baber/WOPTO huggingface dataset:
Patent KR-20080018053-A (KR)
Title: Antibacterial and antifungal socks and preparation thereof
Inventor: LEE JEONG HUN
IPC: A41B11/00
Filed: 2006-08-23
Abstract: A method of manufacturing antibacterial and antifungal socks by knitting raw yarns containing silver nanoparticles is provided to obtain socks with excellent antibacterial and antifungal properties as well as washing durability and antimicrobial substantivity without reducing physical properties and feeling of socks. Antibacterial and antifungal socks are made by knitting raw yarns containing silver nanoparticles with an average particle size of 2 to 50nm and another yarn. The raw yarns are obtained by spraying preheated polymer beads for making raw yarns with a nanoparticle colloidal solution of water or an organic solvent, rotating the mixture at the preheated temperature for 5min to 1hr to remove water and organic solvent and spinning the mixture. The polymer of the raw yarn is selected from polyethylene terephthalate, polyethylene-based, polystyrene-based and polypropylene-based polymers.
Patent KR-20060099495-A (KR)
Inventor: KIM MYEONG O
IPC: B01D35/00
Filed: 2006-08-24
Abstract: 본 발명은 5단계정수방식을 활용한 정수기 필터에 관한 것이다. 
     세라믹 볼은 내구성이 우수할 뿐만 아니라, 살균력과 유해물질의 분해 능력을 탁월한 물질이다. 기능성 세라믹 볼은 pH를 상승시키고 미네랄을 용출하는 세라믹과 기능성 유리구슬, 두 가지로 구분할 수 있다. 
     첫째, pH를 상승시키고 미네랄을 용출하는 세라믹 필터는 점토(Al2O3·2SiO2·H2O)에 산화칼슘(CaO), 산화칼륨(K2O), 산화나트륨(NaO), 산화마그네슘(MgO), 탄소분말(C), 광물입자를 포함하는 세라믹조성물 및 이를 이용한 세라믹에 관한 것이다. 본 발명은 세라믹 정수기의 필터로 대체가능하며 수족관, 양어장 및 양식장의 수질개선용으로 사용 할 수 있으며 식품가공업, 식음료 업체 등 각종 세라믹 제품에 사용이 가능하다. 
     "pH를 상승시키고 미네랄을 용출하는 세라믹 볼"은 물을 알칼리화시키고 물 분자의 산화 / 환원 능력을 증가시고 미네랄을 물속으로 용출시킴으로서 동식물의 주요성분인 물 분자의 침투력을 향상시킴으로서 소화촉진 및 각종 성인병으로부터 자연치유능력을 갖도록 하는 특성을 나타낸다. 
     둘째, 기능성 유리구슬은, 규석(SiO2), 산화알루미나(Al2O3), 산화칼슘(CaO), 산화칼륨(K2O), 산화나트륨(NaO), 산화마그네슘(MgO), 산화제1철(Fe2O3), 티타늄(TiO2), 바륨(Ba), 아연(ZnO), 은(Ag)을 주원료로 하고 이에 악티늄족 계열(악티늄족 원소 : 원자기호 89 - 103까지의 원소)을 첨가하여 만들어진 유리구슬에  관한 것이다. 본 발명의 유리 볼은 정수기의 기능화 즉 하우징 내부의 단계별로 쌓은 하나의 필터로 대체 가능하며, 수족관, 양어장 및 양식장의 수질개선용으로 사용되며, 식품가공업, 식료업체 및 각종기능성 제품에 사용이 가능하다. 
     기능성 유리구슬은 세라믹 볼의 일종으로 물속에서 원적외선과 음이온을 방출하면서 불필요한 분진은 용출하지 않는 장점을 갖고 있다. 
     기능성 세라믹 Ball은 원적외선 방사율과 무기미네랄이 풍부하며, 물을 알칼리화 시키고 물 분자의 산화/환원 능력을 증가시킴으로써 분자간의 연결고리를 짧게 끊어 이온수로 변화시켜 동식물의 주요성분인 물 분자의 침투력을 향상시킴으로써 소화촉진 및 각종 성인병으로부터 자연치유능력을 갖도록 함은 물론 탈취작용, 물의 이온화, 무기미네랄 용출, 용존산소(DO)의 증가, 물의 알칼리화 등의 특성을 나타낸다. 
