Patents Assigned to Holtek Semiconductor Corp.
  • Patent number: 6876939
    Abstract: The present invention discloses wave frequency calibration method and device for remote controller, the device of the present invention comprises an oscillator for generating a base wave; a storage for storing a match value; a modifier for generating a modified signal; and a processor connected to the oscillator, the storage and the modifier, the processor change the match value until the modified signal disappear and store the most updated match value in the storage to assure the receiving end of the remote controller can receive the signal with correct frequency. Incorporating with a RC oscillator, the wave frequency calibration method and device for remote controller of the present invention will avoid the problem of the bias of wave, which enables the RC oscillator to be a oscillator that can be used commonly in a regular remote controller.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: April 5, 2005
    Assignee: Holtek Semiconductor Corp.
    Inventors: Rong-Dzung Tsai, Chao-Kuo Lee
  • Publication number: 20040143409
    Abstract: The present invention discloses wave frequency calibration method and device for remote controller, the device of the present invention comprises an oscillator for generating a base wave; a storage for storing a match value; a modifier for generating a modified signal; and a processor connected to the oscillator, the storage and the modifier, the processor change the match value until the modified signal disappear and store the most updated match value in the storage to assure the receiving end of the remote controller can receive the signal with correct frequency. Incorporating with a RC oscillator, the wave frequency calibration method and device for remote controller of the present invention will avoid the problem of the bias of wave, which enables the RC oscillator to be a oscillator that can be used commonly in a regular remote controller.
    Type: Application
    Filed: November 26, 2003
    Publication date: July 22, 2004
    Applicant: Holtek Semiconductor Corp.
    Inventors: Rong-Dzung Tsai, Chao-Kuo Lee