"The radio craze will die out in time."
Thomas Edison ; 1922
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| Number | Title | Issue Date |
| 8136732 | Electronic transaction card with contactless interface An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 03/20/2012 |
| 8091786 | Add-on card with smartcard circuitry powered by a mobile device An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 01/10/2012 |
| 8083145 | Provisioning an add-on apparatus with smartcard circuity for enabling transactions An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 12/27/2011 |
| 8072331 | Mobile payment device A memory card compatible RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in th... | 12/06/2011 |
| 7991158 | Secure messaging Secure authentication and messaging for mobile online transactions are performed by a secure messaging platform. The secure messaging platform may include a token coupled to a mobile device, or a mobile device alone. The token enables secure access, and client and s... | 08/02/2011 |
| 7974146 | Wordline temperature compensation A nonvolatile memory includes a temperature dependent read window. One or more temperature compensated wordline voltage supply circuits provide temperature compensated wordline signal(s) to the nonvolatile memory. The temperature compensated wordline signals change ... | 07/05/2011 |
| 7961101 | Small RFID card with integrated inductive element A memory card compatible RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in th... | 06/14/2011 |
| 7954717 | Provisioning electronic transaction card in mobile device An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 06/07/2011 |
| 7954716 | Electronic transaction card powered by mobile device An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 06/07/2011 |
| 7954715 | Mobile device with transaction card in add-on slot An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 06/07/2011 |
| 7948821 | Reduced signal interface memory device, system, and method A memory has a serial interface. The serial interface is programmable to either use separate dedicated input and output pads, or to use one bidirectional pad. When one bidirectional pad is used, the interface signal count is reduced by one. ... | 05/24/2011 |
| 7828214 | Mobile phone with electronic transaction card An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 11/09/2010 |
| 7805615 | Asymmetric cryptography with user authentication A device uses a user authentication factor to generate a decryption key for use in asymmetric cryptography. An encryption key is generated from the decryption key using a one-way function. ... | 09/28/2010 |
| 7757020 | Point-to-point link negotiation method and apparatus Point-to-point links between devices are brought up at a slowest available speed, and a faster link speed is negotiated after reaching an operational state. ... | 07/13/2010 |
| 7737894 | CMOS IC and high-gain antenna integration for point-to-point wireless communication A point-to-point radio communications device, with an integrated antenna-IC module, includes highly-directional antenna elements and silicon CMOS-based ICs in plastic packaging material. The high-gain horn-type antenna includes two sections made of molded plastic an... | 06/15/2010 |
| 7719993 | Downlink transmit beamforming A wireless network access point can operate as a closed loop MIMO device when communicating with a station that is operating as an open loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity. ... | 05/18/2010 |
| 7711939 | Serial link apparatus, method, and system A source terminated serial link can recover from a low power mode by turning on multiple current-mode drivers in a phased sequence where the phased sequence is related to a resonant characteristic of a power supply net. ... | 05/04/2010 |
| 7710925 | Spatial puncturing apparatus, method, and system Stations in an N×N multiple-input-multiple-output (MIMO) wireless network always puncture the weakest spatial channel. A receiving station determines channel state information for N spatial channels and feeds back to the transmitting station channel state informati... | 05/04/2010 |
| 7706399 | Polling in wireless networks Access points in wireless networks provide contention free access to stations through polling. Polling frames are transmitted to stations at polling intervals. Stations may transmit polling alignment requests to the access point to request a modification of the poll... | 04/27/2010 |
| 7684529 | Interference rejection in wireless networks The effects of interference are mitigated in a wireless system by estimating spatial characteristics of an interfering signal, and using those characteristics in the formation of a spatial equalizer. ... | 03/23/2010 |
| 7676197 | Signal spectrum steering method, apparatus, and system A computing platform includes a wireless interface and other devices that may cause interference to the wireless interface. The other devices may change frequencies of operation or data rates to steer signal spectrum away from current wireless channels and reduce in... | 03/09/2010 |
| 7672178 | Dynamic adaptive read return of DRAM data An integrated circuit communicates with memory devices. Data from the memory devices arrives at the integrated circuit with varying propagation delays. The integrated circuit detects the arrival of data from the memory devices, and stores the data in FIFOs. A FIFO d... | 03/02/2010 |
