baber/WOPTO huggingface dataset:
Patent KR-20000035813-A (KR)
Title: Arrangements and methods for generating a radio frequency signal
Inventor: HELLBERG LARS RICHARD BIRGER
IPC: H04L25/49
Filed: 1997-08-26
Abstract: PURPOSE: Arrangements for generating a radio frequency signal are provided to modulate and amplify power of an information signal capable of carrying out very high linearity and efficiency over a wide frequency band. CONSTITUTION: Modulation and amplification of the information signal (XIF) is carried out with very high linearity and efficiency over a wide frequency band by sigma-delta modulating (410) said information signal (XIF), whereby a digital signal (Y) is generated. The digital signal (Y) is up-mixed and voltage switched(420) by voltage-fed switches (423) controlled by the up-mixed digital signal (RF). The switches are preferably conductive elements whose electric conductivity depend on the amount of ionising radiation that falls on the elements.
Patent KR-20000048829-A (KR)
Title: Liquid alendronate formulations
Inventor: HUNKE WILLIAM H
IPC: A61K31/66
Filed: 1997-10-02
Abstract: PURPOSE: Provided are liquid pharmaceutical formulations of alendronic acid or a pharmaceutically acceptable salt thereof, and in particular, those containing a buffer which can control gastric pH. CONSTITUTION: Provided is a liquid pharmaceutical formulation comprising: alendronic acid or a pharmaceutically acceptable salt as an active ingredient; a sufficient amount of buffer such that: A) the pH of the formulation is between approximately 3.5 and approximately 7.5; and B) 15 ml of the formulation is able to raise the pH of 50 ml of 0.1 N HCl (pH approximately 1) to a pH of at least 3.0; and optionally, one or more additional agents including those selected from the group consisting of: preservatives, flavoring agents, colorants, and sweeteners. Another aspect of this invention is a pharmaceutical formulation made by mixing the aforementioned active ingredients, buffer and optional agent(s). Buffering systems include those selected from the group consisting of citrate, tartrate, fumarate, phosphate, acetate, and mixtures thereof. Typically, 0.2 to 3 g of a salt or free acid and base will be used to make a buffer salt combination (per 15 ml dose). Generally, a 15 ml dose of the formulation of this invention will contain between 0.2 to 3 g of at least one of the following: disodium phosphate, trisodium citrate dihydrate, disodium tartrate dihydrate, or di sodium formate. For example a useful buffering system is a citrate buffer comprising anhydrous citric acid and trisodium citrate dihydrate, present in a molar ratio of about 1:1-350, preferably about 1:50-150, and more preferably about 1:81.
Patent KR-20000069020-A (KR)
Title: 스티렌계 수지조성물 및 그것으로 제조된 성형체
IPC: C08K7/04
Filed: 1997-10-02
Abstract: 투명성, 성형성, 실용강도, 코스트퍼포맨스에 뛰어난 스티렌계 수지 조성물을 제공하기 위하여 스티렌계 수지 또는 스티렌 수지 100중량부에 섬유상 소재 0.001∼4중량부를 함유하는 스티렌계 수지 조성물 또는 스티렌 수지 조성물을 얻는다.
Patent KR-20000062287-A (KR)
IPC: A01N43/80
Filed: 1997-12-09
Abstract: PCT No. PCT/EP97/06854 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/27816 PCT Pub. Date Jul. 2, 1998Aminoisothiazoles of the formula I, where R is hydrogen or C1-C4 alkyl and X is halogen, NO2, CN or SCN, and metal complexes and acid addition salts thereof are used as microbicides for protecting industrial materials from being attacked and destroyed by microorganisms.
Patent KR-20000070212-A (KR)
IPC: A61K31/65
Filed: 1998-01-15
Abstract: The invention is a method of inhibiting cancer growth, by inhibiting cellular proliferation, invasiveness, or metastasis, or by inducing cytotoxicity against cancer in mammals. The method employs 6-demethyl-6-deoxy-4-de(dimethylamino)tetracycline (CMT-3) and other functionally related chemically modified, preferably non-antibacterial, tetracycline compounds to inhibit cancer growth. The method is particularly effective to inhibit the establishment, growth, and metastasis of solid tumors, such as tumors derived from colon cancer cells, breast cancer cells, melanoma cells, prostatic carcinoma cells, or lung cancer cells.
