baber/WOPTO huggingface dataset:
Patent JP-2015533846-A (JP)
Title: アルコール混合物から不飽和アルデヒドを直接的に合成するための方法
IPC: B01J23/881
Filed: 2013-10-17
Abstract: 本発明は、メタノールとエタノールまたはプロパノールとの混合物からアクロレインまたはメタクロレインを直接的に合成するための方法に関する。本発明の方法は、選択的酸化触媒存在下、原料の軽質アルコールの酸化、次いで、縮合（アルドール化）触媒存在下、酸化中に生成したアルデヒドのアルドール化による縮合といった２つの連続した段階を含む。または、この２つの段階は、単一の触媒存在下、特に、モリブデン系の選択的酸化触媒存在下で行うことができる。これらの２つの段階は、単一の反応器または２個の接続した反応器で行うことができる。
Patent JP-2016504824-A (JP)
Title: 協調的サウンドシステム
IPC: H04S5/02
Filed: 2013-10-28
Abstract: 全般に、協調的サウンドシステムを形成するための技法が説明される。１つまたは複数のプロセッサを備えるヘッドエンドデバイスが、本技法を実行することができる。プロセッサは、スピーカーを各々含み協調的サラウンドサウンドシステムに加わることが可能なモバイルデバイスを特定するように構成され得る。プロセッサは、このシステムの１つまたは複数の仮想スピーカーとしてモバイルデバイスの各々のスピーカーを利用し、次いで、オーディオ信号がモバイルデバイスのスピーカーによって再生されるときにオーディオ信号のオーディオ再生が協調的サラウンドサウンドシステムの１つまたは複数の仮想スピーカーから発生しているように見えるようにオーディオソースからオーディオ信号をレンダリングするように、協調的サラウンドサウンドシステムを構成することができる。プロセッサは次いで、レンダリングされた処理されたオーディオ信号を、協調的サラウンドサウンドシステムに加わるモバイルデバイスに送信することができる。
Patent JP-2016502624-A (JP)
Title: 背面接続遠心ポンプ
IPC: F04D29/42
Filed: 2013-12-02
Abstract: 背面接続遠心ポンプは、ポンプ入口（１１１）、ポンプ出口（１１９）、ポンプシャフト（１０７）、背面接続配置にある第１の段（１１３）の組及び第２の段（１１５）の組を備える。段の２つの組の間には、中間交差モジュール（１１７）が配置される。第１及び第２の段の組は、それぞれの第１の外側ダイアフラム（１２９）および第２の外側ダイアフラム（１３９）を備える。外側ダイアフラム及び中間交差モジュールは、重ね合わされてポンプケーシングを形成する。中間交差モジュールは、第１と第２の段の組との間の軸方向移送チャネル（１５５）及び第２の段の組とポンプ出口との間の流体接続部を形成する。第２のダイアフラムは、周方向に配置された貫通開口（１７１）をそれぞれに備える。貫通開口は、軸方向移送チャネルを段の第２の組のインペラの最上流インペラと流体的に接続する少なくとも１つの通路（１７３）を形成するように位置決めされる。【選択図】図２
Patent JP-2016504849-A (JP)
Title: 圧力補償エレメントを有するラウドスピーカ
IPC: H04R1/28
Filed: 2013-12-05
Abstract: ラウドスピーカは、音響変換器、ハウジングおよび温度に影響を及ぼすための手段、例えば圧力補償エレメントなどを含む。音響変換器は膜を含み、前記膜はハウジングと共に気体容量を囲んでいる。音響変換器は膜を振動させるように構成され、それにより、気体容量は振動に従って変化する。温度に影響を及ぼすための手段は、気体容量の温度変化によって、膜の振動による状態の変化に対抗するように構成される。【選択図】図１
Patent JP-2015536853-A (JP)
Title: 無撚繊維を含む物品およびその使用方法
IPC: B32B5/28
Filed: 2013-11-27
Abstract: 本明細書中に記載の特定の実施形態は、無撚繊維を含む複合材料に向けられている。いくつかの実施形態では、物品は熱可塑性ポリマーと強化用繊維とを含むコア層を含むことができる。その他の実施形態では、無撚繊維はコア層に設けることができる。特定の実施例では、物品は塗装されたときにクラスＡ仕上げを得るのに有効である。【選択図】図１
Patent JP-2016503084-A (JP)
Title: 熱可塑性組成物
IPC: C08K5/42
Filed: 2013-12-19
Abstract: 本発明は、向上した機械的性質を有し、レーザーを使用して活性化された後にめっきすることができる熱可塑性組成物であって：ａ）熱可塑性ベース樹脂３０〜６０重量％；ｂ）レーザーダイレクトストラクチャリング添加剤１．０〜８．０重量％；ｃ）酸化アルミニウム、窒化ホウ素、またはその組み合わせ５〜４０重量％、ｄ）難燃剤５〜２５重量％および；ｅ）ガラス繊維５〜３０重量％；を含む、熱可塑性組成物に関する。【選択図】なし
Patent JP-2016506179-A (JP)
Title: 無線通信システムで高速スモールセルのスイッチングが可能なセル操作方法及び装置
IPC: H04W28/16
Filed: 2013-12-27
Abstract: 無線通信システムから任意のマークでカバレッジに含まれるサブセルの高速サブセルスイッチングサポート方法は端末から複数個のサブセルに対する複数個のフィードバック情報を受信する受信段階と、前記受信したフィードバック情報のそれぞれでチャンネル品質インジケーターを抽出する抽出段階と、及び前記抽出されたチャンネル品質インジケーターの大きさを比べ、前記比較結果によって前記端末の高速サブセルスイッチングするか否かを決定する決定段階と、を含むことを特徴とする。
Patent JP-2016509475-A (JP)
Title: 試料から標的分画を抽出するための、摺動可能な蓋を組み込む装置および方法
IPC: G01N1/28
Filed: 2013-10-03
Abstract: 生体試料から標的物質を分離するための装置および方法が提供される。標的物質は固相基質に結合されて、標的結合された固相基質を形成する。本装置は、複数の領域を有する上側表面を備えた下側プレートを含む。生体試料は、領域の第１の部分上に受け入れ可能である。上側プレートは、下側プレートの上側表面に向けられた下側表面を有する。力が上側プレートに隣接して配置され、標的結合された固相基質を上側プレートの下側表面に向かって引き付ける。上側プレートおよび下側プレートの少なくとも１つは、生体試料内の標的結合された固相基質が上側プレートの下側表面に引き寄せられる第１の位置から、また、標的結合された固相基質が生体試料から分離される第２の位置から移動可能である。
Patent JP-2016522903-A (JP)
Title: 音声を認識するシステムおよび方法
IPC: G06F3/16
Filed: 2014-05-19
Abstract: システムおよび方法が、単語のシーケンスを含む音声を認識する。音響モデルおよび言語モデルを用いて音声の解釈の組が生成され、スコアの組を生成するために、解釈ごとに、単語のシーケンスを表す解釈の正確さを表すスコアが求められる。次に、単語シーケンス制約の受信に応答して求められた制約との各解釈の整合性に基づいてスコアの組が更新される。
Patent JP-2016506877-A (JP)
Title: ツールユニット用の補償装置及びツールユニットを用いる嵌合方法
IPC: B25J13/00
Filed: 2014-02-05
Abstract: 本発明は、要素（２２）を被加工物（２６、２８）の孔（２４）に嵌合させるためのツールユニット（１６）用の補償装置（１８）に関し、ツールユニット（１６）は、補償装置（１８）を用いて、ハウジング（２０）上に軸方向（１９）に配向して取り付けられ、補償装置（１８）は、クランプ装置（３６）の初期状態においてはツールユニット（１６）をハウジング（２０）に強固に固定し、クランプ装置（３６）の補償状態においてはツールユニット（１６）の動作範囲を定める異なる自由度を設定するように設計された少なくとも２つの制御可能クランプユニット（４６、４８）を有する、ツールユニット（１６）とハウジング（２０）との間に配置されたクランプ装置（３６）を有し、補償装置（１８）は、クランプユニット（４６、４８）を起動するように設計された制御ユニット（４２）をさらに有する。【選択図】図２ｂ
Patent JP-2016509844-A (JP)
Title: 自動非侵襲細胞活性追跡のための装置、方法、およびシステム
IPC: G01N21/17
Filed: 2014-02-28
Abstract: 細胞活性の自動非侵襲評価のための装置、方法、およびシステムが提供される。一実施形態において、装置は、画像に示されている１つ以上の細胞を特徴付ける複数の仮説からある仮説を選択するように構成されている仮説選択モジュールを含む。複数の仮説の各々は、画像に示されている１つ以上の細胞の幾何学的特徴に基づく、１つ以上の細胞の推測特性を含む。仮説選択モジュールは、メモリまたは処理デバイスのうちの少なくとも１つにおいて実装される。
