baber/WOPTO huggingface dataset:
Patent KR-20000055327-A (KR)
Inventor: KIM HYEONG TAE
IPC: H04B1/20
Filed: 1999-02-05
Abstract: PURPOSE: A communication system for transceiving wireless video signals and audio signals is provided to wirelessly monitor videos and audios of remote places from a portable central device by making the portable central device selectively control more than one remote device, through wireless data communication and analog data communication. CONSTITUTION: A communication system for transceiving wireless video/audio signals in a communication apparatus, comprises a central device(1) and many remote devices(3-1-3-n). The central device mounted on a displayer and a speaker designates the remote devices, communication frequency channels, test modes, transmission-on modes, and transmission-off modes. The central device transmits control command data to the remote devices, and receives response data from the remote devices. The central device responds to the response data to play back the video/the audio signals in the displayer and the speaker. The remote devices transmit the video/the audio signals with the designated channel frequencies. Each of the remote devices mounts a camera and a microphone thereof. Each remote device receives the control command data from the central device. A designated remote device responds with a test mode, a transmission-on mode, and a transmission-off mode, and transmits the one of the response data to the central device. Each of the remote device responds to a control command to drive the camera, the microphone, and a video transmitter in the transmission-one mode. Each of the remote devices transmits the video/the audio signals photographed in the camera and the microphone with the designated frequencies.
Patent KR-19990072538-A (KR)
Title: 다중섹터기지국아키텍쳐
IPC: H04B7/08
Filed: 1999-02-10
Abstract: 무선 통신 시스템 기지국 아키텍쳐(wireless telecommunications system base station architecture)는 라디오들과 수신 안테나들 사이에 스니퍼(sniffer) 라디오 혹은 스위칭 매트릭스를 사용하지 않고도 수신 다이버시티(diversity), 섹터화(sectorization), 라디오 풀링(pooling)을 지원하도록 개시되어 있다.  본 발명의 실시예는 제 1 입력 신호를 수신하는 제 1 수신 안테나와, 제 2 입력 신호를 수신하는 제 2 수신 안테나와, 제 1 섹터로 전송하는 제 1 전송 안테나와, 제 2 섹터로 전송하는 제 2 전송 안테나와, 제 1 출력 신호와 제 1 제어 신호를 수신하고, 제 1 제어 신호에 기초해서 제 1 전송 안테나와 제 2 전송 안테나 중의 적어도 하나에 제 1 출력 신호를 라우팅(route)하는 제 1 스위치와, 제 1 수신 안테나로부터 제 1 입력 신호를 수신하고 제 2 수신 안테나로부터 제 2 입력 신호를 수신하며, 제 1 출력 신호와 제 1 제어 신호를 제 1 스위치에 제공하는 제 1 라디오를 포함한다.
Patent KR-20000055866-A (KR)
Inventor: PARK NAM GYU
IPC: B62D15/00
Filed: 1999-02-10
Abstract: PURPOSE: A method of detecting revolution number by a steering sensor is provided to exactly detect revolution number of a handle without a standard point by forming four pinion gears on a steering gear to output signals only in multiple of 360 degree. CONSTITUTION: A method of detecting revolution number by a steering sensor contains the following steps: for adjusting gears ratio about a steering gear(10) and a first pinion gear(20)(30)(40)(50), respectively, a first step to detect revolution number through setting a first steering sensor(21) and a first hole(24) to be unified when a handle is in 0 degree; a second step to detect revolution number through setting a second steering sensor(31) and a second hole(34) to be unified when a handle is in 360 degree; a third step to detect revolution number through setting a third steering sensor (41) and a third hole (44) to be unified when a handle is in 720 degree; a fourth step to detect revolution number through setting a fourth sensor (51) and a fourth hole (54) to be unified when a handle is in 0 degree.
Patent KR-19990072978-A (KR)
Title: 차량위치정보표시장치및방법
IPC: B60K35/00
Filed: 1999-02-26
Abstract: 본 발명은, 추종차량의 위치정보를 지도정보로부터 생성한 도로형상에 중첩하여 표시하는 크루즈컨트롤장치를 제공하기 위한 것이다. 
