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. 17, 2009
Filed:
Dec. 29, 2005
Selcuk Suat Eren, Chapel Hill, NC (US);
Brian Jules Jaeger, Chapel Hill, NC (US);
Douglas Alan Law, Chapel Hill, NC (US);
Paul Allen Roberts, Raleigh, NC (US);
Shawn Konrad Sremaniak, Chapel Hill, NC (US);
Selcuk Suat Eren, Chapel Hill, NC (US);
Brian Jules Jaeger, Chapel Hill, NC (US);
Douglas Alan Law, Chapel Hill, NC (US);
Paul Allen Roberts, Raleigh, NC (US);
Shawn Konrad Sremaniak, Chapel Hill, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus and method are disclosed for detecting whether a device has been tilted beyond a predefined threshold. A casing is included for temporarily enclosing a radio frequency identification (RFID) tag. The RFID tag is unable to receive an RFID interrogation signal when the RFID tag is enclosed in the casing. The tilting of the device is monitored. In response to the amount of tilt exceeding the predefined threshold, the RFID tag is exposed to radio frequency (RF) signals. The RFID tag receives the RFID interrogation signal when the RFID tag is exposed. The RFID tag transmits a reply RFID signal in response to a receipt by the RFID tag of the RFID interrogation signal. The RFID tag transmits the RFID reply signal only when the RFID tag is exposed which indicates that tilting of the device beyond the predefined threshold has occurred.