Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8185061 | Wireless terminal with frequency switching circuits for controlling an operating frequency A wireless terminal includes an antenna which comprises an antenna element and at least one frequency switching circuit to control an operating frequency of the antenna element in accordance with a frequency control signal, a plurality of RF circuits to perform an R... | 05/22/2012 |
| 8155599 | Wireless communication apparatus for simultaneously performing multiple wireless communications A portable wireless communication apparatus is provided with antenna elements; a mobile phone signal processing circuit; a DTV tuner for receiving DTV low-band frequency signals and DTV high-band frequency signals; impedance matching circuits for the mobile phone si... | 04/10/2012 |
| 8027645 | Systems and methods for automatically tuning a frequency modulator in a mobile device A method for automatically tuning a frequency modulator in a mobile device is described. A frequency band is automatically scanned using a frequency modulation (FM) receiver. The FM receiver is integrated as a part of the mobile device. Quality associated with chann... | 09/27/2011 |
| 7974585 | Method for performing a frequency correction of a wireless device A method of performing a frequency correction of a radio module. Multiple samples of frequency data during a quiescent portion of the base station transmission is taken to estimate the amount of frequency correction needed. An embodiment applies the frequency data t... | 07/05/2011 |
| 7941102 | Partitioned radio-frequency apparatus and associated methods Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and th... | 05/10/2011 |
| 7937045 | Softmultiband radio for ultra wide band An ultra wide band device may announce a first idle message on a first ultra wide band sub-band associated with a first beacon group, announce a second idle message on a second ultra wide band sub-band associated with a second beacon group, and switch between the fi... | 05/03/2011 |
| 7885612 | Clock generation circuit and semiconductor device provided therewith It is an object of the present invention to solve a problem that malfunction of communication is generated by varying a frequency of a clock due to noise from outside in a case where there is no supplied signal in a circuit which performs negative feedback control s... | 02/08/2011 |
| 7881676 | Radio-frequency communication control system, radio-frequency communication control method and computer-readable storage medium An RF communication control system for executing the process of transmitting and receiving an RF signal through an RF control circuit unit and digitally processing the data contained in the RF signal through a baseband circuit unit, is disclosed. The baseband circui... | 02/01/2011 |
| 7848710 | Radio having adjustable resonant circuits A radio circuit includes a mixing module, a first adjustable resonant circuit and a second adjustable resonant circuit. The mixing module is coupled to mix a first signal having a first carrier frequency with a second signal having a second carrier frequency to prod... | 12/07/2010 |
| 7840189 | Frequency generation in a wireless communication unit A wireless communication device comprises a frequency generation circuit employing a crystal oscillator operably coupled to a fractional-based synthesiser and a voltage-controlled oscillator. The fractional-based synthesiser utilises a ratio between an integer value... | 11/23/2010 |
| 7796956 | Receiver for a multi-antenna, multi-band radio A front-end architecture and processing method for a receiver in a multi-antenna, multi-band radio. Band-dependent components for multiple frequency bands are not duplicated in each receive chain. In one embodiment, a first receive chain includes band-dependent comp... | 09/14/2010 |
| 7792496 | Transmitter receiver unit and electronic apparatus using same A transmitter receiver unit of the present invention comprises a phase shifter connected between a transistor and a filter multiplexer for decreasing a reactance component of an impedance, as observed from the transistor toward the filter multiplexer, to a value clo... | 09/07/2010 |
| 7769352 | Receiver and wireless communication apparatus A receiver has a first voltage control oscillator configured to generate a first oscillation signal, a second voltage control oscillator configured to generate a second oscillation signal having a first phase, a first phase comparator configured to detect a phase di... | 08/03/2010 |
| 7706754 | Methods and apparatuses for measuring frequencies of basestations in cellular networks using mobile GPS receivers Methods and apparatuses for frequency synchronizing basestations in a cellular communication system. In one aspect of the invention, a method to predict a timing of transmission of a basestation in a cellular communication system includes: receiving a first time tag... | 04/27/2010 |
| 7580684 | Programmable radio transceiver A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple ra... | 08/25/2009 |
| 7436903 | Multicarrier transmitter and method for transmitting multiple data streams with cyclic delay diversity A multicarrier transmitter may transmit cyclically delayed linear combinations of two or more data streams with three or more antennas. In some embodiments, the multicarrier transmitter may transmit cyclically delayed linear combinations of three data streams with f... | 10/14/2008 |
| 7430396 | Encoding low density parity check (LDPC) codes through an LDPC decoder An approach is providing for supporting broadcast transmission of low density parity check (LDPC) coded signals. A receiver includes a decoder configured to decode an LDPC signal to output a decoded signal. The decoder is further configured to operate as an encoder;... | 09/30/2008 |
| 7406297 | Clock generation circuit and semiconductor device provided therewith It is an object of the present invention to solve a problem that malfunction of communication is generated by varying a frequency of a clock due to noise from outside in a case where there is no supplied signal in a circuit which performs negative feedback control s... | 07/29/2008 |
| 7403122 | RFID tag circuits operable at different speeds Embodiments of RFID tag circuits and methods are described, which include a chip having a clock circuit operable to generate a clock signal having different frequencies, and one or more components operable to work at the different frequencies. In addition to a regul... | 07/22/2008 |
