Invention Grant
- Patent Title: Compensation methods for display brightness change associated with reduced refresh rate
- Patent Title (中): 与刷新率降低相关的显示亮度变化的补偿方法
-
Application No.: US13801918Application Date: 2013-03-13
-
Publication No.: US09262987B2Publication Date: 2016-02-16
- Inventor: Marc Albrecht , Christopher Philip Alan Tann , Nicholas G. Roland
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agent Zachary D. Hadd
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A method is provided for compensating for brightness change in a display. The method includes storing a plurality of look-up tables (LUTs), where each table has a plurality of pixel levels at a variable refresh rate (VRR) and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR). The method also includes receiving an input signal from a graphics processing unit (GPU) and determining the VRR of the input signal from the GPU. The method further includes obtaining the LUT at the determined VRR of the input signal and adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined VRR. The method further includes transmitting the output signal to the display. A system is also provided.
Public/Granted literature
- US09230506B2 Compensation methods for display brightness change associated with reduced refresh rate Public/Granted day:2016-01-05
Information query