Control circuit and method to wake up or turn on computer via peripheral device
AssigneeWinbond Electronics Corp.
InventorCheng-Chih Wang
Life of this patent
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Abstract
A controller circuit and a method to wake up or turn on a computer system by a peripheral device comprising a MIDI port. When the computer system is in a standby or an off state, a certain value or combination of the peripheral device is preset as a default value. Inputting a certain signal to the peripheral device, the wake up/turn on function can be achieved.
Claims14
A control circuit comprising a MIDI port of a peripheral device to turn on or wake up a computer system, wherein the control circuit is coupled between the peripheral device and a main bus, the control circuit comprising:
- a MIDI receiver, coupled to the peripheral device to receive a MIDI_IN signal of the peripheral device;
- a register, to store a data information with a default value;
- a comparator, to compare the MIDI_IN signal with the date information sent from the register and to output an enable signal when the default value is equal to a value of the MIDI_IN signal;
- and
- a power supply controller, coupled to the comparator and to wake up or turn on the computer system according to the enable signal sent from the comparator.
A method to turn on or wake up a computer system via a peripheral device comprising a MIDI port, wherein the computer system comprises at least a chipset, an ATX power supply, and a control circuit, the method comprising:
- presetting a default value to the control circuit before the computer system enters an off or a standby state;
- inputting a certain signal from the peripheral device to the control circuit after the computer enters the off or the standby state;
- comparing a value of the certain signal to the default value;
- and
- turning on or waking up the computer system via the ATX power supply and the chipset, so as to enable the computer system to operate normally.
A method to turn on or wake up a computer system via a peripheral device comprising a MIDI port, wherein the computer system comprises at least a chipset, an ATX power supply, and a control circuit which further comprises a MIDI receiver, a comparator, a register, and a power supply controller, the method comprising:
- presetting a default value to the register before the computer system enters an off or a standby state;
- inputting a MIDI_IN signal from the peripheral device to the MIDI receiver after the computer enters the off or the standby state;
- comparing a value of the MIDI_IN signal to the default value from the register by the comparator;
- inputting an enable signal to the power supply controller from the comparator when the value of the MIDI_IN signal is equal to the default value;
- and
- turning on or waking up the computer system via the ATX power supply and the chipset controlled by the power supply controller according to the enable signal.
Dependencies are inferred from the claim text.