What is an infrared port, an infrared interface of an infrared interface

The concept of infrared, it is estimated that many people basically stay on the basis of the term infrared, and for the infrared network, it can be said that they know nothing. Now I will introduce you to the infrared network. Infrared networks, like wireless networks, fall under the category of wireless networks, and wireless wireless network technology makes it possible to access data from a wider range of devices around the world.

Wireless networks can reduce or eliminate the expense of expensive fiber and cables, and provide backup capabilities for wired networks. To ensure that wireless networks and devices are compatible, economical and secure, organizations and groups with a special interest are developing standards for wireless communications. For example, data can be transmitted through an infrared connection to computers, printers, cameras, and other devices that use the IRDA protocol.

In addition, you can use infrared-enabled mobile** to establish a dial-up connection to the Internet or corporate network, and more.

1. Overview. To understand what an infrared network is, we must first know the following new noun concepts:

1 Infrared communication.

Infrared communication uses infrared rays to transmit data. Infrared light is also commonly used for remote control of televisions and VCRs. In computers, infrared communication offers another alternative to cables and floppy disks.

Infrared communication allows computers to be connected to other computers, devices, and household appliances in a point-to-point, low-cost manner. Many mobile** are installed with an infrared (IR) blaster that enables them to connect to computers that are already connected to a dial-up network.

2 Infrared execution.

Also an important concept is infrared execution, which performs infrared data transfer according to the standards and protocols of the Infrared Data Alliance (IRDA). These standards are used to support low-cost components and low-power requirements, and infrared devices only need to be mutually representable to enable connectivity. Infrared transceivers are now installed on almost all modern notebooks.

For computers that do not have a built-in IR transceiver, an external IR transceiver can be installed. IRDA is a half-duplex, low-range data transmission technology. The IRDA protocol specifies steps to support link initialization, device address lookup, connection initiation and data rate contracting, information exchange, disconnection, link closure, and device address conflict resolution.

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Regarding the meaning of infrared interface, computer terminology is explained.

IRDA is the English abbreviation of IRDA, which is the English abbreviation of Infrared Data Association. An IRDA-enabled PDA can wirelessly transfer digital** to other devices that support IRDA communication, such as laptops or printers.

Infrared is an electromagnetic wave with a wavelength between 750mm and 1mm, its frequency is higher than microwave and lower than visible light, and it is a light that cannot be seen by the human eye. Due to the short wavelength of infrared and the poor diffraction ability of obstacles, it is more suitable for point-to-point linear data transmission in occasions that require short-distance wireless communication. The Infrared Data Association (IRDA) limits the wavelengths of light used in infrared data communication to between 850 nm and 900 nm.

It is very simple to use the wireless Internet on the mobile phone equipped with the infrared interface, no need for a cable and PC card, as long as the infrared connection protocol is set, you can directly access the Internet. Used to replace point-to-point cable connections.

The new communication standard is compatible with earlier communication standards.

Small angle (within 30 degree cone angle), short distance, point-to-point straight line data transmission, strong confidentiality.

The transmission rate is high, and the 4M rate FIR technology has been widely used, and the 16M rate VFIR technology has been released. Infrared communication technology is suitable for low-cost, cross-platform, point-to-point high-speed data connectivity, especially in embedded systems.