baber/WOPTO huggingface dataset:
Patent KR-20030041056-A (KR)
Title: Method for transporting control information to high speed dsch in a mobile communication system
Inventor: KIM EUN JEONG
IPC: H04B7/26
Filed: 2001-11-19
Abstract: PURPOSE: A method of transmitting control information for an HS-DSCH(High Speed-Downlink Shared Channel) in a mobile communication system is provided to use a control frame added with a predefined field in order to inform a user of information on a power offset value for a shared control channel. CONSTITUTION: A wireless interface parameter update control frame configures a wireless interface update flag field directing whether or not a parameter exists, with 2 bytes, and configures a connection control frame field with 1 byte, then inserts a TPC(Transmit Power Control) power offset and a DPC(Downlink Power Control) mode. The wireless interface parameter update control frame configures the rest with 1 byte by inserting a spare bit information field, and configures an HS-SCCH(High Speed-Shared Control Channel) PO(Power Offset) field for a shared control channel with more than 7 bits of the 1 byte. The PO filed is variable. If the HS-SCCH PO field is 7 bits, the PO field is configured in a format of including 1-bit spare bits. Entire payload is configured more than 5 bytes.
Patent KR-20010110386-A (KR)
Title: 발신자를 위한 핸드폰 수신자 정보 제공 서비스 시스템
Inventor: KANG HAE UN
Filed: 2001-11-15
Abstract: 핸드폰을 사용에 있어서 수신자가 발신자에 대한 발신 정보는 알 수 있도록 '발신자 번호 서비스'가 제공되고 있다. 그렇지만 반대로 발신자가 수신자의 정보를 제공받을 수 있는 서비스는 아직 없다. 이점에 착안하여 이번 발명을 하게 되었다. 
     발신자의 경우 수신자의 정보를 필요로 하는 점은 발신자 정보에서 누가 전화를 했는지 발신 번호를 알 수 있는 것과 달리 수신자가 전화를 받지 않을 경우 전화를 받지 않는 상황이 어떠한 상황인지에 대한 정보를 필요로 하는 것이다. 
     고의적인 수신자의 핸드폰을 받지 않는 행위 등은 어쩔 수 없다 하더라도 일상생활에서 본의 아니게 수신자가 주의의 상황에 의해 받지 못하는 경우가 생길 수 있다. 
     예를 들어 학생의 경우엔 수업중이거나 회사원, 직장인의 경우 회의나 바쁜 업무로 인해 핸드폰을 받지 못하는 경우가 생긴다. 지하철을 탔거나 외부의 소음이 심한 환경에 있을 경우 외부의 소음으로 인해 전화 온 것을 감지하지 못하여 핸드폰을 받지 못하는 경우가 생긴다. 그렇지만 핸드폰을 꺼놓기엔 전화한 발신자에게 미안할 수도 있고 발신자가 수신자에게 무슨 일이 있는지 걱정을 하게 된다. 또한 중요한 사람에게 연락이 올 수도 있어서 핸드폰을 꺼놓기를 꺼린다. 위의 상황에서 전화가 온 것을 감지하고 전화를 받기 위해서 회의장 밖으로, 강의실 밖으로 나와서 받으려는 순간 받는 시간의 지연으로 걸려온 전화가 끊어지는 경우를 많이 경험했을 것이다. 
     그러나 수신자의 경우 이러한 상황에서 전화를 받지 못하면 '발신 번호 서비스'를 이용하는 고객이라면 회의나 수업, 기타 상황이 끝난 후에 발신자에게 전화를 하면 되겠지만 발신자의 경우엔 수신자가 전화를 받지 않을 경우 답답함을 느끼고, 혹시 무슨 일이 있는지에 대한 걱정을 수신자가 연락해줄 때까지 할 수 밖에 없게 된다. 
     이러한 단점을 보완하기 위해서 수신자가 전화를 받을 수 없는 상황일 경우 전화를 건 발신자에게 수신자가 위 정보를 제공할 수 있도록 하였다. 
     발신자에게 수신자의 정보를 제공하기 위하여 녹음된 음성 메시지 방법과 아이콘을 이용한 방법 두 가지 방법을 병행하여 사용한다. 
