baber/WOPTO huggingface dataset:
Patent JP-2008510940-A (JP)
IPC: F16H9/18
Filed: 2005-08-11
Abstract: The invention relates to an automatic transmission in the form of a conical disk flexible drive transmission comprising input-side and output-side conical disks and enveloping means for transmitting torque. The enveloping means are embodied as a plate link chain with optimised articulation areas.
Patent JP-2008514601-A (JP)
Title: 特異的α２アドレナリン作動剤としての４−（フェニルメチルおよび置換フェニルメチル）−イミダゾール−２−チオン
IPC: A61P25/18
Filed: 2005-09-07
Abstract: 式1：                   式１ ［式中、記号は明細書中に定義する通りである］ で示される化合物は、α 2 アドレナリン受容体作動剤である。いくつかの本発明化合物は、α 2A アドレナリン受容体よりもα 2B および／またはα 2C アドレナリン受容体に特異的または選択的である。さらに、いくつかの本発明化合物は、心臓血管および／または鎮静作用を有さないかまたは最小限に有するにすぎない。式1で示される化合物は、α 2 アドレナリン受容体作動剤による処置に応答する疾患の処置および／または症状の緩和のために、ヒトを含む哺乳動物の処置剤として有用である。顕著な心臓血管および／または鎮静作用を有さない式1で示される化合物は、副作用は最小限に止めて痛みおよび他の病態を処置するのに有用である。
Patent JP-2008516477-A (JP)
Title: ビデオ圧縮システム
IPC: H04L47/80
Filed: 2005-10-05
Abstract: 【課題】   【解決手段】システムは、データストリーム内のキーフレームを、キーフレームおよびデルタフレームとして符号化することに関する。総ての符号化されたキーおよびデルタフレームを含むデータストリームが生成され、この生成されたデータストリームは、要求信号を受信した後にストリーム内に生じた最初のキーフレームと以降のデルタフレームとともに送信される。キーフレームは、データストリームの要求信号を受信した直後にストリーム内に配置されたとき、送信されたデータストリーム内に挿入される。 【選択図】図５
Patent JP-2008517629-A (JP)
Title: Ｎａｖ１．８の短い干渉核酸阻害のための組成物および方法
IPC: C12N15/113
Filed: 2005-10-26
Abstract: 本発明は、Ｎａ ｖ １．８ナトリウムチャネル遺伝子からｍＲＮＡのＲＮＡｉ誘導性の分解を引き起こす、一本鎖、または二本鎖のいずれかの短い干渉核酸；このような短い干渉核酸を含む薬学的組成物；このような短い干渉核酸を含む組み換えベクター；ｍＲＮＡの翻訳を阻害するための方法；ポリペプチドの発現を阻害するための方法；細胞における膜電位をブロックするための方法；細胞におけるナトリウム電流をブロックするための方法；および、慢性疼痛を阻害するための方法を提供する。
Patent JP-2008518364-A (JP)
Title: 携帯端末におけるデータの管理方法及び装置
IPC: H04M11/00
Filed: 2005-10-27
Abstract: バックアップ及び復元サービスのための方法及び装置が提供される。バックアップ及び復元の機能性は、紛失した携帯端末から人事データを削除する能力と同様に、フリーとベースのプロビジョニング(fleet-based provisioning)を使用する能力を提供する。復元はこのシステムを使うことが可能なことから、携帯端末が復元され、又は新たな携帯端末に置き換わるならば、そのアドレスブックは容易に復元/転送されることが可能である。
Patent JP-2008518612-A (JP)
IPC: C12N15/09
Filed: 2005-11-07
Abstract: The present invention provides microbial strains, in particular yeast strains, that produce at least 0.1 mg per g biomass dry weight of a sphingoid base. The present invention further provides a method to obtain sphingoid base-producing microbial strains comprising incubating a population of microbial cells in the presence of a suitable concentration of a toxin, selecting cells that are resistant against said toxin, and isolating cells out of the toxin-resistant cell population that produce at least 0.1 mg per g biomass dry weight of the sphingoid base of Formula I. Optionally, the method further comprises subjecting a population of toxin-resistant microbial cells that produce at least 0.1 mg per g biomass dry weight of the sphingoid base of Formula I to DNA-mediated transformation with a polynucleotide encoding an enzyme of the sphingolipid metabolic pathway. The present invention further provides a polypeptide having dihydroceramide desaturase activity obtainable form Pichia ciferrii.