     이런 기능성 세라믹 볼을 주성분으로 하고 활성탄, 사문석, 게르마늄석(운모석), 산호사 등등을 성분으로 5단계 정수시스템을 통하여 세라믹필터의 기능의 극대화와 수명연장 및 각종 세균과 불순물을 제거하는 동시에 건강에 이로운 이온수를 생성하는 정수기용 필터시스템을 구현하고자 하는 데 본 발명의 목적이 있다. 
     본 발명은 기존의 필터방식보다 탁월하면서 비교적 저가로 대량생산이 가능한 장점도 아울러 지니고 있다. 
       
      기능성 세라믹 볼, 5단계 정수시스템, 정수기, 필터
Patent KR-20080022631-A (KR)
Title: Host device and image forming apparatus connected it and method for forming image thereof
Inventor: LEE IN HO
IPC: H04N1/32
Filed: 2006-09-07
Abstract: A host device, an image forming apparatus connected with the same, and a method thereof are provided to generate control data by setting special effects to be applied to image data, and generate a synthesized image where the special effects are applied to a binarization image and a multilevel image by using the generated control data. An image forming apparatus comprises a receiver(110) and a controller(120). The receiver receives image data and control data applied to the image data from a host device. The controller divides the image data into plural units, and controls each of the divided unit image data by referring to the control data. The receiver receives the control data and the at least two or more image data of binarization images, multilevel images and additional images.
Patent KR-20080022947-A (KR)
Title: Method of forming a gate in a nand flash memory device
Inventor: PARK EUN SHIL
IPC: H01L21/8247
Filed: 2006-09-08
Abstract: A method of forming a gate in a NAND flash memory device is provided to increase tungsten ratio in a tungsten silicide layer by forming and annealing a second polysilicon layer and the tungsten silicide layer. A tunnel oxide layer(102), a first polysilicon layer(104) and a dielectric layer(106) are sequentially formed on a semiconductor substrate(100). A second polysilicon layer(108), a tungsten silicide layer(110) and a hard mask layer(112) are sequentially formed on the dielectric layer. Then, the hard mask layer, the tungsten silicide layer, the second polysilicon layer, the dielectric layer and the first polysilicon layer are sequentially etched to form a gate. An annealing process is performed on the substrate comprising the gate.
Patent KR-20080023965-A (KR)
Title: Device for correcting bowleg
Inventor: SEO KYUNG BAE
IPC: A61F5/01
Filed: 2006-09-12
Abstract: A device for correcting hip joint is provided to maximize the correction effects without making a user's body difficult regardless of the difference in user's physical structures, and to minimize the idling phenomenon of a knee support. A device for correcting hip joint includes a couple of knee holder portions(250), a rotation driving portion and a control portion. The knee holder portions are rotated together with knees in the state of gripping user's knees. The rotation driving portion repeatedly drives the knee holder portions to be rotated forwardly/backwardly in the direction of rotating the knees in inner and outer directions. The control portion includes a memory for storing the rotation condition of the knee holder portion, and controls the rotation driving portion according to the rotation condition stored in the memory.
Patent KR-20080025551-A (KR)
Title: Apparatus and method for supplying urgent call service in a communication system
Inventor: LIM GEUN HWI
IPC: H04W4/90
Filed: 2006-09-18
Abstract: An apparatus and a method for providing an emergency call service in a communication system are provided to inform a user about an emergency situation within a short time and provide general call services according to their priority levels. When a base station receives a message ranging request from a terminal, the base station performs a message ranging procedure(311). The base station checks whether a medium access control address checked in the message ranging procedure is for an emergency call service(313). If the medium access control address is for an emergency call service, the base station processes a corresponding message ranging procedure with the highest priority level(315). The base station performs a capacity negotiation, a registration procedure with the terminal(319). The base station provides a corresponding service to the terminal(321).
Patent KR-20060116768-A (KR)
Title: Door opening and closing device for refrigerator
Inventor: HONG JONG HO
IPC: F25D23/02
Filed: 2006-09-21
Abstract: An apparatus for opening and closing a door of a refrigerator is provided to minimize an impact generated when the door is opened and closed by providing an absorption member between a hinge unit and a door separating unit. An apparatus for opening and closing a door of a refrigerator includes a plurality of doors(35,35R,35L), a hinge unit(45), and stoppers(80,85). The plurality of doors open and close the refrigerator body. The hinge unit connects the doors and the refrigerator body so that the doors can be rotated or translated with respect to the refrigerator body. The stoppers are provided in the refrigerator body to determine the closed position of the door by restricting the movement of the hinge unit when the door is closed.
