Multi-picture splitter and splitting method based on fpga for high-definition and standard-definition mixed broadcasting

Abstract

The present invention provides an FPGA-based high-definition and standard-definition mixed broadcast multi-picture divider, including multiple high-speed serial interface receiving modules, multiple auxiliary data extraction and display modules, multiple video scaling modules, high-speed serial interface receiving modules, Auxiliary data extraction and display module, video zoom module cooperate with each other to form multiple groups, respectively process multiple SDI video signals; multiple video zoom modules are connected with video splicing module respectively; video splicing module is connected with storage module and HDMI sending chip required signals module as well as the high-speed serial interface transmit module connection. The invention also provides an FPGA-based multi-picture division method. The present invention selects FPGA as the main chip, adopts an external memory, uses a cubic interpolation method to zoom the video, and simultaneously controls the time for writing multiple videos into the memory, so that the divider only needs one memory and does not need to use a paid IP core. Greatly reduce costs.

Description

technical field [0001] The invention relates to a broadcast-level multi-picture splitter, in particular to an FPGA-based high-definition and standard-definition mixed broadcast multi-picture splitter with an auxiliary data extraction function and a splitting method. Background technique [0002] In recent years, in the radio and television market, high-definition video is gradually replacing standard-definition video. However, due to the limitations of equipment and other reasons, high-definition and standard-definition will coexist for a long time in the future. The solution of FPGA+DSP uses DSP to scale and process each channel of video, and then sends the video to the FPGA so that the video can achieve the purpose of splitting the screen output, but such a combination of multiple chips may lead to a decrease in system reliability. The multi-chip solution will increase the area of ​​the PCB printed circuit board, resulting in disadvantages such as large product size, poor ...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems of system instability and high cost in existing solutions, the present invention proposes an FPGA-based high-definition and standard-definition mixed broadcast multi-screen splitter, which is convenient to implement, more stable in system, and lower in cost. Low

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