baber/WOPTO huggingface dataset:
Patent KR-20010091201-A (KR)
Title: A reinforcing and water-proof process for the wall of building
Inventor: EUM JU BOK
IPC: E04G23/02
Filed: 2000-03-14
Abstract: PURPOSE: A reinforcing and waterproofing method of inner and outer walls of a newly-built or the existing building is provided to promote waterproofing, heat insulating, soundproofing, shock-resisting, chemical-resisting efficiencies, etc. of inner and outer walls of a newly-built or the existing building with a simplified process. CONSTITUTION: In a reinforcing and waterproofing method of inner and outer walls, the rooftop and the inner floor of a newly-built or the existing building, a multifunctional panel, where primary waterproofing layers(2,2'), gelled fragment waterproof layers(3,3') mixed with a rubber element and an adhesive element, polyester woven fabrics(4,4') and secondary waterproof layers(5,5') are piled on both sides of a general Styrofoam heat insulating panel(1), is used.
Patent KR-20000076899-A (KR)
Title: 반도체 장치
IPC: H01L21/306
Filed: 2000-03-17
Abstract: 본 발명은 가드 링(guard ring) 구조를 구비한 반도체 장치에 있어서, CMP 공정을 행한 때에 발생하는 손상을 억제한다. 
     가드 링 패턴을 굴곡을 반복하는 형상으로 형성한다.
Patent KR-20010092104-A (KR)
Title: Apparatus for opening and closing window glass for motor vehicle
Inventor: LEE JUN U
IPC: E05F11/38
Filed: 2000-03-20
Abstract: PURPOSE: A device for opening a window glass in a vehicle is provided to change a roller attached on a regular raider, to freely move the roller in opening or closing the window glass and to prevent the breakage. CONSTITUTION: A window glass opening device for a vehicle comprises a regulator(100) generating power to open a window glass; an inner panel(5) containing the regulator; a sliding shaft(110) mounted on the regulator; a protrusion(130) formed on a side of the sliding shaft; first and second compression springs(160) mounted on both sides of the sliding shaft; a roller(120) installed between the first compression spring and the second compression spring; a guide(140) moving up and down by rotating the roller. The diameter of the second compression spring is smaller than the protrusion. Thus, the second compression spring is not dropped by hanging to the protrusion. Thereby, the guide moves toward up and down by rotating the roller to open or close the window glass by moving the window glass attached on the guide. The window glass-opening device changes the roller to freely move in opening or closing the window glass.
Patent KR-20010039549-A (KR)
Inventor: EZAWA MITSUHARA
IPC: H02K33/16
Filed: 2000-03-24
Abstract: PURPOSE: A vibration generator is provided which is durable, and provides strong thrust and is capable of being reduced in size, cost and weight. CONSTITUTION: The vibration generator includes a movable element(50) having a permanent magnet(60) attached thereto; a stationary element(10) having end faces(23,25) which oppose, across prescribed gaps, respective ones of end faces(53,54) of the movable element, the stationary element being excited by passing a current through an attached coil(30) to form a magnetic path with the movable element; and resilient support members(80) for supporting the movable element so that the movable element can vibrate in a direction in which the stationary element is magnetized by the coil. One pole face of the permanent magnet is arranged to oppose the outer side of the coil, thereby forming a magnetic path in which magnetic flux that emerges from the pole face of the permanent magnet cuts across the outer peripheral side of the coil, penetrates the interior of the coil and then is guided in the direction of N and S poles of the coil. The end faces of the stationary element are excited to desired magnetic poles to thereby vibrate the movable element.
Patent KR-20010092867-A (KR)
Title: An ulterasonic generator
Inventor: KIM GI SEON
IPC: B06B1/00
Filed: 2000-03-27
Abstract: PURPOSE: A ultrasonic generating device is provided to exactly measure output for generating supersonic, to finely control the generation of the supersonic and to display the output state of the supersonic. CONSTITUTION: A ultrasonic generator comprises a position control unit(102) controlling output power by controlling a triac driving signal position according to the level of the power; a current sensor(113) detecting current outputted from an output transformer; a multiplier unit(115) multiplying current and voltage outputted from the current sensor and the position control unit; a rectifying and amplifying unit(118) outputs the voltage by amplifying; an offset control unit(116) controlling offset of the amplified voltage; a span control unit(117); a micom(120) generating warning sound generating control signal and an output power display by changing pulse width changeable signal through applying a pulse width control signal; and an alarm sound generating unit warning over outputting state of the micom; and a display unit displaying the outputting state according to a display control signal.
