Reset circuit and method of portable terminal
AssigneeSamsung Electronics Co., Ltd.
InventorWoo Cheol LEE
Life of this patent
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Abstract
A reset circuit and a reset method of a portable terminal are provided. The reset circuit of a portable terminal includes an input unit for generating a certain input signal for reset according to a user input, a reset unit for generating a manual reset input signal according to an input of the certain input signal, for performing a control operation to cut-off power to be supplied to a Power Management IC (PMIC) using a signal generated during an operation maintenance time interval of the portable terminal and the manual reset input signal, and for performing a control operation to resupply the power to the PMIC according to an input signal from the input unit or completion of a preset timer, and a power supply unit for supplying the power.
Claims20
A circuit of a portable terminal, the circuit comprising:
- an input unit for generating a certain input signal for reset according to a user input;
- a reset unit for generating a manual reset input signal according to an input of the certain input signal, for performing a control operation to cut-off power to be supplied to a Power Management IC (PMIC) using a signal generated during an operation maintenance time interval of the portable terminal and the manual reset input signal, and for performing a control operation to resupply the power to the PMIC according to at least one of an input signal from the input unit and completion of a preset timer;
- and
- a power supply unit for supplying the power.
A reset method of a portable terminal, the method comprising:
- generating and supplying a manual reset input signal to a reset control circuit by a reset circuit according to whether a certain input signal for reset is generated;
- performing a control operation to change a supply state of power supplied to a Power Management IC (PMIC) to a cutting-off state by a reset control circuit to which a manual reset input signal is supplied when a signal having a high state generated during an operation maintenance time interval of the portable terminal and the manual reset input signal are generated;
- and
- resupplying the power to the PMIC according to at least one of an input signal for resupplying the power to the PMIC and a timer completion signal according to completion of a preset timer.
A portable terminal, the terminal comprising:
- an input unit for generating input signals based on a user input;
- a power supply for supplying power;
- a controller for controlling operations of the portable terminal;
- and
- a reset unit for operatively cutting-off power supplied to the controller if an input signal corresponds to a predefined signal associated with a manual reset operation.
Dependencies are inferred from the claim text.