Infrared (IR) Remote Controls

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With most pieces of consumer electronics, from camcorders to stereo equipment, an infrared remote control is usually always included.Video and audio apparatus, computers and also lighting installations nowadays often operate on infra-red remote control.The carrier frequencyof such infra-red signals is typically in the order of around 36 kHz. The control codes are sent in serial format modulated to that 36 kHz carrier frequency (usually by turning the carrier on and off).There are many different coding systems in use, and generally different manufacturers use different codes and different datarates for transmission...

Today, the remote control for electronic devices has become very ordinary. The widespread use of remote control units for TVs, VCRs, and HiFi has been followed by its use for air conditioners, opening doors, and portable player control, etc. So, why not doing the same with the computer? Sometimes, the only interaction between the computer and us is the pressing of the Up/Down or PageUp/Down keys, as in when reading a huge file. It would be better to be able to do a presentation without having to press a key on the computer everytime a new slide is presented. Recently, the MP3 audio files and DVD players have triggered the need to find a more friendly way to control the computer.