公开(公告)号：US20240054755A1

公开(公告)日：2024-02-15

申请号：US18364871

申请日：2023-08-03

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Genshiro KAWACHI ,  Hiroshi HAGA ,  Feng LU ,  QiJun YAO ,  Haochi YU

IPC: G06V10/60 ,  G06V10/141 ,  G06V10/75

CPC classification number: G06V10/60 ,  G06V10/141 ,  G06V10/758

Abstract: A sensor device includes a plurality of pixels and a controller configured to correct measurement signals of the plurality of pixels. Each of the plurality of pixels includes a photodetector and a pixel circuit configured to output a signal from the photodetector. The controller is configured to acquire an unknown measured signal from one of the plurality of pixels, and correct the unknown measured signal of the one pixel with a correction coefficient which is based on ratios between values obtained from measured signals of the one pixel under a plurality of reference lights having different intensities and statistic values obtained from the values obtained from the measured signals of the plurality of pixels under a plurality of reference lights having different intensities.

公开(公告)号：US20230386246A1

公开(公告)日：2023-11-30

申请号：US18322343

申请日：2023-05-23

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Hiroshi HAGA ,  Shin TAKEUCHI ,  Kenji SERA ,  Kenichi HAYASHI ,  Feng LU ,  Haochi YU ,  QiJun YAO

IPC: G06V40/13

CPC classification number: G06V40/1306 ,  G06V40/1365

Abstract: An ultrasonic sensor device includes a plurality of pixels each including an ultrasonic transducer, and a control circuit configured to control the plurality of pixels. Each of the plurality of pixels is configured to hold a signal received by the ultrasonic transducer therein and send the signal to the control circuit as a response signal. The control circuit is configured to acquire an excitation response signal, which is a response signal sent from a pixel after the ultrasonic transducer therein is excited, acquire a non-excitation response signal, which is a response signal sent from a pixel when the ultrasonic transducer therein is not excited, and correct the excitation response signal based on the non-excitation response signal.