Display Sound Control Using Active Pixel Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices, particularly OLED displays, do not effectively enhance the user experience when showing still images without audio, as they lack the ability to dynamically adjust sound output based on image characteristics.
Innovation Solution
A display device comprising a display unit, signal controller, and sound controller that generates sound output signals based on the ratio of active pixels per frame, allowing for synchronized sound adjustments with vertical synchronization signals to produce varying volume levels and sounds corresponding to image characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sound output is always enabled for still images, then user experience is improved, but energy consumption increases
Solution Approach 1:
The patent changes the parameter of sound output based on the density of active pixels in the displayed image. When pixel density exceeds a threshold (indicating a still image), sound output is enabled; otherwise it remains disabled. This dynamic parameter adjustment resolves the contradiction by adapting sound output to image characteristics.
Solution Approach 2:
The system dynamically adjusts sound output status based on real-time analysis of active pixel ratios in displayed images. The sound controller continuously monitors image characteristics and switches sound output on or off accordingly, making the system adaptive rather than static, thus improving user experience only when necessary while conserving energy.
2Use of energy by moving object
If sound output is always disabled, then energy consumption is reduced, but user experience deteriorates
Solution Approach 1:
The patent implements conditional parameter changes where sound output is enabled only when the ratio of active pixels exceeds a predetermined threshold. This selective enabling ensures energy is consumed for sound output only when it enhances user experience (i.e., when displaying still images with high pixel density).
Solution Approach 2:
The system performs preliminary analysis of the displayed image by calculating the ratio of active pixels before deciding whether to enable sound output. This preliminary action prevents unnecessary sound output and energy consumption while ensuring sound is provided when it will improve user experience.
3Ease of operation
If adaptive sound output based on pixel ratio is implemented, then user experience is enhanced, but device complexity increases
Solution Approach 1:
The display device is enhanced with multi-functionality by integrating a sound controller that can both display images and conditionally output sound based on image analysis. The existing display components are utilized for dual purposes: image rendering and providing the basis for sound output decisions, thereby reducing overall system complexity.
Solution Approach 2:
The system implements a feedback mechanism where the sound controller receives information about active pixel ratios from the display controller and adjusts sound output accordingly. This closed-loop feedback enables adaptive sound output without requiring complex external analysis systems, as the display device itself provides the necessary image characteristic data.
Data Source
AI summary
A display device and a driving method thereof where different sounds are output depending upon characteristics of display images. The display device includes a display unit having a plurality of pixels, a signal controller, and a sound controller. The display unit displays images by selectively activating pixels from among the plurality of pixels in accordance with input video signals and input image control signals. The signal controller reads the input video signals to generate on-pixel signals having information about a ratio of a number of the activated pixels compared to a total number of pixels in the plurality of pixels per each frame and generating a sound output start signal. The sound controller determines a range from among predetermined ratio ranges corresponding to the ratio of the number of active pixels to define a plurality of volume levels, and determining the volume level corresponding to the on-pixel signal so as to generate a sound output instruction signal corresponding to the determined volume level.