Patents by Inventor David Ryon

David Ryon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Telecommunication Device and Baseband Processor For this Device
    Publication number: 20080194294
    Abstract: The telecommunication device (6) comprises: a housing (12), a Subscriber Identity Module (SIM) card holder (28) within the housing, and a printed circuit board (14) having a baseband processor and a first radio transceiver (16) to receive and transmit a plurality of telephone calls, a second radio transceiver (30) adapted to communicate with a SIM card inserted into the SIM card holder using wireless communication.
    Type: Application
    Filed: June 8, 2005
    Publication date: August 14, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: David Ryon
  • Control signal for a voltage generator for an LCD screen control circuit
    Patent number: 5909106
    Abstract: For controlling a voltage generator (1), a control signal (PBM) is used, with an active part having a variable number of pulses (N) which determines the value of the output voltage of the generator. The output voltage of the generator is used to control the contrast of an LCD screen and the number of pulses in the control signal is adjusted in accordance with the temperature of the LCD screen to compensate for the effect that temperature has upon contrast.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: June 1, 1999
    Assignee: U.S. Philips Corporation
    Inventors: David Ryon, Alain Boursier, Paul Norman, Richard Dauvillier