baber/WOPTO huggingface dataset:
Patent KR-20030037460-A (KR)
Title: Manufacture of elastic fabric
Inventor: LEE YONG HO
IPC: D03D15/00
Filed: 2001-11-05
Abstract: PURPOSE: A manufacturing method of elastic fabric which is characterized by having excellent elasticity, repulsive elasticity and drapability is characterized by using a modified polyethylene terephthalate of high elasticity and a polytrimethylene terephthalate of low elasticity. CONSTITUTION: A manufacturing method of elastic fabric comprises the steps of: preparing a modified polyethylene terephthalate and a polytrimethylene terephthalate; manufacturing side-by-side type latent crimping conjugate fiber; twisting the conjugate fiber with below 2000times/m of twist; weaving elastic fabric using the grey yarn as a warp and a weft; and alkali-reducing the quantity of the fabric to below 30% of a weight loss rate.
Patent KR-20030038259-A (KR)
Title: Method removing interferenences for mobile telecommunication system
Inventor: YOON HYEON YEONG
IPC: H04B15/00
Filed: 2001-11-10
Abstract: PURPOSE: A method for canceling interference of a mobile communication system is provided to reduce an error of interference signal estimation and improve interference cancellation performance. CONSTITUTION: Received signals are classified by high-speed, medium-speed, and low-speed groups according to data rates(S1-S3). Base band signals to the rest signals except user signals of k number of users are generated(S4). A signal speed group to which the user signals of k number of users belong is compared with an interference signal speed group(S5,S6). To the high-speed group, an interference signal is cancelled by applying an SIC(Successive Interference Cancellation). To the medium-speed and low-speed groups, an interference signal is cancelled by applying a PIC(Parallel Interference Cancellation), wherein the interference signal is cancelled by using different interference coefficients in canceling the interference signal in the same group, canceling the interference signal of the low-speed group in the medium-speed group, and canceling the interference signal of the medium-speed group in the low-speed group(S7-S12).
Patent KR-20030039937-A (KR)
Title: The surface treatment of electrodeposited copper foil for Printed Circuit Board
Inventor: CHOI CHANG HUI
IPC: H05K3/38
Filed: 2001-11-16
Abstract: PURPOSE: A surface treatment method is provided to increase adhesive force between the copper foil and polymer resin and prevent defects by performing a plasma treatment process rather than a polar polymer deposition process. CONSTITUTION: A surface treatment method comprises the first step(S100) of forming a nodule on the surface of a copper foil through a roughening process; the second step(S110) of plating the nodule with a different metal; the third step(S120) of depositing a polar polymer on the metal plated in the second step; and the fourth step(S130) of plasma treating the polar polymer.
Patent KR-20020045548-A (KR)
Inventor: HINO KAZUYA
IPC: C23G1/20
Filed: 2001-12-05
Abstract: PURPOSE: To provide an alkali cleaning solution suitable for the cleaning of metallic materials such as aluminum, an aluminum alloy or the like after forming process, and to provide a cleaning method using the solution. CONSTITUTION: The cleaning solution for aluminum or an aluminum alloy is an alkali cleaning agent containing a vanadium compound by >=0.01 g/L as vanadium atoms. As the aluminum alloy cleaning solution, an alkali cleaning solution containing at least one kind of alkali builders selected from hydroxides of alkali metals, salts of inorganic phosphoric alkali metals and salts of carbonic alkali metals by 0.5 to 50.0 g/L, a vanadium compound by 0.01 to 10 g/L as vanadium atoms and a surfactant by 0.1 to 10.0 g/L, and whose pH is 9.0 to 13.0 is preferable. The alkali cleaning solution is heated at 30 to 80°C and is contacted with the surface of aluminum or an aluminum alloy for >=2 sec by a spray method or a dipping method, and cleaning is performed there.
Patent KR-20030046770-A (KR)
Title: an apparatus trimming a strip edge
Inventor: JU JEONG SEOP
IPC: B21B45/00
Filed: 2001-12-06
Abstract: PURPOSE: A strip edge trimming apparatus is provided to prevent a strip from being scratched due to a scrap by directing a cutting direction of rollers towards an outer portion of a strip proceeding direction. CONSTITUTION: A strip edge trimming apparatus includes a pair of inlet-side strip support rolls(11,13) provided at an inlet-side of upper and lower rollers(5,7) so as to selectively support an upper surface or a lower surface of a strip(1). An outlet-side strip support roll(15) provided at an outlet-side of upper and lower rollers(5,7) so as to support the lower surface of the strip(1). The inlet-side strip support rolls(11,13) and the outlet-side strip support roll(15) are lifted by a strip support section(3). A roller rotating section(9) is provided to rotate a gear box(17) to guide an edge strip(77) to an outer portion of the strip(1).