Patent JP-2017121725-A (JP)
Title: Printing element substrate, liquid ejection head, and printing apparatus
Inventor: YAMAGUCHI TAKAAKI
IPC: B41J2/05
Filed: 2016-01-06
Abstract: PROBLEM TO BE SOLVED: To provide a printing element substrate which is reduced in size through the simplification of the structure but yet is capable of keeping the liquid ejection performance stable.SOLUTION: A printing element substrate comprises: a plurality of printing elements 101; a first transistor 102 forming an electric path common to the plurality of printing elements 101; and a plurality of second transistors 103 each driving respective printing elements independently of each other. Between a first power node 104a and a second power node 105a are formed electric paths for the first transistor 102, one of the plurality of printing elements 101, and one of the plurality of second transistors 103, in this order. The electric path connecting each of the plurality of printing elements 101 and the first transistor 102 is dualized.SELECTED DRAWING: Figure 1
Patent JP-2016131369-A (JP)
Title: High frequency signal amplifying device
Inventor: TAKAGI KAZUTAKA
IPC: H03F3/68
Filed: 2016-01-06
Abstract: PROBLEM TO BE SOLVED: To provide a high frequency signal amplifying device that can suppress loop oscillation among plural Doherty amplifiers.SOLUTION: A high frequency signal amplifying device has a distributor, a first amplification part, a second amplification part, an oscillation suppressing part and a compositor. The first amplification part has a first distribution part, a first carrier amplifier, a first peak amplifier and a first composition part. The second amplification part has a second distribution part, a second carrier amplifier, a second peak amplifier and a second composition part. The second carrier amplifier is adjacent to the first carrier amplifier, or the second peak amplifier is adjacent to the first peak amplifier. The oscillation suppressing part suppresses oscillation occurring between the adjacent first carrier amplifier and second carrier amplifier or between the adjacent first peak amplifier and second peak amplifier. The compositor combines signals output from the first composition part and the second composition part.SELECTED DRAWING: Figure 4
Patent JP-2017125457-A (JP)
Title: Oil free screw compressor
Inventor: INAZAKI MIO
IPC: F04C27/00
Filed: 2016-01-14
Abstract: PROBLEM TO BE SOLVED: To provide an oil free screw compressor which certainly returns lubricating oil leaking out from an oil seal portion of an oil seal to the oil seal portion, with an oil returning groove.SOLUTION: An oil free screw compressor includes: a screw rotor; a shaft sealing device 30 which has a bearing which supports a rotor shaft 21, an oil seal 31 disposed on the bearing, and a gas seal disposed on a rotor chamber side; an atmosphere communication space 55 communicating to an atmosphere communication hole 31a; and an oil returning groove 21a which has a returning inclined surface 71 inclined so as to expand a diameter outward in a diametrical direction from a gas seal side end portion 72 to an oil seal side end portion 73. The oil seal portion 32 is a visco-seal made from a spiral groove portion 62. An inner peripheral surface 51 of the oil seal has an inner peripheral boundary portion 58 defining a part of the atmosphere communication space on a bearing side of the atmosphere communication hole, and the oil seal side end portion 73 is disposed near the inner peripheral boundary portion and on the bearing side.SELECTED DRAWING: Figure 3
Patent JP-2017125246-A (JP)
Title: High strength steel
Inventor: KOCHI TAKUYA
IPC: C22C38/00
Filed: 2016-01-15
