Patent ID: 7742043

Claim:
A level-shift circuit for processing a first input signal, a second input signal and an output signal, the first input signal and the second input signal being transmitted directly/indirectly from a system status signal source of a mother board to a display controller of a system status display module, the output signal being transmitted from the display controller to the system status signal source, the level-shift circuit comprising: an input circuit having a first FET (Field Effect Transistor) and a second FET in circuit connection with an input adjusting voltage respectively, thereby transforming a first voltage range of the first input signal and a second voltage range of the second input signal into the operating voltage range of the display controller; and an output circuit having a third FET and a fourth FET in circuit connection with a first output adjusting voltage and a second output adjusting voltage respectively, thereby transforming the output signal with the operating voltage range into a first output signal with the first voltage range or into a second output signal with the second voltage range.