baber/WOPTO huggingface dataset:
Patent KR-19990044092-A (KR)
Title: Colourant composition for paint products
Inventor: ADOLFSSON MAJ-LEN CARITA
IPC: C09D17/00
Filed: 1996-08-21
Abstract: PCT No. PCT/FI96/00450 Sec. 371 Date Jun. 17, 1998 Sec. 102(e) Date Jun. 17, 1998 PCT Filed Aug. 21, 1996 PCT Pub. No. WO97/08255 PCT Pub. Date Mar. 6, 1997The invention relates to colorants (colorant pastes) used for the tinting of paint products. The colorants contain: 2-75 wt-% (A) pigment component comprising of one or more organic and/or inorganic pigments and possibly extender pigments, 10-60 wt-% (B) diluent component comprising of one or more organic solvents other than aliphatic alcohols or aromatic hydrocarbons, wherein 20-100% of the total weight of the diluent consists of a biodegradable ester of lactic acid and an alcohol, preferably ethyl or isopropyl lactate, 10-50 wt-% (C) binder component (calculated as 100% non-volatile matter) comprising one or more binders soluble in the diluent (B), wherein 70-100% of the total weight of the binder consists of a ketone aldehyde, ketone and/or aldehyde resin soluble in aliphatic hydrocarbons and 0-30% of the total weight of the binder consists of other binders commonly used in colorants, for example acrylic, alkyd or polyester resin, and 0-5 wt-% (D) additive component (calculated as 100% active matter) comprising one or more additives suitable for use in colorants. The binders and additives may be delivered undiluted (solvent-free) or they may contain as a diluent organic solvents that in the colorant are considered as a part of the diluent component (B). The present invention relates not only to the above mentioned colorants but also to their use as a part of a tinting system of solvent-borne paint products.
Patent KR-20000064265-A (KR)
Title: 카티온 전착도장 방법 및 카티온 전착도료 조성물
IPC: C09D5/44
Filed: 1997-07-23
Abstract: 카티온 전착도장 방법 및 우수한 균일전착성을 갖는 카티온 전착도료 조성물. 
     상기 방법은 카티온 전착도료 조성물에 피도물을 침지하는 공정 (1), 상기 피도물을 음극으로 하여, 양극과의 사이에 전압을 적용하여, 피막을 석출시키는 공정 (2), 및, 석출시킨 상기 피막에, 전압을 더욱 적용함으로써, 상기 피막의 단위부피당 전기저항치를 증가시키는 공정 (3) 으로 이루어진다.       상기 공정 (3) 은, 상기 피도물의 피막미석출부위에 피막을 석출시키는 것이며, 상기 카티온 전착도료 조성물은, 정전류 조건하에서의 전착의 과정에서, 석출피막의 단위부피당 전기저항치가 증가하는 시점을 갖는 것인 카티온 전착도장 방법이다.
Patent KR-19990071994-A (KR)
Title: 정보신호기록매체를이용하는기록장치
IPC: G11B17/22
Filed: 1997-10-08
Abstract: 튜너부와, 튜너부에 의한 방송 수신의 개시 및 종료 시각에 관한 타이머 정보가 기억되는 기억부와, 타이머부, 복수의 기록 매체를 수납하는 수납부에서 추출된 기록 매체에 기록을 행하는 기록부, 타이머부로부터 공급되는 출력 신호와 기억부에 기억되어 있는 타이머 정보에 기초하여 튜너부와 기록부의 동작을 제어하는 컨트롤러를 구비한다.  컨트롤러는, 타이머부로부터의 출력 신호와 기억부에 기억되어 있는 타이머 정보의 방송 수신의 개시 시각을 비교하고, 비교한 결과에 기초하여 수납부에서 하나의 기록 매체를 추출하고, 튜너부로부터의 출력 신호를 추출된 기록 매체에 기록부에 의해 기록을 개시하며, 타이머로부터의 출력 신호와 기억부의 방송 수신의 종료 시각을 비교한 결과에 기초하여 기록부에 의한 튜너부로부터의 출력 신호의 기록 동작을 정지시킨다.
