Transmission Device Frame Sequence Numbering for Broadcasting Efficiency
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Solution Overview
Problem
The existing technique for transmitting variable-length packets in digital broadcasting systems reduces transmission efficiency due to the inclusion of flags indicating the head position of variable-length packets in header information, which shortens effective data length and impairs data transmission.
Innovation Solution
A transmission system that assigns frame sequence numbers to subframes based on their order within a main frame, allowing data packets to be arranged and extracted efficiently without the need for explicit position indicators, thereby optimizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flags indicating head position of variable-length packets are included in header information, then data packet identification is enabled, but transmission efficiency is reduced due to shortened effective data length
Solution Approach 1:
The patent extracts and removes the unnecessary flag information from the data structure. By eliminating the head position indication flags from both the header and each third packet, the effective data length is increased while maintaining packet identification capability through alternative means (direct positioning without flags).
Solution Approach 2:
The patent changes the data structure parameters by removing the flag fields. Instead of using flags to indicate head positions, the system uses a different approach where the head position is inherently determined by the data structure organization, thereby increasing the effective data payload without compromising identification reliability.
2Reliability
If information indicating head position is inserted into each third packet, then variable-length packet reconstruction is enabled, but data transmission capacity is reduced by the amount of position information
Solution Approach 1:
The patent extracts and removes the head position information fields from each third packet. The packet reconstruction capability is maintained through the inherent structure of the divided packets and their sequential arrangement, eliminating the need for explicit position indicators in each packet.
Solution Approach 2:
The patent changes the packet structure by removing position indicator parameters. The reconstruction process relies on the fixed structure and sequential ordering of divided packets rather than embedded position information, thereby maximizing the data transmission capacity of each packet.
Data Source
AI summary
The present technology relates to a transmission device, a reception device, a transmission system, and a transmission method capable of improving transmission efficiency of subdata added to main data.A transmission device includes a frame sequence number setting unit that, on the basis of a frame number indicating an order of a subframe in a main frame, assigns to the subframe a frame sequence number indicating an order of the subframe in a frame sequence including a plurality of the subframes, and a multiplexing unit that arranges a data packet at a predetermined position in the subframe on the basis of the frame sequence number. The present technology can be applied to a CCU, for example.