Abstract: PROBLEM TO BE SOLVED: To realize a high strength steel excellent in hydrogen embrittlement resistance for hardness of 650 Hv or more.SOLUTION: A high strength steel includes, by mass%, 0.9-1.1% C, 0.15-0.75% Si, 0.1-1.7% Mn, 0.9-2.0% Cr, over 0% to 0.025% or less P, over 0% to 0.025% or less S, over 0% to 0.055% or less Al, over 0% to 0.015% or less Ti, over 0% to 0.025% or less N, over 0% to 0.0025% or less O and the balance Fe with inevitable impurities. In the structure, a ratio of retained austenite is 12.0-15.0 vol.%, the content of solid solution C in the retained austenite is 0.55-0.70 mass%, and hardness is 650-770 Hv.SELECTED DRAWING: None
Patent JP-2017129904-A (JP)
Title: Information processor, information processing method, and record medium
Inventor: TSURUMI SHINGO
IPC: G06T19/00
Filed: 2016-01-18
Abstract: PROBLEM TO BE SOLVED: To provide an information processor capable of estimating the size of an object in a real space.SOLUTION: The information processor includes: an acquisition unit that acquires an image of a real object in a real space picked up by a predetermined imaging unit and a measurement result of the distance up to the real object measured by a predetermined distance measuring unit; and an estimation unit that estimates the size of the real object in the real space based on the size of the real object in the image and the measurement result of the distance, and compares the estimation result of the size to preset candidates of plural sizes to thereby identify the size of the real object in the real space.SELECTED DRAWING: Figure 2
Patent JP-2016135539-A (JP)
Title: Press mechanism
Inventor: ZHANG YONGHUI
IPC: B26F1/14
Filed: 2016-01-22
Abstract: PROBLEM TO BE SOLVED: To provide a press mechanism.SOLUTION: The invention discloses a press mechanism comprising: a body frame; a drive member; a transmission member which is driven by the drive member; and a die set on which, the transmission member drives a press work. The transmission member manages a transmission shaft driven by the drive member, and an eccentric structure being eccentric to an axial line of the transmission shaft and links to the transmission shat, the eccentric structure has a transmission part coupled to the die set, and the die set is fitted on a guide member which is fixed to the body frame, and the die set can reciprocate along a guide direction of the guide member. The invention converts a circular motion locus on the transmission shaft into a stroke of the die set directly, using a transmission method of a vertical link structure, an intermediate crosslinking unit is eliminated, efficiency is significantly improved. In addition, press can be more precisely performed, an error is small, quality of the acquired product is preferable and stable, a stroke height of a press mold is adjusted by using installation of a minute adjustment member, and precise minute adjustment of the stroke height is achieved.SELECTED DRAWING: Figure 1
Patent JP-2017133050-A (JP)
Title: Method for recovering scandium
Inventor: HIGAKI TATSUYA
IPC: C22B3/26
Filed: 2016-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a method for recovering scandium capable of easily and efficiently recovering high purity scandium from nickel oxide ore.SOLUTION: Provided is a method for recovering scandium comprising: a first neutralization step where a scandium-containing solution is passed through an ion exchange resin, a neutralizer is added to an eluate eluted from the ion exchange resin to perform a neutralization treatment, and primary neutralized precipitates and a primary neutralization filtrate are obtained by solid-liquid separation; a second neutralization step where a neutralizer is further added to the primary neutralization filtrate to perform a neutralization treatment, and secondary neutralization precipitates and a secondary neutralization filtrate are obtained; a hydride dissolution step where an acid is added to the secondary neutralization precipitates to obtain a hydroxide solution a solvent extraction step where the hydroxide solution is subjected to solvent extraction; and a scandium recovery step where scandium oxide is recovered from an extraction residual liquid separated in the solvent extraction step.SELECTED DRAWING: Figure 3
