Dynamic Pixel Data Bit Depth Adjustment for Power Reduction
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Solution Overview
Problem
Conventional display devices consume excessive power due to fixed high bit number pixel data, which is not necessary for dynamic images, leading to unnecessary power consumption and data transmission.
Innovation Solution
A display device with a timing controller and data driving circuit that dynamically adjusts the bit number of pixel data, reducing it from a higher bit number to a lower bit number for dynamic images, thereby minimizing power consumption through a mapping operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high bit number pixel data is used, then color quality is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the bit number of pixel data adjustable rather than fixed. The system dynamically switches between different bit numbers (e.g., 6-bit and 8-bit) based on the type of image being displayed, allowing the display device to adapt the color depth to actual usage requirements, thereby reducing unnecessary power consumption while maintaining adequate color quality.
Solution Approach 2:
The patent changes the parameter of bit number (color depth) from a fixed high value to a variable parameter that can be adjusted according to display needs. By implementing a switching mechanism that selects between different bit numbers based on image type, the system optimizes the balance between color quality and power consumption.
2Measurement precision
If high bit number pixel data is transmitted, then color resolution is improved, but data transmission volume increases
Solution Approach 1:
The system dynamically adjusts the bit number of pixel data based on the type of image being displayed. For dynamic images, the system uses lower bit numbers to reduce data transmission volume, while reserving higher bit numbers for static images where color resolution is more critical, thus optimizing the balance between quality and data quantity.
Solution Approach 2:
The patent applies local quality by differentiating the bit number usage based on the specific characteristics of the displayed image content. Different bit numbers are assigned to different types of images (dynamic vs. static), allowing the system to allocate data transmission resources efficiently according to the local requirements of each image type.
3Measurement precision
If fixed high bit number is used, then color quality is maintained, but power saving capability is lost
Solution Approach 1:
The patent implements a dynamic switching mechanism that allows the system to transition between different bit numbers based on display requirements. This dynamic adjustment enables the system to maintain color quality when needed while achieving power savings when high color resolution is not required, thereby resolving the contradiction between quality maintenance and power saving capability.
Data Source
AI summary
A display device including a timing controller, a data driving circuit and a display system is provided. The timing controller outputs first pixel data according to input pixel data, wherein a color depth of the first pixel data is a first bit number or a second bit number smaller than the first bit number. The data driving circuit receives the first pixel data and a notice signal, and maps the first pixel data to generate second pixel data according to the notice signal when the color depth of the first pixel data is the second bit number, and directly takes the first pixel data as the second pixel data when the color depth of the first pixel data is the first bit number, and generates at least one driving voltage according to the second pixel data, wherein the color depth of the second pixel data is the first bit number.