Lg Innotek Co., Ltd.

Sk Telecom Company, Ltd.

Ji Won Bang

Young Kwan Kim

Jung Kook Ki

Shin Bae Kim

Yun Sup Song

Gun Dong Min

Yang Hak Kim

A device for measuring a current of a three-phase inverter according to an embodiment of the present invention comprises: a current detection element connected to the lower end of one of three lower switches comprising an inverter; a current measurement unit for measuring a current by using the current detection element and the other two lower switches, to which the current detection element is not connected; and a current correction unit for correcting a second current value and a third current value measured using the two lower switches, on the basis of the relationship between a first current value measured using the current detection element and the second and third current values.

Device for measuring current of three-phase inverter and method therefor

A system for providing character-based information for a moving object include a GPS receiver receiving position information of the moving object, a character radio pager for receiving control information and character information, a living information database for storing the character-based information received from the character radio pager, a moving picture database for storing the control signals and operator information, a position information database for storing the position information from the movement of the moving object and providing announcement for the present moving position of the moving object, a CPU for extracting useful information from the GPS receiver and the character radio pager or extracting an announcement stored in the position information database under the control of a scheduler, a sound card and a video card for outputting the information of the database, and an advertisement control server for transmitting control signals to the character radio pager.

System and method for providing useful information for a moving object

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Seoul, South Korea

Ji Won Bang