Transport Stream Payload Stuffing Without Adaptation Field Headers
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Solution Overview
Problem
The use of adaptation field headers in digital broadcast systems reduces data transmission efficiency due to occupied payload space, degrading the overall data transmission efficiency in systems like the U.S-oriented 8-VSB standard.
Innovation Solution
A transmission stream generating device that stuffs supplementary data into the payload area of packets without adaptation fields, using an adapter unit to construct packets with adaptation fields and a stuffing unit to insert supplementary data, thereby improving data transmission efficiency by eliminating the need for adaptation field headers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adaptation field headers are used to transmit supplementary data, then data transmission capability is improved, but data transmission efficiency deteriorates due to occupied payload space
Solution Approach 1:
The patent extracts the adaptation field header (a fixed 2-byte structure) from the data transmission path and eliminates it entirely. Instead, supplementary data is directly inserted into the payload area of transport packets without requiring an adaptation field header, thereby removing the overhead and improving transmission efficiency while maintaining the capability to transmit supplementary data
Solution Approach 2:
The patent inverts the conventional approach by not using adaptation fields for supplementary data transmission. Instead of adding structure (adaptation field header) to enable supplementary data transmission, the patent removes the structure entirely and uses the payload area directly, achieving the opposite of the conventional method while solving the efficiency problem
Data Source
AI summary
A transmission stream (TS) generating apparatus includes an adaptor which receives general data and generates a stream having a plurality of packets, and which provides adaptive field in some of the plurality of packets, and an inserter which inserts additional data into all the payload areas of some of the plurality of packets that are not provided with the adaptive fields. Because additional data is transmitted, without requiring adaptive field header in certain packet, a data transmission rate is increased.