Display Driver IC Timing Extraction for Power Reduction
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Solution Overview
Problem
Current display systems consume significant power during both active and blanking periods, leading to inefficient power usage and increased electromagnetic interference, especially as multimedia devices demand faster and more efficient data transfer.
Innovation Solution
The integration of an integrated circuit package with input interface circuitry, timing extraction circuitry, symbol buffers, and a scheduler that converts audio-video data streams into low voltage differential signals (LVDS) and identifies timing patterns to enable direct point-to-point data transport to column drivers, allowing for selective power reduction during blanking intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If video signals are transmitted continuously including blanking periods, then complete frame boundary demarcation is achieved, but power consumption increases significantly
Solution Approach 1:
The patent extracts and removes the blanking periods from the continuous video signal transmission. By taking out the blanking intervals, the system eliminates power consumption during these periods while maintaining reliable frame boundary demarcation through alternative timing mechanisms embedded in the active signal portions.
Solution Approach 2:
The patent implements periodic action by transmitting video data in discrete packets during active periods only, with timing information embedded in each packet. This periodic transmission pattern during active periods replaces continuous transmission, reducing power consumption while maintaining frame synchronization through the embedded timing data.
2Productivity
If multimedia data transfer capacity is increased, then data transmission efficiency improves, but power consumption and electromagnetic interference increase
Solution Approach 1:
The patent applies dynamics by making the data transmission system adaptive - it dynamically adjusts transmission activity based on whether the current period is active or blanking. The system transitions between transmitting at full capacity during active periods and suspending transmission during blanking periods, optimizing both data transfer efficiency and power consumption.
Solution Approach 2:
The patent changes the transmission parameter from continuous to intermittent by eliminating blanking period transmissions. This parameter change allows the system to maintain high data transfer efficiency during active periods while reducing overall power consumption by a factor of two or more through the elimination of transmissions during blanking periods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution significantly reduces power consumption during blanking intervals, enhancing power savings and reducing electromagnetic interference while maintaining efficient data transfer, thereby improving the operational efficiency of display devices.
Implementation Method 1
input processing circuitry for receiving audio-video signal and converting the audio-video data stream input into a low voltage differential signal (LVDS) that is output as a differential audio-video signal
Data Source
AI summary
Methods and systems are described for enabling display system data transmission during use. An integrated circuit package includes input interface circuitry configured to receive an audio-video data stream having a video signal and timing information and timing extraction circuitry that can identify blanking patterns for the video signal. The package includes input processing circuitry for receiving audio-video signal and converting the audio-video data stream input into a low voltage differential signal (LVDS). The package includes a timing controller having timing extraction circuitry, a set of symbol buffers, a scheduler, and timing control circuitry. All configured to implement LVDS data transfer and in some implementation enable point to point data transfer from data buffers to associated column drivers.