baber/WOPTO huggingface dataset:
Patent JP-2008164291-A (JP)
Title: Flow analysis system
Inventor: SAITO TADASHI
IPC: G01N31/16
Filed: 2006-12-26
Abstract: <P>PROBLEM TO BE SOLVED: To provide a flow analysis system capable of rapidly and automatically performing pretreatment, capable of minimizing an added pretreatment solution and capable of measuring trace amounts of an element in a sample solution, in real time.  <P>SOLUTION: A pretreatment means has: a flow rate ratio changing means for changing the flow rate ratio of the flow rate of an analyzing target liquid and/or that of the pretreatment liquid with the elapse of time, by changing the flow rate ratio; a liquidity measuring means for measuring the liquidity of the mixed liquid of the analyzing target liquid and the pretreatment liquid and a liquidity determining means for determining whether the liquidity becomes a predetermined state. The flow rate ratio changing means functions so as to be able to change the flow rate ratio, even in a positive direction and a negative direction, corresponding to the liquidity, when the direction increasing the flow rate ratio of the pretreatment liquid with respect to the mixed liquid of the analyzing target liquid and the pretreatment liquid is set in the positive direction so as to guide the mixed liquid to an analysis means, when the liquidity goes into a predetermined state.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008161324-A (JP)
Title: Game machine
Inventor: TAKAGI HITOSHI
IPC: A63F5/04
Filed: 2006-12-27
Abstract: <P>PROBLEM TO BE SOLVED: To provide a game machine capable of preventing the inner space of a revolving light device from being excessively heated by the operation of the revolving light device.  <P>SOLUTION: A first vent hole 61E communicating the outside and the inner space 120 is formed on a case member (main body case 61) of the revolving light device 60, and a second vent hole 63B communicating the outside and the inner space 120 is formed on a cover member (lens 63). When a motor 68 provided in the inner space 120 of the revolving light device 60 is driven, a rotary reflector 64A turns around a light source (lamp 65) through a reflector turning mechanism part 100, and a fan (fan unit 69) is rotated through a fan rotating mechanism part 110. By the rotation of the fan (fan unit 69), outside air is taken in from the first vent hole 61E and the air is discharged from the second vent hole 63B.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008163829-A (JP)
Title: Fuel injection pump
Inventor: HANIYU TOSHIHARU
IPC: F02M59/44
Filed: 2006-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a fuel injection pump capable of preventing seizure of an eccentric cam and a bushing by smoothly supplying lubricating oil.  <P>SOLUTION: A variable restriction quantity means varying quantity of fuel supplied to a cam chamber by adjusting restriction quantity of passage opening area is provided in a lubricating oil supply passage for supplying part of fuel delivered from a feed pump to a cam chamber. The variable restriction quantity means varies restriction quantity of a connection port 33a opening to a side surface of a valve chamber 26 holding a piston valve 27 by driving the piston valve 27 according to an expansion and contraction condition of a first spring 28 formed out of shape-memory alloy. Namely, restriction quantity of the connection port 33a gets large to limit quantity of fuel supplied to the cam chamber when temperature of fuel flowing into the valve chamber 26 is low. On the other hand, restriction quantity of the connection port 33a gets small to increase quantity of fuel supplied to the cam chamber as compared to a low temperature condition when temperature of fuel is high.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008164135-A (JP)
Title: Telescopic actuator
Inventor: SUYAMA KOICHI
IPC: B60G17/015
Filed: 2006-12-29
Abstract: <P>PROBLEM TO BE SOLVED: To reduce the axial size of a telescopic actuator using a feed screw mechanism.  <P>SOLUTION: When the feed screw mechanism 60 consisting of a male screw member 58 and a female screw member 59 engaged with each other is driven via a reduction gear 44 by a motor 33, relative displacement between the male screw member 58 and the female screw member 59 in the direction of an axis L can be output as telescopic motion with relative movement between first and second housings 31, 32. Since the feed screw mechanism 60 is arranged to encircle the outer peripheries of the motor 33 and the reduction gear 44 arranged on the axis L, the size of the telescopic actuator 14 in the direction of the axis L can be reduced as compared with the case that the motor 33, the reduction gear 44 and the feed screw mechanism 60 are arranged in series on the axis L.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008161609-A (JP)
