公开(公告)号：US20190159732A1

公开(公告)日：2019-05-30

申请号：US15826720

申请日：2017-11-30

Applicant: PixArt Imaging Inc.

Inventor： Hsiu-Ling Yeh ,  Yung-Chang Lin ,  Shin-Lin Wang

IPC: A61B5/00 ,  A61B5/024

Abstract: A wearable device includes: a light source, a sensor and a processor. The light source selectively operates in an illuminating mode or a non-illuminating mode, and generates an auxiliary light passing through a physical body in the illuminating mode. The sensor captures detecting images from the physical body, wherein the detecting images include at least one illuminating image captured while the light source is in the illuminating mode, at least one pre-illuminating image captured before the illuminating image is captured while the light source is in the non-illuminating mode, and at least one post-illuminating image captured after the illuminating image is captured while the light source is in the non-illuminating mode. The processor generates physiological information of the physical body according to the illuminating image, the pre-illuminating image and the post-illuminating image.

公开(公告)号：US20240426991A1

公开(公告)日：2024-12-26

申请号：US18823748

申请日：2024-09-04

Applicant: PixArt Imaging Inc.

Inventor： Tso-Sheng Tsai ,  Yueh-Lin Chung ,  Shin-Lin Wang

IPC: G01S7/497 ,  G01S7/481 ,  G01S7/4865 ,  G01S17/10

Abstract: There is provided a time of flight sensor including a light source, a first pixel, a second pixel and a processor. The first pixel generates a first output signal without receiving reflected light from an external object illuminated by the light source. The second pixel generates a second output signal by receiving the reflected light from the external object illuminated by the light source. The processor calculates deviation compensation and deviation correction associated with temperature variation according to the first output signal to accordingly calibrate a distance calculated according to the second output signal.

公开(公告)号：US11644554B2

公开(公告)日：2023-05-09

申请号：US16936777

申请日：2020-07-23

Applicant: PixArt Imaging Inc.

Inventor： Tso-Sheng Tsai ,  Yueh-Lin Chung ,  Shin-Lin Wang

IPC: G01S7/48 ,  G01S7/497 ,  G01S17/10 ,  G01S7/481 ,  G01S7/4865

CPC classification number: G01S7/497 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4865 ,  G01S17/10

Abstract: There is provided a time of flight sensor including a light source, a first pixel, a second pixel and a processor. The first pixel generates a first output signal without receiving reflected light from an external object illuminated by the light source. The second pixel generates a second output signal by receiving the reflected light from the external object illuminated by the light source. The processor calculates deviation compensation and deviation correction associated with temperature variation according to the first output signal to accordingly calibrate a distance calculated according to the second output signal.

公开(公告)号：US12111426B2

公开(公告)日：2024-10-08

申请号：US18129078

申请日：2023-03-31

Applicant: PIXART IMAGING INC.

Inventor： Tso-Sheng Tsai ,  Yueh-Lin Chung ,  Shin-Lin Wang

IPC: G01S7/00 ,  G01S7/481 ,  G01S7/4865 ,  G01S7/497 ,  G01S17/10

CPC classification number: G01S7/497 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4865 ,  G01S17/10

Abstract: There is provided a time of flight sensor including a light source, a first pixel, a second pixel and a processor. The first pixel generates a first output signal without receiving reflected light from an external object illuminated by the light source. The second pixel generates a second output signal by receiving the reflected light from the external object illuminated by the light source. The processor calculates deviation compensation and deviation correction associated with temperature variation according to the first output signal to accordingly calibrate a distance calculated according to the second output signal.