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| Number | Title | Issue Date |
| 8185952 | Static and dynamic firewalls A system comprising control logic adapted to activate multiple security levels for the system. The system further comprises a storage coupled to the control logic and comprising a stack, the stack associated with one, but not all, of the multiple security levels. Th... | 05/22/2012 |
| 8185666 | Compare instruction A processor executes an instruction that causes a comparison to be performed between contents of a first register and contents of a second register and between the contents of the first register and a predetermined value. The instruction is particularly useful for d... | 05/22/2012 |
| 8183939 | Ring oscillator A ring oscillator has at least one latch connected to the outputs of at least one oscillator stage, where the latch drives the outputs of the oscillator stage to opposite states during startup, and drive strength reduction circuitry to reduce drive strength of the l... | 05/22/2012 |
| 8179812 | System and method for providing status reports of transmitted data packets in a data communications system A digital communications system for delivering data blocks includes at least one transmit/receive unit (TRU). The TRU includes a storage element for receiving transmit data packets and retransmit data packets from a sending unit and a processing element communicativ... | 05/15/2012 |
| 8179810 | Low-complexity primary synchronization sequences Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a in a cellular communication system and includes a scheduling unit co... | 05/15/2012 |
| 8179235 | Tactile interface for mobile devices A tactile input to a system having a speaker located in an enclosure with an audio port can be detected by generating a sound wave in response to a signal and sensing the phase relationship between the current phase and the voltage phase of the signal. While the aud... | 05/15/2012 |
| 8175375 | Method of compression of video telephony images A method of compression of videotelephony images characterized by: creating (10) a learning base containing images; centering the learning base about zero; determining component images by principal component analysis (12); and keeping a number of signi... | 05/08/2012 |
| 8175077 | Mapping schemes for secondary synchronization signal scrambling Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary s... | 05/08/2012 |
| 8174955 | Random access preamble coding for initiation of wireless mobile communications sessions A wireless communications network, including a base station (10) and wireless units (UE), is disclosed. The wireless units (UE) request a connection with the base station (10) by the transmission of a preamble within time slots designated by the base s... | 05/08/2012 |
| 8174611 | Digital image segmentation using flash A digital camera function, such as can be implemented in a cellular telephone handset, and that includes automated segmentation of foreground subjects in acquired digital photos and images. Successive images are captured by the digital camera function at different f... | 05/08/2012 |
| 8170507 | Predistortion methods and apparatus for transmitter linearization in a communication transceiver Predistortion methods and apparatus for transmitter linearization in a communication transceiver are disclosed. An example apparatus to linearize a digitally controlled pre-power amplifier included in a transmitter of a communication transceiver disclosed herein com... | 05/01/2012 |
| 8170087 | Correlation coprocessor Apparatus and method for providing correlation in a CDMA receiver. A Generic Correlation Coprocessor comprises one or more correlation blocks. Each correlation block comprises a correlation input buffer coupled to one or more correlators. The correlators are coupled... | 05/01/2012 |
| 8165260 | Loop bandwidth enhancement technique for a digital PLL and a HF divider that enables this technique A method of operating a phase locked loop (FIG. 5) for a wireless receiver is disclosed. The method includes receiving a reference signal (503) having a first and a second plurality of cycles and receiving a feedback signal (512) having the firs... | 04/24/2012 |
| 8156283 | Processing function connected to processor memory hierarchy Apparatus and method for employing a Hardware Processing Function in a processor system using a hierarchical memory. Embodiments of the disclosed invention may be used to enhance processor performance and functionality while maintaining cache coherency and reducing ... | 04/10/2012 |
| 8155256 | Method and apparatus for asynchronous clock retiming A time to digital converter is used to determine which edge of the higher frequency clock (oversampling clock) is farther away from the edge of the lower frequency timing signal. At the same time, the oversampling clock performs sampling of the timing signal by two ... | 04/10/2012 |
| 8155023 | MIMO with reserved subframes in primary and secondary base stations Embodiments of the invention provide a method to efficiently enable Network MIMO for use in the downlink direction. An association is established between a primary NodeB in a first cell and a secondary NodeB in an adjacent second cell. A set of downlink transmission... | 04/10/2012 |
| 8144747 | Primary and secondary synchronization codes from first, second, third sequences A wireless communication system. The system comprises transmitter circuitry (BST1), the transmitter circuitry comprising encoder circuitry (50) for transmitting a plurality of frames (FR). Each of the plurality of frames comprises a primary synchroniza... | 03/27/2012 |
| 8143955 | Oscillator circuit for radio frequency transceivers Oscillator circuit for radio frequency transceivers. An oscillator circuit includes a first oscillator that generates a signal having a first frequency and a second oscillator that generates a signal having a second frequency. The oscillator circuit includes a mixer... | 03/27/2012 |
| 8140031 | Transmitter built-in production line testing utilizing digital gain calibration A novel and useful self-calibration based production line testing mechanism utilizing built-in closed loop measurements in the radio to calibrate the output power of an external power amplifier coupled to a SoC radio. The mechanism is applicable during production li... | 03/20/2012 |