Patent KR-20000030909-A (KR)
Inventor: JEGAL YOUNG
IPC: H04L12/54
Filed: 2000-03-30
Abstract: PURPOSE: Two bytes characters stream recipient ID E-mail mailing service system of a computer communication or an internet E-mail is provided to process two bytes character stream without an encoding or a decoding process. CONSTITUTION: Two bytes characters stream recipient ID E-mail mailing service system of a computer communication or an internet E-mail forms a mail address ID database formed with two bytes character stream independently of a mail server for managing a mail reception routing path. The mail address ID database processes a mail received to a host with a mail server. A transmitted mail is stored to a mail reception box if a character stream corresponding to a recipient ID of the transmitted mail exits on the mail address ID database. The transmitted mail is intercepted if not.
Patent KR-20000063082-A (KR)
Title: 다면체 유기규소 화합물 및 그의 제조방법
IPC: C08G77/22
Filed: 2000-03-30
Abstract: 고분자량화가 가능하며, 기재와의 밀착성이 우수한 고경도, 고투명성의 발수ㆍ발유성 막을 형성할 수 있고, 유기용매에 가용이고 안정한 유기불소기 또는 유기불소기와 반응성 관능기의 양측을 갖는 다면체 유기규소 화합물이 개시되었다. 
     하기 화학식 1 내지 3으로 나타나고, 퍼플루오로알킬기 또는 퍼플루오로알킬기와 반응성 관능기의 양측을 가지며, 다면체 구조를 갖는 것을 특징으로 하는 다면체 유기규소 화합물. 
     
       
         [Rf1 - X1 - (CH 2 )a - SiO 1.5 ]m 
       
     
     
       
         [Rf1 - X1 - (CH 2 )a - SiO 1.5 ]m [Rf2 - (X2)c - (CH 2 )b - SiO 1.5 ]n 
       
     
     
       
         [Rf1 - X1 - (CH 2 )a - SiO 1.5 ]m [R - (X2)c - (CH 2 )b - SiO 1.5 ]n 
       
     
     (식 중, Rf1, Rf2 는 퍼플루오로알킬기, R 은 반응성 관능기, X1, X2 는 2 가 결합기, a, b 는 0 ∼ 10 의 정수, c 는 0 또는 1, m 및 n 은 1 ∼ 19 의 정수로서 m + n 이 4 ∼ 20 의 정수)
Patent KR-20010094409-A (KR)
Title: Semiconductor package and its manufacturing method
Inventor: YANG JUN YEONG
IPC: H01L23/12
Filed: 2000-03-30
Abstract: PURPOSE: A semiconductor package and a method for manufacturing the same are provided to increase an integration degree and to reduce a mounting area and manufacturing costs. CONSTITUTION: Wafers(12) having same size are adhered by an adhesive agent. The wafers(12) are sawed into a plurality of semiconductor chips(10). The sawed semiconductor chips(10) are mounted on an inner end of a lead(24) of a leadframe(14). The outer end of the lead(24) is firstly and secondly cut in order to adhere a bonding pad formed on the semiconductor chips(10). Then, the exposed semiconductor chips(10) are molded by an epoxy region(16).
Patent KR-20000036886-A (KR)
Inventor: PARK BYUNG JOON
IPC: G06F17/30
Filed: 2000-03-31
Abstract: PURPOSE: A method for searching dynamic multi web view is provided to simply connect to a site of a title that a user wants, by storing screen information of necessary title in a personal computer. CONSTITUTION: A method for searching dynamic multi web view has five steps. A first step is to decide whether the user is connected to a server supplying a plurality of sub-title information. A second step is to decide whether basic screen information , selected by the user after being connected to the server, in a database. A third step is to supply an initial screen indicating a main title, when the basic screen information is not stored in the database. A fourth step is to supply basic screen information of a sub-title belonging to the main title after supplying the initial screen. A fifth step is to supply the screen information of the sub-title in response to the request of the user after supplying the basic screen information.