Patent KR-20010006438-A (KR)
Title: 다이아몬드 성장방법
IPC: B01J3/06
Filed: 1998-04-16
Abstract: 본 발명은 다이아몬드 결정의 공급원을 제공하는 단계, 다이아몬드 결정에 의해 정의되는 다수의 성장 중심을 제공하는 단계, 미립자 형태로 용매/촉매와 공급원 및 성장 중심 다이아몬드를 혼합하여 반응 집괴를 형성하는 단계, 결정 성장에 적합한 승온 및 승압의 조건으로 반응 집괴를 가하는 단계 및 다이아몬드 결정을 회수하는 단계를 포함하는 다이아몬드 결정의 성장방법을 제공한다.  상기 방법은 공급원 결정과 성장 중심사이의 입경 차이를 선택함으로써 일부이상에서, 및 바람직하게 우세하게 용매/촉매중에 탄소의 필요한 과포화를 수득하는 것을 특징으로 한다.  상기 방법에 의해 생성된 다이아몬드 결정 집괴는 고농도의 쌍정 다이아몬드를 갖는다.
Patent KR-20010012665-A (KR)
Title: 디지탈 자료 복사 방지를 위한 복사 방지 장치
IPC: G06T1/00
Filed: 1999-02-22
Abstract: 최근의 디지탈 비디오 복사 방지를 위한 복사 방지 장치는 "티켓"의 존재와 함께 픽셀-워터마크에 의존하여 내용의 "1회 복사" 상태를 실행한다. 이 티켓은 디스크/테이프의 소유자에게 권리를 주어 디지탈 내용의 1회 복사를 수행하도록 설계된다. 내용이 아날로그 도메인으로 변환된 후에 비디오 신호를 가진 이 티켓을 따라 움직이는 방법에 대해서 개시한다. 이러한 티켓 형태는 아날로그 티켓이라고 불린다. 이 아날로그 신호는 복사 방지 장치(예를 들면 원래의 VCR)에 따르지 않는 유산장치(legacy device) 상에 기록된다. 이 아날로그 티켓은 이들 유산장치에서 자동으로 제거되도록 설계된다. 순응 장치에 의한 다음 발생 복사는 불가능하게 된다. 이 티켓 신호를 아날로그 비디오 신호 내부에 삽입하는 3가지의 가능한 방법이 제안된다.
Patent KR-20010013540-A (KR)
IPC: C12N15/57
Filed: 1998-06-04
Abstract: A hyperthermostable protease having the amino acid sequence represented by the SEQ ID NO:1 of the Sequence Listing or a sequence derived therefrom by deletion, substitution, insertion or addition of one to several amino acid residues, a gene encoding the hyperthermostable protease, and a process for preparing the protease, aiming at providing by genetic engineering techniques a hyperthermophile protease which is advantageous for industrial use.
Patent KR-20010020508-A (KR)
Title: Method of forming automotive trim strip from extruded thermoplastic materials
IPC: B29C48/06
Filed: 1998-06-25
Abstract: A process for forming a specific length of extruded thermoplastics material trim strip for automobiles includes the step of extruding the strip directly onto an endless carrier belt moving at a speed matching the emergence speed of the extrudate. The extrudate, therefore, is less subject to stresses causing unpredictable length changes on cooling. It is therefore possible to predetermine the cooled, matured, final lengths of strip and to provide moulded end portions on-line.
Patent KR-20010073728-A (KR)
Title: Apparatus for manufacturing amorphous magnesium-based alloy
Inventor: KANG HYEONG GU
IPC: C22C45/00
Filed: 2000-01-20
Abstract: PURPOSE: A forming apparatus is provided to manufacture bulk amorphous Mg alloy even through metallic mold casting having a cooling rate of under tens of K/sec by improving manufacturing ability of amorphous alloy through induction of high-pressure casting/forming in bulking amorphous Mg alloy. CONSTITUTION: A casing(10) of sealing structure is connected to a rotary pump(15) and a diffusion pump(16) for evacuating therein, and has an exhaustion valve(17) for releasing vacuum. A graphite crucible is installed within the casing(10) together with an induction coil(14) for melting a specimen, and has a plunger(13) for pressing melted alloy(M). A Cu mold(12) is coupled to one end of the graphite crucible(11) in a communicating manner, and has cooling holes(12a) communicated with a cooling water pipe(19). The cooling holes(12) are arranged at the outside of a cavity for forming into a certain shape.