Patent JP-2016083477-A (JP)
Title: Game machine
Inventor: OIKE NORIAKI
IPC: A63F7/02
Filed: 2016-01-27
Abstract: PROBLEM TO BE SOLVED: To provide a game machine, even when a power supply of the game machine is turned off, capable of notifying a specific device of opening of a door body.SOLUTION: When an inner frame 12 is closed, an inner-frame terminal plate output circuit 300a can ground one end of a capacitor CD7 by a switch SW3-3. Therefore, when the inner frame 12 is closed, an electric charge accumulated in the capacitor CD7 when the inner frame 12 is opened, is instantaneously discharged via the switch SW3-3 so as to be nulled. In this way, until the inner frame 12 is opened again, the electric charge accumulated in the capacitor CD7 is constantly nulled, so that, even when the inner frame 12 is continuously opened a plurality of times in a short time, an integration circuit 281 is normally operated, so that, regardless of the opening period of the inner frame 12, a fall period of a voltage to be applied to TRG terminal of a timer IC1 can be set to a fixed time (approximately 2 ms).SELECTED DRAWING: Figure 34
Patent JP-2016083478-A (JP)
Title: Slot machine
Inventor: NAKAJIMA KAZUTOSHI
IPC: A63F5/04
Filed: 2016-01-27
Abstract: PROBLEM TO BE SOLVED: To continuously provide a player with a feeling of expectation by derivation of a specific display result (a so-called chance outcome) that may be derived when it is determined to allow an occurrence of a specific general winning (e.g., a small winning combination).SOLUTION: When a player wins a challenge bonus (1) or (2) accompanied by a transfer to an extremely advantageous game state to the player, and when the player wins a red cherry or white cherry as a one-token winning combination, a slot machine derives a chance outcome according to operation order of stop buttons. Regular bonuses (1) and (2) are configured not to be missed and have mutually different types of component symbols, so that it is difficult for the player to recognize winning thereof. In a regular bonus game state based on the winning of the regular bonus (1) or (2), a winning probability of the red cherry and the white cherry is extremely high, so as to increase games to derive the chance outcome. Further, after termination of the regular bonus (1), the game state is controlled into an RT (Replay Time) in which a winning probability of replay is enhanced more than the normal game state.SELECTED DRAWING: Figure 17
Patent JP-2017135664-A (JP)
Title: Image reading device
Inventor: HAMAGUCHI MASANORI
IPC: G03B27/62
Filed: 2016-01-29
Abstract: PROBLEM TO BE SOLVED: To provide an image reading device capable of maintaining a state where the image reading device is in contact with a guide part at projections, even if the projection is worn or a carriage is deformed.SOLUTION: An image reading device comprises a support part, a guide part, a carriage and a reading part. A recess is provided in the carriage. A first projection, a second projection, a third projection, a fourth projection, a fifth projection and a sixth projection are provided in the recess. In the case where the carriage is placed on the guide part, the first projection, the second projection, the third projection and the fourth projection are brought into contact with the guide part in their distal ends in a direction of protrusion. The fifth projection and the sixth projection are formed in such a manner that the amounts of protrusion in the direction of the protrusion are smaller than the first projection, the second projection, the third projection and the fourth projection.SELECTED DRAWING: Figure 6
Patent JP-2017136211-A (JP)
Title: Articulating brace
Inventor: ISHIDA YOSHIMITSU
IPC: A61H3/00
Filed: 2016-02-03
