Broadcast Signal Signaling for 3D Service Differentiation
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Solution Overview
Problem
Current broadcast systems lack a standardized method to differentiate and handle 3D services effectively, leading to confusion between 2D and 3D services, and existing receivers struggle to appropriately process 3D video data for stereoscopic display.
Innovation Solution
A broadcast signal transmitting and receiving apparatus is developed to provide a method for smoothly converting between 2D and 3D services, using HEVC coding scheme, and includes signaling information for identifying and processing 3D video data, enabling appropriate handling and display of 3D content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a 3D service is provided without standardized signaling, then the service can be transmitted, but the receiver cannot appropriately handle and differentiate it from 2D services
Solution Approach 1:
The transmitter performs preliminary signaling of 3D service information in the broadcast signal before transmission. This includes embedding service type indicators and 3D video data characteristics in advance, allowing the receiver to identify and prepare for 3D service handling before actual playback, thus preventing confusion with 2D services.
Solution Approach 2:
A standardized signaling mechanism acts as an intermediary between the 3D video data and the receiver processing system. This signaling layer translates 3D service characteristics into recognizable formats that receivers can interpret, enabling proper differentiation and handling without requiring complex direct communication between transmitter and receiver.
2Adaptability or versatility
If various 3D service formats are provided without standardization, then service diversity is achieved, but receiver compatibility and appropriate processing become difficult
Solution Approach 1:
The signaling system uses configurable parameters to describe different 3D service formats (such as frame packing arrangement, view identification, and temporal structure). By standardizing how these parameters are signaled rather than standardizing the formats themselves, the system maintains format diversity while enabling receiver compatibility through uniform parameter interpretation.
Solution Approach 2:
A universal signaling framework is implemented that can accommodate multiple 3D service formats through a common structure. This framework provides multi-functionality by handling various 3D formats (side-by-side, top-bottom, frame sequential, etc.) through a single standardized interface, making receiver processing easier while maintaining service diversity.
3Device complexity
If 2D and 3D services are transmitted without differentiation signaling, then transmission simplicity is maintained, but service identification and conversion capabilities are lost
Solution Approach 1:
The broadcast signal is segmented into distinct components: 2D video data, 3D video data, and service type signaling information. This segmentation allows simple transmission of each component while the signaling portion provides the necessary differentiation information for service identification and conversion, resolving the contradiction between transmission simplicity and adaptability.
Data Source
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AI summary
The present invention relates to a broadcast signal transmitting device for transmitting broadcast signals, a broadcast signal receiving device for receiving broadcast signals, and a method for transmitting and receiving broadcast signals. The broadcast signal receiving device, according to the present invention, comprises: a receiving unit for receiving a three-dimensional television (3DTV) service video stream, which is frame-compatible with a video component, and broadcast signals which include signaling information for signaling the video stream, wherein the signaling information includes a first piece of information for indicating whether the video stream is in a frame-compatible 3DTV video format or a high definition television (HDTV) format, service type information which indicates whether a service type of the video stream is a high-efficiency video coding (HEVC) service, and a plurality of component descriptors which indicate the type of the HEVC service to the video stream; a signaling information processing unit for identifying the type of the video stream, based on the signaling information; and an output unit for outputting the video stream in the 3DTV video format or the HDTV video format, based on the type of the video stream.