Patents by Inventor Katsumi Yahiro

Katsumi Yahiro 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).

  • Patent number: 6476655
    Abstract: A semiconductor device according to the invention is composed of a counter which outputs intermediate carry signals (CARRY 0, 1, 2) and the final carry signal (CARRY END) for determining the end of a delay output signal in a period starting from a delay pulse-generating trigger signal (DPT) and continuing for a predetermined time, and a delay circuit which outputs count up signals (COUNT UP) for counting up the counter on the basis of pulse signals generated in accordance with the intermediate carry signals and the DPT. According to the aforementioned semiconductor device, the delay output signal can be outputted without using an external clock signal.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: November 5, 2002
    Assignee: NEC Corporation
    Inventor: Katsumi Yahiro
  • Publication number: 20010053195
    Abstract: A semiconductor device according to the invention is composed of a counter which outputs intermediate carry signals (CARRY 0, 1, 2) and the final carry signal (CARRY END) for determining the end of a delay output signal in a period starting from a delay pulse-generating trigger signal (DPT) and continuing for a predetermined time, and a delay circuit which outputs count up signals (COUNT UP) for counting up the counter on the basis of pulse signals generated in accordance with the intermediate carry signals and the DPT. According to the aforementioned semiconductor device, the delay output signal can be outputted without using an external clock signal.
    Type: Application
    Filed: May 2, 2001
    Publication date: December 20, 2001
    Inventor: Katsumi Yahiro