Patent JP-2008519138-A (JP)
Title: インクジェット組成物
IPC: B41M5/00
Filed: 2005-10-12
Abstract: 本発明は、インクジェット組成物を提供する。当該インクジェット組成物は、アニオン性染料と、少なくとも１つの顔料と、酸性液体定着剤とを含み、この場合、酸性液体定着剤は、少なくとも１つのカチオン性成分を含む。また、インクジェットプリンタを用いて画像を印刷する方法も提供する。また、インクジェット組成物を含むインクジェットプリンタも提供する。 【選択図】なし
Patent JP-2008519700-A (JP)
Title: 滑りやすい分子膜を利用して固体表面にナノ構造を選択的に位置又は整列させる方法
IPC: H01L29/06
Filed: 2005-11-11
Abstract: 本発明は、固体表面にナノ構造を選択的に整列する方法に関し、さらに詳しくは、固体表面を滑りやすい分子膜にパターニングした後、吸着させようとするナノ構造が滑りやすい分子膜から固体表面へとスライドしながら、固体表面に直接吸着される方法に関する。本発明によると、ナノ構造を固体表面に選択的に位置及び整列させることができ、ナノ構造が固体表面に直接接触するため、ナノ構造及び固体表面の汚染を防止することができる。また、本発明による多重ナノ構造を作ってセンサなどとして活用することができ、ＤＮＡ、蛋白質、セルなどのバイオ構造を所望の形に培養することができる。
Patent JP-2008529026-A (JP)
Title: 特別形状を有する可変コンデンサ、このようなコンデンサを備えるジャイロ計および該コンデンサを備える加速度計
IPC: G01C19/56
Filed: 2006-02-01
Abstract: 歯が設けられた少なくとも二つのインターデジタル化されたコムを備え、一つのコムの他のコムに隣接する歯の端部の断面積が、他のコムから離れた歯の端部の断面積より大きい可変コンデンサであって、ジャイロ計および加速度計に用いることができる。 【選択図】図２
Patent JP-2008539327-A (JP)
Title: ガラス安定性、ガラス形成能力およびミクロ組織微細化の向上
IPC: C22C45/02
Filed: 2006-02-07
Abstract: 本発明は、鉄基ガラス形成合金およびCr-Mo-Wを含む鉄基ガラスへのニオブの添加に関する。より詳細には、本発明は、はるかに高い温度で安定であり続けることができるガラス形成をもたらし、ガラス形成能力を増大させ、ナノコンポジット構造の失透後の硬さを増大させるように、結晶化の性質を変化させることに関する。本発明の鉄合金組成物は、(a)約40〜65原子%の鉄と、(b)Ti、Zr、Hf、V、Ta、Cr、Mo、W、Mn、Niおよびこれらの混合物からなるグループから選択された約5.0〜55原子%の少なくとも1種の金属と、(c)約0.01〜20原子%のニオブと、を含む。
Patent JP-2008532942-A (JP)
Title: 内皮細胞接着または遊走を促進する方法および組成物
IPC: C12N5/07
Filed: 2006-02-24
Abstract: 本願発明は、内皮細胞の接着または遊走を促進する方法、組成物およびデバイスを提供する。
Patent JP-2008182225-A (JP)
Title: Wafer level package with die receiving through hole and its method
Inventor: YANG WEN-KUN
IPC: H01L23/12
Filed: 2008-01-04
Abstract: <P>PROBLEM TO BE SOLVED: To provide fan-out wafer level packaging with good CTE performance and reduction size.  <P>SOLUTION: One structure of a package comprises a through hole 4 for receiving a die 6, a substrate 2 with a connecting through hole 22 structure and a first contact pad 10, the die 6 arranged in the through hole 4 for receiving the die 6, a peripheral material formed under the die 6 and filling the space between the die 6 and the sidewall of the through hole 4 for receiving the die 6, a dielectric layer 12 formed on the die 6 and the substrate 2, a redistribution layer (RDL) 14 formed on the dielectric layer 12 and connected with the first contact pad 10, a protective layer 26 formed on the RDL 14, and a second contact pad formed on the lower surface of the substrate 2 and under the connecting through hole 22.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2009163532-A (JP)
Title: Electronic device
Inventor: ISHIGUCHI FUSAO
IPC: G06F11/00
Filed: 2008-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide an electronic device which downloads a program for controlling a main body and a program for updating control data, which surely recovers from an update failure to improve reliability.  <P>SOLUTION: A DVD recorder 1 includes a main block 3, a receiving part 6, an operation part 8, and an update control part 9. When a receiving control part 61 receives a new update program while a main control part 31 is executing a main program of the main block 3, the update control part 9 executes a program loader of a PL memory 92 to install the program to each part 30, 60. When a reset button 83 is long-pressed, a CPU 91 executes an initialization program in a IPL memory 93. According to this, the program at factory shipping, which is recorded in a recording medium 32, is installed to each part, and the main control part 31 thereafter activates the main program. The memories 30, 92, and 93 are constituted by different chips.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009166523-A (JP)
Title: Hydraulic-brake control device
Inventor: YAMADA AKIRA
IPC: B60T8/00