Abstract: PROBLEM TO BE SOLVED: To provide an articulating brace that can suppress the occurrence of rattling and achieve smooth movement for a long time by improving durability of a connecting member for performing rocking motion.SOLUTION: A leg brace 1 includes a lower leg supporting member 2 attached to the lower leg and supporting the lower leg, a sole placing member 3 for placing a sole, a heel holding member 4 holding the heel, and a connecting member 5 for connecting the lower leg supporting member 2 with the sole placing member 3. The connecting member 5 includes a first member 9 having a sole fixing part 9A fixed to the sole placing member 3 and a first connection part 9B, and a second member 10 having a lower leg fixing part 10A fixed to the lower leg supporting member 2 and a second connection part 10B swingably connected to the first connection part 9B. A sliding material 16 is coated on an entire surface comprising a surface 9E and a backside 9F of the first connection part 9B, and the first connection part 9B and the second connection part 10B are brought into abutment with each other through the sliding material 16.SELECTED DRAWING: Figure 3
Patent JP-2017136762-A (JP)
Title: Japanese paper insert molding and method for producing the same
Inventor: MATSUI HIDEO
IPC: B29C39/10
Filed: 2016-02-04
Abstract: PROBLEM TO BE SOLVED: To provide a Japanese paper insert molding which allows a transparent base material used in a building material or the like to finish its appearance to appearance utilizing feeling of Japanese paper, and can strongly integrate transparent surface and back base materials in molding without mounting an outer frame on the edge of the surface and back base materials, and to provide a method for efficiently manufacturing the same.SOLUTION: There is provided a Japanese paper insert molding P having a Japanese paper layer 2, which uses Japanese paper having thickness of 0.1-2.0 mm and a basis weight of 50-200 g/mas a material, provided between a pair of transparent base material layers 1 formed from a thermosetting resin, where the transparent base material layers 1 are bonded to and integrated with a thermosetting resin impregnated in the Japanese paper.SELECTED DRAWING: Figure 1
Patent JP-2016093568-A (JP)
Title: Game machine
Inventor: MIYAHARA TAKESHI
IPC: A63F7/02
Filed: 2016-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a game machine characterized in a number-of-reservation display.SOLUTION: The game machine includes symbol display means, decoration symbol display means, first reservation display means, second reservation display means, and third reservation display means capable of displaying a third reservation display. The second reservation display means can display a read-ahead forenotice display. The number of reservations notified by the second reservation display means is same as the number of reservations notified by the third reservation display means. When the number of reservations notified by the first reservation display means is changed, the number of reservations notified by the second reservation display means is also changed and, when the number of reservations notified by the first reservation display means is changed, the number of reservations notified by the third reservation display means is also changed.SELECTED DRAWING: Figure 28
Patent JP-2017142646-A (JP)
Title: Network system, and control method for the same
Inventor: NISHIZAWA TSUNEJI
IPC: G06Q50/12
Filed: 2016-02-10
Abstract: PROBLEM TO BE SOLVED: To accurately manage use situation of seats of a shop having a plurality of seats available for customers.SOLUTION: When a person-in-charge of a hall performs input corresponding to accounting to a tablet terminal 13, a receipt printer RP provided at a register counter issues a receipt on which at least information related to the accounting and seat identification information identifying a seat utilized by a customer are printed on the basis of a first control command received, and transmits the seat identification information to a control server 15. When the person-in-charge of the hall performs input corresponding to an order to the tablet terminal, a slip printer DP provided at a kitchen issues an order slip on which at least information indicating contents of the order of the customer utilizing the seat and the seat identification information of the seat utilized by the customer are printed on the basis of a second control command received, and transmits the seat identification information to the control server 15. The control server 15 manages use situation of seats possessed by a shop by customers based on the seat identification information received.SELECTED DRAWING: Figure 2