     본 발명에 있어서는, 자기차량의 현재위치를 검출하는 현재위치검출수단과, 자기차량의 현재위치로부터 자기차량이 주행중인 도로를 선택하는 주행도로선택수단과, 타인차량의 거리 및 방향을 검출하는 타인차량검출수단과, 타인차량의 위치를 연산하는 타인차량위치연산수단과, 주행도로를 평면도 내지 조감도에 전개하여 자기차량과 타인차량의 위치정보를 중첩하여 표시하는 타인차량위치표시수단을 구비한다.
Patent KR-20000060534-A (KR)
Inventor: HWANG IN SIN
IPC: E06B3/96
Filed: 1999-03-16
Abstract: PURPOSE: A prefabricated structure for window frame is provided to prevent a twist and leakage of window frame, and make short work of manufacturing, so that the workability and productivity can be improved. CONSTITUTION: In a prefabricated structure for window frame, a couple of plate body(11,21) and a couple of partition wall are arranged at regular intervals. A couple of partition wall are inserted in between plate bodies. The joiner member(3) are formed in box section, and the length of joiner member is same with the width of the first, second window frame(1,2). On the two outside of joiners which are placed at an angle of 90 degrees, join pieces(31,32) are arranged at regular intervals in the same number with the join area(13,23). The window frame are jointed with the join pieces of joiner member to make a right angle with the join pieces, and the end part of window frames slope. The join projection(14,24) are installed in the window frames to unite a joiner member with window frames by bolt. And the bolt joint hole(33,34) are formed in the joiner member to be united with the join projection.
Patent KR-19990046529-A (KR)
Title: 원거리에서주차공간을확인할수있는장치
Filed: 1999-03-25
Abstract: 본 발명은 대형할인매장,백화점등의 주차장에 있어서 운전자가 원거리에서도 주차공간을 쉽게 찾을수 있는 장치에 대한 것이다. 
     대형주차장의 경우 주차공간이 넓기 때문에 운전자는 주차공간의 확인을 위하여 주차장을 돌면서 일일이 가까이서 확인을 하여야 만 하거나 주차관리원이 먼저 확인을 한 후 운전자에게 안내에 함으로서 주차가 가능하다. 본 발명은 이러한 불편을 없애기 위하여 1대의 차량을 세울 수 있는 주차공간 내에 차량의 존재유무를 판단할 수 있는 센서를 장치하고 이 센서에서 감지된 상태 즉, 차량의 유무에 따라 높은 위치에 장치된 램프를 켜거나 끔으로서 원거리에 있는 운전자에게 주차 공간의 위치를 시각적인 빛으로 전달한다. 즉, 운전자는 주차장의 입구에서 적색램프 혹은 청색램프의 점등 확인만으로 주차공간이 있는지 나아가 주차공간이 있는 위치까지 쉽게 알 수가 있다. 
     이러한 차량(32)의 유무를 판단하기 위하여 1대의 주차공간내의 적당한 위치에 차량을 감지할 수 있는 감지센서(12)를 장치하고 이 센서에서 일어나는 자기력선의 변화를 측정함으로서 차량(32)이 있는지를 분석하고 이에 따르는 결과로서 높은 위치에 실치되어 있는 램프(14)(15)를 켜거나 끈다. 즉, 운전자는 녹색램프가 켜진 위치를 찾으면 되는 것이다.
Patent KR-20000061435-A (KR)
Inventor: LEE YANG WON
IPC: G10B3/08
Filed: 1999-03-26
Abstract: PURPOSE: A pan pipe is provided to play ultra low-pitched sound and improve the productivity and the reliability by expanding the area of possible play. CONSTITUTION: A pan pipe(100) including a main body(10) of the pan pipe having a high-pitched pipe part(11) and a low-pitched pipe part(12) serially arranged according to the inner diameter and the length of pipe members having an opened entrance and a closed bottom for respectively having space(13) to cause resonance, a connecting frame(20) for fixedly connecting the pipe members of the main body, wherein the pan pipe includes a guide pipe(30) installed in an inner diameter part of the entrance of the low-pitched pipe part for inducing a normal resonant sound by preventing a loss of mouth wind.
Patent KR-20000061536-A (KR)
Inventor: LEE CHANG JIN
IPC: A61M5/178
Filed: 1999-03-23
Abstract: PURPOSE: An improved syringe cylinder and syringe needle are provided, to prevent a needle from being broken, to allow a needle to be inserted into and ejected from syringe cylinder easily, and to prevent a needle from being ejected from syringe cylinder in use. CONSTITUTION: The contacting face of the needle and the syringe cylinder is made of elastic rubber, the metal part of a needle is coated with vinyl and plastic containing cellulose, and the screw groove is formed in the contacting face of the needle and the syringe cylinder, to absorb the impact acting the contacting face.
