baber/WOPTO huggingface dataset:
Patent KR-20010077521-A (KR)
Title: Auto sizing control circuit and method for using first-in first-out of the same
Inventor: YOO CHANG HO
IPC: H04N5/44
Filed: 2000-02-03
Abstract: PURPOSE: A circuit and a method for automatically controlling frequency using a first-in first-out method are provided to decrease the chip size and a power consumption by using an automatic control circuit of the first-in first-out method, and by using one registor and an internal bus line for a measuring value of a horizontal and a vertical synchronous signal instead of a data line. CONSTITUTION: An automatic control circuit(12) includes an enable bit(16), a horizontal/vertical synchronous signal counter(18,20), a 12 bit control register(22), a measuring block(30), and an FIFO(first-in first-out) block(26). The enable bit(16) stores a set-up information according to a read and a write by receiving a control signal for the read and the write. Namely, if a CPU(4) sets up the enable bit to 1, a decoder(24) selects one among 10 measuring values according to a value of a horizontal synchronous signal counter(18), and stores the selected one at the FIFO block(26). And, measured data are transferred to the FIFO block(26) of 20 bytes, and after 20 bytes data are stored at the FIFO block(26), the FIFO block(26) outputs the measured data to a deflection circuit through an I2C bus. Namely, if a host starts to operate, the horizontal and the vertical synchronous signal are controlled automatically, and data output by the FIFO block(26) are read. For this reason, in case that a disorder screen is output, a frequency is corrected automatically.
Patent KR-20010069173-A (KR)
Title: Avian pluripotent embryonic germ cell line and process for preparing same
Inventor: HAN JAE YONG
IPC: C12N5/00
Filed: 2000-02-11
Abstract: PURPOSE: A pluripotent embryonic germ cell line is provided. And its producing method thereof is also provided. CONSTITUTION: The method for producing the pluripotent embryonic germ cell line comprises the steps of: incubating primordial germ cell(gPGC) isolated from the birds embryonic gonad in a medium containing cell growth factors and differentiation inhibition factors to obtain colonies of embryonic germ cell(EG cell); incubating the EG cell in the same medium using a feeder layer until forming colonies; and recovering the EG cell and subculturing the EG cell.
Patent KR-20000062597-A (KR)
Title: 반도체 장치의 제조 방법
IPC: H01L21/8238
Filed: 2000-02-23
Abstract: 본 발명은 반도체 기판 상에 코발트 실리사이드층이 형성되는 반도체 장치의 제조 방법을 제공한다. 
     이 방법에서, 반도체 기판을 준비하고, 대략 200℃의 온도에서 반도체 기판을 가열하면서 스퍼터링에 의해 반도체 기판 상에 코발트를 퇴적한다.  그 후, 반도체 기판을 대기에 노출시키지 않고서 300℃와 400℃ 사이의 온도에서 반도체 기판을 가열하면서 스퍼터링에 의해 반도체 기판 상에 코발트를 퇴적한다.  바람직하게는, 소정 시간동안 질소 분위기에서 500℃ 이상의 온도에서 반도체 기판을 고속 열처리한다.  또한, 반도체 기판 상의 코발트 부분 또는 코발트 산화물 부분의 적어도 일부를 습식 에칭에 의해 제거한다.
Patent KR-20010084669-A (KR)
Inventor: CHO GYEONG MI
IPC: G09G1/00
Filed: 2000-02-28
Abstract: PURPOSE: A method and a system for controlling a cathode ray tube are provided to mitigate a fatigue of an eye of a viewer and to increase a reproduction of visible at a display image. CONSTITUTION: The control system is a control system of a cathode ray tube(1) where an image is displayed by the collision of electron beam from an electron gun(15) to each pixel on a fluorescent screen(11). The system includes an image data providing part(31) and a beam shape control part(32). The image data providing part provides a reference image data to a driving circuit(2) of the cathode ray tube so that horizontal lines and vertical lines whose brightness are increased step by step are to be displayed if a beam adjustment command is inputted through a remote controller(4) from a viewer. The beam shape control part receives a minimum horizontal brightness and a minimum vertical brightness from the remote controller, and controls the ratio of a horizontal width to a vertical width to be inversely proportional to the minimum horizontal brightness and the minimum vertical brightness. The beam shape control part includes a sensitivity function set part(321) and a driving control part(322).
