Patent ID: 8294832
Filing Date: 2012-10-23
Classification: G01R,G08C

Abstract:
1. A remote control for an electronic device, the remote control comprising: a plurality of keys operable to generate different first electrical signals when actuated; a power supply operable to power the remote control; a power control unit configured for detecting a voltage of the power supply, and generating a second electrical signal when the voltage of the power supply drops below a predetermined value; a code modulating unit configured for generating different key code signals according to the different first electrical signals, and further configured for generating a switch code signal according to the second electrical signal; and a transmitter unit configured for converting the different key code signals and the switch code signal into different wireless signals, and transmitting the different wireless signals to the electronic device; wherein the power control unit comprises: a detection circuit configured for detecting the voltage of the power supply, generating a first detection signal when the voltage of the power supply falls below the predetermined value; and a switch circuit connected between the power supply and the code modulating unit and configured for establishing an electrical connection between the power supply and the code modulating unit according to the first detection signal, and generating the second electrical signal accordingly.