baber/WOPTO huggingface dataset:
Patent JP-2011506478-A (JP)
Title: 炭水化物からヒドロキシメチルフルフラール（ｈｍｆ）への変換及び誘導体
IPC: C07D307/68
Filed: 2008-12-12
Abstract: 炭水化物源を固相触媒に接触させることによって炭水化物源から実質的に純粋なＨＭＦ、ＨＭＦエステル及び他の誘導体を生産する方法。炭水化物出発物質を、カラム内の溶媒中で加熱して有機酸の存在下で連続的に固相触媒を通過させるか、又は、溶液中で有機酸及び固体触媒と共に加熱してＨＭＦエステルを形成する。有機酸を用いずに加熱することによってＨＭＦが形成される。得られた生成物を濾過によって精製して未反応出発物質及び触媒を除去する。次いで、ＨＭＦエステル又はＨＭＦ及びＨＭＦエステルの混合物は、加圧条件下でＨＭＦエステルを酢酸コバルト、酢酸マンガン及び臭化ナトリウム等の有機酸と結合させることによって、２，５−フランジカルボン酸（ＦＤＣＡ）に酸化してもよい。代替的に、ＨＭＦエステルを還元してフラン又はテトラヒドロフランジオールを形成してもよい。 【選択図】なし
Patent JP-2011508617-A (JP)
IPC: A61F2/30
Filed: 2008-12-12
Abstract: A process for producing a ceramic implant which is structured on the surface at least in the region in contact with bone and/or tissue is described. The process is characterized in that the ceramic implant after shaping and sintering is, in the region to be structured, I. reduced to the corresponding metal on the surface; II. the essentially metallic surface is subsequently subjected to a structuring surface treatment; III. the structure surface is oxidized. Furthermore, implants which have been provided with a topological structure on the surface by means of this process are described.
Patent JP-2011509789-A (JP)
IPC: A61B8/08
Filed: 2009-01-23
Abstract: An ultrasonic imaging apparatus and method are described for monitoring the progress of therapy for pathology such as lesions, tumors, and metastases by means of contrast agent imaging. A sequence of images are acquired as a bolus of contrast agent infuses the tissue containing the pathology. Time-intensity curves of pathology and normal tissue are produced and used to measure perfusion in the pathology as affected by therapy. The motional effects of respiration can be taken into account during image acquisition by detecting the position of a landmark such as the diaphragm in each of the images of the sequence and discarding from processing those images which exhibit a change in the position of the landmark relative to the probe.
Patent JP-2011510597-A (JP)
Title: 搬送波検知を用いた直交周波数分割多重アクセス
IPC: H04J1/00
Filed: 2008-12-19
Abstract: アクセスポイントおよびアクセスポイントを介して通信する１つまたは複数のデバイスが、直交周波数分割多重アクセス（ＯＦＤＭＡ）を適応的に適用する通信システム。アクセスポイントは、従来のＯＦＤＭＡでのようにデバイスに直交副搬送波を割り当てることができるが、アクセスポイントは、副搬送波上でアクティビティを検知し、アクティビティなしの副搬送波を割当て用に選択する。代替手法では、ＯＦＤＭＡ通信用に構成されたデバイスが、ＯＦＤＭＡをサポートしないデバイスからチャネル割当てを受信し得る。ＯＦＤＭＡ可能デバイスは、割り当てられたチャネル内の副搬送波の一部分のみを使うことができ、この一部分は、非ＯＦＤＭＡデバイスに伝達することができる。その間、非ＯＦＤＭＡデバイスは次いで、通信をエラーがあるものとして誤って分類するのを避けるために、エラー検出および訂正において未使用副搬送波を無視してよい。ＯＦＤＭＡ能力、副搬送波割当ておよび使用中の副搬送波についての情報は、ビーコンおよびプローブメッセージなど、ネットワーク制御通信において情報要素として伝達することができる。
Patent JP-2011512076-A (JP)
Title: 長期的ｃｓｉ支援ｍｕ−ｍｉｍｏスケジューリング方法、基地局およびユーザ装置
IPC: H04B7/04
Filed: 2008-01-30
Abstract: 本発明は、それぞれのユーザ装置の平均チャネル行列を使用することによってマルチユーザ・スケジューリングを実施するマルチユーザ・スケジューリング・ステップと、マルチユーザ・スケジューリングで選択されたそれぞれのユーザ装置の瞬時チャネル行列を使用することによってマルチユーザ・プリコーディングを実施するマルチユーザ・プリコーディング・ステップとを備えるマルチユーザ多入力多出力スケジューリング方法を提案する。本発明は、本発明のマルチユーザ多入力多出力スケジューリング方法を実施するために使用される基地局およびユーザ装置をも提案する。