Title: Game machine
Inventor: OKUMURA MASAHIRO
IPC: A63F7/02
Filed: 2006-12-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide a game machine which makes it impossible to easily remove a jig for removing a calking pin from a calking section.  <P>SOLUTION: A jig section 631 for removing a seal pin from a substrate side seal section is prepared in the bottom 601a of a base member 600. In a normal state, the jig section 631 is not exposed by the mounting of a main control board case on the base member 600. Further, since the main control board case is sealed in the base member 600 by a sealing means, the main control board case cannot be removed. As a result, it is difficult to remove the jig section 631 prepared in the base member 600.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008152744-A (JP)
Title: Semi-black spot generation renderer
Inventor: IKEDO TSUNEO
IPC: G06T15/60
Filed: 2006-12-18
Abstract: <P>PROBLEM TO BE SOLVED: To provide a means for drawing an image flooded with a plurality of light shielding bodies and superposed with respective semi-black spots (Ambler and Penambler parts), by a two-pulse type shadow generation method, as to a computer graphic drawing technique.  <P>SOLUTION: Objects adjacent geometrically or constituted hierarchically are grouped to allocate a shadow buffer in each group unit, a shadow polygon is stored using a hidden surface removal method, a coordinate value found by a polygon interpolation complementary circuit 50 is transformed into a light source system coordinate value by a light source system coordinate transformation circuit 52, a positional relation of a rendering point is calculated and tested in a comparator 56, based on these and the transformed light source system coordinate value, a distance from the light shielding body up to the rendering point is calculated, and the brightness of the semi-black spot is determined by using information of each buffer when judged as a shadow.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2006521788-A (JP)
IPC: A23L29/20
Filed: 2004-03-26
Abstract: The invention relates to a powder composition wherein the powder composition is reconstituted to form a protein drink with an increased stability, said powder composition comprising from about 3 to about 30% pectin (weight/weight of the protein content), the pectin having a degree of esterification 50%. The invention also relates to a process for the production of said powder composition and use thereof.
Patent JP-2006518069-A (JP)
IPC: G06F13/372
Filed: 2004-01-26
Abstract: There is disclosed a processor array, which achieves an approximately constant latency. Communications to and from the farthest array elements are suitably pipelined for the distance, while communications to and from closer array elements are deliberately "over-pipelined" such that the latency to all end-point elements is the same number of clock cycles. The processor array has a plurality of primary buses, each connected to a primary bus driver, and each having a respective plurality of primary bus nodes thereon; respective pluralities of secondary buses, connected to said primary bus nodes; a plurality of processor elements, each connected to one of the secondary buses; and delay elements associated with the primary bus nodes, for delaying communications with processor elements connected to different ones of the secondary buses by different amounts, in order to achieve a degree of synchronization between operation of said processor elements.
Patent JP-2006521251-A (JP)
Title: 容器用閉鎖装置
IPC: B65D55/02
Filed: 2004-03-18
Abstract: 蓋を備える容器（２）の閉鎖装置（１）であって、該蓋は使用において容器の開口部と密封可能に係合するよう構成され、該蓋は容器の開口部から蓋が解放されることを防止するために使用において開封帯を（４）介して容器に接続されるよう構成される易壊部（３）を備え、該易壊部は開封帯（４）を引っ張ることによって蓋から取り外し可能であり、これによって使用において、容器の開口部との密封可能な係合から蓋を解放させる容器用閉鎖装置。
Patent JP-2006521067-A (JP)
IPC: H03H17/06
Filed: 2004-03-19
Abstract: Systems and methods for providing protection from failure events in a digital audio amplification system. One embodiment of the invention comprises a system having a digital amplifier controller, an amplifier output stage (160) coupled to the controller and configured to receive audio signals from the controller, one or more sensors (180) coupled to the output stage (160) and one or more low-pass filters coupled to receive sensor signals from the one or more sensors, (180). The low-pass filter is configured to filter the sensor signals and to provide the filtered sensor signals to the controller, which provides a programmable response to the filtered sensor signals. The response may range from not taking any action, to limiting the amplification of audio signals, to shutting down the system.
