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公开(公告)号：US20240176375A1
公开(公告)日：2024-05-30
申请号：US18059396
申请日：2022-11-28
Applicant: PixArt Imaging Incorporation
Inventor： Kok-Siang Tan
Abstract: A multi-output linear regulator includes: a main output stage circuit, configured to operably generate a reference output voltage according to a main control voltage; an error amplifier, configured to operably amplify a difference between a reference voltage and a feedback signal to generate the main control voltage, wherein the feedback signal is related to the reference output voltage; a first voltage converter, configured to operably level-shift the main control voltage with a first voltage shifting level to generate a first control voltage; a first output stage circuit, configured to operably generate a first output voltage according to the first control voltage; and a second output stage circuit, configured to operably generate a second output voltage according to the main control voltage.
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公开(公告)号：US20240118141A1
公开(公告)日：2024-04-11
申请号：US18391769
申请日：2023-12-21
Applicant: PixArt Imaging Incorporation
Inventor： Chih-Ming Sun , Ming-Han Tsai
IPC: G01J5/02 , A61B5/00 , A61B5/01 , B81B7/00 , B81B7/02 , G01J5/00 , G01J5/04 , G01J5/14 , G01K13/20 , H04N23/56
CPC classification number: G01J5/0265 , A61B5/01 , A61B5/681 , B81B7/0025 , B81B7/0061 , B81B7/02 , G01J5/0025 , G01J5/027 , G01J5/04 , G01J5/046 , G01J5/14 , G01K13/20 , H04N23/56 , A61B5/02416 , B81B2201/0214 , B81B2201/0235 , B81B2201/0242 , B81B2201/0278 , H01L2224/48091 , H01L2924/16151 , H01L2924/16153 , H01L2924/16235
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 apart 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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公开(公告)号：US11822365B2
公开(公告)日：2023-11-21
申请号：US17994253
申请日：2022-11-25
Applicant: PixArt Imaging Incorporation
Inventor： Chuan-Hsin Lee
CPC classification number: G06F3/0304 , G06V10/60
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：US11692870B2
公开(公告)日：2023-07-04
申请号：US17209635
申请日：2021-03-23
Applicant: PixArt Imaging Incorporation
Inventor： Hui-Hsuan Chen , Nien-Tse Chen
CPC classification number: G01J1/0204 , G01J1/0233 , G01J1/0414 , G01J1/0466 , G01J1/0488 , G01S7/4811 , G01S7/4813 , G01S7/499 , G01S17/04 , G02B27/144 , Y10T29/49016
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：US20230168704A1
公开(公告)日：2023-06-01
申请号：US17538941
申请日：2021-11-30
Applicant: PixArt Imaging Incorporation
Inventor： Chuang-Shen Voo
Abstract: A switch circuit includes: a switch coupled to control an electrical parameter of a main circuit. A. PSRR of the main circuit is determined by the switch; a first driver configured to operably drive the switch, wherein the first driver is powered by a supply current; and a supply transistor configured to operably generate the supply current, wherein the supply transistor is biased in a subthreshold region, such that the PSRR of the main circuit is higher than a predetermined level within a predetermined frequency range.
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Patent Agency Ranking
公开(公告)号：US20230092243A1
公开(公告)日：2023-03-23
申请号：US17994253
申请日：2022-11-25
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：US20220364927A1
公开(公告)日：2022-11-17
申请号：US17676656
申请日：2022-02-21
Applicant: PixArt Imaging Incorporation
Inventor： Ming-Han Tsai , Chih-Fan Hu
IPC: G01J5/02 , H01L31/101 , H01L31/18 , G01J5/12
Abstract: The present invention provides a far infrared (FIR) sensor device formed on a substrate, wherein the FIR sensor device includes: a sensor region, which is formed on the substrate, and is configured to operably sense a far infrared signal; and a sensor dielectric layer, which is formed on the sensor region, wherein a thickness of the sensor dielectric layer is determined by a sacrificial metal layer.
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公开(公告)号：US11343448B2
公开(公告)日：2022-05-24
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：US20210368113A1
公开(公告)日：2021-11-25
申请号：US16879655
申请日：2020-05-20
Applicant: PixArt Imaging Incorporation
Inventor： Wooi-Kip Lim , Shan-Chong Tan
IPC: H04N5/355 , H01L27/146 , H04N5/378
Abstract: An image sensor uses a pixel circuit which includes a BJT phototransistor having multiple selectable beta values. The BJT is one semiconductor device includes: a substrate having a first conductivity type; a first well having the first conductivity type; a collector electrode having the first conductivity type in the first well; a second well having a first concentration of a second conductivity type; a first emitter electrode having the first conductivity type in the second well; a base electrode having the second conductivity type in the second well; a third well having a second concentration of the second conductivity type, wherein the second concentration is different from the first concentration; and a second emitter electrode having the first conductivity type in the third well.
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公开(公告)号：US20210208252A1
公开(公告)日：2021-07-08
申请号：US17188610
申请日：2021-03-01
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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