Display Device Brightness Control via Independent Gain Tables
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Solution Overview
Problem
Conventional display devices struggle to adjust brightness and power consumption independently, leading to inflexible control over peak brightness and power usage, which affects the viewing experience and information retention in varying environments.
Innovation Solution
A display device with a setting condition acquisition unit, table calculation unit, average brightness calculation unit, gain calculation unit, and video signal adjustment unit that calculates and adjusts the video signal's gain to control peak brightness and power consumption independently, maintaining original video characteristics like contrast and gloss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If current value is reduced to less than maximum current to reduce power consumption, then power consumption is reduced, but peak brightness is reduced and flexibility in brightness adjustment is lost
Solution Approach 1:
The patent segments the brightness control into two independent parameters: average brightness (controlling power consumption) and peak brightness (controlling display quality). This is achieved through separate control circuits that independently adjust the average value and peak value of the video signal, allowing flexible adjustment of both power consumption and brightness without compromising one for the other.
Solution Approach 2:
The patent implements dynamic control of brightness parameters by allowing real-time adjustment of both average brightness and peak brightness based on viewing conditions, content type, and power consumption requirements. The control system dynamically modifies the video signal characteristics to achieve optimal balance between power efficiency and display quality.
2Use of energy by stationary object
If brightness is reduced to reduce power consumption, then power consumption is reduced, but original video information such as texture, gloss, and contrast is lost
Solution Approach 1:
The patent separates the control of average brightness (affecting power consumption) from peak brightness (affecting video quality). By independently controlling the peak brightness component, the system preserves critical video information such as texture, gloss, and contrast even when average brightness is reduced for lower power consumption.
Solution Approach 2:
The patent changes the parameters of the video signal by independently adjusting average brightness and peak brightness. This allows the system to modify the statistical characteristics of the video signal while preserving the dynamic range and contrast information necessary for maintaining visual quality.
Data Source
AI summary
Provided is a display device including a setting condition acquisition unit for obtaining various conditions for adjusting a gain of a video-signal, a current-brightness table calculation unit that calculates a table representing a relationship between an average brightness and a gain of a video-signal, and that calculates the table capable of setting a peak-brightness and power consumption of the video-signal independently, based on the various conditions acquired by the setting condition acquisition unit, a video-average brightness conversion block that calculates average-brightness of the video-signal input for each frame, a current-brightness control table that calculates a gain of the video-signal from the table based on the average-brightness calculated above, a video gain block that adjusts the video-signal using the gain calculated above, and a display panel that includes a plurality of pixels that emit light in response to a video-signal and displays a video based on the video-signal adjusted above.