baber/WOPTO huggingface dataset:
Patent KR-20010069110-A (KR)
Title: Method for controlling heat of electronic rice-cooker
Inventor: KIM HEUNG JAE
IPC: A47J27/00
Filed: 2000-01-12
Abstract: PURPOSE: A warm keeping control method for an electric rice cooker is provided to keep the electric rice cooker warm in various low warm keeping temperatures and high warm keeping temperatures by minimizing discoloration caused by high temperature and stench caused by low temperature. CONSTITUTION: To control the warm keeping of an electric rice cooker, a controller checks if a user selects a warm and moisture keeping mode and keeps the electric rice cooker in low temperature. After a first set time, the controller keeps the electric rice cooker in high temperature until a second set time passes by. After the second set time, the controller keeps the electric rice cooker in low temperature until a third set time passes by. After the third set time, the electric rice cooker is kept in a super high temperature until a fourth set time passes by. After the fourth set time, the electric rice cooker is kept in normal temperature.
Patent KR-20010076503-A (KR)
Title: Method for manufacturing a raw material for a prototype and the raw material thereof
Inventor: HSIEH DER MING
IPC: C08J5/00
Filed: 2000-01-26
Abstract: PURPOSE: A method for manufacturing a raw material for a prototype is provided to manufacture a prototype which is easily processed, has sufficient strength and reduced weight, and is made of hollow powder and resin so that it does not absorb water, and the raw material manufactured by the method is provided. CONSTITUTION: The method for manufacturing a raw material for a prototype comprises the steps of preparing a predetermined amount of hollow powder consisting of ceramics, glass or resin and a predetermined amount of resin consisting of epoxy, polyethylene, polypropylene or polyester; mixing the resin and the hollow powder in a mixed material shape; emptying the mixed materials so as to remove gas bubbles formed between the hollow powder and the resin of the mixed material; forming the mixed materials in a predetermined shape; maintaining the predetermined shaped mixed material at a first predetermined constant temperature for a first predetermined period of time so as to cure the hollow powder and the resin and form the cured material into a crystal; additionally crystallizing the hollow powder and the resin so as to form the material to be processed, and heating the mixed material at a second predetermined temperature for a second predetermined period of time so as to integrally cure the material; removing the material; and finishing the material.
Patent KR-20000057815-A (KR)
Inventor: SINHADIPEN
IPC: H04H20/00
Filed: 2000-01-27
Abstract: PURPOSE: A method and apparatus for concealing combined error of multi program for digital audio broadcasting and other applications is provided to embody a plurality of applications such as a listening and/or a recording of a simultaneous multi program and a simultaneous transmission of an audio and a data. CONSTITUTION: A combined multi program coder(10) is composed as a PAC encoder bank(12) having the N number of PAC audio coders(ENC-1...ENC-N) and a two-dimensional multi bit allocator(14). An input audio signal(16) having an audio 1 to an audio N is provided to each PAC audio coder(ENC-1...ENC-N) in the PAC encoder bank(12). The two-dimensional multi bit allocator(14) receives a transmitted bit allocation request and responds to a real bit allocation. A device(18) indicates the bit allocation request and the real allocation.
Patent KR-20010076922-A (KR)
Title: apparatus for removing static electricity in washing machine
Inventor: SHIN SU YEON
IPC: A47L7/00
Filed: 2000-01-28
Abstract: PURPOSE: A static electricity removal device of a cleaner is provided to improve cleaning efficiency by removing static electricity making hairs and dust stick to the surface of a floor. CONSTITUTION: A static electricity removal device comprises a first electrode(102) prepared in an insulating body(101), a second electrode(103) prepared outside the insulating body to form dielectrics with the insulating body and the first electrode, and a power source(104) supplying high voltage AC power to remove static electricity through ionization of the air around the dielectrics. Upon supplying high voltage AC power, high voltage is charged in the dielectrics during a period of (+). The high voltage is discharged during a period of (-). When the high voltage is discharged, air around the dielectrics is ionized. Cations and anions neutralize the static electricity of hairs and dust. Thus, the dust and the hairs are sucked into a nozzle of a cleaner. Therefore, cleaning efficiency is improved.
