Novak Druce Connolly Bove + Quigg LLP
Keyboard circuit and method for keyboard circuit
A keyboard and a keyboard circuit, wherein the keyboard acts as an input device for a portable device or a computer. The keyboard circuit comprises an interface for connecting with the computer or the portable device, a detection circuit for detecting the logic level signal of the power supply from the computer or the portable device connected to the keyboard, and a microprocessor determining whether a computer or a portable device is connected to the keyboard in accordance with the logic level signal of the power input. The keyboard circuit uses a first communication circuit to communicate with the computer and a second communication circuit to communicate with the portable device, thus the keyboard is compatible with the computer or the portable device. The keyboard is capable of entering a sleep mode after finishing the transmission of the key codes to the computer or the portable device.
HON HAI PRECISION INDUSTRY CO., LTD. HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
G Y G
G06F Y02D G06F
inventional additional inventional
Xiao-Guang Ruey-Shyang Han-Che Xin Fan-Lin
Li You Wang Zhao Lu