A system and method for eliminating image deformation of tunnel LED display

Abstract

A system for eliminating image deformation of tunnel LED display screens, including ARM and FPGA, ARM is connected with through-beam tube A and through-beam tube B, ARM is connected with frequency division preset value latch U1 and latch U7, frequency division preset The set value latch U1 is connected to the timing controller U3 and the clock divider U2, the clock divider U2 is connected to the external crystal oscillator, the timing controller U3 and the bit data shift pulser U6, and the timing controller U3 is connected to the frame memory group , a latch U7, a counter U8 with a preset value, a counter U9 for scanning columns and a bit data shift output control circuit U4, the latch U7 is connected with a counter U8 with a preset value, and the counter U8 with a preset value is connected with a bit The data shift pulse counter U6, the bit data shift counter U6 is connected to the bit data shift output control circuit U4, and the bit data shift output control circuit U4 is connected to the LED light strip drive circuit; the present invention is easy to use and has good effect.

Description

technical field [0001] The invention belongs to the field of automation, and in particular relates to a system and method for eliminating image deformation of LED display screens, in particular to a system and method for eliminating image deformation of tunnel LED display screens. Background technique [0002] At present, in the subway tunnels of Beijing, Shanghai, Nanjing and other big cities, there are small sections of subway tunnel advertising screens in operation. With the rise of the domestic subway boom, many qualified cities are building or planning to build more and more subways. Many, the technology of the subway tunnel LED display system can be extended to the tunnel of the railway train, which has the same effect as the subway tunnel. With the development of LED display technology and the integration of automation and computer technology, the tunnel LED display system must be It will be more and more applied and popularized; the LED display screen installed in th...

AI Technical Summary

Problems solved by technology

[0002] At present, in the subway tunnels of Beijing, Shanghai, Nanjing and other big cities, there are small sections of subway tunnel advertising screens in operation. With the rise of the domestic subway boom, many qualified cities are building or planning to build more and more subways. Many, the technology of the subway tunnel LED display system can be extended to the tunnel of the railway train, which has the same effect as the subway tunnel. With the development of LED display technology and the integration of automation and computer technology, the tunnel LED display system must be It will be more and more applied and popularized; the LED display screen installed in the subway tunnel often determines the image display frame frequency and column time interval according to a constant vehicle speed, but it is difficult to achieve the ideal implementation environment in practical applications. Due to the change of vehicle speed, the images seen by the audience in the compartment will be stretched, compressed, even overlapped, and misplaced, which will seriously affect the viewing effect; therefore, a convenient and effective system for eliminating image deformation of tunnel LED display screens is provided and method is very necessary

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