Gamma Correction Circuit Single Transmission Line Control
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Solution Overview
Problem
Current gamma correction circuits in display devices require multiple transmission lines to control gamma tap points, leading to increased complexity and potential inefficiencies in gamma correction performance.
Innovation Solution
A gamma correction circuit that receives gamma control signals through a single transmission line, using an input circuit with buffers, latches, and a switch circuit to output these signals in parallel, allowing the voltage generator to select gamma tap points and generate corresponding voltages, thereby reducing circuit complexity and improving gamma correction performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transmission lines are used to control gamma tap points, then gamma correction performance can be maintained, but circuit complexity increases
Solution Approach 1:
Multiple gamma control signals that would traditionally require separate transmission lines are merged into a single transmission line. The input circuit receives these signals sequentially through the single line and processes them to control the voltage generator, thereby reducing the number of transmission lines from multiple to one while maintaining gamma correction functionality.
Solution Approach 2:
The circuit transitions from a static multiple-line configuration to a dynamic single-line system that sequentially transmits control signals. The input circuit dynamically processes incoming signals and the voltage generator dynamically selects gamma tap points based on the sequentially received control signals, enabling flexibility without requiring parallel transmission lines.
2Device complexity
If a single transmission line is used to receive gamma control signals, then circuit complexity is reduced, but signal transmission capability must be enhanced
Solution Approach 1:
The input circuit acts as an intermediary between the single transmission line and the voltage generator. It receives sequential gamma control signals through the single line, processes them through buffers and latches, and generates appropriate control signals for the voltage generator, thereby enabling the single transmission line to effectively control multiple gamma tap points.
Solution Approach 2:
The system transitions from spatial parallelism (multiple transmission lines) to temporal sequentiality (single transmission line with sequential signal transmission). By adding the time dimension to signal transmission, the circuit achieves the same control capability with reduced spatial complexity.
Data Source
AI summary
A gamma correction circuit includes an input circuit configured to sequentially receive gamma control signals used for selecting gamma tap points from a control circuit through a single transmission line, and to output the received gamma control signals, and a voltage generator configured to select the gamma tap points based on the gamma control signals, and to generate gamma voltages according to the gamma tap points.