Patent KR-20000061722-A (KR)
Inventor: LEE SEONG HO
IPC: C09C3/10
Filed: 1999-03-30
Abstract: PURPOSE: Complex pigments are provided which can fade the appearance of skin blemish and wrinkles, keep moisture homogeneously, and prevent ultraviolet to protect skin. CONSTITUTION: The complex pigments are produced by a process comprising the steps of: dispersing 1-20 wt% (based on dehydrated hydrophobic gel) of a collagen such as aluminium capryloyl hydrolyzed collagen, AMP-isostearoyl, benzylidenecamphor hydrolyzed collagen, etc. and 1-20 wt% (based on the dehydrated hydrophobic gel) of a moisture biopolymer such as arginine DNA, hydrolyzed honey, lysine DNA, etc. in 80-99 wt% (based on the dehydrated hydrophobic gel) of oil such as polyglyceryl-6 diolate, apricot kernel oil, etc.; drying the resultant to prepare the dehydrated hydrophobic gel; mixing the dehydrated hydrophobic gel and powdery allyl methacrylates crosspolymer; attaching ultrafine particle zinco dioxide to the surface of the powdery allyl methacrylates crosspolymer containing the dehydrated hydrophobic gel.
Patent KR-20000065494-A (KR)
Inventor: KIM SEONG HO
IPC: H01L21/31
Filed: 1999-04-06
Abstract: PURPOSE: A method for planarizing an interlayer dielectric of a semiconductor device is to provide a dense layer and a superior surface profile at a low temperature at which a characteristic of a capacitor and/or a metal oxide semiconductor (MOS) transistor is prevented from being deteriorated. CONSTITUTION: A spin-on-glass(SOG) layer is applied on a semiconductor substrate. An electron beam is irradiated to the surface of the SOG layer. A thermal process is performed regarding the SOG layer to which the electron beam is irradiated at a temperature of 550-650°C.
Patent KR-19990083616-A (KR)
Title: 별명을사용하여플렉시블하게링크하기위한방법및장치
IPC: G06F15/00
Filed: 1999-04-29
Abstract: 본 발명은 원격 배치된 자원들에 프렉시블하게 링크될 수 있는 별명 가술들을 제공한다. 별명 기술은, 원격자원의 위치가 초기에는 알려져있지 않거나 또는 브라우저 응용범위외에 있는 이벤트를 기초로하여 변화될 수 있을 때 네트워크(예컨대, 인터넷)에 위치된 원격자원에 연결되는데 적합한 브라우저에 의해 사용된다. 예컨대, 외측 이벤트들은 원격자원의 재배치, 다른장치의 사용, 원격자원에 액세스하기 위한 사용자 또는 캐리어 서비스, 또는 다른 서비스레벨의 선택을 포함할 수 있다. 하나의 실시예에 있어서, 브라우저 응용은 무선 원격 컴퓨팅장치에서 실행되며 또한 캐리어 네트워크를 통해 네트워크 게이트웨이에 연결된다. 별명 기술들은 발명 정보를 네트워크 게이트웨이로부터 브라우저 응용으로 전달하고, 브라우저응용이 별명 테이블을 형성하여 그 별명 테이블을 무선 원격 컴퓨팅장치에 저장하게 함으로써 제공된다. 무선 원격 컴퓨팅장치는, 셀룰라폰, 개인용 디지탈 보조기 및 휴대용 다목적 컴퓨터를 포함하는 무선 컴퓨팅 능력을 지니는 다양한 장치중 어느 하나로 될 수 있다.
Patent KR-20000073134-A (KR)
Inventor: HWANG KI WOONG
IPC: G09G3/296
Filed: 1999-05-06
Abstract: PURPOSE: A method for driving AC plasma display panel is provided to maximize the efficiency of AC plasma display panel with appropriate time arrangement among waveforms for voltage supply when a certain frequency is determined. CONSTITUTION: A method for driving AC plasma display panel includes making time(T1) and time(T2) difference. The AC plasma display panel has a plurality of electrodes for maintaining voltage thereof. The time(T1) is apply time of voltage pulse applied to one electrode of AC plasma display panel. The time(T2) is apply time of voltage pulse applied to another electrode of AC plasma display panel. In other word, the method of driving AC plasma display panel includes making time(T1) and time(T2) identified and making duty ratios of the both times difference.
