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公开(公告)号：US11768277B2
公开(公告)日：2023-09-26
申请号：US16674007
申请日：2019-11-05
Applicant: PixArt Imaging Incorporation
Inventor： Kuan Tang , Kai-Chieh Chuang , Chia-Chi Kuo , Jui-Te Chiu
IPC: G01S7/4861 , G01S17/10 , G01S17/89
CPC classification number: G01S7/4861 , G01S17/10 , G01S17/89
Abstract: A time-of-flight sensor for capturing a three-dimensional (3D) image of an object, includes: a light source for emitting projection light pulses at the object according to a projection signal; an array of pixel circuits for sensing reflection light pulses and storing image charges according to the reflection light pulses; and a processing circuit for calculating a first sum of first portions of the image charges and a second sum of second portions of the image charges to generate a distance information signal of the 3D image of the object simultaneously, wherein in one accumulation period, the first portion of the image charges is generated during a first time period, and the second portion of the image charges is generated during a second time period, wherein the second time period is directly following the first time period in the accumulation period.
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公开(公告)号：US11537215B2
公开(公告)日：2022-12-27
申请号：US17852283
申请日：2022-06-28
Applicant: PixArt Imaging Incorporation
Inventor： Chuan-Hsin Lee
Abstract: The invention provides an ambient light sensing device which receives at least one visible light image sensed by an image sensor. The ambient light sensing device includes an image sampling unit and an analyzing unit. The image sampling unit divides the visible light image into plural image blocks, extracts at least one sample data in each image block, and generates a comparison data according to a difference between the sample data extracted at different time points. The analyzing unit analyzes the comparison data and generates an output analysis signal accordingly.
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公开(公告)号：US20210352231A1
公开(公告)日：2021-11-11
申请号：US16867539
申请日：2020-05-05
Applicant: PixArt Imaging Incorporation
Inventor： Ren-Chieh Liu , Wen-Cheng Yen , Hsin-Hung Shen
IPC: H04N5/355
Abstract: A method of operating an HDR pixel circuit includes: establishing a calibration full-well capacity of a photodiode according to a first predetermined voltage level; over-charging both the photodiode and a floating diffusion node; dissipating the charges of the floating diffusion node and the charges on the photodiode so that the charges on the photodiode are substantially equal to the calibration full-well capacity; transferring the charges on the photodiode to the floating diffusion node; and sensing a voltage on the floating diffusion node to generate a calibration signal related to the calibration full-well capacity.
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公开(公告)号：US11023052B2
公开(公告)日：2021-06-01
申请号：US16702522
申请日：2019-12-03
Applicant: PixArt Imaging Incorporation
Inventor： Yu-Hao Huang , Yi-Fang Lee , Ming-Tsan Kao , Nien-Tse Chen
IPC: G06F3/01 , G06F3/00 , G06F3/0485 , G06F3/03 , G06F3/0484 , G06F3/0482 , G06F3/0488 , G06F3/023 , G06T19/00 , G06F3/0481 , G06K9/00 , G06T7/20
Abstract: The present invention discloses a method for outputting a command by detecting a movement of an object, which includes the following steps. First, an image capturing device captures images generated by the movement of the object at different timings by. Next, a motion trajectory is calculated according to the plurality of images. Further next, a corresponding command is outputted according to the motion trajectory. The present invention also provides a system which employs the above-mentioned method.
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公开(公告)号：US20210132198A1
公开(公告)日：2021-05-06
申请号：US16674007
申请日：2019-11-05
Applicant: PixArt Imaging Incorporation
Inventor： KUAN TANG , KAI-CHIEH CHUANG , CHIA-CHI KUO , JUI-TE CHIU
Abstract: A time-of-flight sensor for capturing a three-dimensional (3D) image of an object, includes: a light source for emitting projection light pulses at the object according to a projection signal; an array of pixel circuits for sensing reflection light pulses and storing image charges according to the reflection light pulses; and a processing circuit for calculating a first sum of first portions of the image charges and a second sum of second portions of the image charges to generate a distance information signal of the 3D image of the object simultaneously, wherein in one accumulation period, the first portion of the image charges is generated during a first time period, and the second portion of the image charges is generated during a second time period, wherein the second time period is directly following the first time period in the accumulation period.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10996700B1
公开(公告)日：2021-05-04
申请号：US16706717
申请日：2019-12-07
Applicant: PixArt Imaging Incorporation
Inventor： Kok-Siang Tan
Abstract: A fast response amplifier circuit includes a pre-stage circuit and an output stage circuit. The pre-stage circuit generates a control signal according to a difference between a first input signal and a second input signal. The output stage circuit generates an output signal at an output node according to the control signal. The output stage circuit includes: a power transistor controlled by a driving signal to generate the output signal; a voltage positioning transistor operates according to the output signal to steer a first portion and a second portion of a bias current; an overshoot detecting circuit detecting an overshoot of the output signal to generate an overshoot indicating signal; and a first overshoot suppressor which generates a first overshoot suppressing signal according to the overshoot indicating signal to adjust a conduction resistance of the power transistor to suppress an overshoot of the output signal.
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公开(公告)号：US10982996B2
公开(公告)日：2021-04-20
申请号：US16745483
申请日：2020-01-17
Applicant: PixArt Imaging Incorporation
Inventor： Hui-Hsuan Chen , Nien-Tse Chen
Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.
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公开(公告)号：US10852192B2
公开(公告)日：2020-12-01
申请号：US16183727
申请日：2018-11-07
Applicant: PixArt Imaging Incorporation
Inventor： Chih-Ming Sun , Ming-Han Tsai
Abstract: The present invention discloses a wearable device with combined sensing capabilities, which includes a wearable assembly and at least one multi-function sensor module. The wearable assembly is suitable to be worn on a part of a user's body. The wearable assembly includes at least one light-transmissible window. The multi-function sensor module is located inside the wearable assembly, for performing an image sensing function and an infrared temperature sensing function. The multi-function sensor module includes an image sensor module for sensing a physical or a biological feature of an object through the light-transmissible window by way of image sensing; and an infrared temperature sensor module for sensing temperature through the light-transmissible window by way of infrared temperature sensing.
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9.发明申请公开(公告)号：US20200225326A1
公开(公告)日：2020-07-16
申请号：US16829261
申请日：2020-03-25
Applicant: PixArt Imaging Incorporation
Inventor： Nientse Chen
Abstract: A proximity sensor includes: a transmitter unit for transmitting a light signal; a receiver unit for receiving the light signal reflected by an object to determine a proximity status of the object; and a housing defining a first enclosed accommodation space for accommodating the receiver unit, wherein the portion of the housing which defines the first enclosed accommodation space has a sealed light passage made of a light-transmissible material such that the receiver unit is capable of receiving the light signal reflected by the object through the light passage. The housing can further include a second enclosed accommodation space for accommodating the transmitter unit.
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公开(公告)号：US10578482B2
公开(公告)日：2020-03-03
申请号：US15458941
申请日：2017-03-14
Applicant: PixArt Imaging Incorporation
Inventor： Hui-Hsuan Chen , Nien-Tse Chen
Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.
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