Patent JP-2011512085-A (JP)
Title: サービス品質ベースのアップリンクポーリングスキームのための方法および装置
IPC: H04W72/04
Filed: 2009-01-30
Abstract: ポーリング帯域幅を割り当てるための方法は基地局によって維持されたコネクションに対応するポーリングトークンを発生することを含むことができる。ポーリングトークンは構成可能な時間間隔で発生されることができる。この方法はまたポーリングトークンにプライオリティを割り当てることを含むこともできる。ポーリングトークンのプライオリティは対応するコネクションのスケジューリングタイプによることができる。この方法はまたアップリンク帯域幅がポーリングについて割り当てるために使用可能である時に最高のプライオリティのポーリングトークンに対応するコネクションにポーリング帯域幅を割り当てることも含むことができる。
Patent JP-2011517341-A (JP)
Title: 小細胞肺癌バイオマーカーパネル
IPC: G01N33/53
Filed: 2009-02-19
Abstract: 本発明は、概して癌の検出、診断、亜型分類、病期分類、予後、処置および予防の分野に関するものである。さらに特定すれば、本発明は、患者における肺癌の検出および／または診断および／または亜型分類および／または病期分類方法に関するものである。バイオマーカーの特定のパネルに基づいて、本発明は、肺癌を検出、早期診断し、および／または小細胞肺癌（ＳＣＬＣ）を非小細胞肺癌（ＮＳＣＬＣ）と区別し、ＮＳＣＬＣ内で扁平上皮細胞癌（ＳＣＣ）、腺癌（ＡＣ）間を区別し、ＳＣＣ内でＧ２およびＧ３病期を識別し、肺癌内で神経内分泌に由来する肺癌と由来しない肺癌を区別する方法を提供する。さらに本発明は、インビトロおよびインビボの両イメージング技術を含む、患者における病気の進行のモニタリングにおける上記バイオマーカーパネルの使用に関するものである。インビトロイメージング技術は、典型的には上記患者から採取した試料、例えば血清または組織試料においてバイオマーカーのタンパク質または抗体を検出する免疫検定法を含む。インビボイメージング技術は、典型的には胸部放射線写真（Ｘ線）、コンピューター連動断層撮影（ＣＴ）イメージング、スパイラルＣＴ、ポジトロン放射断層法（ＰＥＴ）、ＰＥＴ−ＣＴおよびシンチグラフィーを含み、分子イメージングおよび診断および患者における病期の進行および処置応答のモニタリングを行う。したがって、本発明はさらなる態様では、インビトロおよびインビボ適用を目的とする上記バイオマーカーパネルの遺伝子発現またはタンパク質レベルを測定するための試薬を含む、上記診断および／または亜型分類および／または病期分類検定法およびイメージング技術を実施するためのキットを提供する。
Patent JP-2011512147-A (JP)
Title: ＢＲＣＡ１ｍＲＮＡ発現による、シスプラチンによるネオアジュバント化学療法で治療されている膀胱癌患者の生存期間の予測
IPC: C12Q1/68
Filed: 2009-02-20
Abstract: 本発明は、ＢＲＣＡ１の発現レベルを基に膀胱癌に罹った患者の臨床転帰を予測する方法であって、ＢＲＣＡ１発現レベルが高いことが良くない予後を示すものである方法に関する。さらに、本発明は、特に腫瘍の外科的除去に先立って化学療法で治療されている患者におけるＢＲＣＡ１の発現レベルを基に、膀胱癌に罹った患者の化学療法に対する反応を予測する方法に関する。
Patent JP-2011515795-A (JP)
Title: イオン性液体を含有する触媒インクならびに電極、ｃｃｍ、ｇｄｅおよびｍｅａの製造における該触媒インクの使用
IPC: H01M8/10
Filed: 2009-02-26
Abstract: 本発明は、少なくとも１つの触媒活性材料および少なくとも１つのイオン性液体を含有する触媒インク、この触媒インクの製造法、触媒インクを膜上に施こすかまたはこの触媒インクを場合によっては存在するガス拡散層上に施こすことによって、少なくとも１つの膜および少なくとも１つの電極を含む膜電極ユニット（ＭＥＡ）の製造法、膜電極ユニット（ＭＥＡ）、触媒被覆された膜（ＣＣＭ）またはガス拡散電極（ＧＤＥ）を製造する際の前記触媒インクの使用、ならびに触媒インクを製造するためのイオン性液体の使用に関する。
Patent JP-2012142863-A (JP)
Title: Portable electronic device, hold setting system, control method of portable electronic device, and program
Inventor: TABATA SEISHI
IPC: H04Q9/00
Filed: 2011-01-05
Abstract: PROBLEM TO BE SOLVED: To easily set/cancel a hold function to an operation of a device without using a mechanistic switch.SOLUTION: An operation part 12 having a touch panel operation part 122 receives various operations. A hold function processing part 171 limits processing by the operation received by the operation part 12. A detection part 13 detects approach of a predetermined device. When a predetermined device is approaching based on detection by the detection part 13, a control part 17 cancels a limitation by the hold function processing part 171. When a predetermined device is not approaching, the control part 17 controls the hold function processing part 171 to perform limitation processing.
Patent JP-2012140692-A (JP)
