Lsis Co., Ltd.

Other

Samsung Electronics Co., Ltd.

National Rehabilitation Center

Korea Greencross Corporation

Korean Association of Creation Research

Young Bok Han & Korean Assoc. of Creation Research

Tae Rim Pharm. Co., Ltd.

Jong Bae Kim

Seung Hun Lee

Eung Soo Kim

Eun Kyung Hong

Young Bok Han

In Ho Lee

Choon Woo Kim

Kyung Tae Kim

Hong K Kyung

Hyun Gil Shin

Hong Ki Kyung

Kwang Ok An

Won Jin Song

Won Kyung Song

Dong Hyun Kim

Jeong Hun Kim

Jeong Han Kim

Gyeong-Tae Lee

Sung-Ha Son

Sang Geon Kim

Jong Kug Seon

Sang Chul Ko

Kyung Rae Kim

In Gyu Han

Kyung Rim Kim

Sung Joo Kim

Hae Ryoung Kim

Kyung Yung Lee

Bo Im Yoo

Jae Seok Choung

Dong Hyun Jung

Gyoung Hun Nam

E Tay Ahn

Hyo Suk Lee

Chun Won Kim

Yung Bok Han

Hee Sook Choi

Hae Kyung Kwon

Choon Won Kim

Jeong Jo Mun

Hae Ri Kim

Jeong J Mun

Jung J Moon

Hyun Joo Chung

Young Sang Lee

Sung Hee Kang

Disclosed herein is a slit-firing speaker apparatus capable of full frequency band reproduction. The speaker apparatus includes a speaker unit configured to generate sound, an enclosure, in which the speaker unit is installed, configured to block rearward sound to prevent the rearward sound of the speaker unit from being mixed with forward sound of the speaker unit, and a reflection plate configured to cover the speaker unit and coupled to the enclosure to form an acoustic path through which the generated sound travels. The acoustic path includes a radiation part formed at one end of the acoustic path and radiating the generated sound, and an opening part formed at the other end of the acoustic path.

Speaker apparatus

A directional speaker and a display apparatus having the same are provided. In particular, the display apparatus includes a pair of directional speakers as a surround sound speaker, wherein each directional speaker includes a driver to generate sound and a guide tube provided with sound radiated holes linearly aligned on one surface thereof.

Directional speaker and display apparatus having the same

A redundant control device of a high voltage direct current (HVDC) transmission system is provided. The redundant control device includes a first system and a second system that performs a function corresponding to that of the first system; and a first change over logic (COL) and a second COL that determine whether to switch between the first system and the system, wherein there are optical communication modules between the first system and the first COL, between the first COL and the second COL, and between the second system and the second COL to transmit and receive data, and the first COL and the second COL includes a monitoring control unit that checks a connection or wiring state of the optical communication modules and validity of transmission data.

Redundant control device and method of HVDC system

Disclosed embodiments relate to a data control system. In some embodiments, the data control system includes a transmission module configured to add synchronization signal information to data included in a first data stream to generate a second data stream, and a plurality of control modules configured to receive the second data stream from the transmission module. In some embodiments, the data includes power information.

Data control system

A data processing device for a high voltage direct current (HVDC) transmission system is provided. The data processing device includes a plurality of measuring interface systems (MIS) for measuring a voltage or current in an HVDC transmission system; a bus for transmitting data on the plurality of MISs; and an optical distribution module (ODM) transmitting the data transmitted through the bus to the HVDC transmission system, wherein the plurality of MISs increases counter values according to a data transmission completion signal of the ODM, and an MIS corresponding to the counter value among the plurality of MISs transmits data to the ODM through the bus.

Data processing device and method for high voltage direct current transmission system

A device for controlling a high voltage direct current (HVDC) transmission system is provided. The device includes: a communication unit communicating with a control device; a control unit obtaining a databack signal received through the communication unit, checking a data line error and a line connection error based on an obtained databack signal, and outputting a valve control signal based on the databack signal; and an output unit outputting the valve control signal to a valve control device based on control of the control unit.