| 7373113 | Frequency generation apparatus and method for data transmission A reference frequency generation method and apparatus for communication systems that transmit and receive data by use of an ultra wide band of at least two frequency groups having at least two reference frequencies. The method and apparatus generate the reference fr... | 05/13/2008 |
| 7369816 | Highly accurate temperature sensor employing mixed-signal components A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 05/06/2008 |
| 7366478 | Partitioned radio-frequency apparatus and associated methods Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and th... | 04/29/2008 |
| 7340280 | Method of configuring base station, and base station A base station and a method of configuring a base station are provided in a cellular telecommunication system, wherein the base station comprises an electrically tunable duplex filter with a tuning range covering at least two parallel sub-bands used in the telecommu... | 03/04/2008 |
| 7333423 | Transceiver with calibrated I and Q paths and methods for deconvolved calibration Phase and amplitude offsets of a multicarrier transceiver may be reduced by measuring receiver amplitude and phase mismatches of receiver radio-frequency (RF) circuitry by performing a fast Fourier transform (FFT) on a receiver calibration signal. ... | 02/19/2008 |
| 7333608 | Analog scrambler An analog signal scrambler/de-scrambler includes a receiver for receiving an analog signal and converting the signal into an intermediate frequency signal. A generator generates a pseudo-random gaussian frequency distribution signal, which is multiplied with the int... | 02/19/2008 |
| 7324559 | Centralized synchronization for wireless networks This invention synchronizes the sample clocks of an entire wireless network from a single central base station. Unlike a conventional digital radio network where every terminal must have a synchronization circuit in its receiver to adjust the sample clock, each of t... | 01/29/2008 |
| 7302236 | Radio communication method and system for performing communication among a plurality of radio communication terminals A reference local oscillation signal transmission station 1 radiates a reference local oscillation signal to a service zone. A portion of the signal received by each radio slave station terminal 2 is branched and fed to an injection locked oscillator | 11/27/2007 |
| 7302013 | Multi-mode variable rate digital satellite receiver Digital signal processing for television signals includes digital feedback loops. Analog information signals are oversampled to provide digital signals. The digital signals are introduced to a digital carrier recovery loop and a digital symbol recovery loop. The gai... | 11/27/2007 |
| 7288972 | Circuitry for synthesizing an arbitrary clock signal and methods for the synthesis thereof Circuitry for synthesizing an arbitrary clock signal with minimal jitter is provided. The circuitry of this invention selectively multiplexes a sequence of two different byte patterns into a serializer, which serializes the sequence and transmits it to receiver circ... | 10/30/2007 |
| 7283840 | Reconfigurable analog baseband for a single-chip dual-mode transceiver A dual-mode analog baseband circuit is implementable on a single IC with reduced chip area. The baseband portion of the IC includes a single dual-mode complex filter that is reconfigurable to be a filter for Bluetooth signals or for wireless local area network (wire... | 10/16/2007 |
| 7280805 | LO leakage and sideband image calibration system and method A system or method for calibrating an RF transmitter includes inputting a test tone to the RF transmitter. LO leakage calibration is performed on an output of the RF transmitter with the test tone inputted thereto, in order to determine a minimum LO leakage. Thereaf... | 10/09/2007 |
| 7280807 | Initiator device capable of two-way half-duplex communication with multiple recipient devices An initiator transceiver for operating in a two-way half-duplex communication mode with multiple recipient transceivers. The transceivers includes a body having a cavity and a control device, positioned within the cavity, for receiving a recipient identification cod... | 10/09/2007 |
| 7277727 | System and method for processing a signal A system and method for receiving a communication signal includes a timing source that generates a stable timing signal and a stabilized local oscillator that receives the stable timing signal and uses the stable timing signal as an input to generate a stabilized os... | 10/02/2007 |
| 7272369 | Method for performing a frequency correction of a wireless device Frequency correction of a radio module. An estimate is made of the amount of frequency correction needed while applying an original reference frequency. If the frequency correction needed is greater than a pre-determined amount, a large shift frequency correction is... | 09/18/2007 |
| 7266093 | Method and arrangement for automatic frequency correction A method and arrangement for automatic frequency correction in UTRA TDD mode, having a first stage (500) for frequency lock in idle mode, and a second stage (600) for receiving a channel estimate from beacon function (mx1), receiving a chann... | 09/04/2007 |
| 7251300 | Method and apparatus for frequency tracking based on recovered data A method of frequency tracking based on recovered data, for use in an automatic frequency control subsystem at the receiver of a mobile station, is disclosed. The frequency tracking mechanism derives frequency error information from the recovered data to determine t... | 07/31/2007 |
| 7248664 | Timesliced discrete-time phase locked loop A time-sliced discrete-time Phase Locked Loop which is suitable for simultaneously synchronizing multiple input signals to multiple output signals is provided by implementing a discrete-time phase detector, loop filter, and voltage controlled oscillator that togethe... | 07/24/2007 |
| 7242910 | Self-calibrating radio A self-calibrating radio is described. In one exemplary implementation, a radio signal from its local voltage controlled oscillator. The calibration system automatically calibrates the radio by: (i) receiving a reference signal having a calibrated reference frequenc... | 07/10/2007 |
| 7236212 | System and method for providing a low power receiver design An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 06/26/2007 |
| 7236806 | Baseband card architecture for a base transceiver station A baseband card for a base transceiver station of a cellular communications network includes a receive unit containing at least one receive module for receiving an uplink data from an RF signal processing unit and a first interface for sending and receiving data. Th... | 06/26/2007 |
