Patents Examined by Almaz Woldu
  • Patent number: 5265272
    Abstract: A loop antenna (10) for use in a wrist band radio (50) comprises a series of interconnected links (2 and 4) forming a wristband, a flexible conductor (30) retained between the interconnected links forming the loop antenna, and a connector at the end portions of the series of links for electronically coupling the flexible conductor to the radio.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: November 23, 1993
    Assignee: Motorola, Inc.
    Inventor: Robert Kurcbart
  • Patent number: 5239681
    Abstract: A radio data system transmits message groups comprising four blocks of which the first block always carries the program identification code for the transmitting network (P1(TN)). One type of message group, identified by a corresponding group type code (GT) in a second block always carries a program identification code for another network (PI(ON) in a fourth block and carries various corresponding items of information in a third block. Which of these various items is in the third block is identified by a user code (UC) in the second block. The items of information in the third block may in particular include alternative frequency codes for the other network identified in the fourth block.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: August 24, 1993
    Assignee: British Broadcasting Corporation
    Inventors: Simon J. Parnall, Jonathan D. Newland, Theo Kamalski, Sten Bergman, Josef Berger
  • Patent number: 5235415
    Abstract: A device for allowing fee paying subscribers access to television or radio programs includes a keyboard unit for requesting messages concerning the programs. Information describing the program fees and account status is contained in a subscriber held security processor such as a smart card. As a function of the content of the requests a mechanism converts the information contained in the security processor into intelligible messages as a function of complementary information transmitted regularly within television and/or radio signals.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: August 10, 1993
    Assignees: Centre National d'Etudes des Telecommunications, Telediffusion de France
    Inventors: Pierre Bonicel, Jean-Pierre Heon, Christian Gautier
  • Patent number: 5230096
    Abstract: A radio receiver antenna arrangement incorporating an RF pre-amplifier (5) wherein circuitry (11 to 21) is provided for by-passing the pre-amplifier when strong signals are picked up by the antenna (1) to avoid overloading the pre-amplifier.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: July 20, 1993
    Assignee: The General Electric Company, p.l.c.
    Inventors: John Davies, Kenneth Duffy, Imtiaz Zafar
  • Patent number: 5222254
    Abstract: A receiver, adapted to the reception of identification data in accordance with the RADIO DATA system (RDS) and having only one tuner, effects the acquisition of the identification code of an alternative channel by sampling the alternative channel during periods in which the audio output of the receiver is muted. These periods are of such a short duration that they are not noticed by the listener.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: June 22, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Francoise Verron, Serge Verron
  • Patent number: 5212812
    Abstract: A device automatically re-keys a transmitter after a transmission ceases, and thereafter transmits a preselected audio signal. The device has a key-open sensor for sensing the end of a transmission and for initiating the audio signal. A keying circuit is controlled by the sensor to re-key the transmitter. An audio sensor senses the presence of the audio signal and controls the keying circuit to un-key the transmitter when the audio signal ceases.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: May 18, 1993
    Assignee: Mr. Jiggs CB Development, Inc.
    Inventor: Roy F. Dutton
  • Patent number: 5204971
    Abstract: A sound system for a vehicle detects the amount of noise, such as road noise, and automatically controls the audio volume in accordance with the noise amount. There are provided a plurality of tables, in which the relationships among the present volume, the noise amount and the volume increase amount of the audio signal are stored. Once one of the plurality of tables is selected by using a table selection key according to the type of the vehicle or the sound system, the volume is automatically controlled based on the characteristic of the selected table.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: April 20, 1993
    Assignee: Alpine Electronics, Inc.
    Inventors: Masahiro Takahashi, Yoshikatsu Watanabe
  • Patent number: 5193223
    Abstract: A TDMA cellular telephone (600) includes in its transmit signal path, microphone (608), vocoder (612), data format circuitry (601), quadrature modulator (602), 90 MHz local oscillator (606), transmitter with mixer (604), transmitter filter (618), and antenna (620). In its receive signal path, the TDMA cellular telephone (600) includes receiver filter (622) coupled to antenna (620), quadrature demodulator (624), and data deformat circuitry (625). The channel frequency of TDMA cellular telephone (600) is loaded into synthesizer (616) by microcomputer (614) and applied to transmitter (604) and demodulator (624). TDMA cellular telephone (600) is controlled by microcomputer (614) which includes a memory with a control and signaling computer program stored therein.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: March 9, 1993
    Assignee: Motorola, Inc.
    Inventors: Thomas J. Walczak, Stephen V. Cahill
  • Patent number: 5175873
    Abstract: A selective call receiver includes first and second housing portions forming a chamber therebetween which houses the electronic circuitry for receiving messages, a display for displaying the messages, and an annunciator for alerting a user that a message has been received. The first housing portion has an opening therein through which keys of an elastomeric keypad are accessible to the user. The keypad also includes a base portion for forming a seal between the first and second housing portions and a rim which extends into an additional opening in the first housing portion proximate the periphery thereof for sealingly receiving a lens therein.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: December 29, 1992
    Assignee: Motorola, Inc.
    Inventors: Michael P. Goldenberg, Tek-Choy Kok, Martin D. McCluskie, Scott L. Dill