     첫 번째 방법은 녹음된 음성 메시지를 이용하는 방법으로 핸드폰에 요즈음 많은 핸드폰에 음성 녹음 기능을 채택하고 있는데, 현재 단순히 상대방의 음성을 녹음하거나 생활에서 녹음 필요시 이용하는데, 이 기능을 이용하여 자신이 음성으로 자신의 상황을 녹음하여 발신자에게 전화가 올 경우 자동으로 이 음성 메세지가 상대방에게 전송이 된다. 
     모든 걸려오는 발신자에게 공통으로 메시지를 보낼 수도 있고, 여러 음성 메시지 중에서 특정 번호에 대한 음성을 지정하여 보낼 수도 있다. 
     두 번째 방법은 아이콘을 이용하는 방법이다. 
     수신자가 핸드폰 창에 여러 아이콘 중에서 자신의 상황에 적합한 아이콘을 선택하여 설정해 놓으면 발신자가 수신자에게 전화를 걸었을 경우 신호가 가게 되면 발신자의 핸드폰 창에 수신자가 설정해 놓은 아이콘이 표시되게 된다. 따라서 수신자는 발신자가 어떠한 이유로 전화를 받을 수 없는지 대략적 정보를 알 수 있게 된다. 
     ((예) 발신자 핸드폰에 ♨ 아이콘이 표시되면 발신자가 목욕관련 일로 인한 핸드폰을 받을 수 없는 상황임을 짐작 할 수 있게 된다.)
Patent KR-20030043194-A (KR)
Title: Apparatus for removing ash of melting zinc coating snout
Inventor: CHO HYEON GI
IPC: C23C2/06
Filed: 2001-11-27
Abstract: PURPOSE: An apparatus for removing ash of hot dip galvanized snout is provided to remove ash adhered to the snout that is dipped into galvanizing bath to hot dip galvanize a strip in a hot dip galvanizing plant. CONSTITUTION: In an apparatus for removing ash adhered to the strip in the process of plating the strip as a strip passing the annealing process in an annealing furnace is passing through molten zinc via snout connected to plating pot, the apparatus comprises an expansion joint(10) assembled between the annealing furnace and the snout; a spray nozzle part(40) assembled onto one side surface of the snout to spray nitrogen gas; a blowing nozzle(41) assembled onto one side surface of a snorkel(52) assembled into the snout to blow nitrogen gas; and a moving deck(30) fixed to the annealing furnace and snout to discharge the ash accumulated on the side of outlet(52-1) of the snorkel(52) as a moving deck is being ascended according to rotation of screw jacks(11,12), wherein the moving deck part comprises guide rails(20,21), a stopper, a moving deck(30), a base(22), screw jacks(11,12), and a driving motor(13).
Patent KR-20030046821-A (KR)
Title: Heating system for enhancing initial warming performance of vehicles
Inventor: LEE JEONG HUN
IPC: B60H1/00
Filed: 2001-12-06
Abstract: PURPOSE: A heating system for improving the initial heating performance of a vehicle is provided to store and supply high-temperature coolants in a heat insulating storage to a heater core by using the coolant sending force of a water pump without a separate driving source. CONSTITUTION: A heating system for improving the initial heating performance of a vehicle comprises a first passage(12) returning coolants discharged from an engine(10) by a water pump(14) to the engine; a second passage(31) having a coolant leading passage(32) connecting the first passage with a heater core(30) and supplying coolants to the heater core and a coolant discharging passage(34) coupling the first passage with the heater core and sending coolants discharged from the heater core to the engine; a power transmitting device(50) connected with the first passage to circulate the coolants of the second passage by the inlet pressure of coolants flowing through the first passage with being coupled with the second passage by connecting passages, a coolant heat-insulating storage(40) installed to the coolant leading passage, and intermittent valves(60,62) installed to parts, which are connected with the first passage of the second passage, in order with opening and shutting passages in a set condition.
Patent KR-20030047017-A (KR)
Title: System for providing intermediation service for real estate transaction
Inventor: KWON KI HA
Filed: 2001-12-07
Abstract: PURPOSE: A system for supplying a real estate intermediating service is provided to connect a client to a suitable store by selecting the suitable store out of real estate brokerage stores based on a request and a residence of the client who wants to transact a real estate. CONSTITUTION: A user client(10) sells, rents, buys, or leases a real estate. A central intermediation system(30) supplies information of an article for sale or member stores according to local areas to the user client(10). The central intermediation system(30) links the user client(10) with a member store through the Internet or a wire/wireless communication network(20). A local intermediation system(40) manages a member store based on a control of the central intermediation system(30). A member store system(50) joins to the central intermediation system(30), supplies information with respect to an article for sale of a corresponding area, and supplies a real estate intermediation service for the user client(10).
