Infopia Co., Ltd.

Harex Infotech Inc.

Osang Healthcare Co., Ltd.

Won Dong Kim

Dae Yeon Kim

Jong Jin Lee

Kyung Yang Park

Sung Dong Lee

Seok Ki Lee

Hoon Joon Jung

Heon-Kwon Lee

Kwang Su Chang

Eun Sang Cho

Do Ha Kim

Byung Woo Bae

Que Min Hwang

Hee Gu Woo

Bog Heui Kang

Chul Ki Kim

Kwang Hyun Sung

Jin-A Yoo

Jung Shik Song

Bong Sung Jung

Joo Pyo Hong

Disclosed are an apparatus and a method for determining whether or not a biosensor comprising two working electrodes and one reference electrode is well manufactured, and for rapidly and accurately quantifying a specific substance contained in a biological sample. The method comprises the steps of: sequentially supplying the respective working electrodes with power supply voltage; sequentially detecting the amounts of current flowing in the respective working electrodes by virtue of the supplied power supply voltage; re-supplying the two working electrodes with power supply voltage after a predetermined time to redetect the amounts of current flowing in the respective working electrodes; reading concentrations corresponding to the amounts of current detected from a memory, and calculating an average value from the read concentrations; and checking whether or not the concentrations read from memory are within a predetermined critical range to display an error message or the calculated average value.

Apparatus and method for measuring reaction result of samples on biosensor

An optical payment transceiver and an optical settlement system using the same uses a personal portable terminal incorporated with an optical transceiver as a card substitute payment unit for settlement. Here, card information is incorporated in a personal portable terminal incorporated with an optical transceiver such as a portable phone or a PDA and the optical transceiver is connected to a card inquiry machine to thereby optically transmit and receive card information. The card inquiry machine recognizes the received card information in the same manner as that of the card reader reading a magnetic card, and transmits the card information to a VAN company server or a card company server, to then request for an approval and settle transactions. The present invention is applied to most fields where financial transactions are performed as in a general commerce, a toll gate fee or tunnel passage fee collection system, a subway or bus fare levying system, a gas station, a department store, a drive-thru ordering system, a vending machine, and a fee payment system of kiosks. Also, the present invention can be applied to an entrance/exit security system requiring personal identification. Thus, the present invention can use a portable terminal as a payment unit without carrying a cash or cards, to thereby provide an effect of performing a safer and more reliable credit transaction.

Optical payment transceiver and system using the same

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Seoul, South Korea

Won Dong Kim