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1.发明申请公开(公告)号：US20250076111A1
公开(公告)日：2025-03-06
申请号：US18411987
申请日：2024-01-12
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Ionut A. Mirel , Yan Guan , Akshay Bhat
Abstract: To mitigate undesirable outcomes due to crosstalk in an ambient light sensor reading resulting from light emission from an electronic display, statistics may be gathered to determine and compensate for the crosstalk. For example, the ambient light sensor may detect ambient light levels while the electronic display is temporarily paused to reduce or eliminate crosstalk between the light produced by the electronic display and the ambient light sensor. However, the ambient light sensor may retain charge from a previous light emission, creating back-emission crosstalk. The ratio of back-emission to front-emission (e.g., present light emission) may not be linear, and the degree of nonlinearity may vary with pixel value, color component, display brightness, temperature, and so on. As the ambient light sensor is affected by back-emission, compensation for the nonlinearity between the front-emission and the back-emission may be obtained to estimate the crosstalk induced on the ambient light sensor.
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公开(公告)号：US10720126B2
公开(公告)日：2020-07-21
申请号：US16119834
申请日：2018-08-31
Applicant: Apple Inc.
Inventor： Akshay Bhat , Rui L. Peterson , Tingjun Xu , Yan Guan
Abstract: A color ambient light sensor may gather ambient light measurements during operation of an electronic device. The color ambient light sensor may have a color ambient light detector and an adjustable neutral density filter. The electronic device may have components such as a camera and display that are adjusted using ambient light information from the color ambient light sensor. The display may have a display cover layer. Pixels in an active area of the display may display images through the display cover layer. An inactive area of the display may have an opaque masking layer on an interior surface of the display cover layer. An opening in the opaque masking layer may form an ambient light sensor window for the color ambient light sensor. The adjustable neutral density filter may be interposed between the color ambient light detector and the ambient light sensor window.
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公开(公告)号：US20200074959A1
公开(公告)日：2020-03-05
申请号：US16119834
申请日：2018-08-31
Applicant: Apple Inc.
Inventor： Akshay Bhat , Rui L. Peterson , Tingjun Xu , Yan Guan
Abstract: A color ambient light sensor may gather ambient light measurements during operation of an electronic device. The color ambient light sensor may have a color ambient light detector and an adjustable neutral density filter. The electronic device may have components such as a camera and display that are adjusted using ambient light information from the color ambient light sensor. The display may have a display cover layer. Pixels in an active area of the display may display images through the display cover layer. An inactive area of the display may have an opaque masking layer on an interior surface of the display cover layer. An opening in the opaque masking layer may form an ambient light sensor window for the color ambient light sensor. The adjustable neutral density filter may be interposed between the color ambient light detector and the ambient light sensor window.
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