Patent KR-20030050262-A (KR)
Title: a method for exhaust brake controlling of diesel engine
Inventor: HYUN CHUNG HEON
IPC: F02D9/06
Filed: 2001-12-18
Abstract: PURPOSE: A method for controlling the exhaust brake of a diesel engine is provided to improve the cold startability, to reduce the generation of smoke, to shorten the warming up time, and to decrease the capacity of an air heater by preventing engine stall due to the lack of air and loss of pressure. CONSTITUTION: An engine control unit detects the engine rpm, vehicle speed, cooling water temperature, clutch switch state, air heater switch state, and idle switch state(S100). All variables are initialized with response to the application of power to a vehicle. If a first condition for controlling an exhaust brake is satisfied, an air heater switch turn off control signal is outputted(S150). An engine idle condition maintaining control signal is outputted(S160), and an exhaust brake operating control signal is outputted(S170).
Patent KR-20030047637-A (KR)
Inventor: JUNG SUN TAEK
IPC: A23L11/20
Filed: 2001-12-11
Abstract: PURPOSE: Provided is a preparation method of instant jeupjang which maintains its characteristic taste and flavor and is capable of being used as a substitution for side dishes. CONSTITUTION: A preparation of instant jeupjang is characterized by comprising the steps of: salting pepper leaves, pepper, radish and radish leaves in 20% salt water; washing them with water and freeze-drying them to obtain powdery vegetables; preparing jeupjang meju and followed by fermentation for 20 days to give jeupjang; freeze-drying the jeupjang to obtain powdery jeupjang; and packing it into PE packing material.
Patent KR-20030050954-A (KR)
Inventor: CHOI JAE SEONG
IPC: H01L21/768
Filed: 2001-12-20
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to improve uniformity of critical dimension of a trench photo process by making a bottom anti-reflective coating(BARC) filling through a BARC chemical mechanical polishing(CMP) process when a trench process is performed on a substrate in which a via hole is patterned. CONSTITUTION: The substrate(10) is prepared in which a plurality of via holes(20) are patterned. The BARC(30a) is formed on the substrate by such a thickness to fill the plurality of via holes. A part of the BARC is eliminated and planarized through a CMP process. The molecular weight of the BARC is from 1000 to 100000.
Patent KR-20030052584-A (KR)
Title: Mobile communication terminal capable of rejecting a receiving call and method thereof, and mobile communication system for providing a receiving call rejecting service and method thereof
Inventor: CHO GWON DO
IPC: H04B1/40
Filed: 2001-12-21
Abstract: PURPOSE: A receiving restriction method is provided to simply request/cancel a receiving restriction service to a mobile communication system by operating a keypad in a mobile communication terminal, thereby freely using additional functions while power of the terminal is not cut off. CONSTITUTION: A user inputs a desirous state variable value(S100). A controller of a mobile communication terminal(200) reads a state variable value stored in a memory(S110), and compares the state variable value with the inputted state variable value(S120). If the two variable values are different, the controller changes the inputted state variable value to a new state variable value, and stores the changed value(S130). The controller transmits a state information reporting message including the new variable value to a mobile communication system(100)(S140). A base station of the mobile communication system(100) receives a wireless signal, and transmits the signal to an exchange(S200). The exchange reads the state variable value included in the reporting message, and stores the value in a memory(S210).
Patent KR-20030057953-A (KR)
Title: Furnace for semiconductor fabricating having a fixed thermocouple
Inventor: AHN JAE HYEON
IPC: H01L21/22
Filed: 2001-12-29
Abstract: PURPOSE: A diffusion furnace for semiconductor fabrication including a thermocouple is provided to prevent damages of a spike thermocouple and a profile thermocouple by forming a fixing type spike thermocouple and profile thermocouple by means of a heater portion. CONSTITUTION: A diffusion furnace for semiconductor fabrication includes a tube(110) and a heater portion(100). The tube is installed at the inside of the diffusion furnace. The tube is surrounded by the heater portion. A profile thermocouple(130) is installed at the heater portion. The tube has a vertical structure. The thermocouple includes a spike thermocouple(120) and the profile thermocouple. The spike thermocouple is installed at an outer wall of the heater portion. The profile thermocouple is installed at an inner wall of the heater portion.