Patent KR-20000037436-A (KR)
Inventor: JANG SEUNG UNG
IPC: G06F17/00
Filed: 2000-04-24
Abstract: PURPOSE: A method for maintaining internet members is provided to maintain many and unspecified persons on an off-line system, by utilizing belongings of members registered in an internet web site which an operator sets up. CONSTITUTION: A method of maintaining internet members for utilizing member's belongings as advertising media, comprises the steps of: making an operator give a membership number for being displayed in a member's belonging, when the member inputs personal information and registers; making the operator set up a personal advertisement window for the member of the operator's homepage; making the operator supply the personal information of the member to other people connected to the homepage by opening the personal advertisement window, after watching the membership number(an identification, a nick name, a resident registration number); and making the operator lead the other people to register to be supplied with additional services.
Patent KR-20010105504-A (KR)
Title: Nutrient supplying method to pot using double wicks and double nutrient channels
Inventor: SON JUNG EEK
IPC: A01G9/02
Filed: 2000-05-12
Abstract: A cosmetic product is provided for removing keratotic skin plugs. The product includes a flexible non-occlusive substrate sheet onto which a composition containing an anionic or nonionic polymer is deposited. The composition is treated to become dry non-tacky to the touch yet upon being wetted for use the composition again turns tacky and mobile. The method of application involves either directly moistening the product or indirectly moistening by first wetting a consumer's face in an area where the product is applied. Thereafter, water is allowed to evaporate leaving a film to which the keratotic plugs are bonded. The film is then peeled away concommittingly removing the plugs.
Patent KR-20000053968-A (KR)
Inventor: HAN HYAE SOOK
IPC: G06Q30/08
Filed: 2000-05-12
Abstract: PURPOSE: An internet auction method for sale and purchase of rare currency(including commemoration coins) by connecting suppliers and purchasers through internet is provided to satisfy the desires of the sellers to sell and the purchasers to buy rare currencies. CONSTITUTION: An internet auction method for sale and purchase of rare currency(including commemoration coins) by connecting suppliers and purchasers through internet is composed of information posting and reply to the posting. Individuals, who desire to supply or to purchase the currency, post up the information on the internet site. Individuals, who can satisfy the posted information, post up their replies and initiates the transaction.
Patent KR-20010104842-A (KR)
Inventor: KIM HYOUNG KWANG
IPC: H02H3/12
Filed: 2000-05-16
Abstract: 본 발명은 무부하시, 과부하시, 부하시, 고압선이 대지로 접지 될 때 자동으로 고주파 인버터 회로의 동작을 자동으로 정지시켜 화재를 예방하고 고압선으로부터 감전 사고를 미연에 방지하도록 한 고압 장치의 2차 접지 보호회로에 관한 것으로서, 이러한 본 발명은, 보조 권선을 통해 유기된 전압에 따라 고주파 인버터부를 제어하는 제어부, 제어부의 제어에 따라 정류 및 필터부를 통해 공급되는 전압을 고주파로 변환하는 고주파 인버터부, 무부하시, 과부하시, 부하시, 고압선이 대지로 접지 되면 상기 제어부에서 고주파 인버터부로 공급되는 제어신호를 차단하여 상기 고주파 인버터부의 동작을 자동으로 중지시키는 2차 접지 보호부를 구비하고, 고압선중 한쪽의 고압선이 대지에 접지 되면, 자동으로 2차 접지 보호부가 동작을 하여 상기 고주파 인버터부의 동작을 중지시킴으로써, 화재를 미연에 방지하고, 고압선으로 인한 감전 사고를 미연에 방지할 수 있다.
Patent KR-20010105928-A (KR)
Title: Door of storehouse
Inventor: KIM JONG GWAN
IPC: E05G1/026
Filed: 2000-05-19
Abstract: A procedure for reducing the patulin content in a fruit juice which includes presenting the juice to a resin material having in abundance micropores of less than 20 Å minimun pore width and at least a pore surface capable of retaining patulin by the forces of chemisorption. Preferably the resin has weak base functionality and is substantially devoid of mesopores and macropores. The resin preferably has a surface area of greater than 900 m 2 /g (BET) and the resin has been hypercross-linked whilst in the swollen state. Regeneration involves the conversion of the resin held patulin to a more easily flushed out derivative using ammonia or a volatile base, preferably generated in situ from a high pH solution.