Title: Metal ultra-fine powder
Inventor: YOSHIDA YUJI
IPC: B22F1/00
Filed: 2011-01-06
Abstract: PROBLEM TO BE SOLVED: To provide metal ultra-fine powder of nano size of indium or the like obtained by a simple manufacturing method capable of easily restraining a cost from rising up when manufactured.SOLUTION: The metal ultra-fine powder is obtained through a laminating process for obtaining a laminate laminated with the first layer comprising a water-soluble resin, and the second layer including metal, in this order on a surface of a polymer resin base material, and a separation-pulverization process for separating at least the second layer from the laminate, to pulverize it. The metal ultra-fine powder has a substantially coin-like (substantially disc-like) shape, and the maximum diameter part of the metal ultra-fine powder has a size of 10 nm or more to 1 μm or less, and the maximum thickness part thereof has a thickness of 10 nm or more to 100 nm or less.
Patent JP-2012144626-A (JP)
Title: Thermally conductive resin composition and thermally conductive sheet
Inventor: AKAGI KOKI
IPC: C08L77/00
Filed: 2011-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a thermally conductive resin composition with high formability and productivity, and exhibiting high thermal conductivity even when the percentage of an expensive thermally conductive inorganic filler is small; and to provide a thermally conductive sheet.SOLUTION: The thermally conductive resin composition contains a thermally conductive inorganic filler having an anisotropic shape, a heat resistant particle and a thermoplastic resin, wherein the heat resistant particle can hold the particle shape at the melting temperature of the thermoplastic resin. Preferably the heat resistant particle is talc or a crosslinked polyacrylic ester particle having the average particle size of 1-50 μm, and the thermal conductivity of 30 W/m K or lower. The thermally conductive inorganic filler is preferably a platy or fibrous electroconductive or insulative inorganic filler.
Patent JP-2012144230-A (JP)
Title: Inter-vehicle body wiring structure of railroad vehicle and wiring support device used therefor
Inventor: MIYOSHI MOTOTSUGU
IPC: B61G5/10
Filed: 2011-01-14
Abstract: PROBLEM TO BE SOLVED: To follow the relative movement between vehicle bodies in curved travel, without receiving fatigue and damage, by enabling wiring in a space area of restraining a height.SOLUTION: The problem is solved by performing wiring so that the middle of transition wiring 5 and 6 passed between the vehicle bodies 1 and 2 by being supported by fixed support tools 3 and 4 arranged in end parts 1a and 2a of the front-rear vehicle bodies 1 and 2 is supported so as to be rockable by passing through rotary support tools 8 supported so as to be rotatable around vertical shafts 7 between the end parts 1a and 2a of the vehicle bodes 1 and 2.
