Patents Examined by Thuan T. Nguyen
  • Patent number: 6771946
    Abstract: The present invention provides a method for preventing a driver of a motor vehicle from using a cellular telephone while the motor vehicle is in motion. The invention comprises a step of determining a position of the gear shift lever in such motor vehicle and generating a first signal when the position of such gear shift lever is moved to and remains in one of drive, overdrive, second, low, and reverse. Another step involves transmitting such signal generated in a previous step to a means disposed in a predetermined location on such motor vehicle for generating a reverse phase signal. Another step involves generating such reverse phase signal when such first signal is received by such means. A next step is transmitting such reverse phase signal for a predetermined radius from such predetermined location. A last step is preventing any cellular telephone transmission within such predetermined radius when such reversed phase frequency signal is being transmitted.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: August 3, 2004
    Inventor: Michael F. Oyaski
  • Patent number: 6748201
    Abstract: Systems and techniques for gain control include amplifying a signal with an amplifier having a gain represented by one of a plurality of gain curves depending on a value of a parameter, the signal being amplified at a first one of the parameter values, and controlling the gain of the amplified signal from a predetermined gain curve relating to the gain curve of the amplifier for a second one of the parameter values by adjusting a gain control signal corresponding to a point on the predetermined gain curve as a function of the first one of the parameter values, and applying the adjusted gain control signal to the amplifier. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: June 8, 2004
    Assignee: Qualcomm Inc.
    Inventors: Peter J. Black, Nagabhushana Sindhushayana, Raghu Challa, Kevin Seltmann
  • Patent number: 6741842
    Abstract: A frequency management scheme for a hybrid cellular/GPS or other device generates a local clock signal for the communications portion of the device, using a crystal oscillator or other part. The oscillator output may be corrected by way of an automatic frequency control (AFC) circuit or software, to drive the frequency of that clock signal to a higher accuracy. Besides being delivered to the cellular or other communications portion of the hybrid device, the compensated clock signal may also be delivered to a comparator to measure the offset between the cellular oscillator and the GPS oscillator. The error in the cellular oscillator may be measured from the AFC operation in the cellular portion of the device. An undershoot or overshoot in the delta between the two oscillators may thus be deduced to be due to bias in the GPS oscillator, whose value may then be determined.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 25, 2004
    Assignee: Motorola, Inc.
    Inventors: Mark A. Goldberg, Jose Korneluk, Atif Meraj, Anil Patel, Kristi Annette Haverkamp
  • Patent number: 6741855
    Abstract: One embodiment of the invention provides a method and apparatus for remotely managing data in a network system comprising at least one mobile device (e.g. a PDA, cellular phone, two-way pager, or mobile computer) and a least one server computer connected via an interconnection fabric, wherein the mobile device is registered with the server and configured to issue commands to a bot service using electronic mail messages or some other viable data transmission mechanism. The bot service responds to the commands by interfacing with the server computer to perform the requested action on behalf of the mobile device.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: May 25, 2004
    Assignee: Sun Microsystems, Inc.
    Inventors: Guy W. Martin, Owen M. Densmore
  • Patent number: 6738610
    Abstract: The noise in a frequency demodulated audio signal is detected on the basis of the characteristics of the stereo-multiplex signal to obtain a very reliable information that can be used for the sliding stereo-mono transition, noise blanking and a de-noising of the stereo difference signal. A noise (vd,q(t)) is calculated by performing a coherent amplitude demodulation of the frequency demodulated stereo-multiplex signal with the second harmonic of the pilot carrier that is quadrature to the pilot carrier and as a direct measure for the quality of the signal generating the variance (&sgr;2vd,q) of the noise signal by squaring and thereafter averaging the noise signal.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: May 18, 2004
    Assignee: Sony International (Europe) GmbH
    Inventor: Jens Wildhagen
  • Patent number: 6728525
    Abstract: A system and method is provided for generating a second LO signal to a second mixer of a plurality of receivers employed in a multimode communication device. A single PLO and VCO provides a high frequency second LO signal that is divided by divider components to provide a number of lower frequency second LO signals. The different high frequency second LO signal and the number of lower frequency second LO signals may be utilized for providing second LO signals for component employed in receiving communications from radio devices employing different communication standards and/or frequency ranges.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: April 27, 2004
    Assignee: Motorola, Inc.