Patent KR-20000010633-A (KR)
Title: Method for preparing a solid cosmetic gypsum plaster based composition andresulting cosmetic composition
Inventor: BODELIN-LECOMTE SOPHIE
IPC: A61K8/36
Filed: 1998-03-09
Abstract: PURPOSE: A solid gypsum plaster based composition is provided to prevent a side effect caused by an excessive density of an antiseptic and to obtain a uniform dispersion of the antiseptic in the final composition. CONSTITUTION: The invention concerns a method for preparing a solid gypsum plaster based composition, in particular cosmetic, consisting in the following steps: preparing a powdery mixture containing at least a semi-hydrated calcium sulphate in powder form; adding an aqueous phase to the powdery mixture; kneading the powdery mixture and the aqueous phase to obtain a castable mixture; pouring the castable mixture into a mold; allowing the mixture to harden by hydrating the semi-hydrated calcium sulphate into di-hydrated calcium sulphate. The method is characterized in that it consists in adding in the powdery mixture, before adding the aqueous phase, a non-aqueous liquid preserving system. The invention also concerns a composition, in particular cosmetic, obtainable by this method.
Patent KR-20000015990-A (KR)
Title: Recording medium and reproducing for the same
Inventor: HORI YOSHIHIRO
IPC: G11B7/007
Filed: 1997-10-30
Abstract: PURPOSE: A recording medium and a reproducing device for the same are provided to obtain address information by irradiating one laser beam to a land or a groove. CONSTITUTION: An address region(1) includes a first address information region(11) and a second information region(22). A laser beam is provided to a groove and a land of which side walls are wobbled. In case that wave shapes of wobbled signals in both side walls are different, a wave shape of the wobbled signal is not reproduced. Therefore, the first address information region(11) of the groove(31) has both side walls in which in-phase wobbles are formed and the second address information region(22) has both side walls of non in-phase wobbles(50,52). Thereby, in case that the laser beam is provided to the groove(31), a reproducing signal is obtained by the wobble(51) formed in the first address information region(11). And, the signal is not obtained by the wobbles(50,52) formed in the second address information region(22). And, address information of data recorded or to be recorded in a groove is recorded as a wobble(52) in the first address information region(11).
Patent KR-20000016221-A (KR)
Title: Creatine pyruvates and method for their production
Inventor: PISCHEL IVO
IPC: C07C279/14
Filed: 1997-12-18
Abstract: PURPOSE: A creatine pyruvate and a manufacturing thereof are provided to be used for increasing stamina and strength in the field of sport, for reducing weight and body fat in health care, and for treating an oxygen deficiency condition and overweight. CONSTITUTION: The invention relates to creatine pyruvates of the general formula (I) (creatine)x(pyruvate)y(H2O)n, in which x = 1-100, y = 1-10 and n =0-10. These creatine pyruvates can be produced by the relatively simple reaction of creatine with pyruvic acid. They can be used to increase stamina and strength in the field of sport, for weight and body fat reduction in health care, in the treatment of oxygen deficiency conditions (ischaemia), obesity and overweight, as a food supplement additive, and as a radical interceptor.
Patent KR-20000022368-A (KR)
Title: Autonomous container ship with hull incorporating a propulsion unit
Inventor: DE SMIRNOFF OLIVIER
IPC: B63B43/00
Filed: 1998-04-27
Abstract: PURPOSE: An autonomous container ship comprising a bottom, propulsion means, means for loading and unloading containers, balancing means is provided. CONSTITUTION: An autonomous container ship comprises a bottom, propulsion means, for loading and unloading containers, balancing means, characterized in that the bottom(1,6) has a hull incorporating a propulsion unit and the ship comprises means for transporting containers from important ports equipped with facilities for loading and unloading containers to small ports not provided with such equipment and less than 4 metres deep. The propulsion means(5) comprises electric motor, line of trees and propellers to the back, ensuring the ship's cruising speed on the high seas and its speed in estuaries and ports. The loading and unloading means(2,3) adapted to ports not provided with appropriate equipment consists of a gantry(2) and one slope(3). The means for balancing the ship at sea providing stability and trim during container handling operations is composed of a system of ballasting.
