within software that is executed by a processor for determining whether a radar signal is present.

Abstract: In wireless systems, a method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC communication signals transmitted from at least two transmit antennas. Estimates of the propagation channels between transmit and receive antennas may be performed concurrently and may be determined from baseband combined channel estimates. Channel weights may be determined to modify the signals received by the additional receive antennas. Pre-equalization weight parameters may be determined to modify subsequent signals transmitted from the transmit antennas. The pre-equalization weight parameters may be based on the propagation channel estimates and may be determined by LMS, RLS, DMI, or by minimizing a cost function. Closed loop transmit diversity may also be supported.

Abstract: A service aware flow control apparatus and method for multiple classes of data packets. A flow control sender includes a buffer of an ingress port per Class Group or Class of Service (COS). A counter per COS tracks an amount of buffer utilization per ingress port per COS, and each counter comprises an XOFF threshold level of congestion and an XON threshold. A controller detects, during transmission of the data packets, a counter associated with a buffer for a particular COS has risen to be greater than or equal to the XOFF threshold level of congestion. A flow control receiver ceases transmission of the data packets to the buffer for the particular COS experiencing congestion and allowing transmission of the data packets corresponding to other COS in the flow control sender.

Abstract: A table lookup indexing system for the transmission of data packets in a network switch. Data is received in an input port and is divided into two parts, an index portion and a bucket portion. The index portion selects a particular bucket and the combination of the index portion and bucket portion selects a specific entry in the table.

Abstract: A method of space-time and/or space-frequency block encoding begins by receiving at least two complex signals, wherein each of the at least two complex signals includes a real component and an imaginary component. The method continues, for each of the at least two complex signals, by generating a swapped complex signal, wherein each of at least two swapped complex signals includes a swapped real component and a swapped imaginary component, wherein the swapped real component corresponds to the imaginary component and wherein the swapped imaginary component corresponds to the real component. The method continues by encoding the at least two complex signals and the at least two swapped complex signals to produce space-time and/or space-frequency block encoded signals.

Abstract: A transceiver system is disclosed that includes a plurality of transceiver chips. Each transceiver chip includes one or more SERDES cores. Each SERDES core includes one or more SERDES lanes. Each SERDES lane includes a receive channel and a transmit channel. The transmit channel of each SERDES lane is phase-locked with a corresponding receive channel. The transceiver system has the capability of phase-locking a transmit clock signal phase of a transmitting component with a receive clock signal phase of a receiving component that is a part of a different SERDES lane, a different SERDES core, a different substrate, or even a different board. Each SERDES core receives and transmits data to and from external components connected to the SERDES core, such as hard disk drives. A method of transferring data from a first external component coupled to a receive channel to a second external component coupled to a transmit channel is also disclosed.

Abstract: A dual-use PLL frequency synthesizer for use in a transceiver is capable of operating as a local oscillation generator in a receiving mode and as a transmitter in a transmitting mode. The PLL frequency synthesizer includes a digital processor, a Digital-to-Analog Converter (DAC), a low pass filter and a phase locked loop. The digital processor generates a digital signal, in which the digital signal is a modulated digital signal in the transmitting mode, and the digital signal is a reference digital signal in the receiving mode. The DAC converts the digital signal to an analog signal, and the low pass filter filters the analog signal to produce a filtered analog signal. The phase locked loop up-converts the filtered analog signal to an RF signal. In the transmitting mode, the RF signal is a modulated RF signal, and in the receiving mode, the RF signal is a reference RF signal.

Abstract: Aspects for secure access and communication of information in a distributed media network may include detecting when a legacy media peripheral is connected to a PC and/or a media processing system on the distributed media network. One or more identifiers associated with the legacy media peripheral may be established and utilized to facilitate communication of the legacy media peripheral over the distributed media network. At least one legacy media peripheral identifier and at least one identifier of a user utilizing the legacy media peripheral may be requested. The legacy media peripheral identifier may be a serial number of the legacy media peripheral, while the user identifier may be a user password and/or a user name. Media peripheral association software may be executed on the PC and/or the media processing system and utilized for media peripheral association and authentication in accordance with various embodiments of the invention.

Abstract: In a high-fidelity digital modulator, a mapper is provided to minimize quantization noise, jitter, and cross-talk between multiple digital-to-analog or analog-to-digital converters. The mapper receives a quantized level from a quantizer and maps the quantized level to an output sequence. The mapper includes a table defining multiple sequences corresponding to each quantized level. Each sequence includes two or more symbols, having one of multiple values. The mapper also includes a generator that selects one of the multiple sequences as the output sequence. The last symbol of a first output sequence is equal to the first symbol of the next output sequence and so on. The generator selects the output sequence by alternating between a first and a second sequence for each quantized level received. The generator selects the output sequence by alternating between sequences having a positive and a negative common mode energy for each odd valued quantized level received.