Patent JP-2016178853-A (JP)
Title: Commercial frequency current converter and control method therefor
Inventor: WU HONG-YANG
IPC: H02M1/00
Filed: 2016-02-10
Abstract: PROBLEM TO BE SOLVED: To provide a commercial frequency current converter whose current on the input side or the output side is commercial frequency current, and a control method for the converter.SOLUTION: A commercial frequency current converter comprises: a switching element; and a controller for controlling ON and OFF of the switching element. The controller generates control signals having at lest two types of different fixed frequencies in a half period of a commercial frequency period to generate at least two times of alternate variation in an actuation frequency of the switching element, which reduces junction temperature in the switching element in the half period of the commercial frequency period. Use of the technique according to the present application makes it possible to reduce the junction temperature in the switching element, making it possible to reduce device heat radiation pressure on the converter.SELECTED DRAWING: Figure 5
Patent JP-2017143201-A (JP)
Title: Light source device and information acquisition device
Inventor: SUGA TAKAKO
IPC: G01N21/01
Filed: 2016-02-12
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive light source device with high output.SOLUTION: A game machine has: a substrate having a principal surface; a light-emitting device mounted on the principal surface; and a light amplifier mounted on the principal surface and amplifying emitted light from the light-emitting device. Regarding a radiation angle of the emitted light from the light-emitting device, a spread angle in a vertical direction with respect to the principal surface of the substrate is 10° or less. The light amplifier has a plurality of optical waveguides having incident ends on an incidence plane where the emitted light from the light-emitting device is made incident. An interval between centers of two adjacent optical waveguides among the plurality of optical waveguides is between three times to ten times as long as a central wavelength of the emitted light from the light-emitting device.SELECTED DRAWING: Figure 2
Patent JP-2017147482-A (JP)
Title: Imaging device and railway monitoring system
Inventor: KITAMURA SHOGO
IPC: H04N7/18
Filed: 2016-02-15
Abstract: PROBLEM TO BE SOLVED: To provide an imaging device capable of obtaining an image following a traveling direction of a rail track without any mechanical driving mechanism.SOLUTION: An imaging device includes an imaging unit for imaging a rail track in front of a railway vehicle and generating an input image signal, a rail track direction detector for detecting the direction of the rail track from the input image signal and outputting rail track direction information, a horizontal direction cut-out unit for cutting out an image in a direction indicated by the rail track direction information out of the input image signal, and an image output unit for outputting the image cut out by the horizontal direction cut-out unit. The rail track direction detector detects the direction of the rail track by using a part of a video line in the horizontal direction of the input image signal and the horizontal direction cut-out unit cuts out and outputs an image indicated by the rail track direction information.SELECTED DRAWING: Figure 1