Patents by Inventor Chung-Wen Kao

Chung-Wen Kao 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).

  • Method and apparatus for connecting buses with different clock frequencies by masking or lengthening a clock cycle of a request signal in accordance with the different clock frequencies of the buses
    Patent number: 7219177
    Abstract: A method and an apparatus in a computer system for connecting buses with different clock frequencies are provided. The method comprises receiving a request transmitted from a master to a slave. If the clock frequency of the master is lower than that of the slave such that the slave sees more requests than the master does, redundant cycles of the request signal are masked lest the slave repeatedly receive the request. The request is then transferred to the slave. If the clock frequency of the master is higher than that of the slave such that the slave cannot receive the request in time, then the request signal is lengthened so that the request signal is synchronized with the clock cycles of the slave. The output data responded from the slave is then transferred to the master.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: May 15, 2007
    Assignee: Winbond Electronics Corp.
    Inventors: Hen-Kai Chang, Chung-Wen Kao, Chih-Chieh Chuang, Chun-Nan Li, Te-Tsoung Tsai, Hsi-Yuan Wang
  • METHOD AND APPARATUS FOR CONNECTING BUSES WITH DIFFERENT CLOCK FREQUENCIES
    Publication number: 20060112205
    Abstract: A method and an apparatus in a computer system for connecting buses with different clock frequencies are provided. The method comprises receiving a request transmitted from a master to a slave. If the clock frequency of the master is lower than that of the slave such that the slave sees more requests than the master does, redundant cycles of the request signal are masked lest the slave repeatedly receive the request. The request is then transferred to the slave. If the clock frequency of the master is higher than that of the slave such that the slave cannot receive the request in time, then the request signal is lengthened so that the request signal is synchronized with the clock cycles of the slave. The output data responded from the slave is then transferred to the master.
    Type: Application
    Filed: November 23, 2004
    Publication date: May 25, 2006
    Inventors: Hen-Kai Chang, Chung-Wen Kao, Chih-Chieh Chuang, Chun-Nan Li, Te-Tsoung Tsai, Hsi-Yuan Wang