Patent KR-20010074725-A (KR)
Title: 냉동장치
IPC: F25B5/02
Filed: 1999-11-30
Abstract: 제 1 압축기(21)와 실외 열 교환기(23)를 갖는 제 1 냉매통로(20)와, 제 2 압축기(31)와 축열용 열 교환기(32)를 갖는 제 2 냉매통로(30)와, 실내 팽창밸브(E4)와 실내 열 교환기(42)를 갖는 제 3 냉매통로(40)를 접속한 냉동회로(1R)를 구비한다.  축열용 열 교환기(32)는 복수의 패스를 구비한다.  제 1 압축기(21)로부터 토출된 냉매는 실외 열 교환기(23)에서 응축시킨 후에 복수로 분류한다.  한편 제 2 압축기(31)로부터 토출된 냉매도 복수로 분류한다. 양 냉매를 분류별로 합류시켜 축열용 열 교환기(32)의 각 패스로 보낸다.  그 후 냉매는 축열용 열 교환기(32)에서 응축된 후 실내 팽창밸브(E4)로 감압되고, 실내 열 교환기(42)에서 증발하여 제 1 압축기(21) 및 제 2 압축기(31)로 돌아온다.
Patent KR-20010086357-A (KR)
IPC: C12N7/00
Filed: 1999-09-14
Abstract: 큰 외부 DNA 조각의 삽입을 허용하는 바이러스 게놈의 우측단에 결실을 갖는 재조합 CELO 바이러스 또는 CELO  바이러스 DNA.  바이러스는 동물, 특히 새에 대한 백신으로서, 및 인간에서 유전자 치료 및 백신 적용에 유용하다.  바이러스는 또한 재조합 단백질 생산에 사용될 수 있다.
Patent KR-20010087357-A (KR)
Title: Portable information terminal, method of processing audio data, recording medium, and program
IPC: H03M7/30
Filed: 2000-07-10
Abstract: An expansion processor has a buffer defining unit for defining one of two buffers as a present inverse quantization buffer and defining one of two buffers as a present restoration buffer, an inverse quantization processor for inversely quantizing a quantized value read for each sample from a DCT data buffer, an IDCT processor for effecting an IDCT process on the inversely quantized data to restore time-domain audio data from frequency-domain data, a low-pass filter processor for removing a high-frequency component from the restored audio data, and an audio data output unit for outputting successive restored samples of audio data to a DAC to output sound from a speaker.
Patent KR-20010079826-A (KR)
Title: Curable epoxy resin composition
IPC: C08G59/68
Filed: 1999-10-11
Abstract: Curable epoxy resin compositions, which are obtainable by heating a composition containing at least one epoxy compound, which contains on average at least one, preferably more than one, 1,2-epoxy group and optionally also one or several hydroxyl groups in the molecule, in the presence of at least one Lewis acid as catalyst, wherein the Lewis acid is a salt of trifluoromethanesulfonic acid or of perchloric acid, the counterion of which carries a 2- to 6-fold positive charge, until the epoxy value, measured in equivalent epoxy/kg (Eq/kg) of the starting material, has been reduced by 1 to 60 percent, preferably by 5 to 50 percent; a process for their preparation, and their use for the preparation of fully cured moulded compositions or coatings. Claimed are, inter alia, also high molecular weight epoxy compounds of formula (IIa)wherein A is a divalent aliphatic or aromatic radical, B is the radical of the dioxan, which is substituted either in 2- and 5-position or in 2- and 6-position and which may be in the cis- or trans-form, and n is an integer from 1 to 10, preferably from 1 to 5.
Patent KR-20010080926-A (KR)
IPC: C07D471/04
Filed: 1999-11-15
Abstract: 본 발명은 하기 구조식 (I)의 8-시아노-1-사이클로프로필-7-(1S,6S-2,8-디아자비사이클로[4.3.0]노난-8-일)-6-플루오로-1,4-디하이드로-4-옥소-3-퀴놀린카복실산의 한정된 결정 개질체, 그의 제조방법 및 약제학적 제제에 있어서의 그의 용도에 관한 것이다: 
     
       
     
     본 발명에 따른 결정 개질체는 그의 특성 X-선 분말 디프랙토그램 및 시차 서머다이아그램(명세서 참조)에 의해 구조식 (I)의 8-시아노-1-사이클로프로필-7-(1S,6S-2,8-디아자비사이클로[4.3.0]노난-8-일)-6-플루오로-1,4-디하이드로-4-옥소-3-퀴놀린카복실산의 다른 결정 개질체와 구별될 수 있다.
