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    SURGE CURRENT COMPENSATING CIRCUIT AND COMPARATOR MODULE
    1.
    发明申请
    SURGE CURRENT COMPENSATING CIRCUIT AND COMPARATOR MODULE 有权
    浪涌电流补偿电路和比较器模块

    公开(公告)号：US20160190910A1

    公开(公告)日：2016-06-30

    申请号：US14739259

    申请日：2015-06-15

    Applicant: PIXART IMAGING INC.

    Inventor： HAN-CHI LIU

    IPC: H02M1/32

    CPC classification number: G05F1/56 ,  H02H9/025 ,  H02M2003/1566

    Abstract: A surge current compensating circuit has a compensating current generation unit and a bias unit, for compensating a surge current drawn from a supply power after an output signal of a specific circuit transits. The compensating current generation unit electrically coupled to the output stage of the specific circuit draws a compensating current form the supply power according to the output signal. The compensating current substantially equals to the surge current, and a summation of a current flowing through the output stage of the specific circuit and the compensating current is substantially unchanged regardless whether the output signal transits or not. The bias unit electrically coupled to the compensating current generation unit provides a bias to the compensating current generation unit to receive the compensating current passed through the compensating current generation unit or output the compensating current to the compensating current generation unit.

    Abstract translation: 浪涌电流补偿电路具有补偿电流产生单元和偏置单元，用于在特定电路的输出信号转换之后补偿从电源引起的浪涌电流。 电耦合到特定电路的输出级的补偿电流产生单元根据输出信号从供电功率中提取补偿电流。 补偿电流基本上等于浪涌电流，并且流过特定电路的输出级的电流和补偿电流的总和基本上不变，无论输出信号是否转换。 电耦合到补偿电流产生单元的偏置单元向补偿电流产生单元提供偏置，以接收通过补偿电流产生单元的补偿电流或将补偿电流输出到补偿电流产生单元。

    ANALOG OPERATION CIRCUIT FOR PROCESSING PIXEL DATA IN ANALOG PHASE
    3.
    发明公开
    ANALOG OPERATION CIRCUIT FOR PROCESSING PIXEL DATA IN ANALOG PHASE 审中-公开

    公开(公告)号：US20240340553A1

    公开(公告)日：2024-10-10

    申请号：US18747498

    申请日：2024-06-19

    Applicant: PixArt Imaging Inc.

    Inventor： REN-CHIEH LIU ,  CHIH-HUAN WU ,  YI-HSIEN KO ,  HAN-CHI LIU

    IPC: H04N25/772 ,  H01L27/146

    CPC classification number: H04N25/772 ,  H01L27/14643

    Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first circuit, a second circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first circuit. Within a second interval, the photodiode detects second light energy to be stored in the second circuit. Within an operation interval, the first circuit outputs a first detection signal according to the first light energy and outputs a second detection signal 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
    4.
    发明公开
    PIXEL CIRCUIT OUTPUTTING PULSE WIDTH SIGNAL AND OPTICAL SENSOR USING THE SAME 审中-公开

    公开(公告)号：US20230421924A1

    公开(公告)日：2023-12-28

    申请号：US18244296

    申请日：2023-09-11

    Applicant: PixArt Imaging Inc.

    Inventor： REN-CHIEH LIU ,  CHIH-HUAN WU ,  YI-HSIEN KO ,  HAN-CHI LIU

    IPC: H04N25/772 ,  H01L27/146

    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.

    ANALOG OPERATION CIRCUIT FOR OPERATING PULSE WIDTH SIGNALS OUTPUTTED FROM PIXEL CIRCUIT
    5.
    发明申请
    ANALOG OPERATION CIRCUIT FOR OPERATING PULSE WIDTH SIGNALS OUTPUTTED FROM PIXEL CIRCUIT 有权

    公开(公告)号：US20220174236A1

    公开(公告)日：2022-06-02

    申请号：US17672028

    申请日：2022-02-15

    Applicant: PixArt Imaging Inc.

