Patents by Inventor Hidetoshi Uehara

Hidetoshi Uehara 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).

  • High-speed differential amplifier
    Patent number: 5192878
    Abstract: A differential amplifier compares a potential difference between a first input (A.sub.in) and a second input (V.sub.r) and provides complementary output signals (A, A). The differential amplifier comprises a flip-flop (20) having nodes (N1, N2) and nodes (N3, N4) and a fixing means composed of N-channel FETs (33, 34) having drains connected to the nodes (N3, N4) of the flip-flop circuit (20) and sources connected to a second potential (V.sub.SS) and inverters (31, 32) having inputs to which output signals (A, A) are applied and outputs connected to gates of the N-channel FETs (33, 34). The fixing means detects a potential drop of the output signals (A, A) and fixing the nodes (N3, N4) connected to the nodes (N1, N2) to the second potential (V.sub.SS).
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 9, 1993
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Sanpei Miyamoto, Hidetoshi Uehara