Patent KR-20000058006-A (KR)
Inventor: ISOBE MASAHIRO
IPC: C08G18/48
Filed: 2000-02-10
Abstract: PURPOSE: A flexible polyurethane cold cure molded foam has a low density and has excellent durability, particularly as evaluated by hardness change ratio in a repeated compression test and by wet heat compression set. CONSTITUTION: A flexible polyurethane cold cure molded foam of high-durability has an overall density of 35 kg/m¬3 to 45 kg/m¬3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated compression test, of not more than 15%. The process for producing the flexible polyurethane cold cure molded foam obtained from a polyol and/or a polymer polyol containing dispersed polymer microparticles involves radical polymerizing a compound having an unsaturated bond in the polyol, water, a catalyst and a polyisocyanate, the polyol preferably being a polyol synthesized by the use of a catalyst containing at least one compound selected from the group consisting of a compound having a nitrogen-phosphorus double bond, cesium hydroxide and rubidium hydroxide.
Patent KR-20010081500-A (KR)
Title: Spacer structure using a cross unit and flat panel display using the same
Inventor: JUNG JAE EUN
IPC: G09F13/00
Filed: 2000-02-15
Abstract: PURPOSE: A spacer structure using a cross unit and flat panel display using the same is provided to improve the focusing effect of emitted electrons by adjusting the distance between a mesh and a substrate. CONSTITUTION: A cross unit(1) and a rib unit(2) are coupled with a supporting unit(1,2). The supporting unit(1,2) is connected to a horizontal bar(3). A spacer is made of the cross unit(1), the rib unit(2), the supporting unit(1,2), and the horizontal bar(3) are each composed of a glass or a ceramic. The spacer is formed by coupling to a mesh the supporting unit(1,2) constructed by the cross unit(1) and the rib unit(2) without using the horizontal bar(3). The supporting unit(1,2) is made of the cross unit(1) and a trapezoid unit instead of the rib unit(2). The supporting unit(1,2) formed by the cross unit(1) and the trapezoid unit is coupled with the mesh. The spacer is fixed through a frame formed on the edge of a backward substrate.
Patent KR-20010083688-A (KR)
Title: A communication method between internet telephone interface utility and internet-central office-telephone
Inventor: CHOI YUN SEOK
IPC: H04L12/66
Filed: 2000-02-18
Abstract: PURPOSE: An Internet telephone interface apparatus and a method for realizing a call among Internet, an office line and an external telephone are provided to use conveniently by performing an Internet call with the external telephone and by performing the third-number calls among Internet, the office line and the external telephone. CONSTITUTION: A telephone interface apparatus is arranged between external telephones(108,136) and personal computers(102,130), so that an Internet call is realized by using the external telephones(108,136). A receiving audio signal from the other party outputs to the receiver of the external telephones(108,136) via the telephone interface apparatus. A transmitting audio signal inputted from the transmitter of the external telephones(108,136) outputs to the micro-signal input terminal of the personal computers(102,130) via the telephone interface apparatus.
Patent KR-20010086842-A (KR)
Title: Syringe needle separator
Inventor: YOO GEUN SU
IPC: A61M5/32
Filed: 2000-03-03
Abstract: PURPOSE: An apparatus for separating a needle from a syringe is provided to dispose of waste needle of the syringe by mechanically separating a used screw type needle for syringe from the syringe without contacting the human body. CONSTITUTION: The apparatus comprises a case (10) constructing the outward form of the body; a holding means which is installed in the case for holding the mounting part of a needle for syringe, wherein the holding means consists a circular groove (50), a sliding hole (51), a pushing plate (52), a chuck member (53), an elastic spring (54), a male screw (55), an ascent and descent member (56), ring-shaped grooves (58,65) and a ball (59); a drive means for turning and taking out a needle for syringe from the coupling part of the cylinder of a syringe by rotating the holding means, wherein the drive means consists a rotation body (40), a drive motor (43) and a drive gear (44); and a collecting can (20) which is separately mounted to the case for collecting needles separated from the syringe, wherein the apparatus further comprises a switch means for controlling and operating the drive means, wherein the case (10) further comprises a manual separating part for separating an insert type needle for syringe which is coupled by inserting the needle to the cylinder of the syringe, and wherein the switch means consists a holder pipe (30), a catching disk (33), a sheet plate (34), an elastic spring (35) and a two-step contact switch (36).
