Display Device Data Lane Activation for Power Reduction
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Solution Overview
Problem
Display devices face challenges in reducing power consumption when displaying partial images, as existing methods often activate all data lanes regardless of the image resolution, leading to increased standby power usage.
Innovation Solution
A method and system for a display device that determines the number of activation data lanes based on partial resolution information, generating a lane control signal to activate only the necessary data lanes, reducing power consumption by deactivating unused lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If all data lanes are activated for image display, then the display resolution and quality are maintained, but power consumption increases due to unused lanes remaining active
Solution Approach 1:
The data transmission channel is segmented into multiple independent data lanes. The patent activates only the necessary number of lanes based on the actual display resolution requirements, rather than keeping all lanes active. This segmentation allows selective activation of lanes to match the display content size, reducing power consumption while maintaining display quality.
Solution Approach 2:
The system dynamically adjusts the number of active data lanes based on the display resolution information. The timing controller receives partial display signals, determines the required resolution, and accordingly activates the appropriate number of data lanes. This dynamic adaptation ensures that power consumption is optimized according to the actual display needs without compromising display quality.
2Measurement precision
If the number of data lanes is increased for high resolution display, then the display resolution is improved, but power consumption increases due to more lanes being activated
Solution Approach 1:
The system changes the operational parameters of the data lanes based on the display resolution requirements. When partial display is detected, the timing controller adjusts the number of active lanes to match the reduced resolution needs. This parameter adjustment allows the system to maintain high resolution capability when needed while reducing power consumption when lower resolution suffices.
Solution Approach 2:
Instead of always activating all data lanes (excessive action), the system activates only the partial number of lanes necessary for the current display content. This partial action approach ensures that sufficient bandwidth is allocated for the required resolution while avoiding the power waste of activating unnecessary lanes.
3Speed
If data transmission is performed through multiple data lanes, then the data transmission speed is increased, but the complexity of lane control and management increases
Solution Approach 1:
The timing controller receives feedback information about the display resolution requirements through partial display signals. Based on this feedback, it automatically determines the appropriate number of data lanes to activate and configures the transmission accordingly. This feedback mechanism simplifies the control complexity by making the system self-adjusting rather than requiring manual or complex external control for each resolution change.
Solution Approach 2:
The timing controller performs self-service by automatically detecting the display resolution requirements and configuring the data lane activation without external intervention. The system autonomously determines how many lanes are needed based on the partial display signals it receives, eliminating the need for complex external control mechanisms and simplifying the overall system architecture.
Data Source
AI summary
A driving method of a display device includes: receiving a partial display signal from a graphic controller; detecting partial resolution information from the partial display signal; determining a number of activation data lanes from among a plurality of data lanes based on the partial resolution information; generating a lane control signal including information on the number of activation data lanes; outputting the lane control signal to the graphic controller; and receiving image data through the activation data lanes from among the plurality of data lanes from the graphic controller.