Patent Yard Sign in
Expired Canadian patentCanada

Synchronous data receiver circuit

CA 1236167 A · Owner: Nec Corporation · Inventors: Sato, Osamu

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

The synchronous data receiver circuit after, temporarily storing received data in a data memory having a large enough capacity to store at least two frames detects a frame synchronization signal pattern with a pattern match circuit, then stores the message data alone of the received data in a data buffer, detects errors with a decoder and checks whether the detected frame synchronization signal pattern is the correct pattern of the frame synchronization signal or a wrong frame synchronization signal pattern contained in the message data. If it is the correct frame synchronization signal the message data is sent to a data processing unit at the next stage or, if it is a wrong frame …

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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 21, 1985
GrantedMay 3, 1988
Term endedMay 3, 2005
Patent numberCA 1236167 A
Classification (IPC)H04B1/40 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJune 21, 1985Patent grantedMay 3, 1988Term endedMay 3, 2005

Sources & verification

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