Some device remote controls may not be recognized when using the Remote Control application Learn option for any of the following reasons:
- The device remote control does not use Infrared (IR) to communicate: Some Remote controls use Radio Frequency instead of Infrared (IR). Radio frequency (RF) remote controls transmit radio waves that correspond to the binary command for the button being pushed, and a radio receiver on the device receives and decodes the signal. The Remote Control application on the tablet only recognizes remote controls that transmit instructions via Infrared (IR).
- The device remote control does not support two way communication: Two way communication means that the remote control and the device communicate with each other in both directions. When a button is pressed on the remote, it sends a signal one way to the device, telling it to perform the command, and the device then send a signal back to the remote acknowledging the command. The Remote Control application on the tablet only recognizes remote controls that support two way communication.
- Remote control with long number of bytes for IR pattern: Infrared (IR) remote controls operate by modulating (turning on and off, or blinking) an infrared (IR) light source which, in turn, gets received and decoded by the device. This blinking pattern gets interpreted as a string of bits. where 8 bits equal a byte. The tablet supports conventional byte IR patterns (12 or 20 character byte patterns) and transmissions, but devices that send IR patterns in a long or unconventional number byte format may not be recognized by the tablet, and so cannot be used with the Learn feature of the Remote Control application.