Patents by Inventor Toru Henmi

Toru Henmi 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).

  • Error detection and correction of a semiconductor memory device
    Patent number: 5469451
    Abstract: A semiconductor memory includes a main PROM for storing main data, a error correcting PROM for storing correcting data, a error correcting circuit for correcting the main data with the correcting data, and control register for supplying a control signal to the error correcting circuit. An error correction of the correcting circuit is halted during the debugging of a program by the control signal of "invalid".
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: November 21, 1995
    Assignee: NEC Corporation
    Inventor: Toru Henmi