US 7,742,043 B2 · System status display module and level-shift circuit thereof

Abstract

A system status display module with a level-shift circuit thereof is provided for processing signals of system status data. The level-shift circuit includes an input circuit and an output circuit for processing plural input signals that have different voltage ranges. The input circuit includes two field effect transistors (FETs) in circuit connection with an input adjusting voltage, thereby transferring the voltage ranges of the input signals into the operation voltage range of a display controller on the module. The output circuit includes another two FETs in circuit connection with two different output adjusting voltages, thereby transferring the voltage range of an output signal transmitted from the display controller into required voltage ranges for the mother board.

Claims20

Dependent claims

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.

A system status display module for processing a first input signal and a second input signal transmitted directly/indirectly from a system status signal source of a mother board for displaying a plurality of system status data of the mother board, the system status display module comprising:

a display controller;
a level-shift circuit, comprising:
an input circuit having a first FET and a second FET in circuit connection with an input adjusting voltage respectively, thereby transforming a first voltage range of the first input signal or a second voltage range of the second input signal into an 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, thereby transforming an output signal of the display controller into the first output signal with the first voltage range or the second output signal with the second voltage range;
a power connector for transmitting the input adjusting voltage, the first output adjusting voltage and the second output adjusting voltage from the mother board;
a signal connector in circuit connection with the mother board, transmitting the first input signal, the second input signal, the first output signal and the second output signal;
and
a display panel for displaying the system status data.

6 more elements

Dependencies are inferred from the claim text.

System status display module and level-shift circuit thereof

Life of this patent

System status display module and level-shift circuit thereof

Life of this patent

Abstract

Claims20