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:
Aug. 21, 2012
Filed:
Jul. 13, 2004
Arthur G. Howarth, San Jose, CA (US);
Rajiv Singhal, San Jose, CA (US);
Arthur G. Howarth, San Jose, CA (US);
Rajiv Singhal, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Methods and devices are provided for determining the status of a networked device, e.g., a networked RFID device. In some embodiments of the invention, a customized packet is used to transmit a 'heartbeat' from each of a plurality of networked devices to a server. Some such embodiments use a customized syslog packet for the heartbeats. The heartbeat includes identification information regarding the device, e.g., the unique electronic product code ('EPC') of the device. The identification information may include other identification and/or authentication information, such as a shared secret and time data, which may be hashed with the identification information. The heartbeat may include information indicating the health, accuracy and/or reliability of the device and/or of the network that includes the device.