Patent KR-20000073651-A (KR)
Inventor: LEE YONG SEUNG
IPC: H01L21/68
Filed: 1999-05-13
Abstract: PURPOSE: A labeling of a wafer carrier is provided to enable an operator to find the position of a wafer when the operator wants to look for the wafer positioned in a specific slot, by alternatively writing every slot numbers on its right and left display portions. CONSTITUTION: A wafer carrier includes display portions on both sides of an upper part in which scale and slot numbers corresponding to positions of slots are written. In one side of the display portion, odd slot numbers are written in the order of 1,3,5,7,9-m. In the other side of the display portion, even slot numbers are written in the order of 2,4,6,8-n.
Patent KR-20000073964-A (KR)
Inventor: LEE GYU HO
IPC: H04L7/00
Filed: 1999-05-17
Abstract: PURPOSE: A network synchronization device of a mobile communication exchange is provided to simultaneously supply a system clock and optical link reference clocks synchronized with the system clock, so as to easily interface the network synchronization device with an optical link interface device and to reduce system costs. CONSTITUTION: A network synchronization device(100) comprises as follows. A clock generating circuit assembly(110) generates a 32.768MHz system clock synchronized with a synchronous reference clock. A clock distributing circuit assembly(120) supplies the synchronous reference clock to the clock generating circuit assembly, and outputs a 19.44MHz optical link reference clock and an 8KHz optical link clock frame synchronous signal with the 32.768MHz system clock and an 8Khz system clock synchronous signal. Each of optical link interfacing circuit assemblies(200-0-200-15) comprises as follows. An optical signal transceiver(210) transceives an optical signal with a local optical link device(400). A synchronous transfer mode(STM) ASIC circuit(220) receives the 19.44MHz optical link reference clock to make the received reference clock a 155.520MHz optical link clock, and outputs the 155.520MHz optical link clock to the optical signal transceiver. A clock receiver(230) receives the system clock, the optical link reference clock, the system clock synchronous signal, and the optical link clock frame synchronous signal, and supplies the 19.44MHz optical link reference clock to the STM ASIC circuit. A switching device(300) performs a data transceiving process by using the system clock and the system clock synchronous signal.
Patent KR-19990068404-A (KR)
Title: 계단이나경사진곳으로짐을운반하는기계의구조와운반방법
Filed: 1999-05-17
Abstract: 본 발명은 계단이나 경사진곳으로 짐을 운반하는 기계의 구조와 운반방법에 대한것이다. 
     바퀴달린 수레에 짐을싣고 계단위에 통로를 설치하여 짐수레를 전동기를 사용한 동력으로 쉽게 이동시킨다는 원리이다.
Patent KR-19990088410-A (KR)
IPC: H01L27/105
Filed: 1999-05-19
Abstract: 액세스속도의 뱅크간 차를 발생시키지 않고, 패드 사이의 간격을 좁혀 칩 사이즈를 축소할 수 있는 반도체장치를 제공한다. 
     각각 복수의 메모리어레이 (도 1 의 101) 와, 배치의 대칭성이 요구되는 업회로, 구동회로 등으로 이루어지는 제 1 주변회로소자군 (도 1 의 102) 과, 배치의 대칭성이 요구되지 않는 입출력회로, 논리회로 등으로 이루어지는 제 2 주변회로소자군 (도 1 의 103) 과, 패드 (도 1 의 104) 를 포함하는 센터본딩구조의 반도체장치에 있어서, 복수의 제 2 주변회로소자군을 패드의 배열에 대하여 한쪽 편에 형성한다.
Patent KR-20000074840-A (KR)
Inventor: LEE JAE GYEONG
IPC: H04N7/167
Filed: 1999-05-26
Abstract: PURPOSE: An apparatus and method of restricting TV watching are provided to automatically change a destructive broadcasting channel to a predetermined channel if a user selects the destructive broadcasting channel, thereby protecting the user. CONSTITUTION: The apparatus for restricting TV watching comprises a first tuner(101) for selecting a channel by a user and then outputting a program ID(identification) and an image/sound signal of the selected channel; a second tuner(104) for outputting the program IDs of all channels except the selected channel; a first switching portion(105) for selecting one of the program IDs output from the first and second tuner; a program ID decoder(106) for decoding the program ID selected from the first switching portion; a controlling portion(108) for receiving the program ID decoded from the program ID decoder and deciding whether the selected channel is suitable for a viewer according a broadcasting grade of the channel and then controlling the first and second tuner and outputting a sound/video control data and an OSD(on-screen display) signal; a second switching portion(109) for selecting one of the video signal output from the first tuner and the OSD signal output from the controlling portion according to a control signal of the controlling portion.
