# A High-Frame-Rate Display Method for Multiple Synergistic Digital Micromirror Devices Involving Large Target Surfaces

## TL;DR

This paper introduces a method to combine multiple DMDs for larger display surfaces and higher frame rates, useful for aerospace simulations.

## Contribution

A novel method to synchronize multiple DMDs for large target surfaces and high frame rates using PWM and synchronization signals.

## Key findings

- The method achieved a target surface four times larger than a single DMD.
- A 400 Hz frame rate was maintained with synchronization errors below 10 ns.
- The approach provides an effective infrared scene simulation solution.

## Abstract

This study proposed a large-target-surface and high-frame-rate display method using multiple Digital Micromirror Devices (DMDs) for high-resolution, high-frame-rate aerospace applications. DMDs offer high frame rates and contrast ratios, but their surface size is constrained. By employing Pulse Width Modulation (PWM) with synchronization signals for grayscale modulation and synchronizing multiple DMDs, this method achieved a target surface four times larger than a single DMD at 400 Hz frame rate, with synchronization errors below 10 ns. This enhances simulation efficiency and provides an effective infrared scene simulation solution.