Question
Download Solution PDFTV remote controls commonly use _______ to communicate with the TV.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Infrared:
- It is a wireless technology that uses infrared radiation for wireless transmission between computer devices as well as many handheld remotes for TVs and video and stereo equipment.
- Infrared adapters are installed on many laptops and smartphones.
- The signal between a remote control handset and the device it controls consists of pulses of infrared light, which is invisible to the human eye but can be seen through a digital camera, video camera, or a phone camera.
- IR remotes use LED lights to transmit their infrared signals.
- This results in a few limitations of the technology.
- Since light is used to transmit the signal, IR remotes require line-of-sight, which means we need an open path between the transmitter and receiver.
- Therefore, IR remotes won't work through walls or around corners.
- They have a limited range of about 30 feet.
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