Patent KR-20000051642-A (KR)
Inventor: SHIN HYEON EOK
IPC: G02F1/1333
Filed: 1999-01-25
Abstract: PURPOSE: A reflection plate assembly for a liquid crystal display device and a manufacturing method thereof are provided to increase the reflection efficiency of the reflection plate assembly. CONSTITUTION: A reflection plate assembly for a liquid crystal display device includes a lower substrate(4), a composite(62) of aluminium powder, liquid resin, benzocyclobutene, and a solid state composite(62'). The lower substrate(4) is scattered with a scattering apparatus(22). The composite(62) of aluminium powder, liquid resin, and benzocyclobutene is dispersed on the surface of the lower substrate by the usage of the scattering apparatus. The lower substrate is inserted to a furnace of 500-600°C atmosphere to be baked. The composite(62) of aluminium powder, liquid resin, and benzocyclobutene applied on the lower substrate is also baked to a solid state composite. The solid state composite is attached on the lower substrate to form a reflection layer(60) with protrusions and depressions.
Patent KR-20000056144-A (KR)
Inventor: LEE YUN GWAN
IPC: H01J9/24
Filed: 1999-02-13
Abstract: PURPOSE: An under layer for a plasma display panel is to prevent a diffusion of a lower substrate and an electrode and further prevent a degeneration of the under layer when fabricating the plasma display. CONSTITUTION: A plasma display panel comprises a lower substrate(38) formed with an address electrode, an under layer formed between the lower substrate and the address electrode to prevent a diffusion of the electrode, a dielectric layer coated on the under layer at a desired thickness to form a wall charge, a partition formed on an upper portion of the dielectric layer to divide each discharge cell, a fluorescent material layer formed on an upper portion, a transparent electrode formed on an upper portion of an upper substrate, a dielectric layer coated on the upper substrate and the transparent electrode to form a wall charge, and a protecting layer for protecting the dielectric layer. The under layer is formed of a Ti compound. A method of forming the under layer comprises steps of disposing the lower substrate on a substrate holder(36), etching a face of the lower substrate, disposing a Ti target(34) in a vacuum chamber, injecting an Ar gas in the vacuum chamber and then performing a sputtering process to remove a pollutant on the face of the substrate, injecting a mixture gas of CH4 and N2 and then forming the under layer using a RF plasma discharge.
Patent KR-20000056761-A (KR)
Inventor: YEO WUN CHANG
IPC: C02F1/74
Filed: 1999-02-25
Abstract: PURPOSE: A wastewater treatment system is provided which effectively treats suspended solids by controlling the volume of fine bubbles as concentration of the suspended solids. CONSTITUTION: In the wastewater treatment system which contains an undiluted solution tank(11) which stores additive water to surfactants, an air supplier(12) wherein air is injected and a bubble generator which receives additive water to surfactants and air from the solution zone and the air supplier, the treatment method is followed by the steps of: (i) mixing water and surfactants to prepare additive water to surfactants; (ii) supplying additive water to surfactants for the bubble generator; (iii) stirring additive water and air to generate fine bubble; (iv) separating fine bubble and circulation water to return circulation water and exhaust fine bubble; and (iv) flowing the exhausted fine bubble in a flotation tank and separating the suspended solids in wastewater to treat wastewater.
Patent KR-19990046510-A (KR)
Title: 뼈(골)진동마이크결합형이어폰
Filed: 1999-03-23
Abstract: 본 발명의 목적은 휴대전화기, 일반전화기 및 무전기등을 손에 쥐는 일없이 통화할 수 있는 마이크 결합식 이어폰으로서 입에서 나온 소리를 공기를 매질(媒質)로 하여 집음하는 것이 아닌 음원(音源)인 목과 입에서 발생한 소리를 뼈(骨)와 피부를 매질로 하여 투과된 소리를 집음(執音)할 수 있도록 설계하여 외부의 잡음을 차단하고 특수 설계된 증폭기(增幅器)와 소리의 명료도를 높인 IC 또는 회로기판을 내장하여 최상의 음질로 통화함에 그 목적이 있다. 
     이를 실현하기 위하여 본 발명은 
     첫째, 마이크부에 하나의 배출공(排出孔)이 있는 실리콘 재질의 턱부를 형성시켜 이 턱부가 외부의 소음을 차단시킴과 동시에 음원에서 발생된 소리를 뼈(골)와 피부를 매질로 하여 집음하는 기능을 하게된다. 또한 이 하나의 배출공은 음의 명료도와 안정화에 필수적 기능을 하게된다. 
     둘째, 집음된 미세(微細) 신호를 최상의 음질로 전달하기 위해 증폭기능과 음의 명료도를 높인 특수 1C 또는 회로기판을 내장한다. 