Patent JP-2006520002-A (JP)
IPC: E04D15/02
Filed: 2004-03-05
Abstract: In one aspect of the invention, a builder's measuring and marking tool is provided. The tool comprises a planar member having a right triangle configuration, including a first side edge, a second side edge extending normal to the first side edge, and a third side edge intersecting the first and second side edges to form a hypotenuse of the right triangle configuration. The tool also comprises an elongated aperture spaced apart inwardly from the third side edge and bounded by at least one straight edge parallel to the third side edge, and first hip and valley marking indicia formed along the at least one straight edge of the elongated aperture. In addition, the tool comprises an aperture having a first inner side edge parallel to the at least one straight edge of the elongated aperture and second hip and valley marking indicia formed along the first inner side edge.
Patent JP-2006526077-A (JP)
Title: 溶浸マトリックスに保持される硬質成分を含む硬質複合材料を有する耐磨耗部材
IPC: C22C29/14
Filed: 2004-05-17
Abstract: 支持体（２２）に固定された硬質複合部材（２４）を含む耐磨耗部材（２０）。硬質複合部材（２４）は、その中に分布する個別硬質成分（３４）を含む。個別硬質成分（３４）の各々が約０．００１〜約１６平方インチの表面領域を有する。硬質複合部材（２４）が、粒子を含むマトリックス粉末（３０）を更に含み、略全ての硬質粒子が前記硬質成分の前記サイズより小さいサイズを有する。硬質成分（３４）およびマトリックス粉末（３０）は、硬質複合部材（２４）を形成するために、溶浸合金（３１）により共に結合される。支持体（２２）は溶浸合金（３１）と結合する材料から成る。
Patent JP-2006526787-A (JP)
Title: 光源波長修正
IPC: G02B/
Filed: 2004-06-03
Abstract: 波長修正関数は、反射率ベースの機器に取り込まれた実際の反射率値から修正された反射率値を提供する。修正は、実測反射率値の関数及び波長修正関数を具現化する反射率ベースの機器に関して立証された高分解能反射率値の既定のセットとして提供される。
Patent JP-2009514142-A (JP)
Title: マイクロ電気機械スイッチ（マイクロ電気機械スイッチのための貴金属コンタクト）
IPC: H01H59/00
Filed: 2004-06-02
Abstract: 【課題】  寿命が長く、安定した、接触抵抗の低い金属−金属スイッチを作製する方法を提供すること。 【解決手段】  銅電極への酸素障壁として働く貴金属コンタクトを備える半導体マイクロ電気機械システム（ＭＥＭＳ）スイッチが提供される。ＭＥＭＳスイッチは、ＣＭＯＳ半導体製造ラインに完全に組み込まれる。集積技術、材料、及びプロセスは、銅チップ金属化プロセスと完全に適合し、典型的には低コストの低温プロセス（４００℃以下）である。ＭＥＭＳスイッチは、キャビティの内部において一端又は両端がキャビティの壁に固定された可動ビームと、可動ビームに埋め込まれた第１電極と、キャビティの壁に埋め込まれ、第１電極と対向する第２電極とを含み、第１電極と第２電極はそれぞれ貴金属コンタクトでキャップされている。 【選択図】      図３７
Patent JP-2007503082-A (JP)
IPC: F21V29/15
Filed: 2004-08-04
Abstract: A lamp includes a burner secured to a holding device made of metal. The lamp further includes a bottom section made of plastic. In order that the lamp is of a simple, mechanically stable design, and nonetheless is thermally stable, in accordance with a first aspect, an opening of the bottom section is provided with projections in such a way that a base sleeve made of metal, which is disposed in the opening, does not bear laterally against the bottom section over its entire surface. In accordance with a second aspect, the base sleeve includes a flange which screens a top side of the bottom section, at least partially, against the burner, wherein a space remains between the flange and the top side of the bottom section.
Patent JP-2007504903-A (JP)
IPC: A46B15/00
Filed: 2004-09-09
Abstract: A head for an electric oral care implement for connecting to a handle portion, said handle having a first portion of an electrical connector, said head portion comprising an electrical element being a current emitting element, and a second portion of said electrical connector, wherein electrical communication between said head and said handle is provided when said head engages said handle.
