Invention Grant
- Patent Title: Devices and methods for controlling brightness of a display backlight
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Application No.: US15478549Application Date: 2017-04-04
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Publication No.: US10034343B2Publication Date: 2018-07-24
- Inventor: Asif Hussain , Jingdong Chen , Manisha P. Pandya , Adrian E. Sun
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder, P.C.
- Main IPC: H05B37/00
- IPC: H05B37/00 ; H05B33/08

Abstract:
A backlight driver chip for an electronic device includes an input that receives data corresponding to a brightness of a backlight device. The backlight driver chip also includes correction circuitry that determines an amplitude correction factor based at least in part on the data and the brightness of the backlight device. The correction circuitry also determines a corrected brightness based at least in part on the amplitude correction factor. The backlight driver chip further includes an output that provides a current signal that drives the backlight device, wherein the current signal is based at least in part on the corrected brightness.
Public/Granted literature
- US20170208661A1 DEVICES AND METHODS FOR CONTROLLING BRIGHTNESS OF A DISPLAY BACKLIGHT Public/Granted day:2017-07-20
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