Video Transmission Apparatus Hierarchy Group Segmentation
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Solution Overview
Problem
Existing technologies face challenges in enabling satisfactory decoding processing on the reception side, particularly due to limitations in decoding capability, which restricts the playback of high frame frequency moving images without requiring new receivers.
Innovation Solution
A transmission apparatus that sorts image data into multiple hierarchies, encodes it, and generates video data. This apparatus includes an identification information insertion unit that divides the hierarchies into groups and inserts identification information into packets, allowing the reception side to selectively decode based on decoding capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hierarchical encoding with temporal ID is used to enable high frame frequency services, then the service quality is improved, but the receiver cost increases
Solution Approach 1:
The patent segments the bitstream into multiple hierarchy groups (HG0, HG1, HG2, etc.) based on temporal ID values, allowing receivers to selectively decode only the necessary hierarchy groups according to their capabilities. This segmentation enables low-cost receivers to handle basic frame frequencies while high-end receivers can access higher frame frequency content without requiring all receivers to be expensive.
Solution Approach 2:
The patent introduces hierarchy group identification information as a new parameter in the bitstream header, which allows receivers to identify and select appropriate hierarchy groups based on their decoding capabilities. This parameter change enables flexible adaptation of the service to different receiver types without requiring separate service streams.
2Adaptability or versatility
If multiple high and low frame frequency services are provided simultaneously, then service compatibility is improved, but service complexity increases
Solution Approach 1:
The patent merges multiple hierarchy groups representing different frame frequency services into a single integrated bitstream. Instead of maintaining separate service streams, all hierarchy groups are combined into one bitstream with embedded identification information, allowing receivers to select and decode only the appropriate portions based on their capabilities, thereby reducing service complexity while maintaining compatibility.
3Ease of manufacture
If low-cost receivers are dedicated to low frame frequency services, then manufacturing cost is reduced, but future service adaptability is limited
Solution Approach 1:
The patent implements a dynamic service architecture where the bitstream contains hierarchical encoding with identifiable hierarchy groups. Low-cost receivers are manufactured with the capability to decode specific hierarchy groups (e.g., HG0 for low frame frequency), while the same bitstream structure allows these receivers to potentially access higher hierarchy groups if needed. This dynamic structure enables future service upgrades without requiring hardware changes, as the adaptation is achieved through software-level selection of hierarchy groups.
Data Source
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AI summary
To enable satisfactory decoding processing corresponding to a decoding capability on a reception side. Image data of pictures constituting moving image data are sorted into multiple hierarchies, image data of pictures of each of the sorted hierarchies are encoded, and video data including the encoded image data of the pictures of each of the hierarchies is generated. A container of a predetermined format including the video data is transmitted. The multiple hierarchies are divided into a predetermined number of hierarchy groups, the predetermined number being two or more, and identification information for identifying a hierarchy group to which encoded image data of each picture included in the video data belongs is inserted into a packet as a container of the video data.