Patent KR-20010080580-A (KR)
IPC: H01L39/22
Filed: 1999-11-24
Abstract: 본 발명은 소스 전극(1)과, 드레인 전극(2)과, 터널 장벽을 통해 소스 전극(1) 및 드레인 전극(2)이 접속되어 이중 장벽 양자 우물을 형성하는 베이스 전극(3)과, 소스-드레인 전류(I SD )를 제어하는 제 1 및 제 2 초전도 게이트 전극(5,6)을 포함하는 간섭계 장치(10)에 관한 것이다. 베이스 전극(3)은  양자 우물 구조내에서의 속박 상태가 소스-드레인 전자의 에너지와 일치하고 있을 때, 상기 소스-드레인 전자의 공진 터널링을 가능하게 하는 강자성 물질을 포함한다. 본 발명은 또한 이러한 간섭계 장치를 포함하는 논리 소자와, 간섭계의 컨덕턴스를 제어하는 방법에 관한 것이다.
Patent KR-20020086215-A (KR)
Title: Mixed time and frequency domains equalization algorithm for adsl systems
Inventor: WANG BOR-MIN
IPC: H04L12/20
Filed: 2002-01-15
Abstract: PURPOSE: A mixed time domain and frequency domain equalization algorithm for an ADSL(Asymmetric Digital Subscriber Line) system is provided to train a TEQ(Time-domain Equalizer) having at least one coefficient. CONSTITUTION: A channel is estimated, and at least one coefficient of a time-domain equalizer(18) is initialized. At least one coefficient of the time-domain equalizer(18) is updated with the estimated channel. The updated channel is retained. The updated value of at least one coefficient of the time-domain equalizer(18) is fixed for at least one-symbol duration. A modulated symbol is calculated on the basis of an output of the time-domain equalizer(18). The second value for the estimated channel is calculated on the basis of the modulated symbol. The estimated channel is set up to the second value. The time-domain equalizer(18) is repeatedly updated while setting the estimated channel to the second value until a predetermined condition has been met.
Patent KR-20030067770-A (KR)
Title: High-Tc Superconducting Fault Current Limiter of DC-Reactor Type By the Flux-Lock Model
Inventor: HAN BYUNG SUNG
IPC: H02H3/08
Filed: 2002-01-17
Abstract: PURPOSE: A DC-reactor type HTSC(High Temperature Super-Conducting) current limiter using a flux-lock model is provided to control the amount of fault current by using a flux-lock model instead of a superconducting coil. CONSTITUTION: A DC-reactor type HTSC current limiter includes a phase control bridge, the first wire, the second wire, a superconducting element, the third wire, a phase control capacitor, a serial resistance, a magnetic field coil, and a cooling unit. The phase control bridge is formed with a plurality of thyristors(T1,T2) and a plurality of diodes(D1,D2). The first wire is wound around a steel core and connected to an output terminal of the phase control bridge. The second wire is wound around a steel core. The second wire is connected in parallel to the first wire. The superconducting element is serially connected to the second wire. The third wire is wound around the steel core. The phase control capacitor is serially connected to the third wire. The serial resistance is inserted into the third wire. The magnetic field coil is serially connected to the third wire. The cooling unit is used for cooling the superconducting element including the magnetic field coil.
Patent KR-20030068249-A (KR)
Title: Optical recording media recorded wobble address data, and wobble address data encoding/decoding method and apparatus of the media
Inventor: JU WON BAE
IPC: G11B7/007
Filed: 2002-02-14
Abstract: PURPOSE: An optical recording medium where a wobble address is recorded, and a method and an apparatus for encoding and decoding wobble address data of the same are provided to prevent an error due to data missing in playing the optical recording medium by inserting nibble number information into data start reference units. CONSTITUTION: Twenty-four NWL(Nominal Wobble Length)s belonging to 25th to 48th NWLs of each data start reference unit are selected and divided into four groups. A wobble shape of the NWL included in each NWL group is identically expressed. By combining wobble shape patterns of the NWL group, fifteen information are expressed. The data start reference unit includes nibble number information which is data group order information.
