Patents by Inventor Kazuo Iquchi

Kazuo Iquchi 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).

  • Multiplexing apparatus having BSI-code processing and bit interleave functions
    Patent number: 4829518
    Abstract: A multiplexing apparatus of a bit interleave type for time-division multiplex on PCM signals of a plurality of channels bit by bit to convert the PCM signals into a high-speed PCM signal. To maintain the advantage of the synchronous multiplex system, the multiplexing apparatus has a BSI-code processing function and a bit interleave function and comprises: a BSI-code adding circuit for adding BSI codes to the PCM signals before multiplexing; a BSI-code position shifting means circuit for shifting the positions of the BSI codes in the PCM signals to different positions respectively with respect to the PCM signals of a plurality of channels; and a multiplexing circuit for multiplexing the outputs of the BSI-code position shifting circuit by a bit-interleave mode.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: May 9, 1989
    Assignee: Fujitsu Limited
    Inventors: Kazuo Iquchi, Tetsuo Soejima, Kazuo Murano