Patents by Inventor Hideyasu Hamasaki

Hideyasu Hamasaki 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).

  • Intelligent modem system which determines proper access thereto
    Patent number: 5131025
    Abstract: An intelligent modem system which is used for connecting an information processing terminal such as a microcomputer with a public communication line by modulating and demodulating the data transmitted between the information processing terminal and the public communication line, comprising: an information set up circuit which can set up at least ID information; and a reception operation control circuit which verifies if an incoming call is from an authorized party or not by responding to the public communication line according to the ID information, and connects a modem circuit connected to the public communication line to a line leading to the information processing terminal only when an incoming call is confirmed to be from an authorized party.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: July 14, 1992
    Assignee: Omron Tateisi Electronics Co.
    Inventor: Hideyasu Hamasaki