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US 8,710,954 B2Granted
Method and apparatus for triggering expiration of a data tag device
AssigneeInternational Business Machines Corporation
InventorsKenneth L. Greenlee, Christian L. Hunt, Anne I. Ryan
Life of this patent
Estimating the term…
Abstract
The present invention discloses an active data tag device (100) which includes an expiration event generator (108), and a memory (106) which has tag data (116) stored therein. Upon the occurrence (614) of and expiration event, the tag disables access to the tag data.
Claims20
A method of triggering self-expiration of an active data tag device, comprising:
- initiating a clock in the active data tag device, the clock having a clock value which changes with time;
- comparing the clock value to an expiration value;
- providing access to tag data stored in the active data tag device, via an interface, while the clock value has not reached the expiration value;
- and
- disabling access to at least a portion of the tag data when the clock value reaches the expiration value.
2 more elements
An active data tag device, comprising:
- a memory element for storing tag data;
- an interface element for facilitating communication of the tag data in response to a query received at the interface element;
- a clock element having a clock value, the clock value which changes with time once the clock element is initiated;
- a control element for comparing the clock value to an expiration value, and disabling access to at least a portion of the tag data upon the clock value reaching the expiration value;
- and
- a battery element for providing power to at least the clock element and the control element.
3 more elements
A method of operating a self-expiring active data tag device, comprising:
- detecting an occurrence of an expiration event, which is an event internal to the self-expiring active data tag device, wherein the expiration event is triggered by components of the self-expiring active tag device;
- and
- disabling access to at least a portion of tag data stored in the self-expiring active data tag device.
A self-expiring active data tag device, comprising:
- a non-transitory machine readable storage medium containing tag data;
- a controller operably coupled to the machine readable storage medium;
- a radio interface circuit operably coupled to the controller;
- and
- an event generator coupled to the controller and configured to generate an expiration event;
- wherein the controller is configured to disable access to at least a portion of the tag data in response to the expiration event.
3 more elements
Dependencies are inferred from the claim text.