Timing Controller Data Transmission Power Saving
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Solution Overview
Problem
The power consumption for data transmission between the timing controller and the source driver in liquid crystal display panels is high due to continuous data transmission at preset speeds, which is inefficient and consumes significant energy.
Innovation Solution
Implementing a data transmission method where the timing controller transmits data at a speed n times the preset speed, suspending transmission after completing a first data packet, and resuming at the time of a second data packet, with optional low power control signaling and invalid data transmission to manage power saving, allowing the communication link to be disconnected or maintained while suspending valid data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission is performed continuously at preset speed between timing controller and source driver, then data can be transmitted reliably, but power consumption becomes excessively high
Solution Approach 1:
The patent implements periodic data transmission by suspending the communication link after completing transmission of each frame or row of valid data, and only reactivating it when next frame or row data needs to be transmitted. This periodic on-demand transmission pattern reduces power consumption compared to continuous transmission, while maintaining data transmission reliability through controlled link activation.
2Use of energy by moving object
If data transmission is suspended to save power, then power consumption is reduced, but data transmission speed and efficiency deteriorate
Solution Approach 1:
The patent accumulates multiple frames or rows of valid data in the timing controller before suspending the communication link. By performing preliminary data accumulation, the system can reactivate the link less frequently and transmit larger data batches, thereby reducing the overall impact on transmission speed while maintaining power savings during suspension periods.
3Use of energy by moving object
If communication link is disconnected to suspend data transmission, then power consumption is reduced significantly, but system complexity increases due to link management
Solution Approach 1:
The patent implements a feedback mechanism where the timing controller monitors whether next frame or row data is ready before suspending or maintaining the communication link. This feedback-based control ensures the link is only disconnected when appropriate, and reactivated timely when data needs transmission, reducing power consumption while managing complexity through intelligent control logic.
Data Source
AI summary
The present disclosure describes a data transmission method, a timing controller, a source driver, and a data transmission system. The method includes: when the timing controller transmits data to the source driver at a speed n times a preset speed, the timing controller suspends transmission of valid data with the source driver after completing transmission of a first data packet; and the transmission of valid data with the source driver is resumed at a transmitting time of a second data packet; the first data packet and the second data packet each includes valid data of a row of sub-pixels, or each includes valid data of a frame. The present disclosure completes the transmission of the first data packet in advance by increasing the transmission speed, then suspends the data transmission, and resumes the data transmission at the transmitting time of the second data packet, thereby reducing the power consumption.