Patent KR-20010087021-A (KR)
Title: Phase locked loop circuit for reducing electromagnetic interference
Inventor: KIM SANG YEONG
IPC: H03L7/08
Filed: 2000-03-06
Abstract: PURPOSE: A phase-locked loop reducing an electromagnetic interface is provided to reduce an energy level of a frequency generated in the form of an electromagnetic wave by modulating a control voltage of a loop filter controlling a voltage controlled oscillator by a sine wave generated in a voltage modulating circuit. CONSTITUTION: A phase-locked loop circuit(100) comprises a phase-locked loop circuit unit(19) and a voltage modulating circuit unit(20) connected to the phase-locked loop circuit unit(19). The phase-locked loop circuit unit(19) includes a first divider(11), a phase/frequency detector(12), a charge pump(13), a loop filter(14), a voltage controlled oscillator(15), a second divider(16), and a third divider(17). The voltage modulating circuit unit(20) includes a sine wave generator(24) and a voltage modulator(25). The sine wave generator(24) have first, second, and third sine wave generating circuit(21,22,23).
Patent KR-20010088043-A (KR)
Title: Cathode for CRT
Inventor: WON BYEONG MUK
IPC: H01J29/04
Filed: 2000-03-10
Abstract: PURPOSE: A cathode for CRT is provided to increase reactive area of free Ba for emitting thermal electron by increasing adhesive area between the thermal electron emission layer and base metal. CONSTITUTION: A cathode includes a thermal electron emission layer(110) which is formed of Ba as a main constituent, and a base metal(120) coated to the thermal electron emission layer. The surface area of the base metal is increased by stripping off atom from a surface(140) of the base metal, and the adhesive surface between the thermal electron emission layer and the base metal is increased, resulting in the increase of reactive area of free Ba for emitting thermal electron. The surface area of the base metal is increased by increasing roughness of the surface of the base metal, by stripping off atom of the reducing agent through a plasma etching process, from the base metal formed of Ni containing at least one reducing agent selected from Mg, Si or W.
Patent KR-20010093460-A (KR)
Title: Safety Strips for Escalators
Inventor: PARK JONG HO
IPC: B66B29/00
Filed: 2000-03-29
Abstract: PURPOSE: A safety strip for escalator is provided to prevent wheel of baby carriage or wheel chair from getting caught at a gap formed between the safety strip and escalator step. CONSTITUTION: An escalator comprises an escalator step for passenger transportation; side walls(13) disposed at both edges of the escalator step; and a safety strip(10) disposed along a predetermined portion of the side wall. The safety strip includes a bristle brush constituted by brush strips(11,12) extended from the side wall of the escalator. The bristle brush is arranged to be parallel with a line(N-N) perpendicular to the side wall of the escalator, or extended inward, to thereby prevent wheel of baby carriage or wheel chair from getting caught at a gap formed between the safety strip and escalator step.
Patent KR-20000071523-A (KR)
IPC: C08F210/16
Filed: 2000-03-31
Abstract: A catalyst system based on a transition metal compound with one or more donor-acceptor reversible bonds (and optionally also co-catalyst) comprises a support which is an ion-exchanging material with a layered lattice structure. Independent claims are included for: (1) use of the catalyst to polymerize the following monomers:  alpha -olefins, i-olefins, cycloolefins, alkenes and/or diolefins; and (2) the use of the polymers thus obtained in the production of molded or shaped articles of all types.
Patent KR-20010093401-A (KR)
Title: Manufacturing method for ring gear
Inventor: SA YOUNG JIN
IPC: B23F21/00
Filed: 2000-03-28
Abstract: PURPOSE: A method for manufacturing a ring gear is provided to decrease a production cost by diminishing working time while simplifying operation process and to conveniently reduce the loss of materials by decreasing the chip amount. CONSTITUTION: A ring gear producing method comprises a first stage forming plural rings opening a side by cutting a wire rod through rolling; a second stage welding the open unit of the ring; a third stage equally forming the welding unit of the ring with other sectional face by processing through a circular trimmer; a forth stage removing a scale of a surface in the ring by shot blast after heating the ring; a fifth stage sizing the ring with a specific size; a sixth stage cold plastic processing through the ring having a section of a square shape by using a press roll in a rolling mill; a seventh stage tooth bevelling on outer or inner circumference of the ring having the square shaped section; and an eighth stage heating the ring gear with high-frequency. Thereby, the ring gear producing method reduces the production cost and diminishes working time by simplifying operation process.
