Patents by Inventor Toshikazu Sasa

Toshikazu Sasa 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).

  • Intermittenceless switching system
    Patent number: 5353281
    Abstract: An intermittenceless switching system includes two speech path memories having sufficient capacity to store a single frame of data having a plurality of time slots. The incoming data is stored in one memory, while the outgoing data is read from the other memory. A control circuit continuously alternates the read/write functions between the two memories. A control memory is used to store switch control information. The system includes a buffer memory that is present between a data processor and the control memory to prevent switch operation during data transmission. The system also includes a monitoring circuit for detecting an indication bit signifying the presence or absence of data in the time slot.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: October 4, 1994
    Assignees: Kokusai Electric Co., Ltd., Hitachi, Ltd.
    Inventors: Hiroshi Kuwahara, Kazuhiro Suzuki, Toshikazu Sasa, Kenzo Urabe, Arata Nakagoshi, Hideya Suzuki, Yohichi Ogawa, Tsuneo Furuya, Yoshinobu Yamamoto