Patent KR-20000024247-A (KR)
Inventor: SUNG KWAN
IPC: H05B6/64
Filed: 2000-02-01
Abstract: PURPOSE: A device for heating super high frequency using a power control circuit is provided to linearly adjust matching power. CONSTITUTION: A device for heating super high frequency comprises: a power supply section(100) for supplying common power supply; a magnetron(500) for generating super high frequency by colliding an electron released by heating a filament; a filament transformer(300) and a high voltage transformer(400) for supplying voltage, necessary for terminals of both poles and the filament of the magnetron(500); and a stack(260) which a user can adjust the output. A device for heating super high frequency comprises a power controller(200) for separately forming the filament transformer(300) and the high voltage transformer(400) to be independently controlled, for detecting average current of both poles of the magnetron(500) by using a current sensor, for controlling the filament voltage linearly related with the size of the average current of the both poles, when the average current is out of a predetermined range, for maintaining a predetermined value of the average current, and for controlling the output of the magnetron(500) to be the matching power.
Patent KR-20000024396-A (KR)
Inventor: CHO WON SANG
IPC: F25B39/00
Filed: 2000-02-11
Abstract: PURPOSE: An evaporator for ice making is provided to improve freezing efficiency by flowing coolant in a coolant channel and to use both faces of an evaporator as two evaporators. CONSTITUTION: A two-faced evaporator for ice making is composed of front/rear plain plate parts(10,20), front/rear inner plate parts(30,40) having channels, and an ice making frame plate(90) having many partitions formed on one face of the front/rear plain plate parts. Herein, the efficiency of capacity is maximized by making ice in both sides by spraying and flowing water on the faces of the evaporator by installing the two-faced evaporator vertically.
Patent KR-20000071362-A (KR)
Inventor: LEE WOO KEY
IPC: B60T1/16
Filed: 2000-02-21
Abstract: PURPOSE: An air resistant brake system for a vehicle is provided to reduce the movement energy of a vehicle regardless of a state of weather or road surface and to be effective regardless of a road condition. CONSTITUTION: A hermetic space is formed inside a front panel(6) of a vehicle(1) so an air resistant plate(12) as to rotate and sink. A hydraulic piston, the air resistant plate rotated by the hydraulic piston and a rotary shaft are prepared in the hermetic space. The rotary shaft makes the rotation of the air resistant plate easy. In addition, the hermetic space is formed on a front part of a radiator. Thus, the movement energy of a vehicle is decreased regardless of a condition of weather or road surface.
Patent KR-20010084791-A (KR)
Title: Driving circuit for switched reluctance motor
Inventor: OH JAE YUN
IPC: H02P25/08
Filed: 2000-02-29
Abstract: PURPOSE: A driver circuit for switched reluctance motor is provided to reduce cost by eliminating an SMPS, and achieve a compact design by eliminating a free wheeling diode. CONSTITUTION: A driver circuit comprises a DC link capacitor(C) for smoothing the input power and supplying DC voltage to a motor; N-number of motor wires(La,Lb,Lc) connected in parallel to correspond to the number of phases; upper and lower switch elements(Q1a,Q1b,Q1c)(Q2a,Q2b,Q2c) connected in serial to motor wires; an auxiliary wire(L) coupled to the motor wire through a yoke; upper and lower diodes(D1,D2) connected to the auxiliary wire; a power capacitor(C1) interconnected between the auxiliary wire and the lower diode, and which charges voltage to be used as a control power for turning off operation of the switch element; a power control switch element(S) connected in parallel with the power capacitor and the lower diode(D2), and which maintains the voltage charged to the power capacitor at a constant level; a control unit(10) for controlling on/off operation of the power control switch element in accordance with the size of the voltage charged to the power capacitor; and a capacitor charged from the power capacitor through a diode so as to be used as a practical control power.
Patent KR-20010087008-A (KR)
Title: A system for substitution of domain name registration and a method thereof
Inventor: KIM HONG NYUN
IPC: G06Q50/00
Filed: 2000-03-06
Abstract: PURPOSE: A domain name registration proxy service system and a method thereof are provided so that people, who are not living in the English-speaking community, can acquire and use their native words substantially identical to previously registered English domain names in meaning as their own domain names. CONSTITUTION: A domain server(10), connected to a domestic domain registration institute server(16) and an international domain registration institute server(15), exchanges retrieval application information, retrieval confirmation information, registration application information and registration confirmation information with them. The domain server(10) is also connected with a member DB(14) and a settlement system(13). The member DB(14) stores member information. The settlement system(13) is provided to receive domain registration proxy expenses from applicants or to give commissions to domain registration institutes. A domain registration site(11) operated and managed by the domain server(10) has a search window to support native tongue domain retrieval and registration for generic people.