Patent KR-20010094067-A (KR)
Inventor: JUNG IN KUEN
IPC: A63B23/02
Filed: 2000-04-03
Abstract: PURPOSE: A waist twisting sporting goods is provided in which waist twisting exercise is forcibly applied to the lower part of the human body by reciprocating the lower body in a determined angle after fixing the upper body so that the waist twisting exercise is easily and forcibly made by mechanical forces in the state that a man is lied down. CONSTITUTION: The waist twisting sporting goods forcibly enables waist twisting exercise to be done by adhering one side of the rod to the cam(16) by rod bearings(15) each of which are coupled to both ends of a rod(13) so that rotational motion is converted into reciprocating motion by the rotation of a cam(16) of a reducing motor(8), and adhering other side of the rod(13) to the bottom of a lower body fixing plate(1) in the state that the other side of the rod(13) is spaced apart from a rotational axis(2) in a certain distance so that the lower body fixing plate(1) along with the rotational axis(2) are reciprocated in an angular motion around a housing(7) of an upper body fixing plate(3).
Patent KR-20010006969-A (KR)
Title: High-efficiency poppet and seat assembly
Inventor: FREGOSO MARIO
IPC: F16K31/122
Filed: 2000-04-07
Abstract: PURPOSE: A poppet and a seat assembly are provided to enable high efficiency actuation of the poppet vis-a-vis the seat to provide seating and unseating operation of the assembly and to prevent that unwanted fluid is hold up by cleanly sweeping the poppet and seat interface surfaces. CONSTITUTION: A poppet and seat assembly comprises a poppet having a circular imperforate head portion at one poppet end and has an opposite end adapted for connection with a poppet actuator. The poppet head includes a valve seat interface surface along an outside head surface that tapers upwardly, moving radially outwardly from the head, at an angle in the range of from 8 to 25 degrees. The poppet includes a flange that extends radially around the head and that defines a terminal outside diameter edge of the poppet. The flange includes a tongue that projects axially away from the flange. A diaphragm extends radially around the poppet head and is interposed between the poppet head and the flange to enable poppet head movement relative to the flange. The poppet head, flange and diaphragm are all part of a one-piece construction. The assembly also comprises a circular poppet seat that is positioned adjacent to and opposite from the poppet. The seat has a poppet interface surface that tapers upwardly moving radially inwardly towards a radial axis of the seat in the range of from about 2 to 30 degrees.
Patent KR-20010095711-A (KR)
Title: internet advertizing system utilizing a game screen for raising the advertizing effect and the method of the same
Inventor: BAEK IN HWAN
Filed: 2000-04-11
Abstract: PURPOSE: An Internet advertising system and a method for increasing an advertisement effect by using a game screen are provided to increase the advertisement effect by involving a gamer and a watcher in the advertisement. CONSTITUTION: A user connects to a server and the server transmits a log-in screen for requesting a member's registration(100,110). If the user finishes the member's registration, the server transmits a game start initial screen to be displayed the game screen(120,130,140). During the game is in progress, if the user plays the game within a first setting time, the game is continuously progressed, but if the user dose not play the game within the setting time, an advertisement screen is transmitted and displayed(150,160,170). If the user plays the game within a second setting time, the game is continuously progressed, but if the user dose not play the game within the setting time, the process(150,160,170) is repeated.
Patent KR-20010097056-A (KR)
Inventor: YOON JUN SAM
IPC: G06F17/00
Filed: 2000-04-19
Abstract: 본 발명은 네트워크를 이용한 사이버 캘린더 서비스 시스템 및 방법에 관한 것이다. 본 발명의 하나의 특징에 따른 네트워크를 이용한 사이버 캘린더 서비스 방법은, 네트워크 상에서 다수의 정보를 제공하는 정보 제공 업체의 서버를 통해 사용자가 상기 서버에서 제공하는 정보를 이용할 수 있도록 하는 서비스 방법으로서, 상기 사용자가 상기 네트워크 상에 표시되는 사이버 문서에서 특정 영역을 선택하면, 사이버 캘린더를 상기 사이버 문서에서 보여주고, 상기 사이버 문서에서 보여주는 상기 사이버 캘린더에 상기 사용자가 필요한 정보를 저장 가능하도록 하며, 상기 사용자가 상기 사이버 캘린더의 제1영역을 상하좌우로 이동하여 선택하면, 상기 사용자의 정보저장 성향분석에 따라 상기 사용자에게 필요한 정보를 제2영역에서 보여준다. 