     셋째, 이어폰부와 마이크부를 넉클 형태로 결합하여 마이크부가 사람의 피부에 가장 잘 밀착할 수 있도록 탄성(彈性)을 준다. 
     넷째, 편리한 송수신 제어를 위해 본 기기의 본체에 텍트(tact) 스위치를 설치하며 또한 송수신시 스위치를 누르므로 인해 마이크로폰부가 피부에 밀착되는 기능도 한다.
Patent KR-19990064618-A (KR)
Title: 고속 임베디드 메모리 및 회로
IPC: G11C11/407
Filed: 1999-04-17
Abstract: 기존의 싱크로너스 디램과의 호환성을 유지하면서 임베디드 메모리 구조에 사용되는 캐시를 포함한 메모리구조 및 회로로서 다수개의 비트라인의 데이타를 각각 프로그래머블한 전류형태로 저장하는 캐시를 제안하며 그 구성회로를 예시하였다. 다수개의 캐시블럭중에 컬럼어드레스에 의해 특정 캐시블럭을 선택할 수 있으며 로우어드레스로부터 서브메모리블럭을 지정하여 상기 특정 캐시블럭에 전류형태의 데이타를 자장하게된다. 싱크로너스 디램과의 호환모드인 경우에는 전류형태의 전송을 하기때문에 컬럼 억세스시간이 빠르며 제안된 임베디드 메모리 동작을 할 경우에는 싱크로너스 디램과 달리 로우미스가 날 경우에도 메모리 셀의 데이타를 읽기위한 워드라인을 활성화 할 필요가 없이 캐시에 저장된 데이타를 독출하는 캐시동작을 통해 억세스시간을 빠르게 할 수 있다.
Patent KR-19990046758-A (KR)
Title: 통신기기및전산이용기기문자입력방법
Filed: 1999-04-22
Abstract: 본 발명은 통신기기의 문자 입력을 보다 간편하게 할 수 있도록 하여 통신기기로 문자 통신을 용이하게 이용할 수 있도록 한 통신기기 및 전산이용기기 문자 입력방법에 관한 것으로, 
     본 발명은 통신기기의 키버튼에 초성+중성,초성+중성+종성으로 자판을 형성하는 단계와, 상기 단계에서 키버튼 입력시 자음+모음으로 인식하는 단계와, 상기 키버튼 입력시 자음+모음+자음으로 인식하는 단계와, 상기 키버튼 입력시 자음+모음+복자음으로 인식하는 단계와, 상기 키버튼 입력시 복자음+모음으로 인식하는 단계와, 상기 키버튼 입력시 복자음+모음+자음으로 인식하는 단계와, 상기 키버튼 입력시 복자음+복모음+자음으로 인식하는 단계와, 상기 자음+모음+복자음으로 인식하는 단계로 이루어짐을 특징으로 한다.
Patent KR-20000072984-A (KR)
Inventor: MUN BYEONG TAEK
IPC: H02J7/00
Filed: 1999-05-04
Abstract: PURPOSE: A device is provided to prevent performance drop of a cell owing to a performance-dropped cell, to improve cell performance ununiformity by minimizing a cell capacity difference, and to secure cell safety by preventing excessive charging and discharging. CONSTITUTION: A device for efficiently using a collective battery comprises a cell section(100) which consists of a plurality of cells and applies 12-V. A field effect transistor section(200) prevents a voltage of each cell from being discharged when a voltage of the cell section is off, and makes a voltage of each cell supplied at power-on. An amplification section(300) measures a voltage of each cell at the same time, and consists of a plurality of sample and hold circuits. A multiplex section(400) sequentially controls voltages of the cells output by the amplification section(300). A comparison section(500) judges whether a difference between voltages of the cells provided from the multiplex section(400) exists. An analog to digital converter(600) converts an output signal of the comparison section into a digital signal. A micro computer section(700) receives the digital data signal from the analog to digital converter(600) to compare the received data signal with a previously stored reference value of each cell. A switching section(800) supplies a uniform current and is operated according to an output signal of the micro computer section(700). A charging and discharging section(900) discharges and charges the cells.