Patent KR-20000062912-A (KR)
IPC: G09G5/14
Filed: 2000-03-16
Abstract: 사용자가 인터렉티브하게 2차원 윈도우들을 컴퓨터 시스템의 2차원 디스플레이 스크린상에 3차원 디스플레이로 배열하는 것을 가능하게 해주는 컴퓨터 디스플레이 시스템, 방법, 및 제품이 개시된다.  디스플레이 스크린에 연관된 윈도우 메니저는 사용자가, 예를 들면, 마우스의 제3 버튼을 사용하여 윈도우의 프레임 에지를 선택하는 것에 응답하여, 윈도우를 2차원 표현으로부터 3차원 표현으로 회전시키도록 구성된다.  윈도우의 회전은 선택된 에지 프레임에 대향하는 에지 프레임을 중심으로 일어나고, 회전 각도는 사용자가 회전될 윈도우의 한 에지 프레임을 선택한 후 포인트 장치를 드레그하는 양과 관련된다.  이와 유사한 방식으로, 다수의 윈도우들은 3차원적인 뷰잉을 위해 회전되어 디스플레이 스크린 내에서 동시적으로 디스플레이될 수 있다.
Patent KR-20000036489-A (KR)
Title: Auction method using cyber money
Inventor: KIM BEOM SU
Filed: 2000-03-17
Abstract: PURPOSE: An auction method using cyber money is provided, so that many users can participate in an auction to receive benefits by using cyber money provided on an internet web site, and operate the auction with fixed money by previously appointing products to put the products at auction. CONSTITUTION: An auction method using cyber money comprises the steps of: connecting to the internet web site by using a user computer to receive the cyber money; accumulating the cyber money to participate in an auction, by using the accumulated money; clicking required products by a user to see an auction period, a remaining time, a starting price, a present price, and information on a selected product, and if the user's cyber money is bigger than the present price, pressing a bidding participation key to participate in a bidding; making a user suggesting a highest price be a successful bidder until the remaining time ends, and delivering the product to the successful bidder.
Patent KR-20010092079-A (KR)
Title: The method to modify the executable file which is stored in a storage deivce, while it is running under multi-tasking OS
Inventor: JU YEONG HEUM
IPC: G06F17/40
Filed: 2000-03-20
Abstract: PURPOSE: A method for modifying a storage by an executed program on a multi-tasking operating system environment is provided to modify an original program by a process of a copy. CONSTITUTION: A copy of an original program is created in a storage(502). The original program requests that the currently used operating system will execute the copy program after that time and is terminated(503). The copy program connects to an update server(504) and judges whether a self-update is necessary or not through a version comparing operation(505). If a self-update is not necessary, the copy program is executed normally. If a self-update is necessary, the original program is updated(507) and an execution of the original file is requested to the currently used operating system(508).
Patent KR-20000030872-A (KR)
Inventor: KANG SEOUNG IL
IPC: G06F17/00
Filed: 2000-03-23
Abstract: PURPOSE: A personal secretary system by using cyber character is provided to help an unskilled user to use the searching function easily and speedily by the cyber secretary. CONSTITUTION: Web tracking is performed by tracking internet address of sites where a user visited through web server and stores the address in a web tracking database. Required data is collected from a corresponding site of which address is stored in the web tracking database according to predetermined schedule and the collected data is stored in a collection database. After the data stored in the collection database is searched, the data is classified by key words according to a predetermined classification reference by an analysis algorithm to store the key words in a personal inference database. The key words stored in the personal inference database is searched and converted to a data representing body parts of a character as an index, so that a growth factor is obtained by a cyber character growth algorithm to be stored in a character growth database. According to the growth factor, a proper character image is searched in a character image database to obtain a new character image.