Patent KR-20070036724-A (KR)
Title: Process for the photoprotective treatment of artificially dyed keratin fibres by application of a liquid water/steam mixture
Inventor: LALLEMAN BORIS
IPC: A61K8/36
Filed: 2006-09-29
Abstract: Method of treating keratinous fibers, particularly human hair comprises applying a composition to the fibers and applying a water/steam mixture having a temperature of 35[deg]C, where the composition: comprises a protecting agent having a log P value =6, in a medium; and excludes an oxidative colorant and an oxidant. An independent claim is included for a process of coloring the fibers comprising a direct or an oxidative coloring of the fiber followed by the above treatment.
Patent KR-20080030859-A (KR)
Title: Method for transmitting/receiving downlink synchronization channels in cellular communication systems supporting scalable bandwidth
Inventor: CHO JOON YOUNG
IPC: H04J11/00
Filed: 2006-10-02
Abstract: A method and an apparatus for transceiving downlink SCHs in a cellular wireless communication system supporting scalable bandwidth are provided to apply an SCH time mapping structure to TDD(Time Division Duplex) and FDD(Frequency Division Duplex) systems in common, support handover between different cells and inter-RAT(Radio Access Technology) handover in the system, and transmit all SCHs by downlink timeslots in the TDD system constantly. A method for transceiving downlink SCHs(Synchronization Channels) in a cellular wireless communication system comprises the following steps of: determining whether to arrive at a predetermined frame for the transmission of the SCHs, wherein the frame is comprised of plural TTIs(Transmission Time Intervals), and each TTI is comprised of first and second sub frames(701); mapping a first SCH sequence used in the acquisition of downlink synchronization and the acquisition of a cell ID(IDentifier) to the center subcarriers of a system band in the first sub frame of a first TTI predetermined out of the plural TTIs when SCH signals arrive at the predetermined frame and transmitting the mapped center subcarriers(702); mapping a second SCH sequence to the center subcarriers of both half bands constructing the system band in the second sub frame of the first TTI and transmitting the mapped center subcarriers(703); mapping the first SCH sequence to the center subcarriers of the system band in the first sub frame of a second TTI within the frame away from a time interval predetermined from the first TTI and transmitting the mapped center subcarriers(704); and mapping the second SCH sequence to the center subcarriers of the both half bands in the second sub frame of the second TTI and transmitting the mapped center subcarriers(705).
Patent KR-20060127818-A (KR)
Title: The spreading apparatus of beach mat for landing and the installation method of beach mat by it
Inventor: SEO HYUK JONG
IPC: B60P3/035
Filed: 2006-10-12
Abstract: A spreading apparatus of a beach mat for landing and an installation method of the beach mat using the same are provided to minimize the moving distance of the vehicle and minimize the power consumption by loading/unloading the spool to the side of the vehicle by using the loading apparatus unit. A spreading apparatus of a beach mat for landing is composed of outriggers(12) mounted at the front and rear of a trailer frame(11) to support the load of the loaded object; a turret plate(15) installed to by placing a crown bearing(14) at the center of the trailer frame; a hydraulic pressure motor(13) rotating the turret plate; a loading apparatus unit(20) loading/unloading the spool at the turret plate; and a support guide arm(16) guiding the beach mat by using the guide roller of the front end. The loading apparatus unit contains a fixing plate, a crane arm rotatably installed at the upper side of the fixing plate, a loading arm loading/unloading the spool, and first and second hydraulic pressure cylinders rotatably mounted at the fixing plate and the crane arm respectively.
Patent KR-20070043626-A (KR)
Inventor: SANO TAKAYOSHI
IPC: B29C61/10
Filed: 2006-10-19
Abstract: 롤러는 외부 관형 부재와, 중심 샤프트와, 외부 관형 부재와 중심 샤프트를 연결하고 롤러의 축의 중심 영역에서 외부 관형 부재와 중심 샤프트를 연결하는 연결 부재와, 롤러의 양 단부에서 외부 관형 부재와 중심 샤프트 사이에 배치된 굴곡 조절식 기구와, 외부 관형 기구와 굴곡 조절식 기구를 결합시키는 제1 베어링 구조와, 굴곡 조절식 기구와 중심 샤프트를 결합시키는 제2 베어링 구조와, 굴곡 조절식 기구의 회전을 방지하는 회전 방지 기구를 포함한다.  굴곡 조절식 기구는 롤러의 반경 방향으로 제1 베어링 구조와 제2 베어링 구조 사이의 거리를 개별적으로 조절하는 복수의 스페이서 구조들을 갖는다. 