Patent JP-2007505359-A (JP)
Title: 耐久性光学素子
IPC: F21V8/00
Filed: 2004-09-13
Abstract: 耐久性光学フィルム（１１）は、微細構造化表面と１．０〜１．６５または１．０〜１．１５の範囲内の引掻き傷コントラスト比値とを有する重合光学フィルム構造体を含む。これらの耐久性光学フィルムは、複数のナノ粒子と丸形プリズム頂部微細構造体とを含みうる。
Patent JP-2007501161-A (JP)
IPC: B60R21/38
Filed: 2004-03-16
Abstract: In a device for manually reversing a device for protecting passengers in a head-on collision in a motor vehicle, two hinges (3) are generally fixed in a rotationally displaceable manner for body-sided coupling of the front bonnet of the motor vehicle in the windscreen side area to a hinge carrier (2) which can be adjusted on the protection device to a predetermined lift, said device comprising a spring-loaded cylinder which is connected to a sensor controlled releasable retaining device. According to the invention, a solidly mounted, instantaneous traction bar (5, 8, 9) can be extracted to a predetermined length and is coupled in a rotationally displaceable manner to the front bonnet in the hinge area and to the solid body such that, in order to achieve a predetermined opening angle of the front bonnet of the traction bar (5, 8, 9), the maximum extraction length is achieved and when the front bonnet is opened further the coupling point of the traction bar, a new point of rotation is formed for the front bonnet on the front bonnet, and, using the front bonnet as a two-armed lever using a manual force on the front long lever and producing an active force on the hinge-sided short lever arm, a mounted hinge carrier (2) and, thereby, the released protection device (1, la), can be reversed in order to reverse the adjusted hinge carrier (2) and the front bonnet lifted on the hinge side.
Patent JP-2007513534-A (JP)
IPC: G06F21/00
Filed: 2004-05-18
Abstract: A data processing device including a microcontroller and configured to communicate with at least one remote system distributed on a network. The data processing device and the remote system are adapted to store a plurality of parameters identifying a user account belonging to a subscriber. The data processing device comprises a one-time parameter comprising the active account attached to the device designed for a one-time use, and a permanent parameter identifying an account attached to the data processing device, the permanent parameter being deactivated. The one-time and permanent parameter are stored in the at least one remote system, and the microcontroller is programmed to: use the one-time parameter to logon to the network when the data processing device is switched on; and exchanges the one-time parameter with the permanent parameter, upon successful logon to the network, the permanent parameter becoming the permanent active account. The first device and the at least one remote system store a parameter identifying a current active account attached to a second data processing device to replace, and upon successful logon to the network, a program automatically stored in the first device sends an activation request for exchanging the plurality of parameters from the old for the new one in the at least one remote system, with the current active account being deactivated.
Patent JP-2007502717-A (JP)
IPC: B23B51/04
Filed: 2004-05-18
Abstract: An edge-carrying drill body intended for deep hole drilling, is rotatable around a central geometric axis and comprises a through-channel arranged for internal chip evacuation. The channel mouths in front and rear ends of the drill body. A front channel mouth is bridged-over by a bridge on which a plurality of cutting edges are formed, which edges are made integrally with the rest of the bridge. The front mouth includes inlets disposed in front of respective cutting edges with reference to the direction of rotation of the body.