Patent KR-20010095824-A (KR)
Title: Production system for a vennea board
Inventor: YOO IN HEE
IPC: B29C65/18
Filed: 2000-04-12
Abstract: PURPOSE: A plywood manufacturing system is provided to improve endurance of plywood and working efficiency by sticking picture at a high temperature, and to lengthen a life span and reduce expenses with light plywood without moisture. CONSTITUTION: A plywood producing system is composed of an ultrasonic part(206) installed in a conveyor line to form a fine uneven portion for sticking paper on foam material; and a paper sticking part(100) having preheating units(101-104) preheating transferring foam material in the rear part of the ultrasonic part, and paper sticking roll units(106-109) sticking preheated foam material on the sheet at a high temperature. Paper supply rolls(202,203) are placed in upper and lower parts of a foam material supply roll(201). An electric supply unit(205) is connected to the ultrasonic part and the preheating rolls, and electrothermal rods are installed in the roll bodies. Second oil preheating rolls are installed in the rear ends of the preheating rolls, and connected to an oil heater/ pump(105) to circulate oil. A pressure unit is installed in the paper sticking rolls to improve foaming and stiffness in sticking the foam material to the paper. The plywood having a smooth surface is manufactured for dry mounting without spreading.
Patent KR-20000071830-A (KR)
Title: 메타크릴산 제조촉매 및 메타크릴산 제조방법
IPC: B01J27/19
Filed: 2000-04-27
Abstract: 메트아크롤레인, 이소부틸알데히드 및 이소부티르산으로 구성된 군에서선택된 일종이상의 화합물의 증기상 산화 및/또는 증기상 산화 탈수소에 의해 메타크릴산을 제조하는 데 사용되는 개선된 촉매가 제공된다. 상기 개선된 촉매는, (A) 상기 반응을 위한 촉매로서 그자체 공지된 몰리브덴과 인을 필수성분으로 함유하는 착 산화물 그리고 (B) 필수 성분으로 세륨과 지르코늄을 함유하는 착 산화물로 구성되는 조성물이다. 이렇게 개선된 촉매가 사용될 경우, 메타크릴산의 제조 조작은 장기간에 걸쳐 연속적으로 안정화될수 있다.
Patent KR-20010100527-A (KR)
Inventor: LEE BYEONG HAN
IPC: A63F13/12
Filed: 2000-05-03
Abstract: 본 발명의 공연물 제작 시뮬레이션 시스템은 참가자가 공연물 제작 시뮬레이션을 하는데 필요한 가상 화폐를 참가자별로 지급하고 관리하는 이-머니 관리서버, 참가자가 선택할 수 있는 시나리오 데이터, 감독 데이터 및 배우 데이터를 저장하는 시나리오 데이터베이스, 감독 데이터베이스 및 배우 데이터베이스, 참가자가 입력한 검색 조건에 따라 시나리오 데이터, 감독 데이터 및 배우 데이터를 검색하여 그 결과를 출력하는 캐스팅 서버, 선택된 시나리오, 감독 및 배우를 포함하는 기본 요소를 이용하여 영화를 제작하려 할 때 발생하는 변수를 저장하는 변수 데이터베이스, 기본 요소를 이용하여 영화를 제작할 때 발생하는 변수를 참가자에게 제시하여 참가자가 가상 화폐로 대처하도록 하고, 기본 요소와 변수에 대한 대처 비용을 합산하여 흥행 정도를 계산하는 변수 해결 서버 및  이-머니 관리서버, 캐스팅 서버 및 변수 해결 서버에서 출력된 각 결과를 입력받아 그 결과를 단말기를 통하여 제시하는 시뮬레이션 서버를 포함한다.
Patent KR-20000063213-A (KR)
Inventor: SUN YOUNG KYU
IPC: A23L1/09
Filed: 2000-05-16
Abstract: PURPOSE: A grain syrup composition for cooking containing herb is provided, which is nutritious and reduces consumption of sugar to improve physical health. CONSTITUTION: The grain syrup composition including herb is prepared by the steps of: (i) decocting 8 kinds of herbs such as Rubus corearnus, Lyaii fructus, jujube, ginseng, Dioscorea batatas, Astragali Radix, licorice, and Poria cocos WOLF in water for 4hours; (ii) mixing the decocted herbs with malt and fermenting for 8hours; and (iii) pressing and filtering the fermented herbs to mix with glutinous rice jelly and then decocting the mixture. The grain syrup composition also can be made by adding cinnamon, Foeniculi fructus, peppermint, ginger, banana, pineapple, or apple to herbs for better flavor and aroma and decocting the herbs.