       
     롤러, 외부 관형 부재, 중심 샤프트, 연결 부재, 굴곡 조절식 기구
Patent KR-20070049968-A (KR)
Inventor: JUNGBAUER MANFRED
IPC: B66B9/16
Filed: 2006-11-07
Abstract: 본 발명은 승강 설비 (1) 의 제조 방법에 관한 것으로, 상기 승강 설비는 제 1 설치 위치 (10) 에 드라이브 유닛 (4) 을 구비한 지지판 (3), 승강실 (5) 및 균형추 (6) 를 포함하며, 드라이브 유닛 (4) 은 승강실 (5) 과 균형추 (6) 를 구비한 지지 케이블 (8) 을 사용하여 연결 가능하며, 체인 호이스트 (14) 를 갖는 크로스 부재 (12) 는 제 2 설치 위치 (11) 위에 장착되고, 체인 호이스트 (14) 는 지지 체인 (15) 에 대해 지지판 (3) 에 연결되며, 지지판 (3) 은 제 1 설치 위치 (10) 로부터 해제되고, 지지판 (3) 은 체인 호이스트 (14) 에 의해 제 1 설치 위치 (10) 로부터 제 2 설치 위치 (11) 로 상승되어서 마침내 지지판 (3) 은 제 2 설치 위치 (11) 에 장착된다.     또한, 본 발명은 승강 설비 (1) 에 관한 것으로, 승강로 벽 (18, 20) 에 지지판 (3) 을 장착하는 기능을 하는 1 이상의 오목부 (19, 24, 25) 는 설치 위치 (10, 11) 와 관련된다.
Patent KR-20080041935-A (KR)
Title: Method and apparatus for interpolating video
Inventor: SOHN YU MI
IPC: H04N19/587
Filed: 2006-11-08
Abstract: A method and an apparatus for interpolating video are provided to reduce the transmission amount of an interpolation filter coefficient applied to the interpolation of each sub pixel and to reduce the aliasing effect. A storing member(410) stores the predetermined look up table having plural interpolating filter coefficient groups applied to each sub pixel position between the integer pixels of the input image. A candidate interpolating image generating member(420) interpolates the input image by applying plural interpolating filter coefficient groups and then produces the candidate interpolating images. A selection member(430) selects the final interpolating image among the candidate interpolating images according to the error value between the candidate interpolating images and the input image. The interpolating filter coefficients at each sub pixel position are classified according to the frequency response characteristics so that the plural interpolating filter coefficient groups are obtained.
Patent KR-20080042461-A (KR)
Title: Process for the preparation of imipenem
Inventor: KIM MOON SIK
IPC: C07D487/04
Filed: 2006-11-10
Abstract: A process for the preparation of imipenem is provided to improve preparation yield and purity of imipenem by performing reaction under mild reaction conditions by using an intermediate thienamycin solvate, so that the imipenem is produced in an industrial scale. A process for the preparation of crystalline imipenem monohydrate represented by the formula(I) comprises the steps of: reacting thienamycin solvate represented by the formula(IV) with benzylformimidate represented by the formula(V) in the presence of secondary amine at -40 to -75 deg. C to prepare carboxyl-protected imipenem represented by the formula(VI); hydrogenating the carboxyl-protected imipenem represented by the formula(VI) with 5-10% palladium catalyst in the presence of morpholine or N-methylmorpholine buffer solution at 0-25 deg. C and 4-6 atmospheric pressure; and isolating and crystallizing the reaction product in the presence of ketone solvent, wherein R1 is easily removable carboxyl-protecting group and is selected from benzyl, p-nitrobenzyl and methoxybenzyl; and R2 is alkyl group or aryl group, wherein the thienamycin solvate represented by the formula(IV) is selected from 1,3-dimethyl-2-imidazolidinone(DMI), 1,3-diethyl-2-imidazolidinone(DEI), 1,3-dipropyl-2-imidazolidonone(DPI), 1,3-dibutyl-2-imidazolidinone(DBI), 1,3-diisopropyl-2-imidazolidinone(DIPI) and 1,3-di-t-butyl-2-imidazolidinone(DTBI). Further, the secondary amine is an N,N-diisopropylethylamine.
