Patents by Inventor Chikaharo Hori

Chikaharo Hori 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).

  • Adder-subtracter for signed absolute values
    Patent number: 5148386
    Abstract: An adder-subtracter for signed absolute values wherein two inputs of signed absolute values are operated with circuits based on the two's complement representation and the operated on result is output in the form of signed absolute value. The adder-subtracter executes two kinds of a subtractive operations for inputs in the form of signed absolute values in parallel. One of the operated results should then be selected according to the sign of the subtracted result, and inverted to be output depending on the sign so as to obtain a subtractive result directly in the form of a signed absolute value.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: September 15, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Chikaharo Hori