Samsung Electronics Co., Ltd.

Yong-seok Shin

Jang-Won Lee

Jee-Kyoung Park

Hyung-han Lee

In a security card check type computer security method, it is determined whether a predetermined check condition for checking a right of a security card to use a computer, which stores at least security information enabling the identification of the right of use of computer, is satisfied and a combination key requiring checking is generated. When the combination key is received, check result data with respect to the security card is waited for. The security information of the security card is checked to obtain the check result data. The right of use of computer is controlled depending on the check result data.

Security card check type computer security system method

A control system for an automatic shutdown of a power supply constructed with a switching mode power supply (SMPS) receiving an AC voltage and converting the AC voltage into a DC voltage; a main board receiving the DC voltage output from the switching mode power supply; and a control circuit controlling and maintaining the supply of power from the switching mode power supply to the main board until a shutdown process is performed when power is turned OFF, wherein the control system enables the automatic shutdown of a power supply while preventing a file or a system from being damaged by automatically cutting off power after performing the shutdown process by the power control system even though the power switch is turned OFF due to the carelessness of the user or an external factor.

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Seoul, South Korea

Yong-seok Shin