Patent JP-2012148240-A (JP)
Title: Membrane separator and method of separation utilizing flat membrane
Inventor: OIKE TETSURO
IPC: B01D63/00
Filed: 2011-01-19
Abstract: PROBLEM TO BE SOLVED: To provide a method for membrane separation utilizing diffusion of molecules and particles as a method for separating and purifying substances under a mild condition, and a device enabling the method, easy in handling and enabling assembling and reusing.SOLUTION: In a method for separating substances mainly utilizing the difference in diffusion rates of molecules and particles, a membrane cartridge is used in which porous flat membranes 1 having a multilayer structure and flow channel spacers 2 of a cardboard corrugate type or a lattice type are stacked alternately so that the flow channel directions thereof cross to each other, thereby a part of solvent and solute of fluid made to flow through a primary side flow channel is separated and purified through the flat membranes, and is discharged to a secondary side flow channel directed to a direction diagonal to that of a primary side fluid. Because the entire side surface of the membrane cartridge becomes inlets and outlets of the flow channel, a separator is simplified. Because the method for separation is performed under a mild low pressure condition, bearing stress or an adhesion force required for stacking the membranes and the flow channel spacers can be small, and assembling, disassembling and reusing of the membrane cartridge are allowed.
Patent JP-2012156185-A (JP)
Title: Wiring board and manufacturing method therefor
Inventor: YAMASHITA TORU
IPC: H05K1/02
Filed: 2011-01-24
Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of a poor connection at an edge portion by suppressing an increase of insulating layer thickness at the board edge portion.SOLUTION: Second wiring 60 corresponding to a common electrode 44 of a piezoelectric actuator 8 of an FPC 48 includes a tip portion 60a having a broader width than first wiring 58 corresponding to an individual electrode 42. The tip portion 60a is disposed on an edge portion 55a of a board 55. Further, on the tip portion 60a, there is provided a second connection electrode portion 59 to be connected to the piezoelectric actuator 8 through a bump 53 composed of a conductive adhesive agent. Further, in the region of the tip portion 60a of the second wiring 60, a hole portion 60b is formed at a position between the second connection electrode portion 59 and an edge 61 of the board 55.
Patent JP-2012043401-A (JP)
Title: Touch panel system having multi-touch detection function and method for detecting multi-touch
Inventor: CHAO YONG XU
IPC: G06F3/041
Filed: 2011-01-24
Abstract: PROBLEM TO BE SOLVED: To provide a touch panel system having a multi-touch detection function and a method for detecting multi-touch.SOLUTION: The method for detecting multi-touch comprises steps of: scanning N first sense lines in a first axis direction of a touch panel and detecting at least one first sense line touched by at least one object based on the scanned result; inputting at least one high frequency signal to the at least one first sense line touched by the at least one object and inputting M low frequency signals to M second sense lines in a second axis direction of the touch panel; and receiving and detecting M feedback signals in the M second sense lines in the second axis direction and determining a position of at least one touch point based on the M feedback signals.
Patent JP-2012154411-A (JP)
Title: Fastener
Inventor: FUKUMOTO MITSURU
IPC: F16B19/10
Filed: 2011-01-26
Abstract: PROBLEM TO BE SOLVED: To provide a fastener, which can be operated from one side, without turning hands to the reverse side, and which can be improved in safety.SOLUTION: A fastener configured in such a manner that a member to be affixed is affixed to an affixation member by inserting a portion of the fastener through affixation holes respectively provided in the affixation member and the member to be affixed. The fastener is provided with: a grommet having legs, a portion of each of which is inserted through the affixation holes; a pin member movably inserted through the grommet and capable of holding leg sections in an expanded state, the leg sections being provided to the legs; and an operation member pivotably supported by the grommet and having a pressing section for moving the pin member within the grommet. Because the pin member moves within the grommet and holds the leg sections in the expanded state when the operation member is moved from an upright state to a turned over state, the fastener can be affixed and released from one side, and as a result, the ease of work is improved. Also, the release operation is adapted to be performed in two stages, and this increases safety.