Patent KR-20030047479-A (KR)
Title: Sliding draining board
Inventor: JIN KYUNG HEE
IPC: A47B33/00
Filed: 2001-12-10
Abstract: PURPOSE: A sliding type top plate for a sink is provided which is joined to a washbasin for a dual use. CONSTITUTION: When an additional top plate is required, a sliding type top plate(4) is pulled and joined to a washbasin(1). When a wide space is required on the washbasin(1) during the washing of dishes, the sliding type top plate(4) is pushed under an existing top plate(2) by a slidable manner so as to use a wider space on the washbasin(1).
Patent KR-20030012783-A (KR)
Title: Cavity-Preventing Type Reactor and Method for Fabricating Preform for Plastic Optical Fiber Using the Same
Inventor: CHO HAN SOL
IPC: G02B6/00
Filed: 2001-12-13
Abstract: PURPOSE: A reactor for preventing a cavity and a method for manufacturing a base material for a plastic optical fiber using the same are provided to prevent the cavity formation due to volume contraction phenomenon by controlling a refractive index grade of a radius direction and a longitudinal direction. CONSTITUTION: An input unit(10) includes a reactant inflow hole(11) for flowing a reactant in the whole of a reactor. A reacting unit(20) is provided by setting a blocking wall(32) between the reacting unit(20) and the input unit(10) and includes a channel(21) connecting to the input unit(10) on the center of the blocking wall(32). A cavity blocking structure(30) is installed between the channel(21) of the reacting unit(20) and the reactant inflow hole(11) of the input unit(10) so that a cavity is not continued to the reacting unit(20), and includes one or one more channels(31) so that the reactant flows in the reacting unit(20).
Patent KR-20030049437-A (KR)
Title: Method for call reservation of multi handset
Inventor: PARK GYEONG YONG
IPC: H04M1/72
Filed: 2001-12-15
Abstract: PURPOSE: A call reserving method of a multi-handset is provided to enable a phone with the multi-handset to reserve a call through the other handset, if one handset is busy. CONSTITUTION: A portable unit decides whether a handset occupies a call(S310). If so, a fixed unit notifies a call occupied state to the portable unit, and the portable unit displays the call occupied state(S320). If the handset under the call occupied state ends the call(S330), the fixed unit notifies the end of the call to each handset(S340). Another handset searches its memory to decide whether to be in a call reserved state(S350). If in the call reserved state, the corresponding handset requests occupation of a speech path(S360). And the handset notifies a user of a call occupied state according to the call reservation(S370).
Patent KR-20030050390-A (KR)
Title: Battery apparatus
Inventor: KANG HYO BONG
IPC: H01M2/20
Filed: 2001-12-18
Abstract: PURPOSE: Provided is a battery device which is useful to maximize a converting efficiency of system by actively changing a cell structure of battery according to usage frequency of converter in the system. CONSTITUTION: The battery device comprises a plurality of battery cells(C1-C6) for charging/discharging of electric power source, and a switch positioned between the battery cells(C1-C6), wherein the plurality of battery cells(C1-C6) are variably connected by the switching motion in parallel/series. The battery cells(C1-C6) are connected in parallel and reduce an output voltage when usage frequency of step down converter of the system is low, while the battery cells(C1-C6) are connected in series and increase an output voltage when usage frequency of the step down converter is high.
Patent KR-20030056951-A (KR)
Title: Moving method for cursor pointing of graphic objects using direction keys
Inventor: LEE BYEONG HO
IPC: H04Q9/00
Filed: 2001-12-28
Abstract: PURPOSE: A method for moving a cursor position of a graphic object by using a directional key is provided to adjust each scope up to the angle of 180 degrees, so as to move the cursor to a graphic object located in the shortest distance within each range, if a graphic object does not exist within each scope of corresponding directions. CONSTITUTION: From a reference point of a current active graphic object, a focus is moved to a graphic object existing in the shortest distance on the basis of a side of a square in a direction corresponding to a directional key signal selected by a user. Reference points of the each graphic object are two apexes of the side for the selected direction of the square surrounding the outline of each graphic object. If a graphic object does not exist in the corresponding direction, a distance between each reference point of graphic objects existing within a certain angle in the direction corresponding to the directional key signal selected by the user from the center of the current active graphic object is calculated, to move the focus to a graphic object arranged in the shortest distance.
