Program Stream Switching for Broadcast-IPTV Display Playback
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Solution Overview
Problem
Existing program receiving display devices fail to provide a new watching style that effectively utilizes simultaneous program distribution services, and viewers cannot enjoy data broadcasting during playback of recordings in digital television services.
Innovation Solution
A program receiving display device and control method that integrates digital broadcasting and IPTV services, allowing switching between broadcast and IPTV streams, enabling time-shifted reproduction, variable reproduction speed, and multi-screen display of program content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a program receiving display device supports both digital broadcasting and IPTV services, then the adaptability and versatility of the device is improved, but the device complexity increases
Solution Approach 1:
The program receiving display device is designed to support both digital broadcasting and IPTV services through a unified architecture. The control unit can operate in multiple modes (broadcast mode and IP broadcasting mode) to handle different service types, while the program stream acquisition units are configured to obtain program streams from both broadcast waves and communication networks, enabling a single device to perform multiple functions without requiring separate dedicated devices for each service type
Solution Approach 2:
The device architecture is segmented into distinct functional units: a broadcast program stream acquisition unit for receiving digital broadcasting, an IP broadcasting program stream acquisition unit for receiving IPTV services, and a control unit that manages switching between them. This segmentation allows each unit to be optimized for its specific function while the overall system maintains versatility through coordinated operation of these modular components
2Adaptability or versatility
If the device switches between broadcast and IPTV program streams, then the flexibility of program content selection is improved, but the control complexity increases
Solution Approach 1:
The control unit implements dynamic mode switching capability that allows the device to adaptively change between broadcast mode and IP broadcasting mode based on operational requirements. The control unit can dynamically select which program stream acquisition unit to activate, enabling flexible program content selection from either broadcast waves or communication networks without requiring complex static configuration, thus improving flexibility while keeping control logic manageable through adaptive rather than predetermined control strategies
Data Source
AI summary
The present invention is a program receiving display device adapted for a digital broadcasting service and an IPTV service, comprising: a first program stream acquisition unit that acquires a first program stream that constitutes a program content, based on a broadcast signal from a station selected according to a channel number from received broadcast waves; a second program stream acquisition unit that requests distribution of a second program stream, which is equivalent to the first program stream, via a communication network to a specific distribution server according to link information associated with the channel number and that acquires the second program stream distributed from the specific distribution server in response to the request; and a main control unit that performs control to select at least one of the first program stream or the second program stream, and to display the program content based on the selected program stream on a screen.