Patents by Inventor Masanori Isoda

Masanori Isoda 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).

  • Semiconductor memory operating with low supply voltage
    Patent number: 5264743
    Abstract: The present invention is intended to operate a semiconductor device at high speed with low voltage. A circuit configuration is used in which the transfer impedance between a common I/O line and a data line is changed depending on whether information is to be read or written. A current/voltage converter is provided which includes a MISFET different in conduction type to a select MISFET. Thus, the speed of reading information is increased. An intermediate voltage generator having high driving capability is provided. Thus, the circuit has sufficient driving capability for an LSI having large load capacitance. A voltage converter is provided which converts a data line supply voltage or word line supply voltage to a higher voltage. Therefore, stabilized signal transmission is ensured.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: November 23, 1993
    Assignees: Hitachi, Ltd., Hitachi VLSI Engineering Corporation
    Inventors: Yoshinobu Nakagome, Kiyoo Itoh, Hitoshi Tanaka, Yasushi Watanabe, Eiji Kume, Masanori Isoda, Eiji Yamasaki, Tatsumi Uchigiri