Patent KR-20070053147-A (KR)
Inventor: HA TAE KWON
IPC: C22C38/18
Filed: 2006-11-17
Abstract: 열간공구용 공구나 금형으로 사용되는 열간공구강의 제조방법이 제공된다. 이 열간공구강의 제조방법은, 중량%로, C: 0.25~0.5%, Si: 0.2~1.5%, Mn: 0.2~1.5%, Cr: 2.5~9.5%, Ni: 2.5%이하, Mo: 0.3~2.5%를 포함하고 여기에 W: 5.0%이하와 V: 1.5% 이하의 1종 또는 2종, 기타 불가피한 불순물과 나머지 Fe로 조성되는 강 빌렛을 950~1150℃의 범위에서 오스테나이징 처리한 후, 3~100℃/분의 속도로 냉각한 다음 180~420℃의 범위에서 템퍼링 처리하는 것이다.  
     본 발명에 따르면 목표에 맞는 안정된 경도를 확보하는 동시에 충분한 인성을 가진 열처리재를 생산함으로써, 열간공구강으로 제조된 공구 및 금형제품의 품질을 향상시키고 생산단가를 낮추는 효과가 있다. 
       
     열간공구강, 고경도, 고인성, 저온템퍼링, 크롬계, 내산화성
Patent KR-20080046066-A (KR)
Title: Synchronization control device, dual port memory having synchornization control device and method for controlling synchonization in dual port memory
Inventor: HA SOON HOI
IPC: G06F12/00
Filed: 2006-11-21
Abstract: A dual port memory having a synchronization control device, a multi-processor system having the same, and a synchronization control method thereof are provided to guarantee continuous synchronization between tasks even if context switching occurs between the tasks in a multitasking environment executing a plurality of tasks in one processor. A memory array(210) has at least one shared memory area(211-217) accessed by first and second processors(110,120). A first memory interface(220) performs data read/write operations from/on the shared memory area based on address/control signals of the first processor. A second memory interface(230) performs the data read/write operation from/on the shared memory area based on address/control signals of the second processor. A memory access controller(295) includes a plurality of semaphore cells(260-290) controlling exclusive access to the shared memory areas, and a synchronization controller(240) inputting/outputting access request/grand signals independently on the semaphore cell corresponding to the shared memory area which is accessed by at least one task executed in the first or second processor.
Patent KR-20070116528-A (KR)
Title: Remote control system and method using automatic telephone response
Inventor: SONG YEONG BAE
IPC: H04M11/00
Filed: 2006-11-23
Abstract: An automatic response type remote control system and its method are provided to perform remote controlling and monitoring through an established communication network at a remote area by additionally installing only an image monitoring device. Outlets(210) are connected with a power source. A contact point switching unit(202) turns on/off power of the outlets(210). A wireless transmitting/receiving unit(201) is wirelessly connected with an automatic response type remote control device(100). A controller(204) controls power of the outlets(210) according to a received control signal. A communication network connection terminal(101) is connected with a remote communication unit(501) through a communication network. A remote signal detector(106) interprets a key input signal from the remote communication unit(501). A controller(108) controls a digital outlet(200) according to the interpreted remote signal. A wireless transmitting/receiving unit(109) is wirelessly connected with the digital outlet.
Patent KR-20080048145-A (KR)
Title: Eject pin and manufacturing process thereof
Inventor: SHIM JIN SOO
IPC: B29C45/40
Filed: 2006-11-28
Abstract: An eject pin is provided to obtain excellent price competitiveness by manufacturing the eject pin at reduced production costs as compared with a conventional eject pin, and a manufacturing method of the eject pin is provided. In an eject pin(1) comprising a slide part(2) with a long length and a holding part(3) with a short length which is formed at end portion of one side of the slide part, and of which a diameter is larger than that of the slide part, the eject pin is characterized in that the holding part is joined, in an assembling manner, with a stepped end portion(2b) which is formed on an end portion of one side of the slide part in a state that the end portion is stepped and has a diameter smaller than that of the slide part, and which has diamond grooves(2c) formed on the entire outer face thereof in a way that the diamond grooves cross one another, wherein the holding part is joined with the stepped end portion in a state that an inner face of the assembling hole of the holding part is tightly sealed with an outer face of the stepped end portion and filled into the diamond grooves intersecting one another at the same time by forging after inserting the holding part onto the stepped end portion, thereby assembling the holding part with the stepped end portion in a state that the stepped end portion is enveloped by an assembling hole formed in the center of the holding part.