Patent KR-20020071725-A (KR)
Inventor: HINO YOSHINORI
IPC: H01L27/088
Filed: 2002-02-20
Abstract: PURPOSE: To allow a semiconductor device for turning a driver into a single chip. CONSTITUTION: The semiconductor device is applied to a drive for driving a screen display in which an anode driver, cathode driver, memory part, etc., are formed into a single chip. For example, with the anode drivers being sorted into desired output bit groups (anode drivers 10, 12, 13, and 16), the output bit groups are arranged at a peripheral part in the chip and a wiring 19, connected to the output bits in the output bit groups arranged at the peripheral part, is circulated in matching with a chip shape.
Patent KR-20030069594-A (KR)
Title: Cooling unit for computer central processing unit and method for manufacturing thereof
Inventor: JANG SEOK WON
IPC: G06F1/20
Filed: 2002-02-22
Abstract: PURPOSE: A cooling device for a computer CPU and a manufacturing method thereof are provided to prevent a heat from being lost through a connection unit of a heat pipe and a radiation fin, and reduce a temperature deviation in the cooling device. CONSTITUTION: A lower block(10) is manufactured using a die casting for forming a fluid filling unit(11) having an opening at one side. An upper block(20) having a heat pipe unit(21), which is formed to the fluid filling unit(11), is manufactured using a die casting for forming radiation fins(22) at the exterior. Interiors of the fluid filling unit(11) and the heat pipe unit(21) form a vacuum by heating the lower block(10) and the upper block(20). The fluid filling unit(11) of the lower block(10) is filled with operation fluid. The lower block(10) and the upper block(20) are combined therewith.
Patent KR-20030070648-A (KR)
Title: system for harmful cite connection interception service using tunneling protocol and service method thereof
Inventor: KIM SEONG GUK
IPC: G06F15/00
Filed: 2002-02-26
Abstract: PURPOSE: A harmful site blocking service system and method is provided to offer a harmful site blocking service to an authorized member by using a tunneling protocol. CONSTITUTION: The system comprises network access servers(300a, 300b), certification servers(400a, 400b), layer 2 tunneling protocol network servers(500a, 500b), and a blocking system(600). The network access servers(300a, 300b) check IDs of users, classify them into member IDs and non-member IDs and perform proper routing functions. The certification servers(400a, 400b) perform an authorization function for the non-member IDs. The layer 2 tunneling protocol network servers(500a, 500b) perform a routing function of an Internet traffic. The blocking system(600) blocks the access to a harmful web site.
Patent KR-20030070505-A (KR)
Title: The Method of making the com trance-amine extracts from the herb drugs
Inventor: LIM YONG NAM
IPC: A61K31/13
Filed: 2002-02-23
Abstract: PURPOSE: A process of preparing a pharmacologically effective composition of herbs by mixing pasoraliae semen and human placenta and then adding an adjuvant thereto is provided. Therefore, the composition has an energy-generating and tonic action and is effective in improving human health. CONSTITUTION: Pasoralia coryliforia L. is treated with saline water, dried and then ground to about 200 meshes. The obtained powder is blended with human placenta powder in a ratio of 1:5, added with a suitable amount of a photostabilizer and 5% trans-loid and then ground. Thereafter, the power is kneaded with honey to make a pill, or extracted in a mixed solution of 70% ethanol and purified water in a ratio of 1:1 to produce a transamine extract, which is added with honey and starch to make an extract granule or formulated into a tablet or a capsule.
Patent KR-20030073294-A (KR)
Inventor: CHO SEONG HO
IPC: F25D11/00
Filed: 2002-03-09
Abstract: PURPOSE: An apparatus and a method for information acquisition in a refrigerator are provided to allow easy information acquisition in the refrigerator without opening and closing a door. CONSTITUTION: An apparatus includes a refrigerator(10) having a plurality of receiving parts(11) comprising a shelf part formed on a body of the refrigerator and a rack part formed on a door of the refrigerator; a camera(20) installed in each of the receiving parts in the refrigerator; an image display unit(30) installed on an outside of the refrigerator to display an image taken by the camera; and an operating unit(40) allowing a user to select the image of the specific receiving part in the refrigerator to be expanded and displayed. The operating unit is a touch screen installed on a front side of the image display unit or an operating button installed around the image display unit. The image display unit is an LCD(Liquid Crystal Display). Unnecessary opening and closing of the door of the refrigerator is prevented thereby to prevent outflow of chilled air in the refrigerator.