Patent KR-20030057153-A (KR)
Title: array panel for reflective liquid crystal display devices and manufacturing method of the same
Inventor: CHOI SU SEOK
IPC: G02F1/1335
Filed: 2001-12-28
Abstract: PURPOSE: An array panel for a reflection type LCD(Liquid Crystal Display) device and a manufacturing method thereof are provided to improve brightness in the front part of an LCD device by forming prominences and depressions and a pixel electrode of a conductive material and to enhance the reflecting efficiency by enlarging a forward reflecting area. CONSTITUTION: Many gate lines and data lines(161) are formed on a substrate(110). A thin film transistor(T1) is formed at the intersection of the gate line and the data line. A first passivation layer(170) is formed on the whole surface of the substrate. An opaque pixel electrode is formed on the first passivation layer. The upper portion of the first passivation layer has the structure of prominences and depressions having a first lateral face and a second lateral face. One lateral face is slower than the other one.
Patent KR-20030058364-A (KR)
Title: Synthetic aperture focusing method for ultrasound imaging based on planar waves
Inventor: JANG JIN HO
IPC: G01S15/89
Filed: 2001-12-31
Abstract: PURPOSE: A synthetic aperture focusing method is provided to allow for a bi-directional dynamic focusing and achieve a superior lateral resolution of image. CONSTITUTION: A synthetic aperture focusing method comprises a first step of generating a planar wave(36); a second step of transmitting the planar wave to a diagnosis object through a plurality of transducers; a third step of receiving the echo signals reflected from the diagnosis object through the transducers, and storing the received signals in a pattern memory; and a fourth step of performing a dynamic focusing on the received echo signals.
Patent KR-20010074692-A (KR)
Title: 제지 공정에서의 미립자 시스템
IPC: D21H11/14
Filed: 1999-07-09
Abstract: 알칼리 및 산 종이 제품의 제조에 사용되는 미립자 시스템을 포함하는 본 발명의 보유 및 배수 조제는 알루미늄 치환된 3중 팔면체 광물을 포함하는 무기 미립 물질 및 응고제 중합체와 임의 성분으로 양이온성 응고제를 포함한다. 중합체 응집제는 팬 펌프 다음 및 압력 스크린 이전에 공급액에 첨가되고; 무기 미립 물질은 압력 스크린 후에 공급액에 첨가되고, 경우에 따라서는 응고제가 팬 펌프 이전에 첨가된다.
Patent KR-20010072103-A (KR)
Title: 와이퍼 시스템
IPC: B60S1/34
Filed: 2000-05-25
Abstract: 본 발명은 적어도 한쪽 단부에서 와이퍼 베어링(20)의 베어링 하우징(22, 46)의 돌출부(30, 40)에 견고하게 연결된 관형 플레이트(10)를 포함하는 와이퍼 시스템에 관한 것이다.  본 발명에 따라서 상기 관형 플레이트(10)는 연결 영역(24)에서 확장 단면(26)을 갖는다.
Patent KR-20010074949-A (KR)
Title: 바이러스성 감염 및 관련 질환의 치료 방법 또는 예방 방법
IPC: A61K31/506
Filed: 1999-09-03
Abstract: 본 발명은 바이러스성 감염 및 이와 관련된 질환의 치료 방법 및 예방 방법을 제공하는 것에 관한 것이다.
Patent KR-20010089378-A (KR)
IPC: H01J1/20
Filed: 1999-10-25
Abstract: 환원성 원소를 포함하는 기체 상에 전자 방사 물질층이 형성된 음극에 있어서, 기체의 층 형성용 면을 A, 기체와 전자 방사 물질층의 접촉 면적을 B로 하여, 0.24 ≤ B/A ≤ 0.93으로 한다.   또, 기체의 두께를 C, 전자 방사 물질층의 두께를 D로 하여, 0.4 ≤ D/C ≤ 0.7로 한다.   이렇게 하여, 충분한 전자 방사가 얻어지고, 동작중의 전자 방사의 경시 감소가 적고, 컷오프 전압의 변동이 작은 음극 구조체를 제공한다.
