Parallel Data Transmission Device Current Balancing
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Solution Overview
Problem
Conventional data transmission devices are unable to effectively reduce the total current flowing through signal lines during parallel data transmission, particularly in high-resolution LCD modules where increased data volume and transmission frequency lead to higher current demands.
Innovation Solution
A data transmission device that controls parallel data transmission by allowing a first current to flow for bits representing a first logic level and a second, larger current for bits representing a second logic level, with inversion of data logic levels when necessary, to balance the frequency of logic levels and reduce total current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of transmission lines and transmission frequency are increased to handle higher resolution and grayscale data, then data transmission capability is improved, but total current flowing through signal lines increases
Solution Approach 1:
The patent changes the parameter of logic level frequency distribution in transmitted data by dynamically inverting data bits. When the frequency of logic level '0' exceeds that of logic level '1', the system inverts the data before transmission, ensuring a more balanced frequency distribution. This parameter change reduces the total current flowing through signal lines while maintaining the same data transmission capability.
2Use of energy by moving object
If data inversion is performed to balance logic level frequency, then total current is reduced, but additional control complexity is introduced
Solution Approach 1:
The patent applies preliminary action by counting the frequency of logic levels in the data before transmission and deciding whether to invert the data in advance. This preliminary frequency analysis and inversion decision prevents excessive current flow during actual transmission, resolving the contradiction between current reduction and control complexity through proactive rather than reactive control.
Data Source
AI summary
The data transmission device transmits parallel data of a plurality of bits. The data transmission device includes a parallel data control unit that outputs parallel data for which the logic level of each bit of the parallel data is inverted when the number of bits representing a first logic level is greater than the number of bits representing a second logic level, a data transmitter portion that allows a second current that is larger than a first current representing the first logic level to flow to signal lines corresponding with a bit representing the second logic level; and a parallel data supply control unit that supplies parallel data for which the logic level of each bit of the parallel data is inverted to the reception side.