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. 19, 2013
Filed:
Jun. 03, 2009
Joseph E. Bange, Eagan, MN (US);
Allan T. Koshiol, Lino Lakes, MN (US);
Paul Holmquist, Andover, MN (US);
Karen M. Kramer, Marine on Saint Croix, MN (US);
Thomas J. Harris, Shoreview, MN (US);
Joseph E. Bange, Eagan, MN (US);
Allan T. Koshiol, Lino Lakes, MN (US);
Paul Holmquist, Andover, MN (US);
Karen M. Kramer, Marine on Saint Croix, MN (US);
Thomas J. Harris, Shoreview, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
Methods and systems for media access control allow master and slave nodes of a network to communicate using the same carrier while avoiding collisions of transmissions. At least one slave node is an implantable device. Master nodes initiate all data exchange sequences, and slave nodes are responsive to the data exchange sequences. The exchange sequences begin by master nodes contending for use of the carrier through a countdown procedure. A set order of communications occurs between a master node who won the contention and a slave node being communicated with by the master node to transfer a data frame. Contention is then repeated to determine the next master node that is allowed to transfer a data frame. New master nodes entering the network employ a discovery process to poll for existing devices in the network.