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公开(公告)号：US10911748B1
公开(公告)日：2021-02-02
申请号：US16506410
申请日：2019-07-09
Applicant: Apple Inc.
Inventor： Robert Molholm , Mingxia Gu , Lu Zhang , Francisco H. Imai , Jiaying Wu , Shahram Peyvandi , Gabriel Marcu , Po-Chieh Hung , Xiran Wang
Abstract: A display calibration system may include a first electronic device that includes an ambient light sensor and a display to be calibrated in a second electronic device. The first electronic device may generate test patterns to be displayed on the display. The ambient light sensor may receive light emitted from the display based on the test patterns to generate display color space data. The first electronic device may generate calibration data for the display based on the display color space data and a target reference color space. The second electronic device may store the calibration data and use the calibration data to generate more accurate images. Because the first electronic device may include other functionalities other display calibration, specialized display calibration equipment may be omitted. Additionally, a third electronic device that acts as an intermediary between the first and second electronic devices.
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公开(公告)号：US11991808B2
公开(公告)日：2024-05-21
申请号：US16034179
申请日：2018-07-12
Applicant: Apple Inc.
Inventor： Po-Chieh Hung , Serhan O. Isikman
CPC classification number: H05B47/11 , G09G3/32 , H05B45/14 , G09G2320/0626
Abstract: An electronic device may be operated in ambient light. The electronic device may have a color ambient light sensor that is configured to produce color ambient light sensor data based on the ambient light. The electronic device may also have a flicker sensor that has a faster response time than the color ambient light sensor and that is used in detecting dynamic changes in the ambient light. Control circuitry in the electronic device may analyze flicker sensor data to identify the number of light sources producing the ambient light. The control circuitry may apply a frequency transform to the flicker sensor data or make measurements with the flicker sensor in multiple directions. Based on this information, the control circuitry may identify the number of light sources and may use this information in retrieving an ambient light spectrum associated with the ambient light using the color ambient light sensor data.
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公开(公告)号：US11126281B2
公开(公告)日：2021-09-21
申请号：US16682857
申请日：2019-11-13
Applicant: Apple Inc.
Inventor： Nicholas C. Lewty , Mahdi Nezamabadi , Po-Chieh Hung , Tze Yong Poh
IPC: G06F3/0354 , G06F3/041 , G06F3/0488
Abstract: A device such as a computer stylus may have a color sensor. The color sensor may have a plurality of photodetectors each of which measures light for a different respective color channel. The color sensor may also have one or more light-emitting devices. Control circuitry may use the light-emitting devices to illuminate an external object while using the photodetectors to measure reflected light to determine the color of the external object. The electronic device may have a housing with an elongated shaft. The shaft may have a tip and an opposing end. The tip may be configured to emit electromagnetic signals that are detected by a touch sensor in a touch sensitive display. The color sensor may be located at the end opposite the tip, may be located at the tip, or may be optically coupled to the tip using a light guide.
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公开(公告)号：US20210287586A1
公开(公告)日：2021-09-16
申请号：US16818945
申请日：2020-03-13
Applicant: Apple Inc.
Inventor： Po-Chieh Hung , Zhen Zhang
Abstract: An electronic device may have a camera that captures images of objects that are illuminated by ambient light. Some ambient light sources may not render the colors of objects faithfully. To detect low quality ambient lighting conditions and to correct for these conditions, control circuitry in the electronic device gathers ambient light measurements from a color ambient light sensor. The measurements are used to produce an ambient light spectral power distribution. The ambient light spectral power distribution can be applied to a series of test color samples to produce responses. Responses can also be produced by applying a reference illuminant to the test color samples. These responses can then be processed to generate a color rendering index or other color rendering metric for the ambient light and can be used to create a color correction matrix to correct the color of the captured images.
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公开(公告)号：US20200225778A1
公开(公告)日：2020-07-16
申请号：US16682857
申请日：2019-11-13
Applicant: Apple Inc.
Inventor： Nicholas C. Lewty , Mahdi Nezamabadi , Po-Chieh Hung , Tze Yong Poh
IPC: G06F3/0354 , G06F3/0488 , G06F3/041
Abstract: A device such as a computer stylus may have a color sensor. The color sensor may have a plurality of photodetectors each of which measures light for a different respective color channel. The color sensor may also have one or more light-emitting devices. Control circuitry may use the light-emitting devices to illuminate an external object while using the photodetectors to measure reflected light to determine the color of the external object. The electronic device may have a housing with an elongated shaft. The shaft may have a tip and an opposing end. The tip may be configured to emit electromagnetic signals that are detected by a touch sensor in a touch sensitive display. The color sensor may be located at the end opposite the tip, may be located at the tip, or may be optically coupled to the tip using a light guide.
