Broadcasting Line Content Synchronization via Delayed Transfer Clock
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Solution Overview
Problem
Existing systems face challenges in synchronizing real-time broadcasting and line content for high-quality video transmission, particularly due to packet delay and loss, which disrupts the temporal synchronization of video streams and increases system scale requirements in terminal devices.
Innovation Solution
The method involves generating line parity packets and broadcasting data packets with a delayed transfer clock time for broadcasting content, allowing for improved quality of line content transmission and reduced storage capacity in terminal devices by starting decoding with received line data and parity packets, while controlling packet delay and loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If broadcasting content is transmitted in real-time without delay, then transmission speed is improved, but temporal synchronization with line content deteriorates
Solution Approach 1:
The broadcasting content is delayed by a predetermined time to allow line content packets to be received and decoded first. This preliminary delay action ensures that when broadcasting content arrives, the terminal device is already prepared with the necessary decoding capabilities and synchronization timing, resolving the temporal synchronization issue between real-time broadcasting and line content
Solution Approach 2:
The system dynamically adjusts the transmission timing of broadcasting content based on the reception status of line content packets. By making the broadcasting content transmission timing flexible rather than fixed, the system can adapt to varying network conditions and packet arrival times, maintaining temporal synchronization while preserving real-time transmission characteristics
2Reliability
If line content is transmitted with error correction packets, then reliability is improved, but device complexity increases
Solution Approach 1:
The line content transmission is segmented into data packets with associated parity packets for error correction. By dividing the content into manageable packet units rather than transmitting as a single stream, the system can apply error correction selectively to individual packets, improving reliability while keeping the terminal device's processing complexity manageable through modular packet handling
Solution Approach 2:
Parity packets serve as intermediary elements that facilitate error correction without requiring complex decoding algorithms in the terminal device. These intermediary packets carry redundant information that enables simple error detection and correction operations, enhancing transmission reliability while maintaining device simplicity
3Stability of the object's composition
If broadcasting content is delayed for synchronization, then temporal synchronization is improved, but loss of time increases
Solution Approach 1:
Instead of delaying all broadcasting content uniformly, the system applies partial delay only to the extent necessary for synchronization with line content. This partial action approach delays broadcasting content by the minimum required time to achieve temporal alignment, avoiding excessive delay while maintaining synchronization between broadcasting and line content streams
Data Source
AI summary
Provided is a method for transmitting a broadcasting content and a line content, the broadcasting content and the line content being synchronously displayed, the method including: generating a line parity packet from a plurality of line data packets in each of which the line content is stored; transmitting the line data packet and the line parity packet through a communication line; and transmitting a plurality of broadcasting data packets in each of which the broadcasting content is stored, from a base station using a broadcasting wave, a transfer clock time of the broadcasting content being delayed by a predetermined time compared with a transfer clock time of the line content. At this point, video quality can be improved when the real-time broadcasting program content and the real-time line content are simultaneously displayed.