Patent Yard Sign in
Expired Canadian patentCanada

Multiplexing apparatus having bsi-code processing and bit interleave functions

CA 1281144 C · Owner: Murano, Kazuo · Inventors: Iguchi, Kazuo; Murano, Kazuo; Soejima, Tetsuo

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

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 …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1988
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1281144 C
Classification (IPC)H04J3/04 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 18, 1988Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.