Patent KR-20000075262-A (KR)
Inventor: BYUN SEUNG YEONG
IPC: G03G15/00
Filed: 1999-05-31
Abstract: PURPOSE: A method and an apparatus for measuring potentials of a photosensitive belt of an electro-photographic printer are provided to respectively sense an electrified potential, a topped potential and an exposure potential of a photosensitive belt for easily finding out abnormality of a main electrifier, a topping electrifier and a laser scanning unit. CONSTITUTION: A method for measuring potentials of a photosensitive belt of an electro-photographic printer includes the steps of determining whether a potential of the photosensitive belt electrified by a main electrifier is higher than a reference value after driving a potential sensor mounted at a lower part of the main electrifier(S30), additionally electrifying the photosensitive belt by driving a plurality of topping electrifier mounted at a lower part of the potential sensor with a predetermined interval(S40), turning off the main electrifier and an anti-electrifier after the additional electrifying(S50), and determining whether a topped potential of the photosensitive belt, which is changed by the additional electrifying, is higher than a reference value by the potential sensor(S60).
Patent KR-20000005827-A (KR)
Inventor: TAGAWA GENJI
IPC: H04N5/781
Filed: 1999-06-02
Abstract: PURPOSE: A recording medium has a recordable digital data having audio information and video information, a recording device for the recording medium and a reproducing device are provided. CONSTITUTION: In a recording medium(106) wherein a plurality of reproduction paths for determining a reproduction order of a plurality of digital data and a plurality of digital data are recorded, the plurality of reproduction paths includes a first reproduction path information and a second reproduction path. The first reproduction path determines a reproduction order of a plurality of digital data recorded in the recording medium. The second reproduction path determines a reproduction path of at least one among the plurality of digital data recorded in the recording medium.
Patent KR-20000006010-A (KR)
Inventor: KAMAGA IMASASHI
IPC: C07C271/28
Filed: 1999-06-08
Abstract: PURPOSE: A metal surface treating material is provided to form a film with an excellent adhesive property to a metal material and to add an anti-corrosive property. CONSTITUTION: A surface treating material contains at least one of poly oxyethylene alkyl phenol ether derivative as an effective ingredient. A manufacturing method for a poly oxyethylene alkyl phenol ether derivative is to react the poly oxyethylene alkyl phenol ether and an isocyan oxide phenyl compound. The poly oxyethylene alkyl phenol is a surfactant of a non-ion system and used industrially as a washing material, an emulsifier, a charging preventive, an antifoamer, and a wetting infiltrator.
Patent KR-20010003014-A (KR)
Inventor: SONG BYEONG GWON
IPC: H01J29/48
Filed: 1999-06-19
Abstract: PURPOSE: An electron gun cathode is provided to allow to operate in a low temperature and obtain the high current density by utilizing emission electrons and secondary electrons emission electrons simultaneously. CONSTITUTION: An electron gun cathode includes a cathode(32). A control electrode is opposite to the cathode. An electron emission part(40) is mounted on the plane being opposite to the cathode in a control electrode(38). The electron emission part emits electrons depending on voltage applied to the cathode and the control electrode. A coating film(34) is formed on the cathode being opposite to the electron emission part. The coating film emits the secondary electron by the collision of the electrons emitted from the electron emission part. Therefore, the electron gun cathode allows to operate in the low temperature by utilizing the electric field emission for the basic electron emission. Also, the electron gun cathode allows to get a high current density by using the emission electron and the secondary electron simultaneously.
Patent KR-20010003365-A (KR)
Inventor: LEE CHEUL JAE
IPC: E05B65/52
Filed: 1999-06-23
Abstract: PURPOSE: A locking/opening device of bag by using voice is provided to open the bag only when the voice of the bag owner is recognized. CONSTITUTION: A user records a voice data in a voice recognize unit of a bag. The voice data is compared with voice inputted through a microphone for opening the bag. By identification of voices, power is applied to a solenoid(3) for progressing an operation rod(31). Thus, a second vertical unit(42) of a hook(4) is rotated downward for being replaced from an insert groove(21) of a second store body(2). Therefore, two store bodies(1,2) are uncombined to open the bag. To lock the bag, the store bodies are attached facing each other. The second vertical unit of the hook is inserted to the insert groove of the second store body.