Patent KR-20000062675-A (KR)
Title: 직교 주파수 분할 다중 송수신 장치 및 방법과 그를이용한 통신 단말 장치 및 기지국 장치
IPC: H04J11/00
Filed: 2000-02-29
Abstract: 변조부(201)는 송신 데이터에 대해 변조 처리를 행한다.  매핑 제어부(202)는 종래의 경우 1개의 서브캐리어로 송신되었던 중요 정보를 2개의 서브캐리어로 송신하며, 또한, 2개의 서브캐리어중 1개를 종래에 사용되지 않은 각주파수 0의 캐리어 주파수 신호에 의한 서브캐리어로 하도록, 베이스밴드 신호의 서브캐리어에 대한 할당을 제어한다.  IFFT부(203)는 변조 처리 후의 송신 데이터에 대해 IFFT 처리를 행한다.  송신부(204)는 IFFT 처리 후의 송신 데이터에 대해 송신 처리를 행하여 안테나(205)로부터 송신한다.
Patent KR-20010086496-A (KR)
Title: Smart air bag system using a time division mode
Inventor: KIM HYEON TAE
IPC: B60R21/16
Filed: 2000-03-02
Abstract: PURPOSE: A smart air bag system using time sharing communication is provided to deploy an air bag promptly in a collision of a vehicle according to the presence and degree of the collision obtained by time sharing communication between an ESPS(Electronic Single Point Sensor) and plural collision sensors. CONSTITUTION: A smart air bag system using time sharing communication consists of: the n number of collision sensors(20#n) positioned on the left and the right of a vehicle to output specific collision signals; and an ESPS(10a) performing the time sharing communication by outputting a synchronizing signal for an ESPS microcomputer(13) to decide the output of the plural collision sensors through plural synchronizing signal lines connected with each collision sensor, and deciding the deployment of an air bag according to an electric current signal corresponding to each collision signal output from the collision sensors. The smart air bag system deploys the air bag promptly in a collision of a vehicle according to the presence and degree of the collision obtained by the time sharing communication between the ESPS and the n number of collision sensors. Therefore, the smart air bag system protects passengers from an accident in the collision.
Patent KR-20010086507-A (KR)
Title: Height sensor for suspension in vehicles
Inventor: KWON DAE HYEOK
IPC: G01B7/30
Filed: 2000-03-02
Abstract: PURPOSE: A height sensor for the suspension system of a vehicle is provided to continuously and rapidly sense the height of a vehicle body in a non-contact method using a hall IC(integrated circuit). CONSTITUTION: A height sensor for a suspension system comprises a sensor shaft(12) placed at a through hole(11) of a case(10), rotatively fixed to a vehicle body in one end and connected to a lever(21) interlocking with a wheel rotating shaft; a magnet(13) attached on the outer circumference of the other end of the sensor shaft; a hall IC holder(14) fixed to the inner wall of the through hole; and a hall IC(15) outputting a vehicle height signal in proportion to hall voltage generated after sensing the magnetic flux of the N pole of the magnet while fixed to the hall IC holder not to be contacted with the magnet. When the lever interlocks with the wheel rotating shaft, the sensor shaft is rotated together. Then the magnet is rotated and the magnetic flux of the N pole of the magnet is changed. After that, the hall IC generates hall voltage in proportion to the magnetic flux change and outputs the vehicle height signal in proportion to the hall voltage. When the vehicle height signal is fed to an ECU(electronic control unit), the ECU drives an actuator to adjust the height of the vehicle body.
Patent KR-20010091138-A (KR)
Title: Internet electronic commerce for total finance auction
Inventor: CHO GWANG HUN
Filed: 2000-03-13
Abstract: PURPOSE: The method for the internet EC(Electronic Commerce) of the total finance is provided for a consumer and supplier to get the largest economic benefits without spending much time and cost by integrating every service of the total finance and applying an auction and inverse-auction system to the trade. CONSTITUTION: The consumer visits a web site(www.RichbyRich.com)(S10) and takes the register and log-in procedure(S12). After that, the consumer selects one of all financial services(for example, deposit, loan, insurance, exchange, unlisted stock, bond, etc.)(S14) and inputs trade conditions to the menu of the selected service(S16). Financial institutions, like a bank or an insurance, bid for the trade and the consumer checks the bid contents(S18). When the consumer determines the financial institution that offers the best bid, the trade is successful(S20) and a program ends. If the trade is failed in the step 20, the procedure returns to the step 16, again.
