Over Drive Data Generator for Display Driver Speed
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Solution Overview
Problem
Current display devices face challenges in increasing driving speed, particularly in ultra-high definition television applications, where existing technologies struggle to efficiently manage display data and voltages to enhance performance.
Innovation Solution
A data generator and display driver system that utilizes an over drive voltage mechanism, including an over drive data generator and buffer, which generates and manages over drive data based on previous and current display data using a look-up table, to increase the driving speed of display panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional display driving methods are used, then device complexity is kept simple, but driving speed cannot be increased sufficiently
Solution Approach 1:
The patent applies preliminary action by generating over drive data in advance based on previous display data and current display data. The buffer stores this pre-generated over drive data, so when a display transition is needed, the system can immediately apply the pre-calculated over drive voltage without waiting for real-time computation, thus increasing driving speed while keeping the overall system complexity manageable.
Solution Approach 2:
The patent segments the display data processing into multiple components: the buffer separates storage of over drive data from generation, the over drive data generator is a distinct module that processes previous and current display data separately, and the look-up table stores pre-computed values. This segmentation allows each component to operate independently and efficiently, improving driving speed without creating an overly complex monolithic system.
2Speed
If over drive voltage is applied continuously, then driving speed increases, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by applying over drive voltage only during specific transition periods when display data changes are detected. The system compares previous display data with current display data, and only generates and applies over drive data when a transition is needed. During stable display periods, the over drive mechanism remains inactive, thus maintaining high driving speed capability while reducing overall energy consumption.
3Speed
If over drive data is generated for all transitions, then driving speed is maximized, but loss of time occurs when unnecessary over drive is applied
Solution Approach 1:
The patent applies feedback by continuously comparing previous display data with current display data to determine whether a transition actually occurs. This feedback mechanism allows the system to intelligently activate or deactivate the over drive function based on real-time conditions. When no transition is detected (display data remains the same), the over drive is not applied, avoiding unnecessary delays and optimizing the balance between driving speed and time efficiency.
Data Source
AI summary
A data generator includes an over drive data generator and a buffer. The over drive data generator generates an over drive data based on a previous display data and a current display data. The buffer provides the previous display data to the over drive data generator. The buffer stores the current display data and the over drive data. The buffer outputs the current display data and the over drive data. The data generator may increase the speed of driving the load connected to a display driver using the over drive voltage corresponding to the over drive data. If the speed of driving the load connected to the display driver is increased, the operational speed of the display device may be increased.