Patents Represented by Attorney, Agent or Law Firm Raymond A. Jenski
  • Method and apparatus for decoding of frequency inversion based scramblers
    Patent number: 4984219
    Abstract: A method and apparatus for decoding of frequency inversion based scramblers is disclosed. A quadrature amplitude modulation detector determines the frequency of the tone used for inverting the scrambled signal by determining which of a plurality of quadrature detector pairs, each using a different conversion frequency, has the greatest magnitude difference between the quadraturely related signals. The frequency of the quadrature pair with the greatest difference is the frequency of the inverting tone during the inverting period of time. This frequency information is used to generate a reinversion tone to unscramble the scrambled signal.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: January 8, 1991
    Assignee: Motorola, Inc.
    Inventors: Daniel P. Brown, Larry C. Puhl
  • Multiplexed synchronous/asynchronous data bus
    Patent number: 4972432
    Abstract: A multiplexed synchronous/asynchronous data bus is disclosed in which three bus lines are used to convey bidirectional synchronous data between at least two data devices at a relatively low data rate. Half duplex asynchronous data is applied at a higher data transfer rate to one of the three bus lines when another of the bus lines is held in a logic high state.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: November 20, 1990
    Assignee: Motorola, Inc.
    Inventors: Gregory P. Wilson, Bryan A. Potratz, Thomas J. Walczak, Jeffery L. Mullins
  • Battery charger housing for batteries of differing dimensions
    Patent number: 4963812
    Abstract: A battery charger for charging batteries of varying sizes is disclosed. Batteries to be charged are inserted into a recess in the battery charger housing and are captivated by a lip portion which extends into the recess. The lip portion has a plurality of surfaces, one of which surfaces contacts a surface of a battery of one size and maintains the position of the battery against the charging contacts of the battery charger. Different size batteries contact different lip surfaces.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 16, 1990
    Assignee: Motorola, Inc.
    Inventors: Nicholas Mischenko, Albert L. Nagele
  • Multiple resonator dielectric filter
    Patent number: 4954796
    Abstract: A duplexer for a radio transceiver is disclosed in which two volumes of dielectric material each have at least two holes and each is covered with a conductive material except for one surface. An electrode on the one surface of each volume is coupled to one of the holes and is coupled to a substrate via a terminal passing through a mounting device. The substrate provides coupling between the terminals of the two volumes and a common antenna.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: September 4, 1990
    Assignee: Motorola, Inc.
    Inventors: Steven R. Green, David M. De Muro, Michael F. Moutrie, Raymond L. Sokola, Phillip J. Gordon
  • Dual source rechargeable battery
    Patent number: 4922178
    Abstract: A rechargeable battery assembly for a hand-held radio is disclosed. The battery assembly has electrical terminals through which the battery may supply energy and be charged. Further, the battery assembly has retractable plug prongs through which the battery may be charged from a conventional 120VAC receptacle. Provision is made to prevent hazardous voltages and currents from being present at the battery electrical terminals.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: May 1, 1990
    Assignee: Motorola, Inc.
    Inventors: Gerald Matuszewski, William J. Mashek
  • Frame comparison method for word recognition in high noise environments
    Patent number: 4918732
    Abstract: A method and arrangement for a speech recognition system employs channel bank information to represent speech. The method considers background noise included with the speech. The method includes determining three energy levels for each channel the first representative of background noise energy, the second representative of the input frame energy and the third representative of the word template frame energy. Values representing energy level differentials are assigned at each channel. If the second energy level is less than the first energy level, then a predetermined constant value is assigned at the particular channel. These values are combined to generate a distance measure depicting the similarity between the two frames.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 17, 1990
    Assignee: Motorola, Inc.
    Inventors: Ira A. Gerson, Brett L. Lindsley
  • Communications system with tandem scrambling devices
    Patent number: 4914696
    Abstract: An intermediate scrambling device for a radiotelephone system is disclosed by which it is possible to establish and maintain scrambled communications between an originating scrambler terminal and the most distant companion scrambler on the circuit. The intermediate scrambler may establish and maintain the scrambled communications if it is the most distant scrambler, or it may become transparent to a more distant scrambler.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: April 3, 1990
    Assignee: Motorola, Inc.