Patent JP-2007504281-A (JP)
Title: フェニルキノリンおよびそのエストロゲン受容体モジュレーターとしての使用
IPC: C07F7/02
Filed: 2004-05-13
Abstract: 本発明は、構造式：     ［式中、Ｒ １   、 Ｒ ２ 、Ｒ ３ 、Ｒ ４ 、Ｒ ５ およびＲ ６ は、明細書の記載と同意義である］ を有する式Ｉで示されるエストロゲン受容体モジュレーターまたはそのＮ−オキシドまたはその医薬上許容される塩またはそのプロドラッグに関する。
Patent JP-2007500597-A (JP)
Title: 冷凍システムにおける構成要素の改良された洗浄
IPC: C11D11/00
Filed: 2004-05-21
Abstract: 空気調和又は冷凍システムにおける構成要素(１４)を清浄化する方法及び装置(１０)。構成要素（１４）に存在する汚染物質を除去するため構成要素(１４)を通過するように液体溶剤をフラッシュすることが提供される。フラッシュされ構成要素(１４)を通過した溶剤を蒸発させ、引き続いて汚染物質を含む溶剤を浄化するために蒸発された溶剤から汚染物質を除去する。その後、蒸発され浄化された溶剤を液化し、液化された溶剤を再使用して構成要素(１４)を再び洗浄する。
Patent JP-2007508317-A (JP)
Title: Ｘａｎｔｈｏｃｅｒａｓｓｏｒｂｉｆｏｌｉａ抽出物を含む組成物、該抽出物から単離された化合物、それらを調製する方法、およびそれらの使用
IPC: A61K/
Filed: 2004-10-08
Abstract: 【解決課題】本発明は、Xanthoceras sorbifoliaの抽出物を含む組成物、該抽出物を生産する方法および過程を提供する。 【解決手段】この抽出物は、アルカロイド、クマリン、サッカリド、タンパク、ポリサッカリド、グリコシド、サポニン、タンニン、酸、フラボノイド、その他を含む。本組成物は、抗ガン、脳の加齢の防止、記憶力改善、脳機能の改善および、遺尿症、頻尿、尿失禁、痴呆、知能衰弱およびアルツハイマー病、自閉症、脳外傷、パーキンソン病、および、その他の脳の機能不全によってもたらされる疾患の治療、および、関節炎、リューマチ、循環不全、アテローム硬化症、レイノー症候群、狭心症、心臓障害、冠状動脈性心疾患、頭痛、眩暈、腎臓障害の治療、および、インポテンツおよび早漏の治療の治療に使用が可能である。本発明は、糖、テレペン例えばサポゲニン、および、炭素21と22に側鎖、例えばアンゲロイル基を含む化合物を提供する。本発明の化合物は、各種製薬学的、および治療的用途を有する。 【選択図】なし
Patent JP-2007511729-A (JP)
Title: 冷蔵庫
IPC: F25D23/12
Filed: 2004-11-12
Abstract: 本発明は、冷蔵庫に関する。本発明は、冷蔵庫本体５０に形成された貯蔵空間を開閉するドア５１、５３のうち、一側にコミュニケーションパッド６０を取り付けたものである。前記コミュニケーションパッド６０は、前記ドア５３の取付空間５８内に着脱自在に設置されるものである。前記コミュニケーションパッド６０の上端部は上部クランプ６１により取付空間５８内に取付けられるが、下端部は下部クランプ６１’により取付空間５８内に取付けられる。前記上部クランプ６１と下部クランプ６１’は、ヒンジアセンブリ６５により、取付空間５８に設置されるが、ヒンジアセンブリ６５は、上部クランプ６１と下部クランプ６１’が一定値あるいはそれ以上の力によってのみ回動するように構成されている。このような構成の本発明によると、コミュニケーションパッド６０をドア５３にさらに堅固に取り付けるとともに、ドアへの着脱が容易になるなどの効果が得られる。
Patent JP-2007514127-A (JP)
Title: 吸収式冷凍機／加熱機の多段再生器のための高効率乱流発生器
IPC: F25B33/00
Filed: 2004-12-09
Abstract: 排気により作動する吸収式冷凍機／加熱機の多段再生器に使用するための乱流発生器（４０）が開示される。乱流発生器（４０）は、乱流発生器（４０）における圧力低下を最小にし、こうして排気源への効率損失を最小にするように設計されている。乱流発生器の一設計は、中央ウェブ（４８）に対して非垂直の角度で延在する複数のフランジ（５０，６０）を有する。さらに、フランジのいくつかは切欠き部分（５８）を有する。全体的な乱流発生器設計は、さもなければ望ましくない圧力低下を生じさせる乱流発生器ブレードの下流の伴流を最小にすることを目的とする。乱流発生器の第二実施例（７０）は、中央ウェブ（７２）に対して垂直角度で延在するフランジ（７４，７６，７８）を備えるが、フランジは非矩形の断面形状を有する。
Patent JP-2008169707-A (JP)
Title: Exhaust system of outboard motor
Inventor: ITO JUN
IPC: F01N3/24
Filed: 2007-01-09
Abstract: <P>PROBLEM TO BE SOLVED: To provide an exhaust system of an outboard motor for reducing the size, while improving exhaust emission control performance.  <P>SOLUTION: The outboard motor 1 has a multicylinder engine 5 for arranging a cylinder head 17 in the rear of a cylinder block 16 and arranging a crankcase 15 in front of the cylinder block 16, by juxtaposing a cylinder formed in the cylinder block 16 in the vertical direction toward the longitudinal direction, and is formed by opening an outlet 36 of an exhaust port on one side of a cylinder head 17, and has an exhaust manifold 35A communicating the outlet 36 of the exhaust port with an exhaust discharge port 37. This exhaust manifold 35A is composed of: a first exhaust passage 39A extending in the vertical direction for collecting exhaust gas exhausted from the outlet 36 of the respective exhaust ports; and a second exhaust passage 40A adjacently extending in the vertical direction to this first exhaust passage 39A, and a catalyst 42 unit A is arranged in the middle of this second exhaust passage 40A.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2007179551-A (JP)
Title: Method and apparatus for backup and recovery using storage based journaling
Inventor: YAMAKAMI KENJI
IPC: G06F12/16