     본 발명은 사용자가 네트워크 상에 존재하는 다수의 정보를 선별하여 저장, 관리할 수 있도록 하며, 사용자의 정보 사용 및 정보 저장 패턴에 따른 사용자 성향을 분석하여 사용자 성향에 부합되는 정보를 선별하여 보여줌으로써, 사용자 요구에 맞는 맞춤 정보를 제공할 수 있다.
Patent KR-20010097194-A (KR)
Inventor: CHO SEONG JIN
IPC: D06F23/04
Filed: 2000-04-20
Abstract: 본 발명은 실링장치의 구조를 개선하여, 투과 세탁시, 세탁수가 아웃터브와 터브카바 사이의 체결부로 누수되는 것을 막도록 한 것이다. 
     이를 위해, 본 발명은 본체 내에 세탁수를 수용하기 위해 고정설치되고 상부에 개방부가 형성된 원통형 아웃터브와, 상기 아웃터브의 내부에 선택적으로 회전 가능하게 설치된 인너터브와, 상기 아웃터브와 체결되어 투과 세탁시 세탁수가 상기 아웃터브의 개방부를 통해 외부로 유동되지 못하도록 유동방향을 안내하는 터브카바로 구성된다. 
     이와 함께, 상기 터브카바에 형성되어 상기 아웃터브의 상단을 감싸는 리브와, 상기 아웃터브의 상단과 상기 터브카바의 리브 사이에 구비되어 투과 세탁시 누수를 방지하는 실이 포함되어 구성된 세탁기를 제공한다.
Patent KR-20010104026-A (KR)
Inventor: CHOI JAE YUL
Filed: 2000-05-12
Abstract: 본 발명은 공기조화기에 관한 것으로서, 공기 조화기 사용 후 습기에 의해 열교환기에 발생하는 곰팡이를 제거하기 위해 캐비닛 내부에 스프레이장치를 장착하여, 공기조화기의 운전 또는 정지 전 일정시간 동안 자동으로 열교환기에 곰팡이 제거액를 뿌려주는 공기 조화기의 곰팡이 제거 장치 및 방법을 제공하는데 있다. 
     이러한 공기 조화기의 곰팡이 제거 장치는 공기조화기의 열교환기에 곰팡이 제거액을 분사하는 스프레이와, 상기 스프레이의 구동를 위해 구동력을 제공하는 구동모터와, 스프레이가 장착되었는지를 감지하는 감지스위치와, 상기 감지스위치의 감지결과가 입력되고 상기 구동모터의 구동신호를 출력하는 마이컴으로 이루어진다.
Patent KR-20000050102-A (KR)
Inventor: JO SEOK HYOUN
IPC: H04B1/38
Filed: 2000-05-16
Abstract: PURPOSE: A mobile communication terminal for characters is provided to report various receiving statuses and usage statuses of the mobile communication terminal with various voices or light through the characters, by connecting the characters such as dolls to a connector or an earphones/microphone jack of the mobile communication terminal with a wire. CONSTITUTION: A mobile communication terminal for characters connects a character(200) such as a doll with an input/output connector of the mobile communication terminal by using a communication cable. The terminal designates specific voices according to operating modes in a data input circuit of the terminal, and stores the character. If predetermined data is received to the terminal or a setup operation mode is started, the character reads a specific voice stored in a memory to output the voice, under control of the terminal. The character comprises a memory(210), a second connector(220), a second system controller(230), and outputting units(240,250). The memory stores various greetings, voices, and operating programs. The second connector receives information outputted from the mobile communication terminal. The second system controller receives the information to analyze command data, and records the command data in the memory according to the analyzed result, or reads data prestored in the memory.
