Patents by Inventor Junko Yamagishi

Junko Yamagishi 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).

  • Patent number: 5519874
    Abstract: A subscriber terminal service system, which has a switchboard connected to a plurality of subscriber terminals and a computer connected with the switchboard and executes services to subscribers, has the functions of setting a flag indicative of the possibility/impossibility of the execution of an application on the basis of a message sent from the computer, referring to the flag in response to a service request sent from the subscriber terminal to determine whether or not the execution of the requested application should be permitted, sending a control message to the switchboard when the condition of possibility/impossibility of the execution of an application on the computer, and changing the content of the flag in the switchboard on the basis of the control message. The start or stop of any application executed in the computer is made through a console device connected with the computer or by a scheduler provided in the computer.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: May 21, 1996
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System, Ltd.
    Inventors: Junko Yamagishi, Takuo Tsuzuki, Noboru Mizuhara, Tetsuo Sakuma, Tomoaki Tsunoda
  • Patent number: 5197096
    Abstract: A switching system is provided in which when a calling subscriber has transmitted an identification (ID) number of a called subscriber and an ID number of the calling subscriber from a calling terminal to a switching equipment having a subscriber control table at the time of making a call, the switching equipment receives the ID numbers and connects the calling terminal with the called terminal.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: March 23, 1993
    Assignees: Hitachi, Ltd., Hitachi Microcomputer Engineering Ltd.
    Inventors: Tetsuo Sakuma, Noboru Mizuhara, Tomoaki Tsunoda, Junko Yamagishi