Invention Grant
- Patent Title: Non-linear display brightness adjustment
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Application No.: US14631405Application Date: 2015-02-25
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Publication No.: US10264266B2Publication Date: 2019-04-16
- Inventor: Hao Pan
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: G06F3/14
- IPC: G06F3/14 ; G06T5/00 ; G09G3/20 ; G09G5/00 ; G09G5/02 ; G09G5/10 ; H04N1/60 ; H04N1/64 ; H04N5/20 ; H04N5/50 ; H04N9/64 ; H04N9/67 ; H04N19/14 ; H04N19/17 ; H04N19/30 ; H04N19/33 ; H04N19/44 ; H04N19/52 ; H04N19/86 ; H04N19/98 ; H04N19/136 ; H04N19/184 ; H04N19/186 ; H04N19/169 ; H04N19/176 ; H04N19/182 ; H04N5/235 ; H04N19/172 ; H04N19/102 ; H04N19/137 ; H04N19/177 ; H04N21/422 ; H04N21/431 ; H04N19/124 ; H04N19/154 ; H04N19/463 ; H04N21/4223 ; H04N21/44 ; H04N21/4402 ; H04N21/442 ; H04N21/485

Abstract:
Display brightness adjustment apparatus and methods are described in which the average brightness of a display may be scaled up or down using a non-linear function. When applying the non-linear function to scale down brightness, the contrast of the output signal may not be reduced so that the dynamic range and highlights are preserved. The non-linear brightness adjustment may be performed automatically, for example in response to ambient light level as detected by sensor(s), but may also be applied in response to a user adjustment to a brightness control knob or slider. The non-linear brightness adjustment may be performed globally, or alternatively may be performed on local regions of an image or display panel. The non-linear function may be a piecewise linear function, or some other non-linear function.
Public/Granted literature
- US20150243200A1 NON-LINEAR DISPLAY BRIGHTNESS ADJUSTMENT Public/Granted day:2015-08-27
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