Patent KR-20010105572-A (KR)
Title: Apparatus for grouting nozzle brick
Inventor: CHO SEONG U
IPC: C10B5/12
Filed: 2000-05-16
Abstract: An electooptic device such as a liquid crystal device using an ultraviolet curable sealing material and preventing an uncured portion from remaining in the sealing material. Specifically, a liquid crystal device, wherein an ultraviolet ray shielding member or membrane member such as an overcoat (14) on an opposite side substrate (3b) and a frame-shaped shielding member (8) on an element side substrate (3a) are disposed inside an outer frame of the liquid crystal device in proximity of the sealing material (2). Those parts facing the corner part (2a) of the sealing material (2) of the outer peripheral edges of the overcoat (14) and the frame-shaped shielding member (8) are formed into a curved shape or an obtuse-angled shape, such as a circular arc shape. Since the distances between the sealing material (2) and the overcoat (14) and between the sealing material (2) and the shielding member (8) are extended at the corner (A), an ultraviolet ray advancing toward the sealing material (2) is prevented from being shielded by the overcoat (14) or the shielding member (8) to thereby prevent an uncured part from occurring in the sealing material (2).
Patent KR-20010104987-A (KR)
Title: 기저귀와 생리대용 첨가제의 제조방법및 그 기저귀와 생리대
Inventor: LEE SANG SOO
Filed: 2000-05-17
Abstract: 본 발명은 기저귀와 생리대용 첨가제에 관한 것으로, 흡착, 여과등의 작용력이 있는 규조토와 약성이 있는 약쑥, 그리고 다수종의 생약재를 첨가하여 이것에서 나는 고유의 방향성이 복합되어 독특한 향기가 우수하며, 오래도록 지속되어 악취를 완화시키고, 상쾌한 기분을 갖게하며, 또한 항균력을 가진 첨가제를 첨가하여 세균발생의 위험을 줄이게 하는 것을 특징으로 하는 기저귀와 생리대용 첨가제의 제조방법및 그 기저귀와 생리대에 관한 것이다.
Patent KR-20010108637-A (KR)
Inventor: LEE WON SUN
Filed: 2000-05-30
Abstract: 본 발명은 인터넷을 기반으로하는 사이버 공간에서 광고 대행 업무를 수행하는 시스템에 관련된 것이다. 본 발명은 인터넷에 접속되고, 광고업체의 특성, 광고업체의 실적, 광고업체의 마케팅 대상분류별로 데이터 베이스가 구축되고, 상기 데이터 베이스를 기반으로하여 인터넷으로 접속된 임의의 광고주에게 적합한 광고 업체를 선정하여주는 서버 시스템을 포함하는 것을 특징으로 하는 광고 대행 시스템을 제공한다. 본 발명은 공개된 사이버 공간 상에서 공정한 가격 및 서비스 경쟁 상태에서 광고 수요자와 광고 공급자를 연결시키는 시스템을 제공한다.
Patent KR-20010114118-A (KR)
Inventor: EOM DOO SEOP
Filed: 2000-06-21
Abstract: 본 발명은 유무선 인터넷을 통한 입시, 입사 서류 자동처리 시스템에 관한 것이다. 암호화 알고리즘을 적용하여 입시 및 입사 관련 각종 증명서를 발급하는 증명서 발급기관의 증명처리 서버, 금융기관의 결제처리서버, 무선 인터넷 접속을 위한 WAP 게이트웨이를 구비한 입시 혹은 입사 처리 시스템에 있어서: 사용자가 지원하는 입시나 입사 회사나 기관에 위치하며 상기 증명처리 서버와 상기 결제 처리 서버와 연결되어, 일반 사용자가 입시 혹은 입사 지원시 요구되는 모든 서류를 유선 혹은 무선 인터넷을 통하여 원서작성/접수, 증명서 신청/발급, 과금요청/과금확인 등의 전 과정을 인터넷상에서 자동으로 원서처리를 하는 중앙처리 서버; 및 상기 중앙처리 서버와 연결되어, 입사서류 관련 상기 증명 발행 대행을 상기 중앙처리 서버로 요청하면, 입사 원서 및 증명서를 전달받는 원서처리 서버로 구성된다. 따라서, 입시나 입사 시행 기관에 지원하는 사용자가 입시 혹은 입사 지원시 요구되는 모든 서류를 유선 혹은 무선 인터넷을 통하여 온라인으로 원서 및 관련 증명서를 접수할 수 있고, 인사관련 통계 데이터를 생성하여 일괄 처리하여 입시 및 입사에 따른 사용자의 노력 및 비용을 줄일 수 있다.