Device and method for controlling high voltage direct current transmission system

A changeover method of a high voltage direct current (HVDC) transmission system is provided. A first system is set to an active state. A ready signal is transmitted from the first system to a first COL. A ready detection signal and an active signal are transmitted to the first system, in response to the ready signal. A confirm signal is transmitted to the first system in response to the active signal when the ready detection signal matches the ready signal.

Changeover method of HVDC transmission system

Disclosed is a photovoltaic system including a power optimizer, capable of minimizing noise occurring due to shading, an error in an output power of a photovoltaic module, etc. while a maximum power point tracking (MPPT) algorithm is performed. The photovoltaic system includes a photovoltaic module; a power optimizer; and an inverter, wherein the power optimizer includes: an input unit configured to receive an output power of the photovoltaic module; a sensing unit configured to sense an output voltage and an output current of the photovoltaic module; and a controller configured to control an output of the power optimizer, by comparing the presently-sensed current with a previously-sensed current.

Photovoltaic system

The present invention relates to a feeding assistant robot, which assists in feeding patients or the elderly and infirm who have difficulty in moving their arms and thus have difficulty in feeding themselves. The feeding assistant robot includes: a picking arm including a gripper for picking up food placed on a tray; a feeding arm, including a spoon on which the food picked up by the picking arm is placed, for moving the spoon to the mouth of a user; an input device enabling the user to direct the movements of the picking arm and of the feeding arm; and a control unit electrically connected to the picking arm, the feeding arm, and the manipulation part to control the movements of the picking arm and the feeding arm according to the commands from the input device.

Feeding assistant robot

A gate driving apparatus according to the embodiment includes a first switching device, a second switching device that outputs a signal to charge a capacitance of the first switching device, a third switching device connected in parallel to the second switching device to prevent a drop of a voltage output from the second switching device, and a fourth switching device that outputs a signal to discharge the capacitance of the first switching device. An NMOS transistor is used as a main switching device and a PMOS transistor connected in parallel to the NMOS transistor is used as a sub-switching device, so that the chip size is reduced without dropping the output voltage of the gate driving apparatus. The loss of the switching device is prevented by preventing the output voltage of the gate driving apparatus from being dropped.

Gate driving apparatus

The present invention provides a extracted substance from a mixture of a non-fat starch from Ricini semen and a root of coptis Sp. This substance is suitable for use in the therapeutic applications of AIDS.

Extracted substance having anti-HIV activity

The present invention relates to an anti-cancer composition containing acridine derivatives and guanosine compounds. In the composition of the present invention, the acridine derivative and the guanosine compound are present in the weight ratio of 1:0.1-5.0, preferably 1:0.3-3.0 and more preferably 1:0.5-1.5. In the composition of the present invention, most preferably the acridine derivative is acriflavine neutral and the guanosine compound is guanosine hydrate. Although acridine derivatives and guanosine compounds used as an active ingredient in the present composition have substantially no anti-cancer effect when they are used individually, the combination of acriflavine neutral and guanosine hydrate which potentiates the effect of acriflavine neutral, i.e. the composition(AG60) according to the present invention, exhibits reduced toxicity and increased anti-cancer effect in comparison to the use of acriflavine neutral or guanosine hydrate alone.

Anti-cancer compositions

The present invention provides a extracted substance from a mixture of a non-fat starch from Ricini Semen and a root of Coptis sp. This substance is suitable for use in the therapeutic applications of AIDS.

An extract is derived from a mixture of the bark of the genus Phellodendron and the defatted seed of the genus Croton and has excellent therapeutic activity in treating various disorders of the immune system. The extract is obtained by extracting the mixture with an organic solvent, filtering the resulting mixture to separate a residue, extracting the residue with hot water to obtain a water soluble solution, concentrating the solution under reduced pressure and saturating vapor pressure, and removing the resulting precipitates from the solution. If necessary, the obtained solution is again extracted with an organic solvent, the resulting organic solvent and water soluble layers separated, and the water soluble layer purified and lyophilized to obtain a yellowish brown powder which can be used as the effective ingredient in a pharmaceutical composition for treating a wide range of immune system disorders.

Medicinal extract from a mixture of Phellodendron and defatted seed of

Growing community of inventors

Seoul, South Korea

Jong Bae Kim