Patent KR-20010092209-A (KR)
Title: Channel state management method of extend region base station
Inventor: KWON HYEON A
IPC: H04W88/14
Filed: 2000-03-21
Abstract: PURPOSE: A method for managing a channel state of a base transceiver subsystem with an expanding call zone is provided to minimize the change of a system and operate the base transceiver subsystem with the expanding call zone by combining channel states reported from a channel element in a state management block(SMB) of a BCP/CCP(BTS Control Processor/Call Control Processor), by processing the combined channel state, and by providing the processed channel states to a call processing block(CPB), a resource allocation block(RAB), a statistics processing block(SPB) and a base station manager(BSM). CONSTITUTION: A pair of basic region channel element and expanding region channel element classify self-states into an abnormal state, a loading state for performing an initialization, an idle state which waits a call allocation, and a busy state, and report the self-states to an SMB(S1). The SMB combines the reported states of the basic region channel element and the expanding region channel element(S2). The SMB reports the combined states of the basic region channel element and the expanding region channel element to the CPB, the RAB, the SPB, and the BSM(S3).
Patent KR-20010066755-A (KR)
Inventor: KIM GYEONG DAE
IPC: C23C2/08
Filed: 2000-03-27
Abstract: PURPOSE: A lead wire containing no lead component on a plating layer coated an outer circular surface of a wire is provided, which is environmentally benign and has an effect on producing a new type lead wire without changing the structure of conventional plating equipment. CONSTITUTION: This lead wire having a tin-silver-copper based plating layer(13) on an outer circular surface of a wire(3) is characterized in that the plating layer comprises 0.1 to 10% by weight of Ag, 0.1 to 5% by weight of Cu and the remainder being Sn or additionally 0.1 to 10% by weight of Bi.
Patent KR-20010094526-A (KR)
Inventor: JUN JAE DEOK
IPC: F24F11/00
Filed: 2000-03-31
Abstract: PURPOSE: A compressor control system for heavy equipment is provided to achieve an improved compressor efficiency and preclude thermal loss of the compressor by controlling operating state of the compressor in accordance with the operation mode of air conditioner installed to heavy equipment. CONSTITUTION: An air conditioner system including a compressor connected with a condenser, a dryer and an evaporator, has a temperature control mode and a ventilation and moisture removing mode. When a ventilation mode switch is turned on during operation of air conditioner, a temperature sensor senses temperature range. If the sensed temperature range is lower than level 5, compressor operation is stopped, and if the sensed temperature range is higher than temperature level 5, a duct sensor operates. If the temperature range sensed by the duct sensor is within temperature level 1 to 4, the compressor operates normally. If the temperature range sensed by the duct sensor exceed temperature level 4, the compressor stops its operation.
Patent KR-20010029616-A (KR)
Title: Cappuccino creamer with improved forming characteristics
Inventor: MCGARVEY RAYMOND MARTIN
IPC: A23L29/00
Filed: 2000-04-04
Abstract: PURPOSE: Provided is a particulate creamer which, upon reconstitution in a hot coffee beverage, provides a thick, creamy foam having a semi-solid texture similar to that of the surface foam provided by steamed milk in conventional brewed hot cappuccino beverages. CONSTITUTION: The particulate creamer comprises protein, lipid, and carrier, in which more than 50% by weight of the protein is partially denatured whey protein, the partially denatured whey protein being from 40 to 90% denatured. The creamer is particularly suitable for foaming creamer compositions. The foaming creamer composition, when added to a brewed hot coffee beverage, produces a large amount of a creamy and semi-solid foam. The creamer is preferably prepared by heat treating a slurry comprising the protein, lipid and carrier constituents of the creamer to effect denaturation of the whey protein, followed by spray drying the slurry. The creamer can also be employed in dry mix instant cappuccino compositions.
Patent KR-20000037131-A (KR)
Inventor: JUNG NAM KYOO
IPC: G06F17/40
Filed: 2000-04-08
Abstract: PURPOSE: A method is provided to guide the life facilities through the internet. CONSTITUTION: A method for guiding life facilities through the internet, comprise the steps of: compiling and storing information life facilities in a server system; storing the complied information by classifying the complied information according to a region and business category; displaying a life facilities guide window in the server system, if requesting the guide after connecting to a server system and a life facilities site, through the internet in a user system; displaying information of a large region on a screen, if selecting a requested item by viewing the guide window in the user system; displaying a small region within the large region, of which is selected; displaying names of facility responded to an item of the small region, of which is selected; and displaying a location, a phone number, and trade item information of a facility, of which is selected.