| 8139678 | High data rate closed loop MIMO scheme combining transmit diversity and data multiplexing Closed loop multiple-antenna wireless communications system with antenna weights determined by maximizing a composite channel signal-to-interference-plus-noise ratio minimum. Multiplexed symbol streams over subsets of antennas enhance throughout. ... | 03/20/2012 |
| 8135057 | Reconfigurable chip level equalizer architecture A reconfigurable chip level equalizer having circuitry that restores signal orthogonality and eliminates channel interference for a wireless transmitted signal. In at least some embodiments, the reconfigurable chip level equalizer comprises two or more adaptive equa... | 03/13/2012 |
| 8134996 | Downlink synchronization for a cellular OFDM communication system The present invention provides a method of operating a base station transmitter. In one embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion is common for all cells an... | 03/13/2012 |
| 8134411 | Computation spreading utilizing dithering for spur reduction in a digital phase lock loop A novel and useful apparatus for and method of spur reduction using computation spreading with dithering in a digital phase locked loop (DPLL) architecture. A software based PLL incorporates a reconfigurable calculation unit (RCU) that is optimized and programmed to... | 03/13/2012 |
| 8131232 | Method and apparatus for antenna tuning A method for tuning a transmitter in order to improve impedance matching to an antenna or to intermediate radio frequency stages uses an error detector that senses a deviation of the amplitude or phase angle of a load current of a power amplifier driver or of a powe... | 03/06/2012 |
| 8126401 | Transmitter PLL with bandwidth on demand An embodiment of the present invention provides transmitter having a phase locked loop that has a dynamically controllable loop bandwidth. A transmit modulator is coupled to the PLL for performing vector modulation in response to transmission symbols. Each transmiss... | 02/28/2012 |
| 8126092 | Multistage PN code acquisition circuit and method A circuit for detecting a serial signal comprises a first circuit coupled to receive the serial signal during a predetermined plurality of time periods of substantially equal duration. The first circuit is coupled to receive a first code. The first circuit is arrang... | 02/28/2012 |
| 8122244 | Secure management of configuration parameters in a computing platform A computing platform (10) protects system firmware (30) using a manufacturer certificate (36). The manufacturer certificate binds the system firmware (30) to the particular computing platform (10). The manufacturer certificate also... | 02/21/2012 |
| 8121576 | Linearity of an RF receive path by spurious tone suppression A method of increasing linearity of an RF signal receive path includes measuring a signal amplified by the receive path. The receive path has a local oscillator operating at an LO frequency and a ground. An error signal is determined from the amplified signal, the e... | 02/21/2012 |
| 8121561 | Power tuning system and method for power amplifier An automatic power tuning system and method, and a transmitter employing either the system or the method. In one embodiment, the system includes: (1) a power detector circuit coupled to an output of a transmitter, the transmitter having an integrator with a first, r... | 02/21/2012 |
| 8121214 | Local oscillator with non-harmonic ratio between oscillator and RF frequencies using XOR operation A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated ... | 02/21/2012 |
| 8120425 | System and method for common mode translation System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter... | 02/21/2012 |
| 8120417 | Transfer-function control in an active filter A filter circuit includes a differential amplifier circuit to provide a number of poles including a dominant pole, and a feedback circuit to feed a portion of an output of the differential amplifier circuit to an input of the differential amplifier circuit. The feed... | 02/21/2012 |
| 8112050 | Reducing power consumption in receivers employing conversion to intermediate frequency A receiver to recover a signal of interest while consuming reduced power in some scenarios. The receiver contains a in-phase channel processing path and a quadrature phase channeling path for down converting an input signal to an intermediate frequency, and then rec... | 02/07/2012 |
| 8107570 | Space time block coded transmit antenna diversity for WCDMA A mobile communication system is designed with an input circuit coupled to receive a first plurality of signals (rj(i+τj), i=0−N−1) during a first time (T0-T1) from an external source and coupled to receive a second plurality... | 01/31/2012 |
| 8107420 | Wireless communications system with cycling of unique cell bit sequences in station communications A wireless communication system (10). The system comprises transmitter circuitry (BST1) comprising circuitry for transmitting a plurality of frames to a receiver in a first cell (Cell 1). Each of the plurality of frames comprises a bit group ( | 01/31/2012 |
| 8098745 | Random access structure for wireless networks Apparatus and methods for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shift ... | 01/17/2012 |
| 8085074 | Fast-locking delay locked loop A fast locking delay-locked loop (DLL), which can also operate as a clock data recovery circuit (CDR), includes a delay chain, a sampling circuit and a transition detector. An input signal and delayed versions of the input signal generated by the delay chain are sam... | 12/27/2011 |
| 8060019 | Asymmetric ESD protection for FM transmitter Various apparatuses and methods for protecting a transmitter from electrostatic discharge are disclosed herein. For example, some embodiments provide an apparatus including a first ESD clamp connected to an antenna input, a first reactive component connected to the ... | 11/15/2011 |
| 8059917 | 3-D modeling A system comprising an imaging device adapted to capture images of a target object at multiple angles. The system also comprises storage coupled to the imaging device and adapted to store a generic model of the target object. The system further comprises processing ... | 11/15/2011 |
| 8059735 | Allocation of block spreading sequences A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using a first and a second sequence. Embodiments of the present ... | 11/15/2011 |