    Inventor： REN-CHIEH LIU ,  CHIH-HUAN WU ,  YI-HSIEN KO ,  HAN-CHI LIU

    IPC: H04N5/3745 ,  H01L27/146

    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 TRANSFER RATE BOOSTING DEVICE
    7.
    发明申请
    PIXEL TRANSFER RATE BOOSTING DEVICE 审中-公开

    公开(公告)号：US20170356798A1

    公开(公告)日：2017-12-14

    申请号：US15687772

    申请日：2017-08-28

    Applicant: PIXART IMAGING INC.

    Inventor： WOOI-KIP LIM ,  HAN-CHI LIU

    IPC: G01J1/46 ,  G06F3/0354 ,  G06F3/038

    CPC classification number: G01J1/46 ,  G05F1/56 ,  G06F3/03543 ,  G06F3/0383 ,  H02M2003/1566 ,  H04N5/3559 ,  H04N5/359

    Abstract: A device, for pixel transfer rate boosting, is provided and includes an image sensing array having a plurality of pixel units, in which each of the plurality of pixel units is configured to generate a pixel signal when receiving an electromagnetic energy, a signal buffer circuit, electrically coupled with the image sensing array to receive the pixel signals, a switch circuit electrically coupled with the signal buffer circuit, a capacitor having a first terminal and a second terminal, in which the first terminal electrically couples with the switch circuit and the second terminal connects to a ground, a comparator, electrically coupled with the switch circuit, and a pull-down unit, electrically coupled with the first terminal of the capacitor and the switch circuit. After the switch circuit is turned on, the pull-down unit pulls the plurality of pixel output signals down.

    TRIGGER CIRCUIT
    9.
    发明申请
    TRIGGER CIRCUIT 审中-公开

    公开(公告)号：US20180351552A1

    公开(公告)日：2018-12-06

    申请号：US15612729

    申请日：2017-06-02

    Applicant: PIXART IMAGING INC.

    Inventor： PENG-SHENG CHEN ,  JUI-TE CHIU ,  HAN-CHI LIU

    IPC: H03K17/967 ,  H01H13/70 ,  H03K17/96 ,  G06F3/033

    Abstract: The present disclosure illustrates a trigger circuit applied to an electronic apparatus having a plurality of triggers, which includes a trigger switch and a trigger network. The trigger switch, corresponding to one of the plurality of triggers, has a first end and a second end, in which the first end of the trigger switch is connected with a pad, and the second end of the trigger switch is connected with a voltage source having a first voltage value. Further, the trigger network, corresponding to a rest of the plurality of triggers, has at least one trigger sub-circuit electrically connected with the pad, in which the trigger network has an impedance value. When the trigger switch is triggered, due to an impedance value of the trigger network, the first voltage value will be detected at the pad.

    SURGE CURRENT COMPENSATING CIRCUIT AND COMPARATOR MODULE
    10.
    发明申请
    SURGE CURRENT COMPENSATING CIRCUIT AND COMPARATOR MODULE 有权

    公开(公告)号：US20170271976A1

    公开(公告)日：2017-09-21

    申请号：US15606453

    申请日：2017-05-26

    Applicant: PIXART IMAGING INC.

    Inventor： CHAO-CHI LEE ,  HAN-CHI LIU

    IPC: H02M1/32 ,  H02M1/08

    CPC classification number: H02M1/32 ,  G05F1/56 ,  H02H9/02 ,  H02M1/083 ,  H02M3/00 ,  H02M3/155 ,  H02M2001/0045 ,  H02M2003/1566

    Abstract: A surge current compensating circuit has a compensating current generation unit, a bias unit, and a switch unit, for compensating a surge current drawn from a supply power after an output signal of a specific circuit transits. The compensating current generation unit is electrically coupled to the output stage of the specific circuit. The bias unit is electrically coupled to the compensating current generation unit through the switch unit. Before the output signal transits, the switch unit is disabled and the compensating current generation unit is enabled, so as to draw the compensating current from the supply power. After the output signal transits, the switch unit is enabled and the compensating current generation unit is disabled, such that the compensating current is not drawn from the supply power.

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