Patent KR-20000073573-A (KR)
Inventor: OH CHI SEONG
IPC: F25D11/00
Filed: 1999-05-12
Abstract: PURPOSE: A refrigerator is provided to save power by turning on a display in needy. CONSTITUTION: A back light(51) lights only when an operator wants to figure out what information is displayed or resets each function. The back light is controlled by a back light controller(61) and a back light switch(20). The back light controller controls the back light by the selection of an input unit such as a touch screen or a selecting button(13) from a display controller(12). After a final operation of the input unit is finished and a certain time passes by, the controller turns the back light off.
Patent KR-19990064952-A (KR)
Title: 쇠비름추출물을 이용한 항암제
Filed: 1999-05-28
Abstract: 본 발명은 각종 암세포 성장을 억제할 수 있는 항암기능을 가진 쇠비름(학명: Portulaca oleracea L. ) 추출물을 이용한 항암제에 관한 것이다. 
     즉 본 발명은 쇠비름을 헥산, 메탄올 등의 용매를 사용하여 용해한 후 고순도의 쇠비름추출물을 구하는 것으로서, 본 발명에 의하여 얻어진 쇠비름추출물은 정상세포에는 거의 영향을 미치지 않으나 각종 암세포, 즉 간암세포, 대장암세포, 위암세포, 자궁경부암세포 등에는 탁월한 암세포 성장억제력을 발휘하여 각종 암의 치료효과를 기대할 수 있는 것이다.
Patent KR-20010002414-A (KR)
Title: Car audio system
Inventor: HUH TAE SU
IPC: G11B20/02
Filed: 1999-06-15
Abstract: PURPOSE: A car audio system is provided for users to listen to CD level quality music without sound quality deterioration due to vibration or scratch and to remove/store MP3 music file by using IC card in which users can store/remove MP3 files. CONSTITUTION: The car audio system includes an IC card(3), an IC card reader part(10), a display, a central controlling part(30), a D/A converting part(40) and an audio outputting part(50). The IC card(3) has a semiconductor memory in which users can store/remove data of MP3 file form. The IC card reader part(10) inputs/outputs the IC card(3) and reads data of MP3 file form stored in the semiconductor memory of the IC card(3). The display displays letter and graphic. The central controlling part(30) executes one mode selected from radio, audio tape, TV and MP3 according to order of users and displays the selected mode and state of action on the display. If the system is on MP3 mode, the central controlling part(30) decompresses compressed data which are read from the IC card reader part(10) and converts them to digital audio signals of bit stream form and outputs them. The D/A converting part(40) converts the digital audio signals output from the central controlling part(30) to analog audio signals and outputs them. The audio outputting part(50) outputs a mode, which is selected and executed in the central controlling part(30), and audio signals output through the D/A controlling part(40).
Patent KR-20010003084-A (KR)
Inventor: KIM HEE SUG
IPC: G06F3/0354
Filed: 1999-06-21
Abstract: PURPOSE: A wireless mouse device is provided to simplify a constitution and to reduce a production cost by transmitting data with an infrared signal. CONSTITUTION: In operating a wireless mouse(10) by a user, a click signal or a signal to indicate a position on a monitor(90) is inputted to an encoder from a control system. The encoder codes the inputted signal and outputs into an infrared-transmitting unit. The infrared-transmitting unit transmits the coded data to a receiver(20) as an infrared signal. An infrared-receiving unit receives the infrared signal. A filtering unit receives and filters the infrared signal. An amplifying unit amplifies the filtered signal. A stabilizing unit stabilizes and outputs the amplified signal into a computer(80).
Patent KR-20000016893-A (KR)
Title: Stabilizer for door glass
Inventor: MIURA HITEYA
IPC: B60J1/17
Filed: 1999-06-28
Abstract: PURPOSE: A stabilizer for a door glass is provided to maintain the lifetime of a contact body for a long time by preventing the contact body from damaging and to simply prevent a shake from easily generating between a door glass and a door panel. CONSTITUTION: The stabilizer for a door glass installs:a support member(1) attached on a door panel(a) installed inside of a door of a vehicle; a contact body(10) installed on the support member and contacted with a door glass(c) to guide the upward/downward movement of the door glass and support it; a first semi-body(2) where the support member is attached to the door panel; a second semi-body(3) assembled to the first semi-body to install the contact body on the surface; a main part(10a) arranged on the front face to the door glass of the second semi-body; and a lower rounded part(10b) arranged by extending itself to the rear face, bypassing the lower part of the second semi-body.