Patent KR-20010109403-A (KR)
Inventor: BAEK HONG GU
Filed: 2000-05-31
Abstract: 본 발명은 치아가 소실된 잇몸부위에 적용하여 치조골에 반영구적으로 결합함으로써 치아의 기능을 대체할 수 있도록 하는 치과용 인공치아의 인공치근에 관한 것으로서, 테이퍼진 고정체 상체부와 고정체 나사부로 이루어져 있는 기본 구조에서, 상기 고정체 상단 외주상에 미소 둥근 나사부를 형성함으로써 인공치근과 턱뼈 사이의 접촉 면적을 종래의 치근들의 나사산보다 48%정도 증가시킴은 물론 응력집중의 방지 및 응력분산 기능을 수행하고 인공치근과 턱뼈 사이의 초기 고정력 및 결합력을 확보하며 이로 인해 턱뼈 상단 부위에서 발생하는 골 흡수 현상을 감소시키고, 고정체 상단 내주면을 미소 각도로 테이퍼지도록 형성함으로써 고정체 시스템이 외부로부터 반복적인 외력으로 인하여 인공치근과 연결기둥사이에 발생되는 풀림 현상을 방지하며, 고정체 나사부에 평평한 나사산 밑 단면혹은 미소각도로 경사진 나사산 밑 단면을 형성함으로써 인공치근과 턱뼈사이에 발생하는 전단응력을 최소화시키고 전단력으로 인하여 발생되는 인공치근과 턱뼈사이의 분리 현상을 방지하고 고정체 시스템에 가해지는 수직하중 성분을 최대로 받도록 하며, 나사산 상단 골, 모든 나사산 끝단 부위의 모서리와 나사산 하단 골 모서리에 라운딩을 형성함으로써 고정체 시스템에 가해지는 수평하중 성분에 의해 턱뼈에서 발생하는 응력을 잘 분산시키고 응력집중을 방지하게 된다.
Patent KR-20010109858-A (KR)
Inventor: KANG CHUNG SEOK
Filed: 2000-06-03
Abstract: 본 발명은 유중수형 에멀젼의 제조방법에 관한 것으로서, 오일상에 수용성 모노머 단량체와 수용성 염을 포함하는 수용액상을 혼합하고 테프론 코팅된 반응기 내에서 교반하여 제조하는 방법으로, 이와같이 제조할 경우 에멀젼이 안정화되어 응집물의 발생이 줄어들게 되므로 생산량을 증가시킬 수 있고 생산성 및 생산단가를 향상시킬 수 있다.
Patent KR-20010111354-A (KR)
Title: Apparatus for transmitting/receiving wireless data and method thereof
Inventor: PARK DONG SIK
IPC: H04L69/40
Filed: 2000-06-10
Abstract: A method for transmitting/receiving wireless data and an apparatus therefor using the quality of application service and features of a coder/decoder (CODEC) of application layer are provided. The method for transmitting/receiving wireless data includes the steps of: determining information related to the application data service as a catalogue; adding header information of each layer referring to the catalogue determined in the above step and error detecting codes to the application data; deciphering a header if data errors are detected by the error detecting codes added to the data during the reception, and transmitting the data to the upper ranking layer according to the quality of service if the deciphered value of the header belongs to the catalogue determined in the above step.
Patent KR-20010111918-A (KR)
Inventor: SUNG BAEK JIN
Filed: 2000-06-14
Abstract: 1. 청구범위에 기재된 발명이 속하는 기술분야 
     LPG차량의 연료탱크 
     2. 발명이 해결하고자 하는 기술적 요지 
     연료탱크에 설치되는 각종 밸브장치를 일체화함으로써 그 구성을 간소화하여 제조원가를 절감하고 각 밸브의 동작이 연계되어 이루어질 수 있도록 된 LPG차량의 연료탱크용 밸브장치를 제공함에 그 목적이 있다. 
     3. 발명 해결방법의 요지 
     연료탱크의 일단에 장착되며, 연료 주입구와 배출구가 형성되어 있는 본체; 
     중간이 수직으로 관통되어 상단이 상기 연료 주입구의 하단과 연통되어 있으며, 중간 내부에 측방으로 개구된 유출구가 형성되어 있는 밸브몸체와, 상단으로부터 유입구가 수직으로 관통되어 상기 유입구를 개폐하는 제1밸브와, 상기 밸브몸체의 내측에서 상기 제1밸브의 하측으로 설치되고 중앙이 수직으로 관통되어 중간에 걸림턱이 형성되어 있는 지지관과, 상기 지지관의 내부에서 상기 걸림턱을 사이에 두고 그 상ㆍ하로 확경부가 형성되어 있는 제2밸브와, 상기 지지관의 하단에서 캠면이 상기 제2밸브의 하단에 접촉되도록 캠축에 의해 설치된 캠과, 상기 캠의 일측으로부터 길게 연장된 링크에 의해 연결되는 플로트로 이루어지는 오버차지 컷 밸브장치; 및 
     상기 캠축의 일단이 측방으로 연장되되 그 일단에 기어가 설치되고, 상기 본체의 일단에서 수직으로 하향 설치된 회전축이 구비되되 이 회전축의 하단에는 상기 기어와 맞물리는 피니언이 설치되며, 상기 회전축의 상단에는 제1자석이 설치되어 있으며, 상기 본체의 윗면에서 상기 제1자석과 대응되는 위치에 인디케이터가 설치되어 상기 회전축의 회전에 따라 자력의 이동에 의해 인디케이터가 회전되도록 된 플로트 게이지장치를 포함하는 LPG차량의 연료탱크용 밸브장치를 제공한다. 
