Video signal box remote controller with bidirectional opposite-transmission function and remote control method thereof

This invention refers to a remote controller and method for STB having mutual transmission function, which contains a STB, a hand held remote controller, wherein they are all contain a transmitter and a receiver, inputting the control signal to said hand held remote controller whose transmitter transmitting the signal to the receiver in STB, the STB completing internal operation then transmitting affirmation signal to hand held remote controller which receiving the affirmation signal then displaying the received affirmation signal. Said invention increases the use convenience and range.