Patent Yard Sign in
Expired Canadian patentCanada

Systems and methods for implementing cyclic redundancy checks

CA 2698730 C · Owner: Steele, Brian · Inventors: Wiley, George A.; Steele, Brian

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

Cyclic redundancy checks to improve link initialization processing and to exchange system error information are described. A cyclic redundancy check (CRC) checker including a unique pattern detector (710) a CRC generator (720), a CRC initializer (730) and a CRC verifier (740) is described. The CRC checker prepopulates the CRC generator for a unique pattern. Upon receipt (850) of the unique pattern within a data stream received over a digital transmission link such as an MDDI link the CRC checker checks CRCs (860) without queueing and storing data. The CRC generator system can also intentionally corrupt CRC values to transmit system error information the CRC generator system including a CRC …

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

  • Filed November 23, 2005 and granted June 18, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 23, 2005
GrantedJune 18, 2013
Term endedNovember 23, 2025
Patent numberCA 2698730 C
Classification (IPC)H03M13/09 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedNov 23, 2005Patent grantedJune 18, 2013Term endedNov 23, 2025

Sources & verification

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