Image sensing method and image sensing system

    公开(公告)号:US10750099B2

    公开(公告)日:2020-08-18

    申请号:US16163525

    申请日:2018-10-17

    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.

    IMAGE SENSING METHOD AND IMAGE SENSING SYSTEM

    公开(公告)号:US20200128190A1

    公开(公告)日:2020-04-23

    申请号:US16163525

    申请日:2018-10-17

    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.

    Analog operation circuit for operating pulse width signals outputted from pixel circuit

    公开(公告)号:US11546540B2

    公开(公告)日:2023-01-03

    申请号:US17672028

    申请日:2022-02-15

    Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.

    Pixel circuit outputting pulse width signal and optical sensor using the same

    公开(公告)号:US12058467B2

    公开(公告)日:2024-08-06

    申请号:US18244296

    申请日:2023-09-11

    CPC classification number: H04N25/772 H01L27/14643

    Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.

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