Seoul National University

Sk Telecom Company, Ltd.

Gdt Co., Ltd.

Ki Won Cho

Min Seok Kim

Nam Soo Kim

Keun Hwan Choi

Moon Kee Kim

Hwan Sik Yun

Myung Soon Park

An apparatus for manufacturing water having a high concentration of dissolved ozone is characterized by being configured by connecting: a filtering device; a water tank connected to the filtering device; a pump connected to the water tank; a Venturi tube connected to the pump; a first gas dissolving pressure device connected to the Venturi tube; and a second gas dissolving pressure device connected to the first gas dissolving pressure device.

Apparatus for manufacturing water having high concentration of dissolved ozone

Disclosed are a system and a method for transceiving data in an audio frequency band. The system includes a data input unit to input data for acoustic communication into an audio signal, a transmitting unit to transmit the audio signal including the data in the audio frequency band, and a receiving unit that receives the audio signal including the data and performs synchronization of the audio signal through a matched filtering using a matched filter in order to extract the data according to predetermined extraction processing. The data to be transmitted are added to an audio signal and the audio signal is transmitted in the audio frequency band, so that the data for the acoustic communication are effectively transmitted to the recipient in the audio frequency band.

System and method for data reception and transmission in audible frequency band

Growing community of inventors

Gyeonggi-do, South Korea

Ki Won Cho