Display Data Transmission Reducing Electromagnetic Interference
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Solution Overview
Problem
Existing display devices experience significant electromagnetic interference due to data transitions during image data transmission, particularly as the resolution and size of the image display unit increase, leading to inefficiencies and potential interference issues.
Innovation Solution
The solution involves converting N-bit data into (N−1)-bit data and generating a restoring signal to minimize data transitions, with a data converter and data restorer working together to ensure accurate data transmission and reduce electromagnetic interference by using a look-up table or memory to map input data into reduced bit formats and restore the original data based on the signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If data transmission is performed using full N-bit data, then data accuracy is maintained, but electromagnetic interference increases due to frequent data transitions
Solution Approach 1:
The patent segments the N-bit data transmission into two parts: (N-1) data bits and 1 restoring signal bit. This segmentation allows the data bits to be transmitted with fewer transitions while the restoring signal provides the information needed to reconstruct the original N-bit data at the receiver, thereby reducing electromagnetic interference without losing data accuracy.
Solution Approach 2:
The restoring signal acts as an intermediary that carries the essential information about the most significant bit transitions. By transmitting this intermediate information separately, the system can reconstruct the full N-bit data without requiring all N bits to transition simultaneously, thus reducing electromagnetic interference while maintaining data integrity.
2Measurement precision
If resolution and size of image display unit are increased, then display quality is improved, but electromagnetic interference increases due to more data transitions
Solution Approach 1:
By segmenting the data transmission into (N-1) data bits and 1 restoring signal, the patent enables high-resolution displays to operate with reduced data transitions. The restoring signal compactly encodes the critical transition information, allowing high pixel counts and resolutions without proportionally increasing electromagnetic interference.
3Object-affected harmful factors
If data transitions are reduced by bit decrease, then electromagnetic interference is minimized, but data transmission complexity increases
Solution Approach 1:
The patent changes the parameter representation by using (N-1) bits plus 1 restoring signal instead of N bits. This parameter transformation simplifies the data transmission by reducing the number of data lines required while adding a single restoring signal line, thereby reducing electromagnetic interference with minimal increase in overall system complexity.
Data Source
AI summary
An apparatus for transmitting an image data within a display device includes a data converter converting an N-bit data, N is a positive integer, into an (N−1)-bit data and concurrently generating a restoring signal; and a data restorer restoring the (N−1)-bit data to the N-bit data in accordance with a value of the restoring signal.