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US 11,030,289 B2Granted
Human presence detection
AssigneeSTMicroelectronics S.r.l.
InventorsXiaoyong Yang, Sankalp Dayal
Life of this patent
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Abstract
A method includes sensing through time-of-flight measurements a distance of an object from an electronic device, sensing motion of the electronic device, sensing acoustic signals received by the electronic device, and detecting the presence of a human proximate the electronic device based on the sensed distance, motion and acoustic signals. Access to the electronic device is controlled based on whether a human is detected as being present.
Claims20
A method, comprising:
- sensing through time-of-flight measurements a distance of an object from an electronic device;
- sensing motion of the electronic device;
- sensing acoustic signals received by the electronic device;
- detecting presence of a human proximate the electronic device based on the sensed distance, motion and acoustic signals;
- determining a plurality of system states of the electronic device based on the sensed distance and motion, the plurality of system states including:
- a lid vertical state indicating whether a lid of the electronic device is vertical,
- a resting position state indicating whether the electronic device is resting on a lap,
- a moved state indicating whether a position of the electronic device has moved since last detection of human presence, and
- a vibration state indicating a reliability of sensed vibration data the last time human presence was detected;
- and
- controlling access to the electronic device based on the determined system states.
8 more elements
An electronic device, comprising:
- a time-of-flight sensor that in operation generates a distance signal indicating a distance of an object from the electronic device;
- a motion sensor that in operation generates a motion signal indicating motion of the electronic device;
- an audio sensor that in operation generates a sensed audio signal in response to acoustic signals received by the electronic device;
- and
- a processor coupled to the time-of-flight, motion and audio sensors that in operation processes the distance, motion, and sensed audio signals and controls access to the electronic device based on the processed distance, motion and sensed audio signals,
- wherein the processor is configured to determine a plurality of system states of the electronic device based on the distance signal and the motion signal, the plurality of system states including:
- a lid vertical state indicating whether a lid of the electronic device is vertical,
- a resting position state indicating whether the electronic device is resting on a lap,
- a moved state indicating whether a position of the electronic device has moved since last detection of human presence, and
- a vibration state indicating a reliability of sensed vibration data the last time human presence was detected.
7 more elements
An electronic device, comprising:
- a time-of-flight sensor configured to sense a distance of an object from the electronic device and to generate a distance signal indicating the sensed distance;
- a motion sensor configured to generate a motion signal indicating motion of the electronic device;
- an audio sensor configured to sense acoustic signals incident on the electronic device and to generate a sensed audio signal based on the acoustic signals;
- and
- a processor coupled to the time-of-flight, motion and audio sensors, the processor including a plurality of modules configured to process the distance, motion, and audio signals to detect whether a user is proximate the electronic device and to determine a plurality of system states indicating current and prior operating conditions of the electronic device, the processor further configured to control access to the electronic device based upon the determined system states and whether the user is detected proximate the electronic device,
- wherein the plurality of system states includes:
- a lid vertical state indicating whether a lid of the electronic device is vertical,
- a resting position state indicating whether the electronic device is resting on a lap,
- a moved state indicating whether a position of the electronic device has moved since last detection of human presence, and
- a vibration state indicating a reliability of sensed vibration data the last time human presence was detected.
7 more elements
Dependencies are inferred from the claim text.