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Patent Agency Ranking
公开(公告)号：US20200022239A1
公开(公告)日：2020-01-16
申请号：US16034179
申请日：2018-07-12
Applicant: Apple Inc.
Inventor： Po-Chieh Hung , Serhan O. Isikman
Abstract: An electronic device may be operated in ambient light. The electronic device may have a color ambient light sensor that is configured to produce color ambient light sensor data based on the ambient light. The electronic device may also have a flicker sensor that has a faster response time than the color ambient light sensor and that is used in detecting dynamic changes in the ambient light. Control circuitry in the electronic device may analyze flicker sensor data to identify the number of light sources producing the ambient light. The control circuitry may apply a frequency transform to the flicker sensor data or make measurements with the flicker sensor in multiple directions. Based on this information, the control circuitry may identify the number of light sources and may use this information in retrieving an ambient light spectrum associated with the ambient light using the color ambient light sensor data.
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公开(公告)号：US20210357044A1
公开(公告)日：2021-11-18
申请号：US17390641
申请日：2021-07-30
Applicant: Apple Inc.
Inventor： Nicholas C. Lewty , Mahdi Nezamabadi , Po-Chieh Hung , Tze Yong Poh
IPC: G06F3/0354 , G06F3/041 , G06F3/0488
Abstract: A device such as a computer stylus may have a color sensor. The color sensor may have a plurality of photodetectors each of which measures light for a different respective color channel. The color sensor may also have one or more light-emitting devices. Control circuitry may use the light-emitting devices to illuminate an external object while using the photodetectors to measure reflected light to determine the color of the external object. The electronic device may have a housing with an elongated shaft. The shaft may have a tip and an opposing end. The tip may be configured to emit electromagnetic signals that are detected by a touch sensor in a touch sensitive display. The color sensor may be located at the end opposite the tip, may be located at the tip, or may be optically coupled to the tip using a light guide.
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公开(公告)号：US20200294468A1
公开(公告)日：2020-09-17
申请号：US16352745
申请日：2019-03-13
Applicant: Apple Inc.
Inventor： Po-Chieh Hung , Prashanth S. Holenarsipur , Serhan O. Isikman
IPC: G09G5/10 , H04B10/516
Abstract: An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. Control circuitry in the electronic device may control the array of pixels while gathering measurements with the ambient light sensor. This allows the control circuitry to determine which portion of each ambient light sensor measurement is due to ambient light exposure and which portion of each ambient light sensor measurement is due to stray light from the array of pixels. The control circuitry can then remove the stray light contribution to the ambient light sensor measurements to produce corrected readings of ambient light levels. Display adjustments such as display brightness changes and color changes can be made using ambient light readings.
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公开(公告)号：US20190098179A1
公开(公告)日：2019-03-28
申请号：US15717733
申请日：2017-09-27
Applicant: Apple Inc.
Inventor： Po-Chieh Hung , Prashanth S. Holenarsipur , Serhan O. Isikman
Abstract: A submersible electronic device such as a waterproof cellular telephone may be provided with an image sensor. The image sensor may capture images of underwater objects. Control circuitry in the submersible electronic device may adjust image contrast and color balance based on information from sensors and other information. The electronic device may have an ambient light sensor. The ambient light sensor may be a color ambient light sensor and may be used in measuring ambient lighting conditions above water and underwater. A depth sensor may be used in measuring the depth of the image sensor and other components of the electronic device underwater. Information on the depth of the image sensor, information on the distance of an underwater object to the image sensor, and angular orientation information for the electronic device and image sensor may be used in color balancing an image.
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公开(公告)号：US20190079236A1
公开(公告)日：2019-03-14
申请号：US15699949
申请日：2017-09-08
Applicant: Apple Inc.
Inventor： Po-Chieh Hung
IPC: G02B5/30 , H01L51/52 , H01L27/32 , G02F1/13363 , G02F1/1335
Abstract: An electronic device may be provided with a display mounted in a housing. The display may have an array of pixels that form an active area and may have an inactive area that runs along an edge of the active area. An opaque layer may be formed on an inner surface of a display cover layer in the inactive area of the display or may be formed on another transparent layer in the electronic device. An optical component window may be formed from the opening and may be aligned with an optical component such as a proximity sensor, ambient light sensor, image sensor, or light source. The optical component window may have a quarter wave plate, a linear polarizer interposed between the transparent layer and the quarter wave plate, and a partially reflective mirror interposed between the optical component and the quarter wave plate.
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