Other

Goonies Co., Ltd.

Korea Institute of Science and Technology

Lsis Co., Ltd.

Ulsan National Institute of Science and Technology

Yun Jae Lee

Seung Sang Hwang

Soon Man Hong

Kyung Youl Baek

Chong Min Koo

Hyun Ji Kim

Min Jae Ko

Hyeon Yeol Jeon

Nam Hun Kim

Eun Sik Choi

Kyoung In Beak

Hyun Seo Nam

Dong Hwan Song

Game controller

The present invention relates to a method for providing a route guidance service for visually impaired people, the method comprising the steps of: when a predetermined application is selected through a user input, transmitting a request for a route guidance service together with location information acquired through the GPS of a user terminal simultaneously with execution of the selected application; servicing, by a route guidance server, search path information corresponding to an input destination on the basis of the location information received from the user terminal according to the route guidance service request from the user terminal; broadcasting, by the user terminal, an inquiry signal through a Bluetooth device search request, identifying an earphone by a device which transmits a response signal to the broadcasted inquiry signal, and performing paging with the identified earphone; and recognizing a user's walking direction on the basis of the search path information through outputting a signal by gyro sensors attached to both sides of the earphone according to a user's movement, converting the recognized result into a guidance sound according to a route guidance service rule, and outputting the guidance sound to the earphone.

System and method for providing route guidance service for visually impaired people

The present invention provides a method for producing polythiophene star copolymer capable of being self-doped by an external stimulus, which includes the steps of: forming a polythiophene macroinitiator made by introducing a living radical polymerizable functional group into an end of polythiophene or a derivative thereof; forming through living radical polymerization a polymer macroinitiator for providing by an external stimulus at least a dopant selected from the group consisting of sulfonic acid radical, carboxylic acid radical and phosphoric acid radical; and polymerizing the polythiophene macroinitiator added with the polymer macroinitiator and at least one kind of divinyl monomer to produce the polythiophene star copolymer. The polythiophene star copolymer capable of being self-doped by an external stimulus according to the present invention is a self-doped material to stably increase conductivity, and can be used as a material for a conductive film.

Polythiophene star copolymer capable of being self-doped by external stimulus, a method for producing the same, a conductive thin film using the same, and a method for producing the conductive thin film

Palm rest for touch screen

A method of charging and discharging battery energy storage device is provided. The method includes measuring a voltage and a frequency of a grid, measuring a state of charge (SOC) value of a battery, calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery, and performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery.

Method of controlling charging and discharging of battery energy storage device and the battery energy storage device for the same

Data input device for computer

Growing community of inventors

Seoul, South Korea

Yun Jae Lee