     4. 발명의 중요한 용도 
     본 발명은 LPG차량에 관한 것임.
Patent KR-20010007421-A (KR)
Inventor: ONISHI RYOJI
IPC: H01J9/227
Filed: 2000-06-17
Abstract: PURPOSE: A method for manufacturing a glass substrate with a fluorescent layer used as a front panel of a color cathode ray tube and a method for manufacturing a color cathode ray tube are provided to form a fluorescent pattern with uniform thickness by restricting the nonuniformity of fluorescent particles and removing the amount of over-slurry. CONSTITUTION: A fluorescent slurry(2) of another color is applied to an inner face of a glass substrate(1) formed with a fluorescent pattern of one or more color. The fluorescent slurry(2) is diffused by rotating the glass substrate(1) according to an axis located on a center of the inner face. A draining process for discharging the over-slurry(2) from the inner face is performed by sloping the glass substrate(1) as much as the first slope angle. A spinning process for rotating the glass substrate(1) is performed by shifting the glass substrate(1) to the second slope angle.
Patent KR-20000058590-A (KR)
Inventor: CHO YONG HO
IPC: H01B3/12
Filed: 2000-06-17
Abstract: PURPOSE: A dielectric material for microwave is provided to have a dielectric constant over 40 and high quality coefficient and to control thermal coefficient of resonance frequency within a certain range. CONSTITUTION: A dielectric material is provided from the equation of (1-x-y)CaTiO3-x£0.3 (La2/3TiO3)-0.7(LaAlO3)|-y(CaNb2O7), wherein 0.3 ≤ x ≤ 0.5, 0.3 ≤ y ≤ 0.5. Combination is carried out within the composition range of the hatched region in FIG. 1. As contents of 0.3(La2/3TiO3)-0.7(LaAlO3) and CaNb2O7 increase due to increase of x and y values, the dielectric constant decreases from 45 to 40, and the quality coefficient increases from 54,324 to 55,710 and then decreases again to 53,177. The thermal coefficient of the resonance frequency changes from + to -. Dielectric properties can be controlled by changing x and y values like this.
Patent KR-20020001254-A (KR)
Title: Method of manufacturing a capacitor
Inventor: PARK JONG BEOM
IPC: H01L27/108
Filed: 2000-06-27
Abstract: PURPOSE: A method for manufacturing a capacitor is to provide an electrical characteristic which is almost the same level as a superior leakage current characteristic of the capacitor formed by using a Pt lower electrode, by previously forming a thin RuOx layer on the surface of a Ru lower electrode. CONSTITUTION: The first insulation layer(2) of which the junction part is opened by the first contact hole is formed on a semiconductor substrate(1). A contact plug is formed inside the first contact hole. A Si3N4 layer(5) and the second insulation layer(7) are sequentially formed on the resultant structure. The second contact hole is formed in the second insulation layer, and the exposed Si3N4 layer is etched to expose the contact plug. The Ru lower electrode(8) is formed on the sidewall and bottom surface of the second contact hole. The RuOx layer is formed on the Ru lower electrode. A dielectric layer(10) and an upper electrode(11) are sequentially formed on the resultant structure.