Patent JP-2012152798-A (JP)
Title: Tool for shaping coating agent
Inventor: MAEYAMA KENICHI
IPC: B22C9/06
Filed: 2011-01-27
Abstract: PROBLEM TO BE SOLVED: To provide a tool for shaping a coating agent, which can uniformly shape a surface coated with a coating agent which is applied to a hole part, easily by a simple structure.SOLUTION: The shaping tool includes: a stem 3 fixedly disposed so as to define a T-shape with a handle part; an inner diameter finishing blade 5 formed plurally in an end of the stem 3 while extended from an axis line of the stem 3 in a direction perpendicular to the axis line and arranged with equally spaced intervals in a circumferential direction of the stem 3, having a cutting edge 8 formed in the edge thereof and inserted into inner sides of a boss and the hole part; a height finishing blade 6 disposed plurally so as to encircle the inner diameter finishing blade 5 and finishing an outer end surface of the boss; and a positioning part 7 continuously formed on the outer periphery side of the height finishing blade 6 while protruded more than the height finishing blade 6, abutting on a surface of a substrate formed with the hole part to finally determine an inner diameter dimensions of the boss and the hole part to which the coating agent is applied and a height dimension of the boss and also having a groove 11 for discharging cutting chips caused by the height finishing blade 6 to the outside.
Patent JP-2012156952-A (JP)
Title: Controller and control method
Inventor: ITO AKINORI
IPC: H04Q9/00
Filed: 2011-01-28
Abstract: PROBLEM TO BE SOLVED: To provide a controller and communication method for more efficiently controlling a plurality of apparatuses by utilizing a few sensors.SOLUTION: There is provided a controller 100 comprising a memory 101 that stores first correspondence of at least one sensor for detecting a person to a plurality of apparatuses. Either of the at least one sensor is mapped to two or more apparatuses. The controller also comprises: a communication interface 105 for communicating with the at least one sensor and the plurality of apparatuses; and a processor 100 for controlling the plurality of apparatuses corresponding to the sensor through the communication interface based on a detection result from each of the at least one sensor by referring to the first correspondence.
Patent JP-2011217354-A (JP)
Title: Illuminating device and image reading apparatus
Inventor: ONO NOBUAKI
IPC: H04N1/04
Filed: 2011-01-31
Abstract: PROBLEM TO BE SOLVED: To provide an illuminating device reducing generation of a shadow during document reading, improving document read quality and achieving highly efficient illumination, and to provide an image reading apparatus including the illuminating device.SOLUTION: The illuminating device 10 includes at one side of a sub scanning direction of an irradiation area A irradiated with light: a plurality of LED light sources 11 arrayed along a main scanning direction of the irradiation area A; and a first converging member 13 for converging light emitted from the plurality of LED light sources 11 to the irradiation area. At another side of the sub scanning direction of the irradiation area A, the illuminating device 10 includes a second converging member 14 for converging light emitted from the plurality of LED light sources 11 to the irradiation area A. In the illuminating device 10, Light beam refraction members 16 having different thicknesses are disposed on an optical path between the first converging member 13 and the irradiation area A. The image reading apparatus includes the illuminating device.
Patent JP-2012149492-A (JP)
Title: Window regulator
Inventor: NOZAWA TATSUYA
IPC: E05F11/44
Filed: 2011-01-31
Abstract: PROBLEM TO BE SOLVED: To provide a window regulator at low costs, capable of moving a large window glass up and down.SOLUTION: A window regulator 10 includes a lift arm 20 having a base end rotatable relative to a door panel, a drive mechanism 22 which rotates the lift arm 20, and a movable guide 30 to which a window glass is attached and which moves up and down along with the rotation of the lift arm 20. The lift arm 20 includes a sub-arm 23 which is turnably assembled to the approximate center part into a Y-shape. The movable guide 30 includes a slider 30d which engages a shaft 24 at the tip of the lift arm 20 and a holder 30a which engages a shaft 23a at the tip of the sub-arm 23.
Patent JP-2014065662-A (JP)
Title: Pharmaceutical product for animal comprising macrolide derivative
Inventor: KURIHARA KENICHI
IPC: A61P31/04
Filed: 2011-01-31
Abstract: PROBLEM TO BE SOLVED: To provide a novel antibacterial agent for animals having excellent antibacterial activity against bacterial infection.SOLUTION: It is found that a compound (1) has excellent antibacterial activity against pathogenic bacteria of respiratory infection of animals.