    Inventors: Gustavo V. Leizerovich, Peter J. Yeh
  • Patent number: 6728556
    Abstract: A device for the attachment of mobile phones or like apparatus such that the mobile phone is held securely using a lug fastener or the like which is received in a receptacle. The attachment device consists of a one of the following; a pendant device, an armband device; a laptop cradle device; a vent clip device; the device including a body having a front side with the receptacle to receive the lug fastener. The receptacle has on opening sized to receive the full diameter of a protruding flange of the lug fastener, and a holding portion having a slot in the front side, the protruding flange being captured behind the front side with the stem of the lug fastener extending through a slot when in the held position.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: April 27, 2004
    Assignee: Amtel Technology PTY LTD
    Inventor: Kevin James Whitley
  • Patent number: 6725068
    Abstract: A wireless telephone system comprises a mobile station having its reception portion turned on in timed relationship with paging channels contained in a sending signal having been issued from a telephone exchange to the mobile station through a base station, and has the reception portion de-energized in the remaining period of time, so that the intermittent standby reception operation is performed. The exchange sends a paging message in both an intermittent superframe reception group and a paging channel group, for which groups the mobile station is waiting. The unit receives broadcast information, specifies the intermittent superframe reception group on the basis of the contents of intermittent standby information contained in the broadcast information, and performs its intermittent standby reception operation in the reception group having been thus specified.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: April 20, 2004
    Assignee: Tokyo Digital Phone Co., Ltd.
    Inventors: Kazuhisa Higuchi, Hideki Kamataki
  • Patent number: 6718166
    Abstract: A multiple carrier adaptive notch filter (ANF) module selectively filters a received wideband communication signal to eliminate narrowband interference that lies within the frequency spectrum of the wideband communication signal. To determine the presence of narrowband interference, the multiple carrier ANF module scans various known narrowband channels that lie within the frequency spectrum of the wideband communication signal and determines signal strengths for each of the narrowband channels. The signal strengths from the narrowband channels are compared to a threshold that is derived from a statistical combination of the narrowband signal strengths. Narrowband channels having signal strengths that are greater than the threshold are determined to have interference.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: April 6, 2004
    Assignee: Illinois Superconductor Corporation, Inc.
    Inventors: Sean S. Cordone, Tan D. Nguyen
  • Patent number: 6714792
    Abstract: To provide a selective radio paging receiver which can receive timely and efficiently even under heavy traffic the service information which can include a vast amount of data. The selective radio paging receiver of the present invention comprises a receiving unit for receiving a selective radio paging signal, a user operation unit for accepting operations by a user, an analyzing unit for analyzing the received signal, a memory for storing temporarily the information which was divided at the time of transmission, an assembling unit for assembling the divided information, a man-machine interface for analyzing the operation information, and a display unit for displaying the output of the man-machine interface.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: March 30, 2004
    Assignee: NEC Corporation
    Inventor: Makoto Oota
  • Patent number: 6714763
    Abstract: A sensing device includes a Wheatstone bridge and a source of a stimulation configured to apply the stimulation across two electrodes of the Wheatstone bridge. The device also includes a timing sensitive circuit configured to detect timing of a signal appearing across one of the other electrodes of the bridge as a result of the stimulation being applied. The timing provides a way to read the sensor. The device can be powered remotely and data so read can be transmitted using the remote power. The timing sensitive circuit includes a comparator. The comparator provides a high logic signal for a time related to the reactance of one leg of the Wheatstone bridge, and that provides a reading of a differential sensor having elements in each leg of the bridge.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: March 30, 2004
    Assignee: Microstrain, Inc
    Inventors: Michael John Hamel, Christopher P. Townsend, Steven W. Arms
  • Patent number: 6711420
    Abstract: A method of creating a path list for use in finger assignments comprising clearing a list of paths (12), choosing a sector for consideration from an active set of sectors (14), establishing a searcher window around the sector for cosideration (16), and determining up to “n” local maxima stronger than a threshold value (18). If a sector under consideration is transmitting on supplemental channels(19), the method involves artificially biasing the findings of the searcher window by a predetermined value (20). The biasing value may be constant, variable or proportional to the number of supplemental channels on the base station. After the local maxima corresponding to base stations transmitting on supplemental channels have been biased (20), the path lists are created (21).
