LED (Light Emitting Diode) display screen control device and control method capable of randomly arranging pixels

Abstract

The invention provides an LED display screen control device and control method capable of carrying out pixel random arrangement, and the device comprises a decoding chip which is used for decoding a video source signal into a TTL video signal; a coding chip which is used for coding the VESA standard signal into a differential signal; a SRAM array which is used for storing TTL video signals; a SPIFLASH which is used for storing an address table; a SDRAM which is used for transferring the address table; an FPGA module which is used for randomly reading the video pixel data stored in the SRAM array according to the address table; and a MCU which is used for configuring and monitoring the coding chip, the decoding chip and the FPGA module. According to the method, the high-bandwidth characteristic of the SDRAM during continuous access and the high-bandwidth characteristic of the SRAM during random access are fully combined, the output picture is changed in the mode that the address table is issued through software, and the display requirement of multi-scene change is met.

Description

technical field [0001] The invention relates to the field of LED display control, in particular to an LED display control device and control method capable of arbitrarily arranging pixels. Background technique [0002] LED display is a new type of information display media, which is a flat display screen composed of light-emitting diode dot matrix blocks or pixel units. There are many styles of LED creative display screens: arc, circle, curved surface, square hexahedron, cross screen, letter, triangular screen, oval screen, etc. Its size and size can be customized according to requirements. [0003] Compared with conventional LED displays, LED creative displays are more suitable for users with special needs. Currently, they are mainly used in performing arts venues, outdoor media, exhibition hall squares and other environments. Since LED creative display screens have different appearances and structures, the technical requirements for manufacturers are also more stringent. ...

AI Technical Summary

Problems solved by technology

However, this solution has great limitations. The processing capability and storage bandwidth of the sending card determine that it cannot process pixels in the entire range of video sources; and the receiving card usually receives pixel data that has been segmented. Part of the area, so even if the LED arbitrary point is supported, the point range is also very limited

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