The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2002
Filed:
Sep. 30, 1999
Trenton Corey Minyard, Richardson, TX (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
Disclosed is a method and an apparatus that can provide backup CPU data synchronization in a time minimization process. All external messages received, that are to be processed by a primary CPU , are also stored in a message list of the backup CPU . Check-point message data is intelligently stored in the backup CPU by first deleting related external messages from backup message list and then creating a record if none already exists and filling only those fields referenced in the check-point message. If a record does exist, only the check-point message data fields are altered in that existing record. When a data synchronization record is received by the backup CPU , a check is made to see if such a record has already been created by a check-point message. If not, a record is created in the backup CPU database and all the fields are made to correspond with the received data synchronization record message. If such a record is found, only those fields not already containing data are filled from the received data synchronization record message. In this manner a single pass through the primary CPUs database is sufficient to obtain data synchronization of the backup CPU