Patent KR-20010083953-A (KR)
IPC: B01L3/02
Filed: 1999-11-05
Abstract: 연속하는 팁이 탑재용 샤프트 위에 탑재되고 그로부터 배출될 때 그것에 의해 각각 약 2 파운드와 1파운드의 축방향의 탑재력과 배출력을 적용함으로써 피펫 팁이 쉽게 그리고 단단히 피펫 팁 탑재용 샤프트 위로 탑재되고 그로부터 쉽게 배출될 수 있는, 탑재용 샤프트와 균일한 팁 간섭을 유지하도록 탑재용 샤프트가 피펫 팁으로 들어가는 균일한 깊이를 보장하기 위한 수단(52)과 조합되는, 축방향으로 이격된 환상 시일링을 형성하며 실질적으로 실린더형인 측방향 지지 구역(36, 38)와 영역(46,48)을 피펫의 탑재용 샤프트와 팁 위에 각각 가지는 공기 변위 피펫(10).
Patent KR-20010107953-A (KR)
Filed: 1998-11-10
Abstract: 본 발명은 신규한 결정질 형태의 일반명 오메프라졸로 알려져 있는 5-메톡시-2-[[(4-메톡시-3,5-디메틸-2-피리디닐)메틸]술피닐]-1 H -벤즈이미다졸에 관한 것이다.  또한, 본 발명은 신규한 결정질 형태의 5-메톡시-2-[[(4-메톡시-3,5-디메틸-2-피리디닐)메틸]술피닐]-1 H -벤즈이미다졸의 위장 장애 치료를 위한 용도, 이를 함유하는 제약 조성물 뿐만 아니라 신규한 결정질 형태의 5-메톡시-2-[[(4-메톡시-3,5-디메틸-2-피리디닐)메틸]술피닐]-1 H -벤즈이미다졸을 제조하는 방법에 관한 것이다.
Patent KR-20010081067-A (KR)
IPC: A61K31/50
Filed: 1999-11-30
Abstract: 화학식 (I)로 표현되는 3(2H)-피리다지논 유도체 또는 약리적으로 허용되는 이들의 염을 포함하는 발기기능장애 치료제; 
     
       
     
     여기서 각 기호는 명세서에서 정의된 것과 같다.
Patent KR-20010090881-A (KR)
IPC: G01N33/553
Filed: 1999-11-22
Abstract: 본 발명은 매질 중에 존재하는 분석물을 검출하기 위한 저렴하고 감도 높은 시스템 및 방법을 제공한다.  시스템은 표적 분석물과 결합할 수 있도록 개질된 기능화된 미소구와 같은 회절 증강 요소를 포함한다.  추가로, 시스템은 분석물-특이적 수용체의 소정의 특이적 패턴이 그 위에 프린팅된 금속 코팅을 포함할 수 있는 중합체 필름을 포함한다.  표적 분석물을 직접적으로 또는 회절 증강 요소와 함께 중합체 필름의 선택 영역에 부착시킬 때, 투과된 및(또는) 반사된 빛의 회절이 분석물의 물리적 치수 및 정해진 정확한 배치를 통해 일어난다.  눈으로 또는 임의적으로 감지 장치를 사용하여 용이하게 볼 수 있는 회절 상이 생성된다.
Patent KR-20010101795-A (KR)
IPC: H04W88/06
Filed: 2000-11-23
Abstract: 무선 전화와 유선 전화 사이의 진행중인 호 전달은, 상기 디바이스 사이의 근거리 무선 통신 링크를 사용하여 달성된다. 각 디바이스가 근거리 라디오 또는 적외선 트랜시버를 포함하도록 제공되어, 디바이스는, 일정한 근거리 무선 프로토콜을 사용하는 것이 바람직한 근거리 무선 통신 링크를 통해 서로 통신할 수 있다. 무선 전화의 배터리가 거의 소모될 때, 또는 사용자가 원할 수 있는 임의의 다른 이유 때문에, 무선 전화는, 근거리 무선 통신 링크를 통해 유선 전화와 통신함으로써 유선 전화의 전화 번호를 요청한다. 유선 전화의 전화 번호를 수신하자마자, 무선 전화는, 셀룰러 기지국으로 호 전달 요청을 송출하고, 유선 전화의 전화 번호를 전달한다. 그 다음에, 기지국 및 네트워크는 상기 호를 유선 전화로 재-라우팅한다.