    Inventors: Cary M. Dudczak, Mark W. McGuire, David T. Tennant
  • Mechanical fastening system for an electronic equipment housing
    Patent number: 4912602
    Abstract: A housing for miniature electronic equipment is disclosed. A mechanical fastening system is utilized in holding front and rear portions of the housing together without conventional fasteners. The front housing portion has cantiliever beam spring catches which penetrate slots in the rear housing and captivate the rear housing and internal components. The spring catches are fixed in position by supporting rails of a detachable battery.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: March 27, 1990
    Assignee: Motorola, Inc.
    Inventors: Michael W. Zurek, Ross P. Goodwin, Scott D. Beutler
  • Battery housing with integral latch and positive displacement apparatus
    Patent number: 4904549
    Abstract: A battery housing with an integral latch and a cantilevered spring finger positive displacement mechanism is disclosed. The slide-on battery is captivated by guide rails on each side of the mating surface of the battery housing. When the battery is properly located, a torsion bar latch locks the battery in place. When the latch is activated by the user to remove the battery, cantilevered spring fingers force the battery housing away from its locked position.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: February 27, 1990
    Assignee: Motorola, Inc.
    Inventors: Ross P. Goodwin, Michael W. Zurek
  • Selective system scan for multizone radiotelephone subscriber units
    Patent number: 4905301
    Abstract: A radiotelephone subscriber unit which overcomes the problem of attempting to access an undesired radiotelephone system is disclosed. A comparison between the system identification transmitted on a control channel of a desired radiotelephone system and the system identification transmitted on an access channel is made during the access process of the subscriber unit. Access is permitted if the control channel system identification and the access channel system identification match.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: February 27, 1990
    Assignee: Motorola, Inc.
    Inventors: Robert K. Krolopp, Thomas J. Auchter, Jeffery L. Mullins
  • Vehicular handset telephone control unit or similar article
    Patent number: D306293
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: February 27, 1990
    Assignee: Motorola, Inc.
    Inventors: Albert L. Nagele, Terrance N. Taylor
  • Vehicular handset telephone control unit or similar article
    Patent number: D306441
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: March 6, 1990
    Assignee: Motorola, Inc.
    Inventors: Terrance N. Taylor, Albert L. Nagele
  • Telephone handset hang-up holder or similar article
    Patent number: D306594
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: March 13, 1990
    Assignee: Motorola, Inc.
    Inventor: Terrance N. Taylor
  • Telephone handset hang-up device or similar article
    Patent number: D307271
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: April 17, 1990
    Assignee: Motorola, Inc.
    Inventor: Albert L. Nagele
  • Portable radiotelephone or similar article
    Patent number: D309451
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: July 24, 1990
    Assignee: Motorola, Inc.
    Inventor: Albert L. Nagele
  • Battery charger or similar article
    Patent number: D314173
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: January 29, 1991
    Assignee: Motorola, Inc.
    Inventors: Leonid Soren, Gary R. Weiss
  • Battery charger or similar article
    Patent number: D315330
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: March 12, 1991
    Assignee: Motorola, Inc.
    Inventors: Leonid Soren, Gary R. Weiss, Albert L. Nagele
  • Portable radiotelephone or similar article
    Patent number: D315346
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: March 12, 1991
    Assignee: Motorola, Inc.
    Inventor: Albert L. Nagele
  • Vehicular handset telephone control unit or similar article
    Patent number: D315559
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: March 19, 1991
    Assignee: Motorola, Inc.
    Inventors: Terrance N. Taylor, Albert L. Nagele
  • Housing panel for a telephone handset or similar article
    Patent number: D315565
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: March 19, 1991
    Assignee: Motorola, Inc.
    Inventor: Terrance N. Taylor