Patents by Inventor Koji Yamamiya

Koji Yamamiya 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).

  • Personal computer with transmission and reception handset
    Patent number: 6553023
    Abstract: A personal computer having a convenient handset for transmitting and receiving a call. A handset (20) is connected to a personal computer (10) connected to a communication line. The personal computer (10) outputs audio data, received through the communication line, to the handset (20). The personal computer (10) includes an audio driver (12) to output audio data from the handset (20) to the communication line and a communication port driver (11) to transmit and receive audio data between it and the handset (20). The handset (20) is connected through an RS-232C cable (30) to the personal computer (10). The handset (20) transmits audio data to the personal computer only when a hookswitch (HS) is placed in the off-hook state. The audio driver (12) detects the condition of the hookswitch HS based on the existence of audio data from the handset (20).
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: April 22, 2003
    Assignees: Taiko Electric Works, Ltd., Nippon Telegraph and Telephone Corp.
    Inventors: Koji Yamamiya, Hiroyuki Suzuki