Patent KR-20020052144-A (KR)
IPC: B41J2/315
Filed: 1999-10-04
Abstract: 블랙 매트릭스는 예를 들면 디스플레이 용도에 사용되기 위한 리셉터 기판상에 열전사에 의해 형성될 수 있다.  이 블랙 매트릭스는 콘트라스트를 제공하고/하거나 인접한 전기전도성 부품들을 분리시키는, 예를 들면 칼라필터 블랙 매트릭스 또는 TFT(박막 트랜지스터) 블랙 매트릭스로서 사용될 수 있다.
Patent KR-20020057809-A (KR)
Title: Paramagnetic metal-phthalocyanine complex compounds and contrast agent using the same
Inventor: KOO GYO IM
IPC: C07F13/00
Filed: 2002-01-02
Abstract: PURPOSE: Provided are a paramagnetic metal-phthalocyanine complex compound, its pharmaceutically acceptable salt and a contrast agent using them, to improve resolution of image and safety to a human body. CONSTITUTION: The paramagnetic metal-phthalocyanine complex compound is represented by the formula(I), wherein M is Gd(III) or Mn(II or III), and R and R1 are individually OCH2CH2OCH2CH2OCH2CH2OCH3. The contrast agent contains the followings: a compound combined with a macro molecule selected from the group consisting of amino acids, polypeptides, proteins and polysaccharides; pharmaceutically acceptable carriers, or excipients.
Patent KR-20020060596-A (KR)
Title: Screw press dewatering machine
Inventor: MORO YOSHIYUKI
IPC: B01D33/11
Filed: 2002-01-09
Abstract: PURPOSE: To provide a screw press type filter device capable of maintaining the constant water content of the stuff to be discharged even when the quantity of treatment is fluctuated. CONSTITUTION: The screw press type filter device in which a screw 4 is rotatably inserted inside a substantially cylindrical filtering body 10, and the stuff to be treated fed between one end of the screw 4 and the filtering body 10 is filtered by the filtering body 10 while carrying the stuff to the other end side by the rotation of the screw 4 comprises a back pressure valve 21 which is provided on a discharge port 9 on the other end side of the filtering body 10 to suppress the discharge of the filtered stuff, an air cylinder 22 which feed the pressure for suppressing the discharge of the stuff to the back pressure valve 21, an opening detection unit 30 for detecting the openings of the discharge port 9 and the back pressure valve 21, and a control unit 40 which controls the air cylinder 22 so as to feed the pressure according to the opening to the back pressure valve 21 based on the result of detection by the opening detection unit 30.
Patent KR-20030060486-A (KR)
Title: Project lens unit of projection TV
Inventor: NOH JEONG HO
IPC: G02B7/02
Filed: 2002-01-09
Abstract: PURPOSE: A projection lens unit of a projection television set is provided to project and display an image generated from an image generation source on a screen. CONSTITUTION: A projection lens unit(38) of a projection television set includes the first and second lens units and a reflecting mirror(44c). The first lens unit condenses an image received from an image generation source(46). The reflecting mirror reflects the image transmitted from the first lens unit. The second lens unit has the same optical axis as the optical axis of the first lens unit, and magnify the image reflected by the reflecting mirror to project the magnified image on a screen. The first and second lens units are respectively included in the first and second single bodies(40,42). The first and second single bodies are connected with the third single body(44) having the reflecting mirror so that an image from the first single body is reflected to the second single body.
Patent KR-20030051121-A (KR)
Title: A PC based TV set-top box system and Method of providing contents exclusively by the system
Inventor: RA IN SIK
IPC: H04N7/16
Filed: 2002-01-10
Abstract: PURPOSE: A PC-based TV set-top box system and a method for exclusively providing contents are provided to connect to the allowed Internet sites by using a PC-based TV set-top box and set-top box driving software. CONSTITUTION: A PC(130) is loaded with a dedicated browser(136) and driving software(135) for driving a set-top box(106). When the set-top box is initially installed, the PC connects to a specific site for registering subscriber data, and executes serial communication with the set-top box for requesting log-in to a server(142) if the PC receives a driving request signal from the set-top box. If the log-in is authenticated, the PC drives the dedicated browser and transmits driving permission to the set-top box. A remote control(104) is provided to operate the set-top box. The set-top box connects a TV(102) with the PC. If the set-top box receives an on-signal from the remote control, the set-top box communicates with the PC to request driving. If the set-top box receives a specific code request signal from the PC, the set-top box provides the specific code preliminarily set. If the PC sends a driving permit signal, the set-top box operates normally for transmitting video and audio signals of the PC to the TV.
