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Last Updated: March 19, 2024

Details for Patent: 9,043,925


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Title:Method and apparatus for prevention of tampering and unauthorized extraction of information from microdevices
Abstract: A system for protection of information on a secured microdevice, including a control unit, an obliteration driver, and a circuit arranged to conduct the at least one pulse of electric current. The circuit incorporates at least one resistive load having a localized predetermined resistance such that the delivered portion of stored electric energy is locally resistively converted into a mechanical energy of motion during a time period shorter than a duration of time needed for heat diffusion out a volume in the proximity of the at least the fraction of stored information.
Inventor(s): Mostovych; Andrew N. (Silver Spring, MD)
Assignee: Enterprise Sciences, Inc. (College Park, MD)
Filing Date:Dec 03, 2012
Application Number:13/692,545
Claims:1. A system for prevention of tampering, unauthorized use, and unauthorized extraction of information from at least one secured microdevice, comprising: a control hardware arranged to generate a command to trigger a controlled obliteration of at least a fraction of stored information on the at least one secured microdevice; an obliteration driver arranged to store electric energy and to generate, when triggered by the control hardware, at least one pulse of electric current; a circuit arranged to conduct the at least one pulse of electric current toward at least one resistive dissipative load structure arranged in a proximity of the at least the fraction of stored information on the at least one secured microdevice, and connected to controllably release a delivered portion of stored electric energy in the proximity of the at least the fraction of stored information on the least one secured microdevice, such that the at least the fraction of stored information has been obliterated during the controllable release; wherein, the circuit arranged to conduct the at least one pulse of electric current incorporates at least one resistive load having a localized predetermined resistance such that the delivered portion of stored electric energy is locally resistively converted into a mechanical energy of motion during a time period shorter than a duration of time needed for heat diffusion out a volume in the proximity of the at least the fraction of stored information.

2. The system of claim 1, wherein the at least one resistive load incorporates a resistor having a predetermined resistance defined by processing of a conductive material applying a set of preparatory actions consisting of casting, molding, pressure forming, ablation, extrusion, sintering, printing, film depositing, lithographic forming, cutting, milling, turning, etching, chemically depositing (from vapors, solvents and reactive media), chemical etching, implanting (neutral and ion), plasma processing, and mixtures and combinations of above actions.

3. The system of claim 1, wherein the at least one resistive load is arranged to be embedded into a substrate supporting an information containing region of the at least one secured microdevice.

4. The system of claim 3, wherein the at least one resistive load is arranged in a proximity of a thermally-conductive portion arranged to manage heat removal from the at least one secured microdevice.

5. The system of claim 3, wherein the at least one resistive load is arranged in a proximity of a predetermined potential plane the at least one secured microdevice.

6. The system of claim 3, wherein the at least one conducting via is insulated from the substrate supporting an active portion of the at least one secured microdevice having insulation resistant to electric breakdowns driven by the least one pulse of electric current.

7. The system of claim 1, wherein the circuit arranged to conduct the at least one pulse of electric current incorporates at least one conducting via.

8. The system of claim 1, wherein the at least one resistive load includes at least one test connector configured to connect to at least one testing device.

9. A system for prevention of tampering, unauthorized use, and unauthorized extraction of information from at least one secured microdevice device, comprising: a control hardware arranged to generate a command to trigger a controlled obliteration of at least a fraction of stored information on the at least one secured microdevice; an obliteration driver arranged to store electric energy and to generate when triggered by the control hardware, at least one pulse of electric current; a circuit arranged to conduct the at least one pulse of electric current toward at least one resistive dissipative load structure arranged in a proximity of the at least the fraction of stored information on the at least one secured microdevice, and connected to controllably release a delivered portion of stored electric energy in the proximity of the at least the fraction of stored information on the least one secured microdevice, such that the at least the fraction of stored information has been obliterated during the controllable release: wherein, the circuit arranged to conduct the at least one pulse of electric current incorporates at least one resistive load having a localized predetermined resistance and at least one coupling structure, such that a delivered portion of stored electric energy is locally resistively converted into a mechanical energy of motion during a time period shorter than a duration of time needed for heat diffusion out a volume in the proximity of the at least the fraction of stored information, transferred through the at least one coupling structure, and controllably applied upon the proximity of the at least the fraction of stored information on the least one secured microdevice, such that the at least the fraction of stored information has been obliterated during the controllable release.

10. The system of claim 9, wherein the least one coupling structure incorporate at least one layered portion arranged substantially in between the at least one resistive load and the at least the fraction of stored information.

11. The system of claim 10, wherein the at least one layered portion incorporates at least one dielectric membrane arranged to cover at least a portion of a substrate.

12. The system of claim 10, wherein the at least one layered portion has been arranged for substantially enhanced thermal conductivity.

13. The system of claim 10, wherein the at least one layered portion has been prearranged to have distributed mechanical properties such that the delivered portion of stored electric energy is locally resistively converted into a mechanical energy of motion, and is predominantly transferred to a predetermined fraction of stored information.

14. A system for prevention of tampering, unauthorized use, and unauthorized extraction of information from at least one secured microdevice, comprising: a control hardware arranged to generate a command to trigger a controlled obliteration of at least a fraction of stored information on the at least one secured microdevice; an obliteration driver arranged to store electric energy and to generate, when triggered by the control hardware, at least two distinct pulses of electric current a circuit arranged to conduct the at least two distinct pulses of electric current toward at least two resistive dissipative load structures arranged in a proximity of the at least the fraction of stored information on the at least one secured microdevice, and connected to controllably release delivered portions of stored electric energy in the proximity of the at least the fraction of stored information on the least one secured microdevice, such that the at least the fraction of stored information has been obliterated during the controllable release; wherein, the circuit arranged to conduct the at least two distinct pulses of electric current incorporates a plurality of resistive loads each having a localized predetermined resistance and at least one disconnecting element, such that the portion of stored electric energy, delivered by at least one pulse of electric current, is locally resistively converted into a mechanical energy of motion during a time period shorter than a duration of time needed for heat diffusion out of a volume in the proximity of the at least the fraction of stored information while switching the at least one disconnecting element into an open nonconductive state regarding any subsequent pulse of electric current.

15. The system of claim 14, wherein the obliteration driver arranged to store electric energy and to generate, when triggered by the control hardware, a predetermined number of distinct pulses of electric current.

16. The system of claim 14, wherein the circuit arranged to conduct the at least two distinct pulses of electric current incorporates a plurality of resistive loads arranged in a network of the plurality resistive loads and the at least one disconnecting element.

17. The system of claim 16, wherein the obliteration driver incorporates electric energy storage device and generates, when triggered by the control hardware, a predetermined number of distinct pulses of electric current.

18. The system of claim 15, wherein the at least two disconnecting elements, each of the at least two disconnecting elements having either at least one conductive state and at least one nonconductive state, are connected to at least one programmable switch such that a sequence of the predetermined number of distinct pulses of electric current drives a sequence of transitions between the at least one conductive state and the at least one nonconductive state of each of the at least two disconnecting elements.

19. The system of claim 14, wherein the at least one disconnecting element incorporate segments arranged to inhibit surface breakdowns and gliding discharges.

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