公开(公告)号：US20210021752A1

公开(公告)日：2021-01-21

申请号：US16513712

申请日：2019-07-17

Applicant: PRIMESENSOR TECHNOLOGY INC.

Inventor： Wen-Han YAO

IPC: H04N5/235

Abstract: There is provided an image sensor for exposing a plurality of pixel rows within a frame period using a rolling shutter. The image sensor includes a processor for calculating bright-dark distribution patterns of image frames. The processor further adjusts the frame period to be substantially identical to a predetermined period by changing a total number of exposed line times within the frame period when a difference between the bright-dark distribution patterns of two image frames is larger than a predetermined threshold.

公开(公告)号：US10757358B1

公开(公告)日：2020-08-25

申请号：US16431788

申请日：2019-06-05

Applicant: PRIMESENSOR TECHNOLOGY INC. ,  PixArt Imaging Inc.

Inventor： Chih-Huan Wu ,  Wen-Cheng Yen

IPC: H04N9/80 ,  H04N5/77 ,  G11B27/34 ,  H04N5/235

Abstract: There is provided a photographing device having two output interfaces that respectively used to output a first image frame and a second image frame. The first image frame is provided to a processor of the photographing device to perform the feature extraction and tag the second image frame accordingly. The tagged second image frame is for the image recording of an external back end.

公开(公告)号：US20210027590A1

公开(公告)日：2021-01-28

申请号：US16521535

申请日：2019-07-24

Applicant: PixArt Imaging Inc. ,  PRIMESENSOR TECHNOLOGY INC.

Inventor： Han-Chang Lin ,  Shiue-Shin Liu ,  Shuen-Yin Bai

IPC: G08B13/196 ,  G08B21/18 ,  G08B13/19 ,  G06K9/00 ,  G06T7/194 ,  H04N5/232

Abstract: A smart motion detection device includes an image sensor, an infrared sensor and a processor. The image sensor captures a monitoring image. The infrared sensor detects a thermal motion condition and provides an alarm signal accordingly. The processor executes an image recording mode of the image sensor only according to the alarm signal when an image quality of the monitoring image is unacceptable.

公开(公告)号：US10805579B2

公开(公告)日：2020-10-13

申请号：US16261569

申请日：2019-01-30

Applicant: PRIMESENSOR TECHNOLOGY INC.

Inventor： Wen-Han Yao ,  Chih-Huan Wu

IPC: H04N7/18 ,  G06T7/246 ,  G06T7/00 ,  G06T7/80 ,  H04N5/235

Abstract: A motion detection method utilized for a motion sensor includes: capturing a monitoring image; entering a recording mode when one intensity change value between the monitoring image and a pre-stored background image is higher than a first threshold and a trigger signal is received from an auxiliary sensor; and entering the recording mode when the intensity change value is higher than a second threshold before the trigger signal is received; wherein the second threshold is higher than the first threshold.

公开(公告)号：US10750099B2

公开(公告)日：2020-08-18

申请号：US16163525

申请日：2018-10-17

Applicant: PRIMESENSOR TECHNOLOGY INC.

Inventor： Wen-Han Yao ,  Chih-Huan Wu

IPC: H04N5/243 ,  H04N5/235

Abstract: An image sensing method, comprising: (a) controlling an image sensor to apply a first frame rate to sense a first frame during a first frame period; (b) determining exposure variation in the first frame period; and (c) during one of the first frame period and a second frame period following the first frame period, switching the image sensor to apply a second frame rate different from the first frame rate to sense at least one third frame, when the step (b) determines the exposure variation exceeds a threshold level. A related image sensing system is also disclosed. Via such image sensing method, the frame switch delay of a conventional frame switch can be reduced.

公开(公告)号：US10721427B2

公开(公告)日：2020-07-21

申请号：US16018015

申请日：2018-06-25

Applicant: PrimeSensor Technology Inc.

Inventor： Shiue-Shin Liu

IPC: H04N5/378 ,  H04N5/369 ,  H03K4/08 ,  H03M1/56

Abstract: The present invention discloses an image sensor circuit and a ramp signal generator thereof. The image sensor circuit includes: an active pixel sensor (APS) array which includes plural pixel circuits arranged in an array of columns and rows; plural slope analog-to-digital converter (ADC), wherein each of the slope ADC is coupled to the corresponding column, and generates a digital sampling signal according to a ramp signal together with a pixel signal including a reset signal and a image signal which are generated by the pixel circuit located in the selected row and in the column corresponding to the slope ADC; and the ramp signal generator, which generates the ramp signal, wherein the ramp signal generator includes an active integrator, and the active integrator generates the ramp signal by charging an integration capacitor with a gain current.