Patent KR-20010095752-A (KR)
Title: Operating equipment of fire detector.
Inventor: WOO YOUNG SUK
IPC: A62C37/00
Filed: 2000-04-11
Abstract: PURPOSE: A fire alarm operator is provided to cancel the pushed state of a push plate with elasticity of a spring by installing the spring under the push plate, to keep a circuit operated even though the pushed state is canceled, and to stop operating the circuit by power off of a return switch. CONSTITUTION: A display lamp(141), an operating lamp(142), an electronic component, a moving contact unit(171), a fixed contact unit(172) and wiring plates(190) are soldered into each fitting hole of a PCB(Printed Circuit Board,140). The PCB is installed on a fitting part(163) formed on a side of a component chamber(160) and fixed by bolts. A hanging contact terminal(180) is mounted on a nut(161) to fix the PCB and a contact terminal(181) with the bolt. When a telephone jack is inserted, the jack is contacted with a hanging contact surface. A contact surface is contacted with the contact terminal. A wire is connected to the wiring plates with a washer(192) and a connecting bolt(193). The wiring plates are exposed to outside through the fitting part(163). A duration circuit is operated by contact between the moving contact unit and the fixed contact unit by a push plate(130). The duration circuit lights on the operating lamp and forms a circuit. If external force is eliminated, the push plate is returned to the original state by elastic repulsive force of a spring(60). The circuit keeps the current state regular by the duration circuit. The circuit is released by power off through a return switch. Therefore, the circuit is controllable from a remote place.
Patent KR-20000053804-A (KR)
Title: Bidet
Inventor: KANG BONG YOON
IPC: A47K7/08
Filed: 2000-04-17
Abstract: PURPOSE: A bidet is provided to keep cleanliness of women's genitals and prevent from diseases by washing genitals without any irritation while carrying washing water warmed at proper temperature. CONSTITUTION: A bidet comprises a spraying container formed with an inner and an outer pails to have insulating space and filled with a vacuum or an insulating material. A lower surface of the outer pail has space to receive heat by exposing a lower central part of the inner pail. A pedestal includes a heater arranged in a center of a reaching groove in an upper part of the pedestal for warming up washing water to desirable temperature. A heating device includes a wall formed on a rear side of the pedestal to concord and cross a saw-teeth typed groove with the reaching groove to prevent moving of the container. A switch installed in the upper part of the pedestal of the heater supplies electric power to the heater. And an insulating cover comprises an insulating projection in the center to prevent the lower space of the container and inserted to a lower circumference of the outer pail.
Patent KR-20010097412-A (KR)
Inventor: JUENG TAI SIC
Filed: 2000-04-22
Abstract: 본 발명은 인터넷을 통한 부동산 중개 방법에 관한 것으로, 특히 공급자, 수요자 및 부동산 중개업소가 회원으로 가입하여 해당 물건에 대한 매도, 매수를 의뢰하여 작성된 정보를 DB화하여 매도 희망자의 물건에 대한 홍보를 매수 희망자에게 실시간으로 공급함으로써 실질적인 부동산 거래를 체결하도록 하는 인터넷을 통한 확장형 부동산 중개 방법에 관한 것이다.
Patent KR-20010097755-A (KR)
Inventor: KIM JAE BEOM
Filed: 2000-04-26
Abstract: 본 발명은 인터넷 서비스 방법에 관한 것으로서, 인터넷을 통해 접속하여 로그-인한 사용자를 현재의 보유자로 설정하되, 상기 보유자 설정 후 일정 시간(보유시간) 동안 타 사용자가 로그-인하지 않은 경우에는 현재의 보유자에게 경품을 제공하는 절차를 포함하도록 구성된다. 
     본 발명을 사용하면, 사용자들에게 사이트에 접속하려는 강한 유인을 주게되어 접속자 수가 비약적으로 증대될 수 있다. 이에 따라 사이트의 가치가 높아지고, 사이트 운용자의 수익이 증대될 수 있는 효과가 있다. 또한, 본 발명을 광고와 결합하면, 사용자들은 보유시간을 줄이기 위하여 광고를 계속 클릭하게 되므로 광고 효과를 높일 수 있고, 이에 따라 광고주들의 참여를 유발할 수 있어 광고 수입을 증대시킬 수 있는 효과가 있다.
