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:
Jun. 04, 2013
Filed:
Jun. 30, 2009
Daniel Bailey, Pepperell, MA (US);
Marco Ciaffi, Sudbury, MA (US);
William Duane, Westford, MA (US);
Ari Juels, Brookline, MA (US);
John O'brien, Boxborough, MA (US);
Daniel Bailey, Pepperell, MA (US);
Marco Ciaffi, Sudbury, MA (US);
William Duane, Westford, MA (US);
Ari Juels, Brookline, MA (US);
John O'Brien, Boxborough, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A technique of message-passing using shared memory of an RF tag involves storing a message in the shared memory while a security processor of the RF tag is in a sleep mode, the security processor being constructed and arranged to access the shared memory when the security processor is in a wakened mode. The technique further involves transitioning the security processor from the sleep mode to the wakened mode, and processing the message from the shared memory using the security processor after the security processor has transitioned from the sleep mode to the wakened mode. If the security processor is awakened only as needed (rather than remain in the wakened mode), lifetime of a battery which powers the security processor can be maximized.