Patent Yard Sign in
Expired Canadian patentCanada

Apparatus for suspending a system clock when an initial error occurs

CA 1208800 A · Owner: International Business Machines Corporation · Inventors: Roche, Thomas J.; Oza, Bharatkumar J.; Howe, Leland D. Jr.

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

An apparatus disposed within a computer system is disclosed for sensing the existence of an error occurring within a computer system and for suspending an internal system clock when a certain number of clock pulses are generated following the occurrence of the error. When the internal system clock is suspended, operation of the computer system stops. In the preferred embodiment, the internal system clock is suspended when two (2) clock pulses are generated following the occurrence of the error. As a result it is not necessary to wait until, execution of the current instruction is complete before stopping the operation of the computer system. Therefore, other errors are not generated within …

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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1984
GrantedJuly 29, 1986
Term endedJuly 29, 2003
Patent numberCA 1208800 A
Classification (IPC)G06F11/00 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 18, 1984Patent grantedJuly 29, 1986Term endedJuly 29, 2003

Sources & verification

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