Broadcast Signal Service Description Table for HDR HFR Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current broadcast signal transmission methods lack efficiency in transmitting and receiving information that identifies High Dynamic Range (HDR) or High Frame Rate (HFR) services, and fail to accurately reflect the content producer's intentions for video decoding.
Innovation Solution
The method involves encoding UHD video data in HEVC and generating a broadcast signal that includes a service description table (SDT) with service type information indicating whether HDR or HFR is backward-compatible or non-backward-compatible, using specific values for component descriptors to identify the type of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If service information is transmitted without structured identifiers for HDR/HFR, then transmission simplicity is maintained, but transmission efficiency and service identification accuracy deteriorate
Solution Approach 1:
The service information is segmented into structured components including service type information field, component descriptor, and specific HDR/HFR identifier fields. This segmentation allows efficient identification and processing of service characteristics without transmitting redundant data, thereby improving transmission efficiency while maintaining organized information structure.
Solution Approach 2:
The invention introduces specific parameter fields (service_type, stream_content, component_type) that change based on the service characteristics. By encoding HDR/HFR service identification into discrete parameter values rather than free-text descriptions, the system achieves more efficient transmission and clearer service differentiation.
2Measurement precision
If generic service description is used, then information structure simplicity is maintained, but measurement precision of service characteristics deteriorates
Solution Approach 1:
The service information structure applies local quality by providing specific identifier fields only where needed. The service_type field and component_descriptor are present only for services requiring HDR/HFR identification, allowing precise service characterization without adding complexity to all service descriptions uniformly.
Solution Approach 2:
The component_descriptor acts as an intermediary structure that bridges generic service information and specific HDR/HFR characteristics. It provides a standardized interface for identifying service types while maintaining flexibility in describing specific service features, thereby improving identification accuracy without directly increasing overall system complexity.
3Manufacturing precision
If video decoding is performed without content producer intention information, then decoding simplicity is maintained, but video quality and intention reflection deteriorate
Solution Approach 1:
The service type information and component descriptors are prepared and transmitted in advance along with the video stream. This preliminary action provides the decoder with all necessary information about content producer intentions before decoding begins, enabling high-quality decoding that reflects the original creative intent without requiring complex real-time analysis.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to an apparatus and a method for transmitting and receiving broadcast signals including an HDR UHD video service. An apparatus for transmitting broadcast signals according to one embodiment of the present invention comprises: a video encoder for encoding ultra high definition (UHD) video data into high efficiency video coding (HEVC) to thereby generate an HEVC UHD video stream; a multiplexer for generating a broadcast signal including the generated HEVC UHD video stream and service information (SI), wherein the service information includes a service description table (SDT); and a transmitter for transmitting the generated broadcast signal, wherein the service type information included in the SDT may indicate a UHD video service to which at least one of a backward compatible (BC) high dynamic range (HDR) or a high frame rate (HFR) is applied, or a UHD video service to which at least one of non-backward compatible (NBC) HDR or HFR is applied.