Serial Digital Interface Video Data Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies are inadequate for efficiently transmitting ultra-high-definition video signals with a high number of pixels beyond the HD-SDI format, as they fail to effectively multiplex and transmit high-volume video data across multiple channels using existing serial digital interfaces.
Innovation Solution
The proposed solution involves compressing video data to multiplex it into multiple channels of serial digital interfaces, ensuring that at least the lower 2 bits of the upper m bits are different, and using error detection codes stored in specific data areas, with alternating channel multiplexing and scrambling to transmit the data efficiently across 10.692-Gbps interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing serial digital interfaces (10.692-Gbps) are used to transmit HD-SDI format data, then the transmission is reliable and standardized, but the capacity is insufficient to transmit ultra-high-definition video signals with high number of pixels
Solution Approach 1:
The patent merges multiple HD-SDI channels (first channel and second channel) into a single 10.692-Gbps serial digital interface. By multiplexing video data from multiple channels and combining them with error detection codes in the video data areas, the system achieves the transmission capacity of ultra-high-definition video signals while maintaining compatibility with existing standardized interfaces
Solution Approach 2:
The patent transitions from parallel HD-SDI channel transmission to serial digital interface transmission by utilizing time-division multiplexing. This dimensional change allows the system to pack multiple channels of data into a single high-speed serial stream, effectively increasing the transmission capacity without requiring new physical interface standards
2Quantity of substance
If multiple HD-SDI channels are multiplexed into 10.692-Gbps stream, then the transmission capacity increases, but forbidden codes may be generated causing transmission errors
Solution Approach 1:
The patent converts the potential harm of forbidden codes into a beneficial error detection mechanism. By storing error detection codes in the video data areas and using them to verify transmitted data, the system not only prevents transmission errors but also leverages the code structure to identify and correct issues, turning a potential problem into a reliability feature
Solution Approach 2:
The patent performs preliminary error detection by storing error detection codes in the video data areas before transmission. This preliminary action allows the receiving end to verify data integrity in advance and correct errors before they propagate through the transmission system, ensuring reliable data delivery even when multiplexing multiple channels
3Productivity
If compressed video data is multiplexed into multiple channels, then the transmission efficiency improves, but the complexity of data processing increases
Solution Approach 1:
The patent segments the video data into compressible units that can be efficiently multiplexed into multiple channels. By dividing the data stream into manageable segments and applying compression algorithms to each segment, the system achieves high transmission efficiency while maintaining processing complexity at acceptable levels through modular operation
Solution Approach 2:
The patent changes data parameters through compression and multiplexing operations. By transforming the video data into a compressed format and adjusting the data structure for multiplexing, the system achieves higher transmission efficiency. The parameter changes are applied systematically through standardized compression algorithms and multiplexing protocols, managing complexity through established procedures
Data Source
AI summary
In a signal transmitting apparatus, an upper m bits (m≧8) are defined to have the same value in a forbidden code in video data areas channels included in serial digital interfaces of one or plural channels of N bits (N≧10). A mapping unit makes at least a lower 2 bits among the upper m bits different from each other, multiplexing video data of an upper m−2 bits included in compressed data compressed to the amount of data of the one or plural channels of the serial digital interfaces, in which the number of pixels in one frame is equal to or more than that of pixels defined by an HD format into upper m−2 bits in the video data areas of the first and second channels, and multiplexing video data of lower 2 bits in the compressed data into lower N−m bits in the video data areas of the first and second channels.