Design and Implementation of UHD Multi-channel Signal Generation System with Seamless Video Switching 


Vol. 45,  No. 5, pp. 926-932, May  2020
10.7840/kics.2020.45.5.926


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  Abstract

Multi-channel signal generation system that supports UHD-level ultra-high definition video is essential for broadcasting service that handles various contents. The multi-channel signal generation system can be configured simply by interlocking a multiple of single signal generation systems and one matrix switcher. Such an interlocking system has the advantage of simplicity, but an data rate of 9 Gbps or more per channel is required for processing a video signal between the signal generation system and the matrix switcher, which not only causes display output problems due to the quality of the cable connection between devices, but also makes it unstable when switching the matrix switcher with asynchronous multi-input signals. It may cause screen cut off. In this paper, multiple signal generation systems are modularized to enable independent operation, and matrix switchers are designed as FPGA (Field Programmable Gate Array) single chip capable of high-speed video processing to implement multi-channel signal generation system combining them. This system can reduce the video data transmission rate by 40% compared to the existing system by transmitting the video data from which the duplicated color data is removed from the signal generation module to the matrix switcher and adding the color data removed from the final display output. Memory usage was reduced by 25%. In the display output matrix switcher, the input / output separation design ensures that the output signal remains unchanged even when switching screens. Experimental results show that the proposed system can transmit various kinds of UHD video to four different output ports in real time and that seamless screen switching is possible.

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  Cite this article

[IEEE Style]

Y. Jeon and Y. Kim, "Design and Implementation of UHD Multi-channel Signal Generation System with Seamless Video Switching," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 5, pp. 926-932, 2020. DOI: 10.7840/kics.2020.45.5.926.

[ACM Style]

Yoon-seok Jeon and Young-han Kim. 2020. Design and Implementation of UHD Multi-channel Signal Generation System with Seamless Video Switching. The Journal of Korean Institute of Communications and Information Sciences, 45, 5, (2020), 926-932. DOI: 10.7840/kics.2020.45.5.926.

[KICS Style]

Yoon-seok Jeon and Young-han Kim, "Design and Implementation of UHD Multi-channel Signal Generation System with Seamless Video Switching," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 5, pp. 926-932, 5. 2020. (https://doi.org/10.7840/kics.2020.45.5.926)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880