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US 8,046,634 B2Granted
Integrated circuit card with condition detector
AssigneeSamsung Electronics Co., Ltd.
InventorsSun-Kwon Kim, Byeong-Hoon Lee, Ki-Hong Kim
Life of this patent
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Abstract
An integrated circuit card includes a central processing unit, a memory and an abnormal condition detector. The memory stores data to be processed by the central processing unit. The abnormal condition detector detects whether at least one operating condition of the integrated circuit card is within one of a suspend region or a reset region. The abnormal condition detector controls an operation of the central processing unit in accordance with the detection.
Claims13
An integrated circuit card comprising:
- a central processing unit;
- a memory for storing data to be processed by the central processing unit;
- and
- an abnormal condition detector for detecting whether at least one operating condition of the integrated circuit card is within one of a suspend region or a reset region
- wherein the abnormal condition detector causes the operation of the central processing unit to be suspended in a suspend state when the at least one operating condition is in the suspend region, and
- wherein the abnormal condition detector causes the operation of the central processing unit to resume when the at least one operating condition is stabilized in a normal region after being in the suspend region, and causes the central processing unit to initialize when the at least one operating condition continues in the suspend state for a predetermined period of time.
3 more elements
An integrated circuit card comprising:
- a central processing unit;
- a memory for storing data to be processed by the central processing unit;
- an external condition detecting block for detecting whether an external operating condition is within one of a suspend region or a reset region, and for outputting corresponding suspend information or reset information based on the external condition detection;
- an internal condition detecting block for detecting whether an internal operating condition is in a suspend region or a reset region, and for outputting corresponding suspend information or reset information based on the internal condition detection;
- and
- a control signal generator for selectively activating a suspend detection signal in response to the suspend information from at least one of the external and internal condition detectors and a reset detection signal in response to the reset information output from at least one of the external and internal condition detectors,
- wherein an operation of the central processing unit is suspended in response to activation of the suspend detection signal and initialized in response to activation of the reset detection signal, and
- wherein the external condition detecting block comprises:
- an external voltage detector for activating one of a first suspend signal as the suspend information or a first reset signal as the reset information based on whether an external power source voltage is in an external voltage suspend region or an external voltage reset region;
- a temperature detector for activating one of a second suspend signal as the suspend information or a second reset signal as the reset information based on whether a temperature is in a temperature suspend region or a temperature reset region;
- and
- a frequency detector for activating a third suspend signal as the suspend information or a third reset signal as the reset information based on whether a frequency of a clock signal is in a frequency suspend region or a frequency reset region;
- and
- wherein the internal condition detecting block comprises:
- an internal voltage detector activating a fourth suspend signal as the suspend information or a fourth reset signal as the reset information based on whether an internal power source voltage is in an internal voltage suspend region or an internal voltage reset state.
12 more elements
Dependencies are inferred from the claim text.