Companion Device Interoperability via Capability-Based Media Adaptation
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Solution Overview
Problem
Existing broadcast systems face challenges in efficiently providing services to terminal devices such as smartphones and tablets, particularly in transmitting emergency alerts and ensuring interoperability with diverse device capabilities.
Innovation Solution
A broadcast reception device and companion device system that establishes pairing sessions, exchanges device capability information, and adapts media component delivery based on device capabilities, using alternative media components and user input to ensure seamless presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If broadcast services are transmitted to diverse terminal devices, then service coverage is improved, but interoperability difficulties arise due to varying device capabilities
Solution Approach 1:
The system changes parameters by transmitting device capability information (resolution, codec support, processing power) and adapting media component delivery parameters accordingly. The broadcast reception device receives capability parameters from terminal devices and adjusts media component selection, resolution, and format to match device specifications, enabling seamless interoperability across diverse devices.
Solution Approach 2:
The system implements dynamic adaptation where the broadcast reception device dynamically selects and delivers appropriate media components based on real-time device capability information. Terminal devices dynamically report their capabilities, and the system dynamically adjusts service delivery parameters including media format, resolution, and transmission protocol to optimize compatibility.
2Manufacturing precision
If media components are delivered according to device capabilities, then presentation quality is improved, but system complexity increases due to capability verification and alternative component management
Solution Approach 1:
The system performs preliminary actions by having terminal devices report their capability information before media component delivery. The broadcast reception device pre-processes this capability information and prepares appropriate media components in advance, verifying device capabilities prior to full service delivery. This preliminary verification simplifies the overall system by preventing incompatible deliveries.
Solution Approach 2:
The broadcast reception device acts as an intermediary between the content/signaling server and terminal devices. It receives capability information from terminal devices, processes this information, and selectively requests appropriate media components from the content/signaling server. This intermediary role simplifies the system architecture by centralizing capability verification and media component selection logic.
3Reliability
If alternative media components are provided for incompatible devices, then service reliability is improved, but information transmission overhead increases
Solution Approach 1:
The system applies local quality by providing different media component qualities tailored to specific device capabilities. Instead of delivering a single universal media component, the broadcast reception device analyzes individual device capabilities and delivers appropriately optimized media components - higher quality for capable devices, alternative formats for less capable devices. This localized adaptation ensures reliability while minimizing unnecessary information overhead.
Data Source
AI summary
A companion device is provided for interoperating with a broadcast service that a broadcast reception device receives. The companion device comprises a communication unit and a control unit. The communication unit transmits a discovery request to the broadcast reception device, receives a discovery response from the broadcast reception device, transmits a description request to the broadcast reception device, and receives a description response from the broadcast reception device. The description response is used for connecting the companion device with the broadcast reception device. The control unit transmits a request for the broadcast service and receives a response from the broadcast reception device. The response includes device capability information signaling a capability of a device necessary for presenting a media component included in the broadcast service. The control unit receives the media component when a capability of the companion device satisfies the device capability that the device capability information includes.