公开(公告)号：US11755095B2

公开(公告)日：2023-09-12

申请号：US17379743

申请日：2021-07-19

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo Rivolta ,  Roberto Mura ,  Marco Bianco

IPC: G06F1/32 ,  G06F1/3231 ,  G01R29/12 ,  G01P15/14

CPC classification number: G06F1/3231 ,  G01P15/14 ,  G01R29/12

Abstract: The present disclosure is directed to a device configured to detect whether the device is in a bag or being taken out of the bag. The device determines whether the device is in a bag or being taken out of the bag based on motion measurements generated by a motion sensor and electrostatic charge measurements generated by an electrostatic charge sensor. By using both distance measurements and motion measurements, the device is able to detect whether the device is in the bag or being taken out of the bag with high efficiency, accuracy, and robustness.

公开(公告)号：US11516409B2

公开(公告)日：2022-11-29

申请号：US17527989

申请日：2021-11-16

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico Rizzardini ,  Lorenzo Bracco ,  Roberto Mura ,  Stefano Paolo Rivolta

IPC: H04N5/235

Abstract: A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.