Filed: 2007-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To enable a storage system to perform a data storage service for a user to execute an application.  <P>SOLUTION: A storage system maintains a journal of a plurality of journal entries and at least one snapshot of one or more data volumes. By assigning a unique sequence number to each journal and snapshot in generated order, it is easy to find a journal which can be applied to the snapshot. A technique is described for detecting an overflow condition of running out of journal space, and recovering the journal space.  <P>COPYRIGHT: (C)2007,JPO&INPIT
Patent JP-2008168197-A (JP)
Title: Manufacturing method of organic compound fine particle
Inventor: MATSUYAMA KAZUO
IPC: B01D9/02
Filed: 2007-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a new organic compound fine particle which is not ever available conventionally.  <P>SOLUTION: This manufacturing method of an organic compound fine particle involves the following liquid mixing step: circulate a first fluid and a second fluid in the state of an inclusion through mixing pores 22 arranged continuously in a fluid contact part 21 so as to mix the fluids in a laminar flow and prepare a mixed solution in which the dispersed deposition of the organic compound fine particle is seen. In this step, the flow direction in which the first fluid heads for the fluid contact part 21, is made to coincide with the extension direction of the mixing pore 22, and the second fluid is made to flow to the fluid contact part 21 from a plurality of directions and then, each flow direction in which the second fluid heads for the fluid contact part 21, is differentiated from a direction in which the mixing pore 22 extends.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008169079-A (JP)
Title: Method for refining metal silicon
Inventor: INOUE KOICHIRO
IPC: C01B33/037
Filed: 2007-01-11
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method industrially and inexpensively refining metal silicon by which the concentration of contained uranium can be very advantageously reduced.  <P>SOLUTION: Metal silicon containing impurities is finely pulverized and minute particles having a particle diameter smaller than 5 μm are removed by classification from the pulverized powder to collect metal silicon particles having a particle diameter of ≥5 μm. The metal silicon particles freed of the minute particles are immersed in dilute hydrofluoric acid and hydrogen peroxide is added to the dilute hydrofluoric acid to carry out acid cleaning treatment, and then the metal silicon particles are washed and dried.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008172568-A (JP)
Title: Receiver
Inventor: YOKOSHIMA HIDEKI
IPC: H03G3/20
Filed: 2007-01-12
Abstract: <P>PROBLEM TO BE SOLVED: To provide a receiver in which optimal gain setting and DC offset correction can be realized and thereby signal quality of a received signal can be improved.  <P>SOLUTION: The receiver includes a gain variable amplifier 103 which regulates a receiving signal level by using gain depending on a control signal, a receiving signal level measuring circuit 119 which measures a receiving signal level, a DC offset estimating circuit 118 which measures the DC offset of the receiving signal to set an estimate value, DC offset correcting circuits 112 to 115 which correct the DC offset of the receiving signal by using the estimate value which has been set, and a control circuit 120 which sets measuring times of the receiving signal level measuring circuit and DC offset estimating circuit depending on the receiving signal level measured by the receiving signal level measuring circuit to output a control signal S121 to the gain variable amplifier 103 so as to set the receiving signal at a preset level.  <P>COPYRIGHT: (C)2008,JPO&INPIT