Device for automatic detection of states of motion and rest, and portable electronic apparatus incorporating it
First Claim
1. A device for automatic detection of states of motion and rest, comprising:
- a first inertial sensor having a first preferential detection axis;
a converter coupled to said first inertial sensor and supplying a first signal correlated to forces acting on said first inertial sensor according to said first preferential detection axis;
a first processing stage structured to process said first signal and supply a second signal correlated to a dynamic component of said first signal; and
a first threshold comparator supplying a pulse when said second signal exceeds a pre-determined threshold.
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Accused Products
Abstract
A device for automatic detection of states of motion and rest includes at least one inertial sensor, having at least one preferential detection axis, and a converter, which is coupled to the inertial sensor and supplies a first signal correlated to forces acting on the first inertial sensor according to the preferential detection axis; the device further includes at least one processing stage for processing the first signal, which supplies a second signal correlated to a dynamic component of the first signal, and at least one threshold comparator, which supplies a pulse when the second signal exceeds a pre-determined threshold.
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Citations
23 Claims
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1. A device for automatic detection of states of motion and rest, comprising:
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a first inertial sensor having a first preferential detection axis;
a converter coupled to said first inertial sensor and supplying a first signal correlated to forces acting on said first inertial sensor according to said first preferential detection axis;
a first processing stage structured to process said first signal and supply a second signal correlated to a dynamic component of said first signal; and
a first threshold comparator supplying a pulse when said second signal exceeds a pre-determined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19)
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11. A portable electronic apparatus, comprising:
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a supply source;
a plurality of user devices alternatively connected to said supply source in a first operative state, and disconnected from said supply source in a second operative state; and
deactivation means connected to said user devices for setting said user devices in said second operative state;
activation means for setting the user devices in the first operative state, said activation means including;
a first inertial sensor having a preferential detection axis;
a converter coupled to said first inertial sensor and supplying a first signal correlated to forces acting on said first inertial sensor according to said preferential detection axis;
a first processing stage structured to process said first signal and supply a second signal correlated to a dynamic component of said first signal; and
a first threshold comparator supplying an activation pulse when said second signal exceeds a pre-determined threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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20. A method for automatic detection of motion of a portable electronic device, comprising:
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sensing motion of the device along a first preferential detection axis;
supplying a first signal correlated to forces acting on the device according to the preferential detection axis;
processing the first signal and supplying a second signal correlated to a dynamic component of the first signal; and
supplying an activation pulse when the second signal exceeds a first pre-determined threshold. - View Dependent Claims (21, 22, 23)
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Specification