Display Power Saving During Video Blanking Periods
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Solution Overview
Problem
Current display devices consume significant power during both active and blanking periods of video signals, limiting power management efficiency in multimedia networks, especially in devices with limited power supplies.
Innovation Solution
An integrated circuit package and method that identifies blanking patterns in audio-video data streams, allowing for the termination of powered operation during blanking periods to reduce power consumption, utilizing input interface and timing control circuitry to synchronize and transmit differential video signals and implement power-saving processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power is supplied continuously during both active and blanking periods, then display functionality is maintained without interruption, but power consumption increases significantly
Solution Approach 1:
The patent applies periodic action by enabling selected systems to operate only during active periods and terminating operation during blanking periods. The timing control circuitry synchronizes system operation with the video signal's active and blanking periods, creating a periodic on-off pattern that reduces power consumption while maintaining display functionality. This is achieved through the power saving process that receives timing information from the video signal and controls system operation accordingly.
2Use of energy by moving object
If power is terminated during blanking periods, then power consumption is reduced significantly, but system responsiveness may be affected
Solution Approach 1:
The patent applies preliminary action by preparing and buffering video data and system states during active periods before blanking periods begin. The timing control circuitry anticipates the transition to blanking periods and completes necessary operations in advance, ensuring that when power is terminated, the system can quickly resume without significant delay. This preprocessing during active periods maintains system responsiveness despite power termination during blanking.
3Productivity
If all systems operate continuously, then processing capability is maximized, but power expenditure increases
Solution Approach 1:
The patent applies segmentation by dividing system operations into distinct active and blanking periods that correspond to the video signal structure. During active periods, selected systems operate at full processing capability to handle video data transmission and display updates. During blanking periods, these same systems are terminated to reduce power expenditure. This temporal segmentation allows the system to maximize processing capability when needed while minimizing energy loss during intervals when processing is not required.
Data Source
AI summary
Methods and systems are described for enabling display system power saving during the operation of display devices. 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 timing control circuitry configured to implement a power saving process during the blanking periods of the video signal. The invention further includes methods that support the operation of power saving processes.