Patents by Inventor Kian Kie Ong

Kian Kie Ong 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).

  • Circuit for the conversion of a digital signal to an analog signal
    Patent number: 4096475
    Abstract: A digital-to-analog converter using a combined pulse rate and pulse width modulation of an output signal of a circuit for providing a digital signal to be converted to a periodically occurring series of digital comparison signals to be obtained by a proper choice of a particular series. The digital-to-analog converter has a very small error which, due to its low temperature sensitivity, is particularly suitable for tuning circuits of television receivers.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: June 20, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Kian Kie Ong
  • Control device
    Patent number: 3980955
    Abstract: For simultaneous correction of all function adjustments of, for example, a television receiver, adjustable correcting information is stored by means of a normal function control members in a memory which is read out on operation of a function correction member.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: September 14, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Kian Kie Ong