Tamper Resistant Circuitry and Portable Electronic Devices
First Claim
1. Tamper-resistant circuitry for inclusion in an electronic device, the tamper-resistant circuitry comprising:
- wireless receiving circuitry operable to receive an incoming communication;
a first circuit operable to change a signal state in response to the incoming communication; and
a verification sensor circuit coupled to the first circuit and operable to detect a circuit condition indicative of unauthorized use and upon detection of the circuit condition to prevent the change of the signal state.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable electronic device. Tamper-resistant circuitry for inclusion in an electronic device. The tamper-resistant circuitry comprises wireless receiving circuitry operable to receive an incoming communication. The tamper-resistant circuitry also comprises a first circuit operable to change a signal state in response to the incoming communication. The tamper-resistant circuitry also comprises a verification sensor circuit coupled to the first circuit. The sensor is operable to detect a circuit condition indicative of unauthorized use and upon detection of the circuit condition to prevent the change of the signal state.
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Citations
63 Claims
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1. Tamper-resistant circuitry for inclusion in an electronic device, the tamper-resistant circuitry comprising:
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wireless receiving circuitry operable to receive an incoming communication; a first circuit operable to change a signal state in response to the incoming communication; and a verification sensor circuit coupled to the first circuit and operable to detect a circuit condition indicative of unauthorized use and upon detection of the circuit condition to prevent the change of the signal state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. Tamper-resistant circuitry for inclusion in an electronic device, the tamper-resistant circuitry comprising:
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a first circuit operable to change a signal state in response to an event; and a verification sensor circuit coupled to the first circuit, the verification sensor circuit having a configurable parameter range and operable to detect a circuit condition outside the configurable parameter range and upon detection of the circuit condition outside the configurable parameter range to prevent the change of the signal state. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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41. Tamper-resistant circuitry for inclusion in an electronic device, the tamper-resistant circuitry comprising:
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a display operable to provide illumination; an optical detector element; and a circuit for disabling the display from providing illumination in response to determining that the optical detector element detects an insufficient amount of light. - View Dependent Claims (42, 43, 44, 45)
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46. A portable electronic device, comprising:
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wireless receiving circuitry operable to receive an incoming communication; a first circuit operable to change a signal state in response to the incoming communication; and a verification sensor circuit coupled to the first circuit and operable to detect a circuit condition indicative of unauthorized use and upon detection of the circuit condition to prevent the change of the signal state. - View Dependent Claims (47)
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48. A portable electronic device, comprising:
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circuitry for receiving power; a first circuit operable from the power and operable to change a signal state in response to an event; and a verification sensor circuit coupled to the first circuit and operable to access a parameter range and to detect a circuit condition outside the parameter range and upon detection of the circuit condition to prevent the change of the signal state in response to the event. - View Dependent Claims (49)
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50. A method of reducing an opportunity for tampering of circuitry in an electronic device, comprising:
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receiving an incoming wireless communication for provoking a change of a signal state by a circuit in response to the incoming wireless communication; and detecting a circuit condition indicative of unauthorized use and upon detection of the circuit condition preventing the change of the signal state by the circuit. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58)
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59. A method of reducing an opportunity for tampering of a circuit in an electronic device, comprising:
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in response to an event, calling upon a circuit to change a signal state; and accessing a parameter range; and detecting whether a circuit condition is outside the parameter range and, if outside, then preventing the change of the signal state. - View Dependent Claims (60, 61, 62, 63)
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Specification