Patent KR-20010021048-A (KR)
Title: A Method of Manufacturing a Graded-Index Plastics Optical Fiber
Inventor: PERRIN BERNARD
IPC: B29C48/28
Filed: 2000-07-04
Abstract: PURPOSE: A production is provided to produce optical plastic fiber with grated index quickly and reproducibly without depending on the diffusion of compounds of adjacent layers. CONSTITUTION: In the process, the optical plastic fiber(6) with grated index which has a continuous refractive index profile is produced by using a specified polymer P and a specified compound M1. Therein, the process includes the stage of preparing two compositions(13,14) which are different in refractive index, respectively contain at least P and, further, in which one side has the compound M1 and a photo-crosslinking initiator exists in at least either one side, the stage of diffusing the two compositions(13,14) into each other and the stage of extruding the compositions(13,14) so as to obtain the fiber(6). Prior to the extrusion, active mixing of the two compositions(13,14) is performed by using a mixing means(2) and, after the extrusion of the fiber(6), hardening(7) is executed.
Patent KR-20010021054-A (KR)
Title: Supporting Structure for Piezoelectric Resonator, and Electronic Device, Ladder Filter, and Communication Apparatus
Inventor: UNAMI TOSHIHIKO
IPC: H03H9/205
Filed: 2000-07-05
Abstract: PURPOSE: To provide the supporting structure of a piezoelectric resonator of which resonance characteristics can be made satisfactory, and whose strength against to any impact can be made high. CONSTITUTION: A substrate 12 is included in a piezoelectric part 10. Pattern electrodes 14a and 14b are formed on one main face of the substrate 12. The central part of outer electrodes 32 and 34 of a piezoelectric resonator 20 is supported by a supporting member 40 at land electrodes 16a and 16b of the edge parts of the pattern electrodes 14a and 14b. The supporting member 40 includes a plurality of column-shaped members 42 made of column-shaped nickel. Packing members 44 made of epoxy resin are formed in the periphery of the column-shaped member 42.
Patent KR-20000058949-A (KR)
Inventor: KIM DO SIK
IPC: H04W4/16
Filed: 2000-07-06
Abstract: PURPOSE: An advertising method using paging time of mobile phones is provided to attract users' attentions with messages, voices, still images and moving pictures during a short time, thereby increasing advertising efficiency. CONSTITUTION: An advertising method using paging time of mobile phones comprises the steps of: making a transmitter's terminal connect to an operator system by using a mobile web browser to receive downloaded advertisements, and store the advertisements; delivering the advertisements for a regular time on a moment when a member presses a 'send' button of the terminal; counting advertisements viewing frequencies to inform the operator system of a counted result; making the member purchase an affiliated product; and supplying a benefit for purchasing the product.
Patent KR-20020004563-A (KR)
Title: Washbasin using ultrasonic waves
Inventor: BAEK JONG HU
IPC: A47K1/04
Filed: 2000-07-06
Abstract: PURPOSE: A washbowl using ultrasonic waves is provided to promote a washing effect by the cavitations of ultrasonic waves and washing and massaging effects by granulating and accelerating water. CONSTITUTION: A washbowl using ultrasonic waves comprises: a washbowl(1) having a capacity for holding wash for washing up; an ultrasonic vibrator(2) attached to the lower part of the washbowl(1) transferring mechanical oscillatory waves to water in the washbowl under the control of a power supply and an ultrasonic control unit(3) to generate air bubbles and to granulate and accelerate water; and a power supply and an ultrasonic control unit(3) supplying high-frequency electricity to the ultrasonic vibrator(2).
Patent KR-20020005104-A (KR)
Title: Speech method for discussion wire and wireless in private exchange
Inventor: BAEK JONG HYEOK
IPC: H04W84/16
Filed: 2000-07-08
Abstract: PURPOSE: An in-plant wired/wireless consent call method is provided to easily forward a call and consent only with an extension number between an extension phone user and a wireless subscriber by providing a consent function for a call in a busy state to the wireless subscriber through a private exchange rather than passing through a PSTN when the wireless subscriber is registered as an in-plant subscriber. CONSTITUTION: It is checked whether the first and second wireless subscribers are in a call communication. It is checked whether there is an input of a 'SEND' key from the first wireless subscriber. If there is an input of the 'SEND' key from the first wireless subscriber, a hold message is transferred to the second wireless subscriber to make the second wireless subscriber be in a call hold state. When the second wireless subscriber is in a hold state by the input of the 'SEND' key, the third subscriber is called and a speech path is formed for a consent call communication. After the third subscriber makes the consent call communication, when the first wireless subscriber intends to perform a call communication with the second wireless subscriber, the first wireless subscriber makes the third wireless subscriber to hear a hold sound by input of the 'SEND' key to hold it, and depresses the 'SEND' key two times to cut off the hold sound of the second wireless subscriber to resume a call communication.