SDI (Serial Digital Interface) high-quality synchronous de-interlacing system and method

Abstract

The invention relates to an SDI (Serial Digital Interface) high-quality synchronous de-interlacing system and method. An MCU (Microprogrammed Control Unit) control module is connected with a first FPGA (Field Programmable Gate Array) module through a synchronous clock bus, thus providing a synchronous clock for the first FPGA module and realizing the synchronization of multiple paths of video signals. At the same time, the first FPGA module opens up an interlaced signal storage area and a progressive signal storage area to realize conversion from an interlaced signal to a progressive signal and complete a de-interlacing operation. The synchronization and de-interlacing among multiple SDI input signals can be realized to ensure the quality of a video picture output from a back end.

Description

technical field [0001] The invention relates to the technical field of video processors, in particular to an SDI high-quality synchronous deinterlacing system and method. Background technique [0002] A video processor is a video data processing device that supports multiple input signals such as VGA, composite video, SDI signal, and digital HDMI. Serial Digital Interface (SDI) is a digital video interface standard formulated by the SMPTE organization, such as SMPTE 259M, SMPTE 292M, SMPTE 372M, etc. The signal decoding synchronization of the traditional SDI system of the video processor adopts a self-synchronization and self-clocking mechanism, which processes the frame data by detecting the specific synchronization word of the demodulated and decoded SDI signal, which results in SDI signals input by multiple SDI input interfaces Without unified synchronization information among them, multiple SDI input signals cannot be synchronized, which leads to out-of-synchronization ...

AI Technical Summary

Problems solved by technology

The signal decoding synchronization of the traditional SDI system of the video processor adopts a self-synchronization and self-clocking mechanism, which processes the frame data by detecting the specific synchronization word of the demodulated and decoded SDI signal, which results in SDI signals input by multiple SDI input interfaces There is no unified synchronization information between them, and multiple SDI input signals cannot be synchronized, which leads to out-of-synchronization of the picture and video spliced ​​by the video processor, affecting customer experience

[0003] In addition, the traditional SDI system does not have the function of deinterlacing (Deinterlace) algorithm. Deinterlacing is to convert interlaced (interlace) video signals into progressive (progressive) progressive scanning Method of video signal

Now the new display devices are all using progressive scan, playing the interlaced image directly on the progressive scan device will produce serious flicker phenomenon, and because of the interlaced signal, only one line has an image in two lines, and the other line is completely black , so the brightness will be reduced by half compared to the progressive signal

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