Filed: 2008-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a hydraulic-brake control device capable of maintaining a desired braking force even if anti-lock brake is activated in a state in which a brake assist control is functioned.  <P>SOLUTION: The hydraulic-brake control device includes wheel cylinders for giving wheels a braking force when receiving supply of an operating fluid pressurized according to an operating amount of a brake operation member by a driver, a power hydraulic pressure source for pressurizing the operating fluid to be supplied to the wheel cylinders, an anti-lock brake for temporarily intercepting the supply of the operating fluid to the wheel cylinders so as not to lock the wheels, and a brake control portion for performing a predetermined pressure-increase process upon activation of the anti-lock brake when the operating fluid having the pressure increased by the power hydraulic pressure source is supplied to the wheel cylinders.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009165374-A (JP)
Title: Hydroponics facility and hydroponics method each using ozone water,
Inventor: ISHII MASAHISA
IPC: A01G7/00
Filed: 2008-01-15
Abstract: <P>PROBLEM TO BE SOLVED: To provide hydroponics facilities using ozone water, making plants hardly be damaged, enabling sterilization of nutrient solution with ozone, and reducing change in the component of the nutrient solution in sterilization of the nutrient solution with the ozone: and to provide a hydroponics method.  <P>SOLUTION: The hydroponics facilities 100 are provided with a cultivation bed 1 on which the plant is placed, a nutrient solution tank 2 which reserves the nutrient solution to be supplied to the cultivation bed 1, an electrolytic type ozone water generation device 3 with which ozone water in a prescribed concentration is generated from raw water to supply the generated ozone water to at least either of the nutrient solution tank 2 or the cultivation bed 1.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009169674-A (JP)
Title: Method, system and program for traffic congestion detection
Inventor: YAMASHITA KOJI
IPC: G07B15/00
Filed: 2008-01-16
Abstract: <P>PROBLEM TO BE SOLVED: To provide a traffic congestion detection means that can detect a local event leading to shorter delay from the occurrence of the event to detection.  <P>SOLUTION: An ETC on-vehicle equipment 10A measures received electric field intensity from received power when question signals transmitted at constant time intervals from a road side antenna unit 30 when proceeding into an event detection section and transmits ETC-ID and the received intensity (value) of the electric field which is measured as a responding signal to a road side processor 50 via the road side antenna unit 30. The road side processor 50 specifies the position of a vehicle by referring to the electric field intensity distribution data in the road side antenna unit 30 which is installed in the event detection section registered beforehand from the received ETC-ID, ID acquired time and the intensity value of received electric field. Then, the average speed of the vehicle in the event detection section is calculated from a plurality of electric field intensity information in the same ETC-ID and when the average speed is slower than a threshold value, judgement of a traffic congestion is made.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2008267785-A (JP)
Title: Pipe connecting socket and air conditioner equipped with the same
Inventor: KWAK JI HO
IPC: F24F1/32
Filed: 2008-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a pipe connecting socket and an air conditioner equipped with the pipe connecting socket for connecting a first pipe to a second pipe.  <P>SOLUTION: The air conditioner is equipped with the pipe connecting socket formed in a tube shape to connect the first pipe to the second pipe and has a first enlarged tube and a second enlarged tube by enlarging both ends so that one end of the first pipe and one end of the second pipe are inserted and connected to each other. Consequently, since there is no need to form a constitution for connection at the second pipe, the second pipe can be cut and freely adjusted in length.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009168196-A (JP)
Title: Distributor
Inventor: NAKAMURA KENICHI
IPC: F25B41/00
Filed: 2008-01-18
Abstract: <P>PROBLEM TO BE SOLVED: To manufacture an inexpensive distributor capable of obtaining excellent distribution characteristics.  <P>SOLUTION: In the distributor, a honeycomb-shaped pipe A comprising a plurality of thin pipes b accumulated inside a thick pipe a is used, and one end side of the thick pipe a is thinly wrung to form a main stream part. By thinly wringing the thick pipe a, the thin pipes b are fixed to the thick pipe a. An inlet side of the main stream part composed of the thick pipe and outlet parts of the thin pipes fixed to the other end side of the thick pipe are designed to connect other pipes.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009169900-A (JP)