Patent KR-20010109372-A (KR)
Inventor: CHO IN HO
Filed: 2000-05-30
Abstract: 본 발명은 반도체 공정을 이용하는 충격센서에 관한 것이다.  본 발명에 의한 반도체 충격센서는, 다결정실리콘으로 형성되는 충격센싱장치로써, 중심부분에 형성되는 중심전극과; 상기 중심전극에서 빔에 의하여 지지되고, 중심전극을 중심으로 원형으로배치되는 복수개의 이동평판; 상기 이동평판 사이에 각각 배치되는 복수개의 고정평판; 상기 이동평판은 고정평판 사이에서 떠 있는 상태로 지지되고, 충격에 의하여 상기 고정평판과 접촉시 전류가 도통하는 것에 의하여 충격을 감지하는 것을 특징으로 한다.  그리고 이러한 충격센서는 반도체 공정을 이용하여 제조되고, MEMS기술을 이용하여 소형이면서도, xy평면 상에서 어떠한 방향으로의 충격도 신뢰성을 가지고 판별하는 것이 가능한 충격센서를 제공하는 것이 가능하게 되는 잇점을 기대할 수 있게 된다
Patent KR-20010113211-A (KR)
Inventor: KO YEONG HUN
IPC: G01M17/02
Filed: 2000-06-17
Abstract: 본 발명은 타이어 공기방출시간 측정장치에 관한 것으로서, 법규시험의 타이어 공기누출에 대한 규제 시간에 기초하여 타이어 공기방출시간을 정확하게 측정할 수 있는 측정장치에 관한 것이다. 본 발명은 특수 가공휠에 장착된 타이어로부터 공기가 방출되는 4분기 호스 및  메인 호스와, 상기 메인 호스의 일단에 부착된 공기방출밸브와, 전기적 신호를 보내는 스위치로 이루어진 타이어 공기압 시험장치에 있어서, 타이어로부터 공기가 방출되는지의 여부를 체크하도록 상기 공기방출밸브에 장착된 유속 센서와; 상기 유속 센서에 연결되어 상기 타이어로부터 공기의 방출이 있을 때에 1초 간격으로 점등되도록 상기 스위치에 부착된 5개의 발광 다이오드와; 상기 5개의 발광 다이오드를 일정 시간을 두고 순차적으로 점등시키는 타이머를 포함하는 것을 특징으로 한다.
Patent KR-20020003614-A (KR)
Title: Electron gun assembly for cathode ray tube
Inventor: KOO YEONG JU
IPC: H01J29/48
Filed: 2000-06-21
Abstract: PURPOSE: An electron gun for cathode ray tube is provided to improve quality of focus of a cathode ray tube by using an electrode for controlling a vertical focusing degree. CONSTITUTION: An electron gun(6) is formed with a cathode(18) for emitting thermions, a control electrode(20) and a screen electrode(22) for focusing the emitted thermions to form electron beam, a focus electrode(24) and an anode electrode(26) for focusing and accelerating the electron beam, and a support body for aligning the cathode(18) and a multitude of electrodes. The cathode(18) emits the thermions by using a heater mounted in the cathode(18). The cathode(18) controls current density by controlling electric potential of the control electrode(20). The focus electrode(24) is formed with the first electrode having an electron beam passing hole and the second electrode having three electron beam passing holes. The third electrode is formed in an inside of the second electrode to extend a vertical focusing region of the electron beam.
Patent KR-20020006122-A (KR)
Title: Method for checking memory at a real time
Inventor: WOO JEONG HO
IPC: G06F12/00
Filed: 2000-07-11
Abstract: PURPOSE: A real time memory checking method is provided to increase system performance by removing unnecessary files from a memory. CONSTITUTION: A user sets up a wanted time for checking a memory in a pull-down menu. In the time for checking the memory, whether a clip board was previously checked is confirmed(S2). When the clip board was checked in advance, whether contents of the clip board have been changed is judged(S4). When the contents of the clip board have been changed, the routine goes back to the first step. When the contents of the clip board have not been changed, a clip board delete select message is transmitted to the user(S6). When the user intends to delete the contents of the clip board, the clip board is erased(S7). When the user does not want to delete the contents of the clip board, a re-display select message for the clip board delete select message is transmitted to the user(S8). In the case that the user does not want to see the clip board delete select message any more, the time for checking the memory is erased and the system is reset. When the user wants to display the clip board delete select message, the system is directly reset.