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US 11,694,454 B2Granted
Information processing device and driving method of information processing device
AssigneeJapan Display Inc.
InventorMasataka Ikeda
Life of this patent
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Abstract
An information processing device comprises an electronic device, an averaging circuit acquiring output signals from the electronic device multiple times in a predetermined period and averaging the signals acquired multiple times, a memory circuit storing an averaged signal averaged by the averaging circuit and a PUF-ID extraction circuit generating a unique identifier based on the averaged signal.
Claims9
An information processing device comprising:
- an electronic device;
- an averaging circuit acquiring output signals from the electronic device multiple times in a predetermined period and averaging the signals acquired multiple times;
- a memory circuit storing an averaged signal averaged by the averaging circuit;
- a PUF-ID extraction circuit generating a unique identifier based on the averaged signal;
- a controller configured to control a normal operation based on the averaged signal;
- and
- a mode selection circuit,
- wherein
- the mode selection circuit selects one of a PUF operation mode in which the PUF-ID extraction circuit is operated, and a normal operation mode in which the controller is operated, and
- the memory circuit is electrically connected to the controller or the PUF-ID extraction circuit.
7 more elements
A driving method of an information processing device comprising:
- acquiring output signals multiple times in a predetermined period;
- averaging the output signals acquired multiple times;
- generating a unique identifier based on an averaged signal;
- averaging processing a plurality of averaged signals acquired in each of a plurality of predetermined periods;
- generating an averaged processing signal;
- judging whether a predetermined bit of the averaged processing signal is an even number or an odd number;
- and
- generating the unique identifier based on a judgment result.
5 more elements
An information processing device comprising:
- a touch panel;
- a PUF-ID extraction circuit generating a unique identifier based on a output signal from the touch panel;
- an averaging circuit acquiring output signals from the touch panel multiple times in a predetermined period and averaging the signals acquired multiple times;
- a memory circuit storing an averaged signal averaged by the averaging circuit;
- a PUF-ID extraction circuit generating a unique identifier based on the averaged signal;
- and
- a mode selection circuit;
- wherein
- the touch panel includes touch electrodes,
- the output signal from the touch panel is a digitally converted signal of a capacitance of the touch electrodes when not touched,
- the mode selection circuit selects one of a PUF operation mode in which the PUF-ID extraction circuit is operated, and a normal operation mode, and
- in the normal operation mode, the touch position is detected based on a signal of a capacitance change of the touch electrode.
9 more elements
Dependencies are inferred from the claim text.