Digital Visual Interface (DVI) is a video interface standard designed to transmit uncompressed digital images. It is currently widely used in display devices such as LCDs and digital projectors. The DVI interface can send uncompressed digital video data to the display device.

The display device uses the DVI interface with the following major advantages:

1. Fast speed

DVI transmits digital signals. Digital image information does not need to be converted and will be directly transmitted to the display device. Therefore, the tedious conversion process of digital → analog → digital is reduced, which greatly saves time. Therefore, it is faster and effectively eliminates the phenomenon of ghosting. In addition, when using DVI for data transmission, the signal is not attenuated, and the color is purer and more realistic.

2. Clear picture

The computer transmits binary digital signals. If you use the VGA interface to connect to the LCD, you need to convert the signal into R, G, B primary color signals and horizontal and field synchronization signals through the D/A (digital/analog) converter in the graphics card. These signals are transmitted to the LCD through the analog signal line. The corresponding A/D (analog/digital) converter is required to convert the analog signal into a digital signal again before the image can be displayed on the LCD. In the above-mentioned D/A, A/D conversion and signal transmission process, signal loss and interference are inevitable, resulting in image distortion or even display errors. The DVI interface does not need to perform these conversions, avoiding signal loss, and greatly improving the clarity and detail expression of the image.

3. Support HDCP protocol

The DVI interface can support the HDCP protocol, laying the foundation for watching copyrighted high-definition videos in the future. However, if you want the graphics card to support HDCP, it is not enough to have a DVI interface alone. You need to install a dedicated chip and pay a high HDCP certification fee. Therefore, there are not many graphics cards that truly support the HDCP protocol.

HDCP

The signal is the same as DVI in terms of interface form, pin definition, data format, etc., but for confidentiality reasons, the data is encrypted to meet the HDCP protocol requirements. Considering that this is only a difference at the protocol level, we can consider the two as equal.

The impact of HDMI on DVI

Compared with the existing DVI, which is also a digital interface, the biggest change of HDMI is that it integrates video and audio transmission, and the interface is small in size, with advantages in flexibility and convenience. The HDMI interface solves two outputs with only one line, which will greatly simplify the connection of the device and make the desktop neater.

Combining this advantage of DVI, the DVI interface can be applied to the display screen of military equipment.

The following are some of the main applications of the display screen with DVI interface in military equipment:

1. Command and control system

The display screen plays a core role in the command and control center, and is used to display battlefield situations, transmit commands, monitor troops and equipment status, etc. Commanders can obtain real-time battlefield information through the display screen to make decisions and commands.

2. Cockpits and control panels

In the cockpits of aircraft, tanks, armored vehicles and ships, displays are used to provide key data such as navigation information, weapon status, flight parameters, etc. The cockpits of modern fighters and warships are usually equipped with multi-function displays (MFDs) that can integrate data from various sensors and systems.

3. UAV and robot control

Operating drones and ground robots requires high-resolution displays to monitor their camera views, navigation paths and mission status. The display can display the camera image of the drone in real time, helping the operator to perform precise control and mission execution.

4. Communication equipment

In military communication equipment, the display is used to display communication status, encrypt information and transmit data. The display in portable communication equipment can help soldiers communicate and exchange information effectively on the battlefield.

5. Combat vehicles

Armored vehicles and tanks are usually equipped with display screens inside to display battlefield situations, control weapon systems and monitor vehicle status. Advanced tanks are even equipped with panoramic display systems that provide 360-degree environmental monitoring.

6. Reconnaissance and surveillance systems

Reconnaissance equipment and surveillance systems use display screens to display captured images and videos in real time to help analyze enemy activities and battlefield conditions. These displays can be installed on ground stations, command vehicles or portable devices.

7. Training simulators

In military training simulators, displays are used to create realistic training environments, including flight simulations, combat simulations and tactical exercises. High-resolution and high-refresh-rate displays can provide realistic visual effects and improve training effectiveness.

8. Personal soldier equipment

Modern soldier equipment is increasingly using helmet displays (HMDs) and other wearable display devices to provide real-time information and augmented reality functions to help soldiers improve combat efficiency in complex battlefield environments.

9. Maintenance and diagnosis

Maintenance personnel use portable display devices to read and analyze the status and fault information of military equipment and perform equipment maintenance and repair. Displays can provide detailed diagnostic information and maintenance instructions to improve maintenance efficiency and accuracy.

The application of displays in military equipment has greatly improved the efficiency, accuracy and flexibility of military operations, and also provided broad space for the development of future military technology.

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