Layered IPTV Signal Delivery Across Devices
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Solution Overview
Problem
Current IPTV systems face challenges in delivering media content of varying qualities across different network connections, resulting in inconsistent video stream quality when users access content on multiple devices, such as set-top boxes and cellular devices, due to bandwidth limitations and device capabilities.
Innovation Solution
The IPTV system employs a method to transmit IPTV signals at different quality levels based on the network connection and device capabilities, allowing seamless switching between devices while maintaining user account association and program checkpoints to ensure continuous content access across devices, with the option to upgrade signal quality when bandwidth is available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If IPTV signals are transmitted at high quality levels, then media content quality is improved, but bandwidth consumption increases
Solution Approach 1:
The patent segments the media content into multiple quality layers (e.g., base layer and enhancement layers) that can be transmitted separately. This allows the system to deliver high quality content when bandwidth is available while falling back to lower quality layers when bandwidth is constrained, thus resolving the contradiction between quality and bandwidth consumption
Solution Approach 2:
The patent implements dynamic adaptation of content quality based on real-time network conditions. The system dynamically switches between different quality levels of the same content stream according to available bandwidth, enabling optimal quality-bandwidth tradeoff that resolves the technical contradiction
2Adaptability or versatility
If IPTV signals are transmitted to multiple devices simultaneously, then user accessibility is improved, but network bandwidth requirements increase
Solution Approach 1:
The patent applies local quality adaptation by tailoring the content quality delivered to each specific device based on its capabilities and network conditions. Different devices receive customized quality levels (e.g., mobile devices get lower quality while fixed devices get high quality), which improves accessibility without proportionally increasing total bandwidth consumption
Solution Approach 2:
The patent implements partial content delivery by transmitting only the necessary quality layers to each device based on its needs. Instead of delivering full high-quality content to all devices, the system provides only the base layer to mobile devices and enhancement layers only when needed, reducing overall bandwidth requirements while maintaining accessibility
3Ease of operation
If video streams are switched between devices, then user convenience is improved, but stream continuity is compromised
Solution Approach 1:
The patent implements preliminary actions by pre-loading content and maintaining buffer states on devices before switching occurs. When a user switches devices, the system has already prepared the necessary content data and playback state, allowing seamless continuation without interruption and thus maintaining stream continuity while enabling device switching convenience
Solution Approach 2:
The patent ensures continuity of useful action by maintaining persistent playback state and content buffers across device transitions. The system tracks playback position and preserves content data so that when a user resumes viewing on a different device, the stream continues from the exact same point without interruption, thus resolving the contradiction between convenience and continuity
Data Source
AI summary
A method in a server for providing various Internet Protocol television signal qualities involves an IPTV signal having a first signal quality that is transmitted over a first network connection to a first device. A request to receive the IPTV signal over a second network connection at a second device with the IPTV signal having a second signal quality is received. A determination is made that the second network connection has sufficient bandwidth to transmit the IPTV signal at the second signal quality, and that the second device is capable of receiving IPTV signal. The transmission of the IPTV signal over the first network connection to the first device is ended. An endpoint for the transmission of the IPTV signal to the first device is determined. The IPTV signal is transmitted over the second network connection to the second device at the second signal quality beginning at the determined endpoint.