Scramble Processing Timing for EMI Noise Reduction in Display Circuits
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Solution Overview
Problem
Conventional scramble processing in multi-bus communication systems fails to adequately reduce electromagnetic interference (EMI) noise as communication speeds increase, due to synchronized phase alignment across buses leading to interference.
Innovation Solution
Implementing an electrical circuit with a transmission unit and reception units that perform scramble processing at different timings for each bus, utilizing a delay unit to generate output delays and a scramble unit to create timing differences between data frames on arbitrary buses, thereby reducing EMI noise without increasing the number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If scramble processing is performed at the same timing in all buses, then the scramble processing is simple to implement, but electromagnetic interference noise occurs between buses
Solution Approach 1:
The patent applies periodic action by introducing intentional time intervals between scramble processing operations on different buses. The scramble processing is performed periodically but with staggered timing across multiple buses, creating a rhythmic pattern that prevents simultaneous interference while maintaining the periodic nature of the processing.
Solution Approach 2:
The patent implements dynamics by making the scramble processing timing variable across different buses rather than static and uniform. Each bus experiences scramble processing at dynamically adjusted times, allowing the system to adapt and prevent fixed-pattern interference while maintaining overall processing efficiency.
2Productivity
If communication speed is increased, then data transmission efficiency is improved, but electromagnetic interference noise increases
Solution Approach 1:
The patent applies segmentation by dividing the high-speed data transmission into separate time slots across multiple buses. Instead of transmitting all data simultaneously at high speed, the transmission is segmented temporally so that scramble processing and data transmission occur in staggered intervals, reducing peak interference while maintaining overall throughput.
Data Source
AI summary
Provided are an electric circuit and a display device having the electric circuit. The electric circuit comprises a transmission unit and one or more reception units that perform data frame communications with the transmission unit via a plurality of buses. In the electric circuit, scramble processing is performed during the data frame communications, wherein the scramble processing is performed at different timings for the respective buses with respect to the data frame communication time, whereby the occurrence of EMI noise can be more reliably reduced without increasing the number of components (for example, gaskets).