Patent KR-20010087735-A (KR)
Title: Electrode forming apparatus for electric parts
Inventor: CHIBA MINORU
IPC: H01G13/00
Filed: 2000-04-26
Abstract: PURPOSE: To provide an electrode-forming apparatus for electronic components which can very readily form the electrodes of the electronic components, by carrying the plate-form electronic parts, while peeping them erect in a fixed attitude. CONSTITUTION: This electrode-forming apparatus 1 for electronic components has a tape 2, where part holes 10 for storing therein plate-form electronic parts 40 are provided at a constant space along its longitudinal direction. The tape 2 is driven in its longitudinal direction, by driving mechanisms 4a-4d to carry the electronic parts 40. The conductive pastes, to be changed into the electrodes of the electronic parts 40, are applied by paste devices 30a, 30b to the electronic components 40 which are carried while being stored in the part holes 10. Each part hole 10 has a pair of contact edges 11, 12, whereat it is contacted with both the side surfaces of each plate-form electronic component 40 and has at least one pull-in portions 13, 14 formed respectively at the contacting edges 11, 12.
Patent KR-20010105023-A (KR)
Title: 이동전화의 자동차내 사용에 대한 경고장치
Filed: 2000-05-18
Abstract: 이동전화의 자동차내 사용에 대한 경고장치이다.  자동차 내에서 사용하기에 적당한 본 발명에 부합하여 감지장치, 구동장치와 표시장치를 포함한다.  감지장치는 이동전화의 자동차내  사용을 알려주는 감지신호를 발생시키기 위해 사용된다.  구동장치는 감지신호를 받아 구동신호를 보내는데 사용된다.  표시장치는 구동신호를 받은 다음 주위의 다른 자동차들이 안전거리를 유지하도록 경고하는 경고신호를 내보내는데 사용된다.
Patent KR-20000050214-A (KR)
Inventor: KIM HWAN SIK
IPC: G06F17/30
Filed: 2000-05-26
Abstract: PURPOSE: A method for registering industrial information is provided to search the industrial information by applying a general and verified reference industrial categorization structure, and that users obtaining profits by supplying a self or company's industrial information know divisions to be positioned the self or the company's industrial information. CONSTITUTION: A method for registering industrial information comprises the steps of: making a database a general and systematical categorization structure of industrial information; making a user to register the industrial information select the categorization structure including corresponded industrial information; and registering the categorization structure selected by the user and the inputted industrial information on the database.
Patent KR-20010107474-A (KR)
Title: 계란단백질항암(계란단백질항결핵) 복합치료제 및 그 제조방법
Inventor: SO MU CHUL
IPC: A61K36/15
Filed: 2000-05-29
Abstract: 본 발명은 계란의 흰자와 노른자 및 소나무 송진을 혼합하여 가열 및 침전 정제하여 얻어진 치료제로서 결핵, 간장질환, 암, 신장염, 류마티스 관절염, 구강질환, 편도선염, 장티푸스, 급성 중이염, 우울증, 구토, 몸살 등에 치료효과를 나타내는 것으로 생물활성효과를 나타내는 복합치료제 및 그 제조방법에 관한 것이다.
