Display device and display method for serial digital interface (SDI) signals

Abstract

The invention discloses a display device and a display method for SDI signals. The display device comprises an SDI, an SDI deserializing unit achieved by a field-programmable gate array (FPGA), a video signal processing chip and a display screen, wherein the SDI deserializing unit is used for converting serial SDI signals into parallel SDI signals, detecting and obtaining the format of video content signals, then inquiring a format list of the video content signals to obtain a format index, and writing the format index of the video content signals to a serial peripheral interface register; and the video signal processing chip is used for reading the format index in the serial peripheral interface register, configuring parallel SDI signal processing parameters according to the format index, and converting the parallel SDI signals into video signals capable of being displayed by the display screen. The display delay time of the SDI signals is reduced through the display device and the display method.

Description

technical field [0001] The present invention relates to the field of video signal display processing, in particular to a display device and a display method for a serial digital interface (Serial Digital Interface, SDI) signal. Background technique [0002] Currently widely used video signal processing chips (for example, liquid crystal display (LCD) processing chips) can generally be used in consumer electronics, industrial control, security control, medical monitoring, radio and television video display and other audio-visual fields. Integrated large-scale video signal processing chip, which can receive and process various common interface signals, such as analog video interface (CVBS), S-terminal video interface (S-VIDEO), component interface (YPBPR), high-definition multimedia Interface (HDMI), Digital Video Interface (DVI) and Video Graphics Array Interface (VGA), etc. [0003] With the rapid development of video display technology, the coverage of video signal display...

AI Technical Summary

Problems solved by technology

However, since the video signal processing chip needs to process all formats of all received signals, there are nearly 100 types of signals, resulting in a long search time, which is about 1 second or more, and once the search fails, it is considered It is an invalid signal that cannot be recognized, which makes the signal detection error

[0006] The above-mentioned signal detection process and signal locking process are all carried out by video signal processing chips, resulting in a heavy burden, and the display delay time of serial data signals is relatively long

Especially for a display with two SDI signal interfaces, or to replace the frame of the SDI signal source by plugging and unplugging the connector, it is required that the signal can be displayed quickly after switching. At the same time, because the format of the video content signal carried in the SDI signal is also Constant changes also require the display device to be able to quickly switch between displays, but the existing SDI signal display devices are difficult to meet such needs

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