Patent JP-2012160984-A (JP)
Title: Stereoscopic acoustic reproduction device and stereoscopic acoustic reproduction method
Inventor: DATE TOSHIHIKO
IPC: H04N5/60
Filed: 2011-02-02
Abstract: PROBLEM TO BE SOLVED: To solve the following problem: Display units for home use have various screen sizes and the depth and projection amount of a stereoscopic image based on a binocular parallax are determined based on a parallax amount of a horizontal image; therefore when a display size to be displayed changes with the resolution of an image signal constant, a pixel pitch changes with each display size, and the depth and projection amount of the stereoscopic image changes with a display size to be displayed.SOLUTION: By implementing stereoscopic acoustic processing in accordance with screen size information of a display that displays a stereoscopic image, the stereoscopic acoustic reproduction processing with high matching of an image signal with an acoustic signal and higher realism is achieved with an effective calculation amount.
Patent JP-2011176810-A (JP)
Title: Generating and implementing signal protocol and interface for higher data rates
Inventor: ANDERSON JON JAMES
IPC: H04M1/72412
Filed: 2011-02-07
Abstract: <P>PROBLEM TO BE SOLVED: To achieve generation and implementation of a signaling protocol and an interface for higher data rates.  <P>SOLUTION: The interface is adapted for a data interface for transferring digital data between a host and a client through a communication link employing packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signaling protocol is employed by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, in which at least one link controller resides in the host device and is coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, and high-speed data transfer mechanism through a short-range "serial" data link.  <P>COPYRIGHT: (C)2011,JPO&INPIT
Patent JP-2012165323-A (JP)
Title: Successive approximation type ad conversion device and successive approximation type ad conversion method
Inventor: NAITO TATSURO
IPC: H03M1/38
Filed: 2011-02-09
Abstract: PROBLEM TO BE SOLVED: To provide a technique for detecting a deviation of a sample voltage above or below a predicted range.SOLUTION: An AD converter 1 (successive approximation type AD conversion device) having a DA converter 4, a comparator 5 and a successive approximation register 6, and predicting a possible range of a sample voltage to determine upper n bits of the successive approximation register 6 beforehand and then AD-converting the sample voltage to generate output data includes a Max/Min value generation circuit 10 (generation circuit) and a Max/Min value comparison circuit 11 (data comparison circuit). The Max/Min value generation circuit 10 generates a maximum predicted value and a minimum predicted value of the predicted range of the sample voltage on the basis of the upper n bits of the successive approximation register 6 determined beforehand. The Max/Min value comparison circuit 11 compares the output data with the maximum predicted value and the minimum predicted value.
Patent JP-2012168357-A (JP)
Title: Aqueous colloidal solution, preparation method of aqueous colloidal solution, manufacturing method of infrared reflecting film, infrared reflecting film and infrared reflector
Inventor: KONO JUNICHI
IPC: G02B5/26
Filed: 2011-02-15
Abstract: PROBLEM TO BE SOLVED: To provide an infrared reflecting film manufactured at a low cost, allowing expansion of a film area, and having a superior infrared reflectivity, high visible light transmittance, and superior uniform optical characteristics, and to provide a manufacturing method thereof, an aqueous colloidal solution for use in the manufacturing method, and a preparation method of the aqueous colloidal solution.SOLUTION: The aqueous colloidal solution distributedly including metal oxide particles, the metal oxide particles are collagen peptides or gelatines of mean molecular weight of 70,000 or less, and the metal oxide particles are formed under the presence of low-molecular-weight gelatines containing no gelatines of molecular weight of 100,000 or more, or containing 1.0 mass% or less of gelatines of molecular weight of 100,000 or more.
Patent JP-2012175345-A (JP)
Title: Wireless device and transmission method
Inventor: SHIBATA YUICHI
IPC: H04J11/00
Filed: 2011-02-21
Abstract: PROBLEM TO BE SOLVED: To provide a technology for improving frequency utilization efficiency in transmitting an OFDM signal under the situation where frequency division multiplexing is performed.SOLUTION: A guard interval correlation processing unit 16 investigates bands in which other wireless devices are transmitting OFDM symbols, among a plurality of bands which are continuously disposed in a frequency domain. An operation control unit 18 stores an investigated result. The operation control unit 18 selects a first band that is one of the bands in which the other wireless devices are transmitting OFDM symbols, and a second band in which any other wireless device is transmitting no OFDM symbol, on the basis of the stored investigated result. An OFDM frame constitution timing generation unit 32 generates timing synchronized to an OFDM symbol received in the selected first band. A frequency conversion unit 36 transmits the OFDM symbol in the selected second band in accordance with the generated timing.