Granted Patent B2

US 12,613,564 · App. 18/478,508 · Granted Apr 28, 2026

Inventors: Lorenzo Francesco Gualniera (Carugate, IT); Stefano Paolo Rivolta (Desio, IT); Piergiorgio Arrigoni (Domodossola, IT); Marco Bianco (Cesano Boscone, IT)

Assignee: STMicroelectronics International N.V.

G06F1/26G06F1/3206G01C22/00G01C23/00G06F9/4418G06F11/3476

Abstract

Claims (49)

1 . A device, comprising:

a motion sensor configured to generate motion measurements; and

a processor coupled to the motion sensor, the processor configured to:

detect a plurality of activity states based on the motion measurements, the detected plurality of activity states including a stationary state in which the device has a determined amount of movement, a walking state in which a user is walking with the device, and a transport state in which the user is traveling in a vehicle with the device;

generate a current sequence of activity states based on the detected plurality of activity states;

compare the current sequence of activity states to a database sequence of activity states stored in a database; and

set the device to an ON state in a case where the current sequence of activity states corresponds to the database sequence of activity states.

2 . The device of claim 1 wherein the database sequence of activity states is a sequence that terminates with the user interacting with the device.

3 . The device of claim 1 wherein

the database sequence of activity states is a sequence that starts upon detection of a transition from a super still state in which the device remains still to another activity state after the super still state has been detected consecutively for a determined amount of time, and

the database sequence of activity states is a sequence that terminates with the user interacting with the device.

4 . The device of claim 1 wherein the processor is configured to determine the current sequence of activity states corresponds to the database sequence of activity states based on a duration distance, a unique distance, or a histogram distance.

5 . The device of claim 1 wherein the processor is configured to determine the current sequence of activity states corresponds to the database sequence of activity states in a case where a duration distance is below a first threshold value, a unique distance is below a second threshold value, and a histogram distance is below a third threshold value.

6 . The device of claim 1 wherein

the detected plurality of activity states includes a super still state in which the device remains still, and

the current sequence of activity states is a sequence that starts upon detection of a transition from the super still state to another activity state after the super still state has been detected consecutively for a determined amount of time.

7 . The device of claim 1 wherein the processor is configured to:

store the current sequence of activity states in the database in a case where the user interacts with the device.

8 . The device of claim 1 wherein the current sequence of activity states are the detected plurality of activity states arranged in sequential order.

9 . A method, comprising:

generating motion measurements of a device;

detecting a plurality of activity states based on the motion measurements, the detected plurality of activity states including a stationary state in which the device has a determined amount of movement, a walking state in which a user is walking with the device, and a transport state in which the user is traveling in a vehicle with the device;

generating a current sequence of activity states based on the detected plurality of activity states;

comparing the current sequence of activity states to a database sequence of activity states stored in a database; and

setting the device to an ON state in a case where the current sequence of activity states corresponds to the database sequence of activity states.

10 . The method of claim 9 , further comprising:

detecting a transition from a super still state in which the device remains still;

starting generation of the database sequence of activity states in response to detecting the transition from the super still state after the super still state has been detected consecutively for a determined amount of time;

detecting the user interacting with the device;

terminating the generation of the database sequence of activity states in response to detecting the user interacting with the device; and

storing the database sequence of activity states in the database in response to terminating the generation of the database sequence of activity states.

11 . The method of claim 9 , further comprising:

determining the current sequence of activity states corresponds to the database sequence of activity states based on a duration distance, a unique distance, or a histogram distance.

12 . The method of claim 9 , further comprising:

determining the current sequence of activity states corresponds to the database sequence of activity states in a case where a duration distance is below a first threshold value, a unique distance is below a second threshold value, and a histogram distance is below a third threshold value.

13 . The method of claim 9 wherein

the detected plurality of activity states includes a super still state in which the device remains still, and

the method further includes generating the current sequence of activity states in response to detecting a transition from the super still state to another activity state after the super still state has been detected consecutively for a determined amount of time.

14 . The method of claim 9 , further comprising:

storing the current sequence of activity states in the database in case where the user interacts with the device.

15 . A method, comprising:

generating motion measurements of a device;

detecting a plurality of activity states of the device based on the motion measurements, the detected plurality of activity states including a super still state in which the device remains still, a stationary state in which the device has a determined amount of movement, a walking state in which a user is walking with the device, and a transport state in which the user is traveling in a vehicle with the device;

generating, in response to detecting a transition from the super still state to another activity state after the super still state has been detected consecutively for a determined amount of time, a current sequence of activity states that includes activity states of the detected plurality of activity states;

determining whether or not the current sequence of activity states corresponds to a database sequence of activity states that terminates with the user interacting with the device;

setting the device to an ON state in a case where the current sequence of activity states corresponds to the database sequence of activity states; and

determining whether or not the current sequence of activity states corresponds to another database sequence of activity states that terminated with the user interacting with the device in a case where the current sequence of activity states does not correspond to the database sequence of activity states.

16 . The method of claim 15 , further comprising:

storing the current sequence of activity states in a database in case where the user interacts with the device.

Assignments (2)

Continuity (1)

References Cited (15)