公开(公告)号：US20220333912A1

公开(公告)日：2022-10-20

申请号：US17856586

申请日：2022-07-01

Applicant: STMICROELECTRONICS, INC.

Inventor： Arnaud DELEULE ,  John E. KVAM ,  Kalyan-Kumar VADLAMUDI-REDDY

IPC: G01B11/02 ,  G01C3/02 ,  H04N5/232 ,  G06T7/521 ,  G01S17/00 ,  G01S17/89 ,  G06V40/16

Abstract: The present disclosure is directed to a system and method of controlling a facial recognition process by validating preconditions with a ranging sensor. The ranging sensor transmits a ranging signal that is reflected off of a user's face and received back at the ranging sensor. The received ranging signal can be used to determine distance between the user's face and the mobile device or to determine the reflectivity of the user's face. Comparing the distance to a range of distances corresponding to normal operation of the device or normal reflectivities associated with human skin tones can reduce the number of false positive activations of the facial recognition process. Furthermore, a multiple zone ranging sensor can produce a face depth map that can be compared to a stored face depth map or can produce a reflectivity map that can be compared to a stored face reflectivity map to further increase power efficiency and device security.

公开(公告)号：US20190212125A1

公开(公告)日：2019-07-11

申请号：US16224543

申请日：2018-12-18

Applicant: STMICROELECTRONICS, INC.

Inventor： Arnaud DELEULE ,  John E. KVAM ,  Kalyan-Kumar VADLAMUDI-REDDY

IPC: G01B11/02 ,  G06K9/00 ,  G06T7/521 ,  H04N5/232 ,  G01C3/02

CPC classification number: G01B11/026 ,  G01C3/02 ,  G06K9/00281 ,  G06K9/00288 ,  G06T7/521 ,  H04N5/232121

Abstract: The present disclosure is directed to a system and method of controlling a facial recognition process by validating preconditions with a ranging sensor. The ranging sensor transmits a ranging signal that is reflected off of a user's face and received back at the ranging sensor. The received ranging signal can be used to determine distance between the user's face and the mobile device or to determine the reflectivity of the user's face. Comparing the distance to a range of distances corresponding to normal operation of the device or normal reflectivities associated with human skin tones can reduce the number of false positive activations of the facial recognition process. Furthermore, a multiple zone ranging sensor can produce a face depth map that can be compared to a stored face depth map or can produce a reflectivity map that can be compared to a stored face reflectivity map to further increase power efficiency and device security.

公开(公告)号：US20230326239A1

公开(公告)日：2023-10-12

申请号：US18335046

申请日：2023-06-14

Applicant: STMICROELECTRONICS, INC.

Inventor： Xiaoyong YANG ,  Kalyan-Kumar VADLAMUDI-REDDY

IPC: G06V40/16 ,  G01B7/30 ,  G01C19/00 ,  G01S17/08 ,  G01S17/894 ,  G01B11/22 ,  G01P15/18 ,  G06F18/25 ,  G06F18/214

CPC classification number: G06V40/166 ,  G01B7/30 ,  G01C19/00 ,  G01S17/08 ,  G06F18/214 ,  G01B11/22 ,  G01P15/18 ,  G06V40/171 ,  G06F18/25 ,  G01S17/894

Abstract: An electronic device includes a depth sensor and an inertial measurement unit. The electronic device detects a presence of the user of the electronic device by analyzing a combination of inertial sensor signals from the inertial measurement unit and depth sensor signals from the depth sensor.

公开(公告)号：US20220067346A1

公开(公告)日：2022-03-03

申请号：US17006594

申请日：2020-08-28

Applicant: STMICROELECTRONICS, INC.

Inventor： Xiaoyong YANG ,  Kalyan-Kumar VADLAMUDI-REDDY

IPC: G06K9/00 ,  G06K9/62 ,  G01P15/18 ,  G01C19/00 ,  G01S17/08 ,  G01S17/894 ,  G01B11/22 ,  G01B7/30

Abstract: An electronic device includes a depth sensor and an inertial measurement unit. The electronic device detects a presence of the user of the electronic device by analyzing a combination of inertial sensor signals from the inertial measurement unit and depth sensor signals from the depth sensor.