Illuminated keyboard including a feedback wire for differentiating key presses, and control method thereof

A control method for an illuminated keyboard including a feedback wire for differentiating key presses, which is applied to the illuminated keyboard, wherein the illuminated keyboard comprises a light-emitting diode light string, a controller, a feedback line and a plurality of keys;

• the light-emitting diode light string comprises a plurality of light-emitting diode modules which are connected in series with each other through a serial connection wire, the controller is electrically connected with the light-emitting diode light string through the serial connection wire, the feedback line is electrically connected between the plurality of light-emitting diode modules and the controller, and the plurality of keys correspond to the light-emitting diode modules and are electrically connected to the feedback line, wherein each of the plurality of keys has a pressing state and a non-pressing state;
• the control method comprises the following steps:
• step 1, transferring a light-emitting signal and a discriminating signal to the light-emitting diode light string through the serial connection wire by the controller, wherein the light-emitting signal is not be equivalent to the discriminating signal;
• step 2, emitting light by each of the plurality of light-emitting diode modules of the light-emitting diode light string according to the light-emitting signal after receiving the light-emitting signal;
• step 3, outputting a feedback signal by each of the plurality of light-emitting diode modules of the light-emitting diode light string after receiving the discriminating signal and transfers the feedback signal to the controller through the feedback line;
• and
• step 4, when at least one of the plurality of keys is switched to the pressing state from the non-pressing state, pulling the feedback signal from a first level to a second level for the controller to differentiate the key in the pressing state.