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: March 23, 2004
    Assignee: Qualcomm, Incorporated
    Inventors: Messay Amerga, Serguei A. Glazko, Baaziz Achour
  • Patent number: 6675016
    Abstract: The invention concerns a method wherein a radio link control stage processes separately first data units containing information items of a specific type and second data units not containing information items of said type. A control stage for access to the media delivers the first data units through a first dedicated transport channel and the second data units through a second dedicated transport channel. The data units delivered through said dedicated transport channels are supplied to an encoding and multiplexing stage to form at least a train of symbols relative to a dedicated physical channel and supplied to a radio transmission stage. The encoding and multiplexing stage and/or the radio transmission stage ensure greater protection against noise through the first dedicated transport channel than through the second dedicated transport channel.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: January 6, 2004
    Assignee: Nortel Networks Limited
    Inventors: Thierry Lucidarme, Pierre Lescuyer
  • Patent number: 6662025
    Abstract: A mobile phone with adaptive interface is disclosed. The frequency distribution table stores frequency occurrences of each character in messages entered into or received by the mobile phone. When entering text messages, a controller displays the character of the character group on a display in an order based on the frequency distribution stored in the frequency distribution table, whenever input means is operated.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: December 9, 2003
    Assignee: NEC Corporation
    Inventors: Jeffrey Bond, Steven J. F. Grove
  • Patent number: 6658243
    Abstract: A high frequency power amplifying apparatus is provided with an amplifying section with a plurality of amplifying stages connected in cascade. A power control signal is supplied to the amplifying section through a control terminal so as to control the output of the high frequency power amplifying apparatus. Each of the amplifying stages has a gain smaller than that of a preceding stage. Gain control signals generated from the power control signal are supplied to the respective amplifying stages. Dividing resistors are connected in series with one another between the control terminal and a reference potential so as to divide the voltage of the power control signal to thereby generate a plurality of different gain control signals. Different ones of the gain control signals are supplied to the respective amplifying stages, an absolute value of a voltage of the gain control signal applied to each stage is smaller than that applied to an earlier preceding stage.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: December 2, 2003
    Assignees: Hitachi, Ltd., Hitachi Tohbu Semiconductor, Ltd.
    Inventors: Hitoshi Akamine, Nobuhiko Ishihara, Tetsuaki Adachi, Yasuhiro Nunogawa, Kogi Sugita
  • Patent number: 6654617
    Abstract: There is disclosed an improved base station for communicating with communication units in a wireless messaging system. According to an advantageous embodiment, the base station comprises: 1) a transmitter that is capable of transmitting messages to the communication units in a forward-channel having a first frequency range; 2) a receiver that is capable of receiving messages from the communication units in a reverse-channel having a second frequency range; and 3) an antenna that is capable of transmitting the forward-channel messages at a first angle of electrical downtilt below the horizon and receiving the reverse-channel messages at a second angle of electrical downtilt, wherein the second angle of electrical downtilt is less than the first angle of electrical downtilt.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 25, 2003
    Assignee: WebLink Wireless, Inc.
    Inventors: Allan D. Angus, Graham K. Jones, Selwyn Hill
  • Patent number: 6650884
    Abstract: A combined marine entertainment system and depth sounder (10) that more efficiently utilizes limited marine instrument panel space, that is more convenient and simple to operate, and that shares certain components and, therefore, is less expensive to manufacture and install. The apparatus includes a main unit (12) and a separate remote unit (14). The main unit includes a housing (16); an entertainment assembly including a display (20) and an entertainment component (18) positioned in the housing; and a depth sounder assembly including a depth display (48) positioned within the same housing as the entertainment assembly display and entertainment component.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: November 18, 2003
    Assignee: Garmin Corporation
    Inventors: Michael Richard Wiegers, Brian Poindexter
  • Patent number: 6647252
    Abstract: The present invention is a method and system for extracting information from a received signal with minimal loss due to noise. The system comprises of a transformer, for correlating the received signal to a wavelet function and producing wavelet decomposition coefficients, and a threshold circuit, which is responsive to the received signal, for applying predetermined threshold values based on the type of signal. Also included in the system is a filter, coupled to the transformer and threshold circuit, for altering the wavelet decomposition coefficients produced by the transformer using threshold values applied by the threshold circuit to produce altered wavelet coefficients from which the received signal is reconstructed with reduced noise.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: November 11, 2003
    Assignee: General Instrument Corporation
    Inventors: Patrick D. Smith, Robert Uskali, William C. Hart
  • Patent number: 6640111
    Abstract: A novel base station for cellular wireless communications based on a modular structure is provided. The modular cellular wireless communication base station includes a plurality of active radiator modules (ARM's) located at a desired antenna location, a beam forming network controlling relative amplitudes and phases of each of the modules and an RF front end. Each module (100) includes at least one antenna (ant) for transmitting and receiving, a transmitter having a power amplifier, and receiver.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: October 28, 2003
    Assignee: Celletra Ltd.
    Inventor: Joseph Shapira
  • Patent number: 6636737
    Abstract: A method for assigning channels for access points for a network providing wireless communications coverage for an environment, including assigning a weight indicative of overlapping coverage for each pair of access points having overlapping coverage, and assigning a channel to each of the access points based on certain sums of the weights to minimize coverage overlap between access points operating at the same channel.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: October 21, 2003
    Assignee: Carnegie Mellon University
    Inventors: Alexander H. Hills, Jon P. Schlegel