Image Control Display Device for Low Power Consumption
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Solution Overview
Problem
Low power display devices face challenges in reducing power consumption while maintaining image quality and readability, as existing methods either degrade contrast and image quality or invert photographs, leading to reduced readability and recognition issues.
Innovation Solution
An image control technology that measures luminance and chroma, detects edges using a Sobel operator, and generates output image data by inverting color information only in specific regions, preserving the original image data in exception regions to minimize damage to picture quality and improve text readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If white portions of an image are converted to another color with low luminance to reduce power consumption, then power consumption is reduced, but contrast between text and background is degraded resulting in reduced readability
Solution Approach 1:
The image is segmented into multiple regions: text regions, photograph regions, and other regions. Different processing methods are applied to each region - text regions undergo color conversion to low luminance for power saving, while photograph regions maintain original colors to preserve quality, and other regions are inverted to enhance readability.
Solution Approach 2:
Different quality requirements are applied to different parts of the image. Text regions use low luminance colors for power efficiency, photograph regions use full color for quality preservation, and other regions use inverted colors for readability enhancement.
2Measurement precision
If both the color of the background and text are inverted to improve readability, then readability is improved, but photographs are inverted making them difficult to recognize
Solution Approach 1:
The image is divided into distinct regions (text, photograph, other) and only the 'other' regions undergo inversion processing, while text and photograph regions are excluded from inversion to preserve their original appearance and recognition.
Solution Approach 2:
Photograph regions and text regions are extracted and excluded from the inversion process. Only the remaining 'other' regions are inverted, thereby improving readability without compromising photograph recognition or text appearance.
3Use of energy by moving object
If color information is converted to reduce power consumption, then power consumption is reduced, but picture quality is damaged
Solution Approach 1:
The image is segmented into photograph regions and non-photograph regions. Photograph regions maintain full color information to preserve picture quality, while non-photograph regions (text and other elements) are converted to low luminance colors for power consumption reduction.
Solution Approach 2:
Different color processing strategies are applied locally: photograph regions use full color for quality preservation, text regions use low luminance for power saving, and other regions use inverted colors for readability enhancement.
Data Source
AI summary
An image control technology that enables low power consumption with less compromise in the overall quality of the image is disclosed, in which color information of an image is saved while minimizing degradation of picture quality, and improving text readability. In one aspect, an image control display device includes an image controller configured to measure at least one of luminance values and chroma values of pixels of an input image. In addition, the image controller is configured to detect an edge using the at least one of luminance and chroma values and is configured to invert color information of the input image into inverted image data. The image controller is further configured to generate output image data comprising an inverted region and an exception region, where the inverted region displays the inverted image data and the exception region displays uninverted input image data. The display device additionally includes a data driver configured to receive the output image data and to apply a plurality of data voltages corresponding to the output image data to a display panel.