Patent KR-20020030038-A (KR)
Title: Formed compost for rasing seeds and it's manufacturing method.
Inventor: KIM HONG JAE
IPC: A01G9/10
Filed: 2002-01-15
Abstract: PURPOSE: A process of preparing bed soil for raising seedling containing highly moisture-absorbable material and having excellent air permeability is provided which can raise rice seedlings cultured for 8 to 10 days by supplying water only one time. CONSTITUTION: The bed soil comprises 20 to 40% by weight of dried vermiculite powder, 20 to 40% by weight of ground chaff, 20 to 40% by weight of perlite, 5 to 15% by weight of defatted cellulose, 4% by weight or less of a humectant and 2% by weight or less of a binder. The bed soil contains seeds in it, thereby remarkably reducing labor power required for raising seedling.
Patent KR-20030065897-A (KR)
Title: Structure of concrete ballast track and construction method thereof
Inventor: LEE MU KWANG
IPC: E01B2/00
Filed: 2002-02-01
Abstract: PURPOSE: A structure of a concrete ballast track is provided to secure enough working hours and to cut down the expenses by executing a replacement work in operation hours of trains and constructing with general concrete possibly. CONSTITUTION: The structure of a concrete ballast track comprises: a pair of rails(10); many concrete sleepers(20) fastened to the lower side of each rail(10); a fastener(30) fastening the concrete sleeper(20) to the lower side of the rail(10); many rail supports supporting the rail(10) against the roadbed; forms effected on both sides of the roadbed; and a concrete ballast(60) formed with concrete placed between the concrete sleeper(20) and the form to distribute the load of the rail(10) evenly on the roadbed.
Patent KR-20030067350-A (KR)
Title: Structure of cavity for microwave oven
Inventor: KIM DAE EUN
IPC: F24C15/16
Filed: 2002-02-08
Abstract: PURPOSE: A cavity structure for microwave oven is provided to allow a single cavity of the microwave oven to have a wide variety of capacities. CONSTITUTION: A cavity structure comprises a cavity(40) having a cavity(42); and a tray mounting unit including the first and second tray mounting portions(50,60). The tray mounting unit is formed at the bottom surface of the cavity in such a manner that the tray mounting unit is stepped into at least two stages and recessed into a concentric fashion. A tray for rotating a foodstuff is disposed on the tray mounting unit.
Patent KR-20030069411-A (KR)
Title: Manufacture method and that system of roll type vinyl shopping bag
Inventor: JUNG KYUNG SOO
IPC: B29C65/74
Filed: 2002-02-20
Abstract: PURPOSE: A method and device for manufacturing a roll type vinyl bag is provided to meet the convenience of users by users using and tearing off a sheet of vinyl bag, and to improve productivity by reducing the length of a manufacturing process. CONSTITUTION: A saw-toothed cutting tool(22a) is formed at the lower end of a base plate(23). A first and a second heat fused unit(21a,21b) are formed at both sides of the saw-toothed cut. The length of the first heat fused unit is equal to the length of the saw-toothed cut. The separated second heat fused units are formed at both ends of the saw-toothed cut. A cutting tool(25) is formed at the inner end of the second heat fused unit.
Patent KR-20020026503-A (KR)
Inventor: KIM SEONG SOO
IPC: H04B7/26
Filed: 2002-02-19
Abstract: PURPOSE: A device for transmitting a message having a couple code by a wireless transceiving function is provided to simply record a voice or a message to be transmitted to the other party, when two people having one pair of couple devices are near at each other, so as to automatically reproduce the recorded voice or message to transmit the voice or the message to the other party. CONSTITUTION: A signal receiver(11) receives a couple code signal transmitted from the other party of a couple. A couple code analyzer(12) decides whether the signal is a couple code. If so, a memory(13) reproduces a prestored voice message through a speaker. A signal transmitter(14) transmits the couple code signal to the other party after completing a message recording. A signal receiver of the other party receives the couple code signal. A couple code analyzer of the other party decides whether the signal is a couple code. If so, a memory of the other party reproduces a recorded voice message.