Adaptive Video Transmission Layering for Mobile Power Efficiency
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Solution Overview
Problem
Conventional video transmission systems are not well-suited for mobile devices, as they do not adapt effectively to the varying viewing environments and power conditions of handheld devices, leading to inefficient resource usage and reduced battery life.
Innovation Solution
A device-adaptive video transmission system that uses layered video coding, where video content is encoded into independent and dependent video streams, allowing for flexible decoding based on device parameters such as resolution, power state, and channel conditions, enabling efficient transmission and decoding on mobile devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional video transmission systems are used, then video content can be transmitted, but the system does not adapt to varying device capabilities and power conditions, leading to inefficient resource usage and reduced battery life
Solution Approach 1:
The system dynamically adapts video transmission parameters based on real-time device capabilities and power states. The encoder adjusts resolution, frame rate, and coding complexity according to the mobile device's processing power, display characteristics, and battery status, transforming a static transmission system into a dynamic one that optimizes energy consumption while maintaining video quality
Solution Approach 2:
The patent changes multiple video transmission parameters including resolution, frame rate, and coding complexity based on device capabilities. By varying these parameters according to the mobile device's processing power and power state, the system achieves adaptability while controlling energy usage
2Manufacturing precision
If high resolution video is transmitted to mobile devices, then video quality is improved, but the decoding complexity and power consumption increase
Solution Approach 1:
The video signal is segmented into multiple layers with different resolutions and quality levels. The encoder transmits a base layer at lower resolution that can be decoded with minimal power consumption, and optional enhancement layers that provide higher quality for devices with greater processing capabilities. This segmentation allows receivers to select appropriate layers based on their power state
Solution Approach 2:
The system implements partial decoding where mobile devices decode only the necessary portion of the video signal based on their capabilities. Devices with limited processing power decode only the base layer at lower resolution, while more powerful devices can decode additional enhancement layers for higher quality, avoiding the excessive power consumption of full high-resolution decoding
3Ease of operation
If video is transmitted without adaptation to device parameters, then transmission simplicity is maintained, but resource efficiency and battery life are reduced
Solution Approach 1:
The video transmission system performs self-adaptation by automatically detecting device capabilities and power states, then autonomously adjusting transmission parameters without requiring manual intervention. The encoder and decoder work together to match video quality and complexity to the specific mobile device, achieving both simplicity and efficiency
Data Source
AI summary
A video transmission system includes a transceiver module that receives a device parameter from a remote device and that transmits a video signal to the remote device, wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module chooses the at least one separate video layer stream based on the device parameter.