Patents by Inventor Peter Wardlow Shadwell

Peter Wardlow Shadwell 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).

  • Differential oscillator having two sides, an integrated circuit including the differential oscillator, a mobile telephone including the differential oscillator, and method of operating the differential oscillator
    Patent number: 7187248
    Abstract: A differential oscillator circuit, including an oscillator having a first side and a second side and bias circuitry for applying a bias voltage to the first and second sides of the oscillator wherein the bias circuitry is arranged such that, upon start-up, the bias voltage is not applied to the second side of the oscillator until after the first side of the oscillator by a delay period.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: March 6, 2007
    Assignee: Sony United Kingdom Limited
    Inventor: Peter Wardlow Shadwell
  • Digital receiver for receiving and demodulating a plurality of digital signals and method thereof
    Patent number: 6542203
    Abstract: A method of receiving and demodulating a plurality of digital signals transmitted with different respective carrier frequencies and a digital receiver for receiving and demodulating a plurality of digital signals transmitted with different respective carrier frequencies wherein the carrier frequency signals are down converted to respective base-band signals and digitized and a common demodulator is provided to demodulate the respective digitized base-band signals in a time division manner.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: April 1, 2003
    Assignee: Sony United Kingdom Limited
    Inventors: Peter Wardlow Shadwell, Adrian Charles Paskins