Patent KR-20010004473-A (KR)
Inventor: HWANG IN SU
IPC: B60K5/12
Filed: 1999-06-29
Abstract: PURPOSE: An engine mount of an automoible effectively damps a vibration having a large displacement of low frequency and a vibration having a small displacement of radio frequency, and prevents deterioration of a damping effect in the vibration. CONSTITUTION: A groove portion(240) is formed by protruding the middle portion of an upper plate(210) and a lower plate(220) of an engine mount downwards, respectively. A rubber plate(500) having a discharge hole(510) in a bottom surface and around a side surface is mounted in the groove portion(240). When a displacement of a vibration is large, the rubber plate(500) adheres closely to a through hole portion(250) of the upper(210) and the lower plates(220) and a fluid flows through an orifice tube(230), therefore a vibration is damped. When the displacement of the vibration is small, a small quantity of fluid flows through the discharge hole(510), therefore the vibration is damped. When the respective vibrations of a large displacement and a small displacement are transferred to an engine mount, simultaneously or complexly, a damping effect is generated by the vibration of the orifice tube(230) and the rubber plate(500).
Patent KR-20010004837-A (KR)
Inventor: SEO GWAN HO
IPC: B60R21/207
Filed: 1999-06-30
Abstract: PURPOSE: A side air bag cushion of a vehicle is provided to distribute flow of gas evenly through a whole cushion by preventing concentration toward a second expansion part, thereby preventing damage of passengers who sit in a bad posture due to the rapidly expanding cushion. CONSTITUTION: A side air bag cushion of a vehicle includes a first partition film(200) for connecting an upper part(500) to a lower part(100), and formed with an auxiliary discharge hole(212) at a side and a discharge hole(211) at a top part to form a single discharge part(110), a sewing part(230) connecting a part of the upper part and a part of the lower part to a lower part of the discharge hole of the discharge part for discharging gas gathered to the discharge part while separating, wherein the sewing part is torn off by a force more than a predetermined pressure applied by the gas so that the upper and lower parts are separated from each other, thereby rapidly discharge the gas via the discharge hole.
Patent KR-20010010314-A (KR)
Inventor: CHO NAM SEON
IPC: H04M1/274
Filed: 1999-07-19
Abstract: PURPOSE: An apparatus for confirming register information is provided to read the first telephone number key inputted by a user to previously detect the register information, in a communication device having multi functions for inputting telephone number keys through a handset, so as to display the register information to make the user previously confirm the register information. CONSTITUTION: If a user inputs the first key in a key input circuit(1), the key input circuit(1) supplies a key signal corresponding to the first key to the first decoder(2). The decoder(2) decodes the first key signal and supplies the decoded first signal to a controller(4). The controller(4) reads the supplied first key signal, and sequentially compares the first key with register information prestored in a memory(3), then extracts similar register information to supply the similar register information to the second decoder(5). The second decoder(5) decodes the register information, and supplies the decoded register information to an information generator(6). The information generator(6) generates information corresponding to the register information supplied from the second decoder(5), and supplies the information to a register information displaying device(7). The register information displaying device(7) displays the generated information.
Patent KR-20010010527-A (KR)
Inventor: JUNG CHANG WON
IPC: H04B1/40
Filed: 1999-07-21
Abstract: PURPOSE: A method for automatically switching a speaker phone mode in a terminal is provided to automatically switch the speaker phone mode into a receiver mode when a user accesses a cellular phone to a user's ear while using the cellular phone in the speaker phone mode, and thereby protecting user's ears from being hurt because of a sound outputted from a speaker. CONSTITUTION: A controller confirms whether a current terminal state is converted into a communication state(S1). The controller monitors whether a speaker phone switching button is pressed by a user(S2). If the current terminal state is the communication state and the speaker phone switching button is not pressed, the controller performs a communication operation in a receiver mode(S3). If the current terminal state is the communication state and the speaker phone switching button is pressed, the controller performs a communication operation in a speaker phone mode(S4). The controller checks whether a user access is sensed. If so, a port sensor is turned on to generate a user access monitoring signal, and applies the user access monitoring signal to the controller(S5). According to the user access monitoring signal, the controller switches the speaker phone mode into the receiver mode, and performs the communication operation(S6).