Patents by Inventor Takaharu Endo

Takaharu Endo 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).

  • Mobile communication terminal test system capable of visually recognizing communication condition and response signal
    Patent number: 7447500
    Abstract: A control unit outputs control information including time setting information for atransition test of a connection state of a mobile communication terminal of a cellular system. In accordance with the control information, a transmission/reception unit generates a plurality of test signals including predetermined messages to a plurality of cells, and varies them in accordance with a scheduled time passage to transmit them to the terminal and receive response signals including predetermined messages from the terminal. A measurement unit measures time domain waveforms of the response signals, and an acquiring unit acquires and stores messages and radio-communication time information when the messages are exchanged.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: November 4, 2008
    Assignee: Anritsu Corporation
    Inventors: Takaharu Endo, Makoto Onuki