Patent KR-20080054647-A (KR)
Title: Real-time dual color assay for detecting protein-protein interaction and an apparatus therefor
Inventor: KANG SEONG HO
IPC: G01N33/68
Filed: 2006-12-13
Abstract: A dual color assay method is provided to detect real-time dynamics of temperature-dependent protein-protein interaction in solution in the single-molecule level by using a dual-wavelength laser-induced fluorescence, so that real-time fluorescence images of individual protein molecule labeled with different fluorescence dyes are monitored simultaneously without delay of time. A dual color assay method for detecting protein-protein interaction comprises the steps of: measuring the interaction between an analyte antigen protein and an antibody protein by using enzyme-linked immunosorbent assay; and interpreting the measured results by using the double-wavelength color of wavelength X and Y selected from 440 nm, 488 nm, 545 nm, 580 nm and 635 nm, wherein the enzyme-linked immunosorbent assay contains an analyte protein antigen A having a fluorescence label of wavelength X, a first antibody protein anti-A binding to the analyte protein antigen A, and a second antibody protein anti-B having a fluorescence label of wavelength Y, binding to the first antibody protein anti-A; and the analysis temperature is 12-32 deg. C.
Patent KR-20080056367-A (KR)
Title: Frame mold, chassis and backlight unit having the frame mold and the chassis
Inventor: EUN HEE KWON
IPC: G02F1/1333
Filed: 2006-12-18
Abstract: A frame mold, a chassis and a backlight unit including the same are provided to prevent the light leakage phenomenon between an LCD(Liquid Crystal Display) panel and a light source panel. A frame mold supports an LCD panel. A chassis covers the frame mold. An optical panel(330) supplies the light beam to the LCD panel. The frame mold includes an opening portion(323) at a portion of the frame mold corresponding to a gap between the optical panel and the LCD panel. The frame mold receives the optical panel at the surface opposite to a surface of the LCD panel so that the light beam generated from the light source panel is supplied to the LCD panel. The frame mole includes the slidingly combined and detachably installed light source panel. The frame mold includes a protrusion portion(325) for combining the light source panel slidingly. An optical sheet is located between the frame mold and the LCD panel and enhances the optical characteristics of the light beam supplied from the light source panel.
Patent KR-20080057590-A (KR)
Title: Ca containing high ni content duplex stainless steels for the hot workability improvement
Inventor: MA BONG YEAR
IPC: C22C38/08
Filed: 2006-12-20
Abstract: Ca containing high Ni content duplex stainless steel is provided to improve hot workability increase by adding Ca and Ti to an alloy. Ca containing high Ni content duplex stainless steel is obtained by adding 0.001 to 0.01% of Ca to an alloy consisting of, by a weight ratio, C: less than 0.03%, Si: less than 1.0%, Mn: less than 2.0%, Ni:7.5 to 9.5%, Cr:21.5 to 23.5%, Mo:2.5 to 3.5%, N:0.12 to 0.20%, and the remainder Fe and unavoidable impurities. The alloy is added with less than 0.1% of Ti.
Patent KR-20080057649-A (KR)
Title: Navigation method of vehicle information terminal and apparatus thereof
Inventor: JUNG IN SUNG
IPC: G01C21/34
Filed: 2006-12-20
Abstract: A navigation method in a vehicle information terminal and an apparatus thereof are provided to prevent waste of time to drop by a gas station which is not located on a path to the destination. A navigation method in a vehicle information terminal includes the steps of: setting a path to a destination(S11); calculating a DTE(Distance To Empty) of the vehicle by checking the remaining fuel(S12); searching gas stations on the path based on the DTE(S13); selecting one of the gas stations the vehicle can reach with the remaining fuel(S14); notifying the driver with sound if the selected gas station is the last station which the vehicle is able to reach with the remaining fuel(S15,S16); and guiding the selected gas station if the driver selects road guidance to the selected gas station(S17,S18).