Patent KR-20010109411-A (KR)
Inventor: IM YOUNG JU
Filed: 2000-05-31
Abstract: 본 발명은 인터넷 정보서비스방법에 관한 것으로, 사용자가 인터넷망을 접속하여 서버로부터 원하는 각종 서비스를 제공받는 인터넷 정보서비스방법에 있어서; 광고주로부터 입력되는 정보를 수집하여 광고DB에 저장하는 광고저장단계와; 상기 사용자가 처음 등록인가를 웹서버를 통해 분석하는 사용자분석단계와; 상기 사용자분석단계에서 처음 등록이면 입력된 개인 신상정보에 따라 상기 웹서버에서 사용자 식별자를 할당하여 사용자DB에 저장하는 사용자정보저장단계와; 상기 사용자분석단계에서 처음 등록이 아니면 사용자 식별자를 입력하여 등록된 사용자인지를 상기 사용자DB를 통해 검색하는 사용자검색단계와; 상기 사용자검색단계에서 등록된 사용자이면 사용자가 상기 서버의 사용을 요구할 때, 상기 사용자검색단계에서 검색된 사용자 정보에 따라 사용자에게 적합한 정보를 상기 광고DB를 통해 검색하는 정보검색단계와; 상기 정보검색단계에서 검색된 정보를 상기 서버에서 처리된 서비스와 함께 제공하는 정보제공단계를 포함하여, 수신대상에 따라 내용이 변경되어 사용자가 선호할 수 있는 온라인 정보를 제공해주므로 사용자는 자신에게 도움이 되는 광고서비스를 얻을 수 있으며, 광고주 입장에서는 광고주가 원하는 광고대상자에게 선택적으로 광고서비스를 제공할 수 있다
Patent KR-20010109978-A (KR)
Inventor: SONG YU JIN
Filed: 2000-06-05
Abstract: 본 발명은 인터넷 웹사이트를 통한 영화의 상품을 판매/광고하는 방법에 있어서, 이미 흥행에 성공한 영화를 선정하여 상기 영화의 국내외 판권을 구입하고 영화내용을 리버스 분석하여 영화중에서 광고 효과 혹은 판매목적의 상품을 선정하여 저장하는 단계; 상기 저장된 상품의 광고주 혹은 판매업자의 인터넷 웹사이트와 링크시켜 저장하는 단계; 상기 영화를 관람하는 사용자가 상기 영화에 나오는 상품의 어느 하나를 선택하면 상기 상품의 광고주 혹은 판매업자의 인터넷 웹사이트가 디스플레이되는 단계; 로 이루어진 인터넷 웹사이트를 통한 영화의 상품을 판매/광고하는 방법 및 그 시스템과 기록매체를 제공한다..
Patent KR-20010111237-A (KR)
Inventor: KIM MYEONG SEON
Filed: 2000-06-09
Abstract: 본 발명은 바이어스용 언더트레드 고무조성물에 관한 것으로서 보다 상세하게는 종래 언더트레드에 사용되는 고무조성물의 조성 및 사용량을 변화시킴으로써 언더트레드 고무의 모듈러스(modulus)를 증가시켜 그루브(groove)에서 발생하는 크랙(crack)을 감소시키는 바이어스용 언더트레드 고무조성물에 관한 것이다. 
     본 발명은 종래 언더트레드에 사용되는 고무조성물의 조성 및 사용량을 변화시켜 언더트레드 고무의 모듈러스를 증가시킴으로써 타이어 그루부에서 발생하는 크랙을 감소시키는 언더트레드 고무조성물을 제공하는 것을 목적으로 한다. 
     본 발명의 언더트레드 고무조성물은 원료고무인 천연고무 100중량부에 대하여 카본블랙 40∼45중량부, 아연화 4∼5중량부, 스테아린산 0.5∼1.5중량부, 프로세스 오일 0.5∼8중량부, 유황 2∼3.5중량부, 가황촉진제 0.5∼1.5중량부, 노화방지제로는 BLE-N 0.1∼3중량부, KUMANOX-13 0.1∼2.5중량부 및 KUMANOX-RD 2∼4중량부로 이루어진 것을 특징으로 한다.
Patent KR-20000054611-A (KR)
Title: Skin-core short fiber comprising chitosan and cellulose
Inventor: SON TAE WON
IPC: D01F11/02
Filed: 2000-06-14
Abstract: PURPOSE: A skin-core short fiber which presents ths same function as pure chitosan fiber although it contains substantially small amount of chitosan and which has the same physical properties as the cellulose fiber is provided. CONSTITUTION: A skin-core short finer comprising chitosan and cellulose according to the present invention comprises a core layer of cellulose fiber inside the fiber and a skin layer of chitosan outside the fiber wherein the core and skin layers are closely contacted and cellulose of the internal core layer is uniformly and entirely coated with chitosan of the external skin layer, the diameter of the short fiber is 5 micrometer to 100 micrometer, the length of the short fiber is 1 mm to 100 mm, the diameter of the cellulose core layer is 4 micrometer to 80 micrometer, the diameter of the chitosan skin layer is 0.1 micrometer to 20 micrometer, and the short fiber contains 40 wt% to 99 wt% of cellulose and 1 wt% to 60 wt% of chitosan, 0.1 wt% to 12 wt% of water and residues.