Title: Base material sheet for rfid, and rfid tag manufacturing method
Inventor: MINEMURA SHIGEKI
IPC: G06K19/077
Filed: 2008-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a base material sheet for RFID tags which allows antenna length to be flexibly adjusted in accordance with operating environment, allows the material cost and the processing cost thereof to be reduced, and is adaptive to products to be produced by a method of production of multiple models in smaller lots.  <P>SOLUTION: On the base material sheet, a linear conductive member is disposed in a shape including a plurality of bent parts and a connecting part for connecting the bent parts, and the base material sheet for the RFID tags with an IC card arranged at a prescribed position is blanked, thereby the RFID tag is obtained. By changing a size of the blanking, the length of an antenna can be easily adjusted, the RFID tag is adaptive to the products to be produced by a method of production of multiple models in smaller lots, and material cost and processing cost are reduced more than in a method using the conventional etching, conductive paste or the like.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009174573-A (JP)
Title: Toroidal continuously variable transmission
Inventor: TOYODA TOSHIRO
IPC: F16H57/021
Filed: 2008-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a structure capable of increasing the usable range of an axial side surface of an output side disk 8a, and increasing the adjustable range of gear ratio in a toroidal continuously variable transmission.  <P>SOLUTION: Both end surfaces in the axial direction of the output side disk 8a are abutted against a pair of thrust raceway rings 25b, 25b constituting a pair of thrust angular ball bearings 11a, 11a arranged in both sides in the axial direction of the output side disk 8a so that the axial dimension of the output side disk 8a is limited. A radial position of a hollow rotating shaft 27 is limited by both thrust raceway rings 25b, 25b. The radial position of the output side disk 8a which is externally fitted into the hollow rotating shaft 27 is limited by limiting the radial position. By this constitution, rigidity in both the ends in the axial direction of the output side disk 8a is enhanced, and the usable range is increased as a traction surface, and thus the above problem is solved.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009174393-A (JP)
Title: Control apparatus for internal combustion engine
Inventor: HARIMA KENJI
IPC: F02D45/00
Filed: 2008-01-23
Abstract: <P>PROBLEM TO BE SOLVED: To provide a control apparatus for an internal combustion engine equipped with a turbocharger, capable of preventing deactivation of a catalyst while satisfying a request for driving the turbocharger.  <P>SOLUTION: It is determined whether a request for a turbo flow mode is issued or not (step 100). It is determined whether there is a possibility that the catalyst 28 may be deactivated or not (step 104). More specifically, it is determined whether a catalyst IN gas temperature Tc is above a predetermined value B or not. Used as the predetermined value B is a value set in advance as the maximum value of the catalyst IN gas temperature at which the catalyst 28 is deactivated. As a result, when it is determined that there is a possibility that the catalyst 28 may be deactivated due to the turbo flow mode, a retard amount in an ignition timing retard correction is determined (step 106). An ignition timing C is calculated (step 108 to step 114). It is permitted to switch to the turbo flow mode (step 116).  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2008201777-A (JP)
Title: Wound-healing promoter prepared from peptide
Inventor: OKAMOTO OSAMU
IPC: A61P17/02