| 7653035 | Interference rejection in wireless receivers The effects of interference are mitigated in a wireless system through update noise variance estimates. Noise variance estimates may be update after the reception of a preamble in an OFDM receiver. Noise variance estimates may include averages of signal energy over ... | 01/26/2010 |
| 7630697 | Local oscillator control in radio receivers A radio receiver measures a signal quality metric and modifies attributes of a local oscillator signal in response thereto. A digital signal processor may be used to determine a signal-to-noise-plus-distortion ratio (SNDR) of a baseband signal, and the overlap of tw... | 12/08/2009 |
| 7627713 | Method and apparatus to maintain data integrity in disk cache memory during and after periods of cache inaccessibility A volatile or nonvolatile cache memory can cache mass storage device read data and write data. The cache memory may become inaccessible, and I/O operations may go directly to the mass storage device, bypassing the cache memory. A log of write operations may be maint... | 12/01/2009 |
| 7620119 | Communications receiver with digital counter A communications receiver includes a digital counter to count transitions of a carrier signal subject to on/off keying. ... | 11/17/2009 |
| 7590101 | Remote operations using wireless personal area network A computer includes a wireless personal area network (WPAN) interface, a wireless local area network (WLAN) interface and a wireless wide area network (WWAN) interface. A device communicating with the wireless personal area network can command the computer to perfor... | 09/15/2009 |
| 7581678 | Electronic transaction card An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electron... | 09/01/2009 |
| 7576621 | Film bulk acoustic resonator calibration Film bulk acoustic resonators (FBARS) have resonant frequencies that vary with manufacturing variations, but tend to be matched when in proximity on an integrated circuit die. FBAR resonant frequency is determined using a fractional-N synthesizer and comparing phase... | 08/18/2009 |
| 7562278 | Incremental forward error correction redundancy A data frame includes multiple data blocks that are block encoded in a forward error correction (FEC) scheme. When received data blocks are corrupted, encoded versions of the data blocks are stored, and retransmission of the corrupted data blocks is requested. Upon ... | 07/14/2009 |
| 7551489 | Multi-level memory cell sensing A multi-level cell memory device performs a read by providing a stepped voltage waveform on a wordline, and comparing cell currents to a substantially constant reference current. Prior to the application of the stepped voltage waveform, the wordline may share charge... | 06/23/2009 |
| 7542723 | Direct link establishment in wireless networks A wireless station utilizes available metrics to determine whether to request a direct link with another wireless station. ... | 06/02/2009 |
| 7541867 | Polar amplifier An amplifier circuit receives a phase modulated signal at an input node. The power supply terminal of the amplifier circuit is modulated in accordance with an amplitude envelope signal. The voltage on the power supply terminal is modulated using one or more linear r... | 06/02/2009 |
| 7539253 | Interpolation in channel state feedback Feedback bandwidth may be reduced in a closed loop MIMO system by Householder transformations, vector quantization using codebooks, and down-sampling in the frequency domain. A column of a beamforming matrix is quantized using a codebook, a Householder reflection is... | 05/26/2009 |
| 7532515 | Voltage reference generator using big flash cell A voltage reference generator includes multiple closed loop voltage references. Each of the closed loop voltage references uses a flash cell with a variable threshold voltage and a feedback loop to trim a reference voltage. The voltage reference generator includes s... | 05/12/2009 |
| 7519344 | Bandpass amplifier, method, and system An amplifier has a band pass response. The band pass response may be set by setting corner frequencies of low pass filters. ... | 04/14/2009 |
| 7492222 | Compound automatic gain control A compound automatic gain control (AGC) circuit includes multiple AGC stages coupled with signal input nodes and signal output nodes in parallel. Each of the AGC stages has separate, individually controllable, control inputs. During gain back off, the AGC stages are... | 02/17/2009 |
| 7492829 | Closed loop feedback in MIMO systems Feedback bandwidth may be reduced in a closed loop MIMO system by factoring non essential information out of a beamforming matrix. ... | 02/17/2009 |
| 7475381 | Shallow trench avoidance in integrated circuits Diffusion regions in a standard cell design are bridged across cell boundaries. Shallow trench isolation is reduced and nitride passivation thickness variation is reduced. ... | 01/06/2009 |
| 7463093 | Variable gain amplifier A variable gain amplifier includes multiple gain stages. Each gain stage includes a gain transistor and a cascode transistor to form a cascode amplifier, and a current diversion transistor to divert current away from a cascode transistor to reduce gain in the stage.... | 12/09/2008 |