Bluetooth is an industrial specification for wireless personal area networks (PANs), also known as IEEE 802.15.1. Bluetooth provides a way to connect and exchange information between devices like personal digital assistants (PDAs), mobile phones, laptops, PCs, printers, digital cameras and video game consoles via a secure, globally unlicensed short-range radio frequency. Bluetooth is a radio standard and communications protocol primarily designed for low power consumption, with a short range (power class dependent: 1 meter, 10 meters, 100 meters) based around low-cost transceiver microchips in each device.
We can use Bluetooth technology to make remote control for normal TVs. Normal TVs use InfraRed technology for remote controlling. IR remotes works only from a very short range and they work only when the receiver and transmitter are in line of sight. Moreover IR offers no security as these signals can be mimicked very easily with the help of a little electronics.
Bluetooth offers a lot of advantages when compared to IR. Bluetooth is an RF technology and hence no line of sight is required. Bluetooth has device discovery and pairing technology and also built in security which allows a one to one mapping between transmitter and reciever. So no other device can be used for remote control. The most important advantage is that we can program an ordinary mobile phone with bluetooth facility to act as the transmitter without any hardware addition.
The transmitter will be ordinary mobile phones and the receiver will contain a Bluetooth module, and embedded controller and an IR re transmitter. The receiver module receives instructions from the mobile phone, and converts the instruction to equivalent IR signals. So the device can be made compatible with any TV model we choose.
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