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. 24, 2009
Filed:
Jul. 30, 2004
Applicants:
Brian A. Franchuk, Richfield, MN (US);
Roger R. Benson, Eden Prairie, MN (US);
Inventors:
Brian A. Franchuk, Richfield, MN (US);
Roger R. Benson, Eden Prairie, MN (US);
Assignee:
Fisher-Rosemount Systems, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01); H04L 12/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device on a process control network transmits scheduled messages at periodic intervals and unscheduled messages between scheduled message transmissions. A dynamic time remaining value is produced by subtracting a current timer value from a next scheduled event time each time the timer is incremented. If the time required to transmit an unscheduled message is greater than the time remaining value, the message is not transmitted.