Patent KR-20010003844-A (KR)
Inventor: CHO SU JE
IPC: H01J1/30
Filed: 1999-06-25
Abstract: PURPOSE: A field emission display device and a fabrication method thereof are provided to simplify a process, to lower a driving voltage, and to display a large area. CONSTITUTION: A field emission display device consists of an emitter electrode layer(24), an emitter layer(30), the first and the second insulating layers(26,32), a gate electrode layer(28), a discontinuous gate layer(34). A method for fabricating the field emission display device comprises the steps of; forming the emitter electrode layer on a top face of a substrate(22); forming the emitter layer for discharging an electron on a top face of the emitter electrode layer; forming the gate electrode layer for focusing the discharged electrons; forming the first and the second insulating layers for electrically separating the emitter layer from the gate electrode; etching the gate electrode layer and the second insulating layer successively; forming the discontinuous gate layer on top faces of the gate electrode layer and the second insulating layer; etching the first insulating layer, the emitter layer, and the emitter electrode layer in a desired shape.
Patent KR-20010003933-A (KR)
Inventor: BAEK GI HO
IPC: C07C303/28
Filed: 1999-06-26
Abstract: PURPOSE: An organic compound capable of preventing reflection of a lower layer and removing standing waves by the change of thickness of ArF light and a photoresist itself in an ultrafine pattern forming process using a lithography photoresist and process for producing the same are provided which increase the yield of a product by the formation of stable ultrafine patterns of 64M, 256M, 1G, 4G and 16G DRAM. CONSTITUTION: Resin of formula 1 capable of being used as an anti-reflection organic film and containing a phenyl group having large absorptivity in its inside to be absorbed successfully in 193nm wavelength is prepared by polymerization of a p-tosyl alkylacrylate monomer, a hydroxyalkylacrylate monomer, a methylacrylate monomer, a glycidylmethacrylate monomer with an initiator in a solvent, wherein each monomer has a molar fraction ratio of 0.01 to 0.99. In formula, Ra, Rb, Rc and Rd are H or methyl, R1 is H, hydroxy, C1-C5 substituted or nonsubstituted straight or side chained alkyl, cycloalkyl or alkoxyalkyl, cycloalkoxyalkyl, w, x, y, z have each a molar fraction ratio of 0.01 to 0.99; n1, n2 and n3 are 1 to 4.
Patent KR-20010005332-A (KR)
Inventor: AHN SANG GIL
IPC: H02K33/00
Filed: 1999-06-30
Abstract: PURPOSE: A flat vibration motor is provided to maximize an eccentricity amount at a rotor by disposing a weight matter between winding coils and uniting the weight matter, the winding coils and a hard substrate by use of a resin. CONSTITUTION: A flat vibration motor comprises a rotor(100) which consists of a hard substrate(10), winding coils(20), a weight matter(30) and a forming matter(40). The winding coils(20) are spaced apart from each other and are disposed at both sides of the hard substrate(10). The weight matter(30) is disposed at a circumference part of the hard substrate(10) between the winding coils(20). The hard substrate(10), the winding coils(20) and the weight matter(30) are united by an insert injection with the forming matter(40).
Patent KR-20010009456-A (KR)
Inventor: JUNG GU MIN
IPC: A23G3/00
Filed: 1999-07-09
Abstract: PURPOSE: A manufacturing method of cookie using a yam is provided to look into features and to improve health by using yam powder, flour, sugar, shortening, baking powder, lyophilized eggs, skim milk and salt. CONSTITUTION: A yam is dried with hot-air or freeze and shifted to make powder. The yam powder and flour are mixed in a predetermined mixing rate. Sugar, skim milk, baking powder and frozen dried egg are mixed by shifting in a predetermined mixing rate and added to make a cream state. Salt water is added to the mixture and kneaded to make dough for a predetermined time. The dough is stretched by a push stick and cut in cylinder-shaped cookies to bake for a predetermined time. Flour and yam powder are mixed in a ratio of 100:5-20. Comparing to 100% of the mixture, the dough contains 30% of sugar, 1% of skim milk, 2% of baking powder, 2% of frozen dried egg, 30% of shortening and 1% of salt.