IR (Infrarot)

The letters IR refer to the abbreviation for infrared. In combination with TV devices, this term refers to a transmission technology that is built into remote controls. Electromagnetic waves are used for communication and transmit signals to the TV set. On this basis, a remote control is possible.

More Information about IR (Infrarot)

Controlling the TV from a distance with infrared

The first remote control using this technology was developed by the Japanese company NEC and introduced to the market in 1980. Its launch replaced the ultrasonic method that had already been developed in the 1950s.

Although the standard has been around for 50 years, the technology is still used today – alongside Bluetooth or Wi-Fi. However, an IR receiver must be installed in the device in order to use it.

Unfortunately, there is a disadvantage: Signals can only be transmitted by direct line-of-sight between the remote control and the TV. Obstacles such as walls or furniture may therefore severely impair the transmission. In addition, interferences with other devices in the room that also use infrared signals can occur.

Advantages and disadvantages of IR

Inexpensive to manufactureLine of sight required
Low breakdown susceptibilityLimited range
Simple integrationSensitive to light sources
Compatibility with many devicesNo bidirectional communication
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