A video processor for LED full-color display screen

Abstract

A video processor for LED all color screen, which contains video process main control module, microprocess unit, read only memory module and frame buffer module, signal interface, output interface module and communication interface, series communication module, power supply module and interface, wherein the microprocess unit respectively connected with ROM module and series communication module which is connected with communication interface, power supply module connected with power interface and providing power to all equipment, said invention reinforces display function.

Description

technical field [0001] The invention relates to the technical field of video signal processing and image display, in particular to the video signal collection, processing and display technology applicable to LED color display screens. Background technique [0002] Before playing video images, LED video full-color display screens need special processing for video signals. Since there is no image source and standard specifically for LED full-color displays, this work has been done by PC-based multimedia video cards for a long time. The image and video signals are processed by the multimedia card, displayed on the computer monitor screen, and synchronously sent to the LED display screen for display. [0003] The disadvantages of multimedia video cards are: [0004] 1) The environment attached to the computer: If it does not pass through the computer, the video source signal cannot be directly displayed on the LED display screen, which is unreasonable. [0005] 2) Rough video...

AI Technical Summary

Problems solved by technology

[0004] 1) The environment attached to the computer: without the computer, the video source signal cannot be directly displayed on the LED display screen, which is unreasonable

[0005] 2) Rough video signal processing: Due to the functional limitation of the main control chip of the multimedia card, the multimedia card only completes the basic conversion function in the process of converting the video signal from analog to digital, from interlaced scanning to progressive scanning However, there are still many deficiencies in the details of the display function and image quality reproduced on the LED display, such as: low A / D conversion accuracy; lack of dynamic instantaneous luminous compensation, dynamic chromaticity improvement, etc. Enhanced processing; screen overlay without text / images etc.

[0006] 3) Not suitable for upgrading: Since the multimedia card is not a component product specially used for LED display screens, it does not meet the application development requirements of LED display screens, and the software is not easy to upgrade, making its functions significantly behind the development of market demand

[0007] 4) The main control chip used in some multimedia cards has some congenital circuit design defects, which will also affect the quality of LED display for no reason.

However, there are still disadvantages such as dependence on the computer, RGB signal grayscale adjustment levels, or low performance of analog-to-digital conversion accuracy, and the image detail processing is affected by the main control chip, and the functions are not perfect.

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