Deactivation of integrated circuits
a technology of integrated circuits and integrated circuits, applied in the direction of mechanical actuation of burglar alarms, pulse techniques, instruments, etc., can solve the problems of total disablement of integrated circuits, and inability to restore integrated circuits to independent functional states in initial sta
Inactive Publication Date: 2011-05-19
ENSURGE MICROPOWER ASA
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- Application Information
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Problems solved by technology
After an integrated circuit has been programmed, and subsequently disabled as described herein, it is not possible to restore the integrated circuit to an independently functional state using methods known in the art.
Altering, erasing, and / or reprogramming the erasable non-volatile memory results in total disablement of the integrated circuit.
Thus, an integrated circuit is not independently functional in its initial state.
Method used
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Reference will now be made in detail to the preferred embodiments of the invention. While the invention will be described in conjunction with the preferred embodiments, it will be understood that they are not intended to limit the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents that may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be readily apparent to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present invention. Furthermore, it should be unde...
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Integrated circuits and methods of permanently disabling integrated circuits are disclosed. An integrated circuit having an erasable non-volatile memory adapted to store an activation code and logic to disable the integrated circuit when the code in the erasable non-volatile memory has been altered or erased after it has been separated from a substrate, is placed into an electromagnetic field of sufficient power to erase or reprogram the erasable non-volatile memory. The entire integrated circuit is permanently disabled by erasing, altering, or reprogramming the erasable non-volatile memory. In preferred embodiments, the integrated circuit comprises a non-erasable non-volatile memory storing the activation code, and circuitry adapted to permanently disable the integrated circuit when the code in the erasable non-volatile memory does not match the activation code in the non-erasable non-volatile memory. Erasing, altering, or reprogramming the erasable non-volatile memory results in a mismatch of the non-volatile memories, which permanently deactivates the integrated circuit.
Description
FIELD OF THE INVENTIONThe present invention generally relates to the field of integrated circuits and methods of manufacturing the same. More specifically, embodiments of the present invention pertain to integrated circuits and methods of disabling such integrated circuits.BACKGROUNDAspects of the present invention relate to integrated circuits and methods of deactivating the same. The present invention addresses the challenges associated with protecting personal privacy as RFID technology is used to tag individual products that are purchased and taken home by private citizens. For example, RFID systems are becoming widely used in the manufacturing and retail industry. Soon, an RFID tag is expected to be embedded in most retail products that are purchased. Therefore, the public is becoming concerned about the loss of personal privacy that will occur if these tags are used to track a person's location and / or personal habits. Accordingly, as the use of RFID technology becomes more wid...
Claims
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IPC IPC(8): H03K19/00
CPCG06F21/35G06F21/6209G06F21/77H03K19/173G06F2221/2147G06K19/07309G06F2221/2143
Inventor STEWART, ROGER G.
Owner ENSURGE MICROPOWER ASA