Filed: 2008-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a wound-healing promoter in which epidermal adhesion ability of dermatopontin is elucidated and the active peptide is identified.  <P>SOLUTION: In the wound-healing promoter prepared from peptide, the amino acid sequence of human dermatopontin is GQVVVAVR or PQGQVIVAVRS. The cell adhesion-active peptide of the dermatopontin enables application to treatment of recalcitrant tumor as the wound-healing promoter. It is expected that the application of the present invention is not only limited to skin tumor, but applied also to general ulcers such as stomach ulcer.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2009175018-A (JP)
Title: Infrared sensor
Inventor: MOTAI NOBORU
IPC: G01J1/02
Filed: 2008-01-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide an infrared sensor for achieving a low cost of an optical lens and an infrared incident filter by sufficiently holding airtightness in a package.  <P>SOLUTION: The infrared sensor includes a cap having a window part at a position opposed to a sensor chip by being fixed on a stem while storing the sensor chip, a Fresnel lens arranged in the cap so as to block the window part, an inner for forming a through-hole passing an infrared ray from a detection object on the center part by being arranged to be fitted to the inside of the cap so as to push the Fresnel lens to the window part side, and the infrared incident filter adhered to the inner by blocking the through-hole of the inner.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009177682-A (JP)
Title: High frequency amplifier
Inventor: TERAGUCHI TAKAYUKI
IPC: H03F3/72
Filed: 2008-01-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a high frequency amplifier that is compact and easily manufactured.  <P>SOLUTION: In the high frequency amplifier 1 which is connected between a power supply potential Vcc and a ground potential GND, amplifies an inputted high frequency signal f1 and outputs it as an output signal f2, an amplification transistor T1 and a load transistor T2 are provided in series. A collector of the amplification transistor T1 is connected to the power supply potential Vcc, the high frequency signal f1 is input to its base, and its emitter is connected to a collector of the load transistor T2. Furthermore, an emitter of the load transistor T2 is connected to the ground potential GND. Then, the output signal f1 is extracted from the collector of the amplification transistor T1. The similar effect to a case where a resistor and a capacitor are provided can be obtained by parasitic resistance and parasitic capacitance of the load transistor T2.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009182068-A (JP)
Title: Mask for array and method of manufacturing the same
Inventor: KOBAYASHI YOSHIHIRO
IPC: H01L21/60
Filed: 2008-01-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide a mask for array capable of mounting solder balls with good precision even to a chip package with the narrowed intervals of electrodes.  <P>SOLUTION: A mask for array mounts solder balls 2 at predetermined positions on a workpiece 3 by depositing the solder balls 2 in through-holes 12 corresponding to a predetermined array pattern. The lower surface of the mask body 10 includes a protrusion 15, and the diameter of the protrusion 15 is formed such that it is enlarged toward the lower surface of the mask body 10. Thereby, the tip of the protrusion 15 can correspondingly abut between electrodes 6 with fine pitches, while firmly securing the strength at the root of the protrusion 15, so the solder balls 6 can be reliably mounted at the predetermined positions.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009160348-A (JP)
Title: Pants-type disposable diaper
Inventor: SASAKI JUN
IPC: A61F13/496
Filed: 2008-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a pants-type disposable diaper, wherein end parts in the longitudinal direction of an absorbent body and both side parts near the end parts are successfully fitted to a wearer, leak prevention performance is excellent, a waistline part is flexible, and fitting property and touch feeling are favorable.  <P>SOLUTION: The pants-type disposable diaper 1 has the first and second waist part elastic members 23A, 23B arranged between an outer layer sheet 21 and an inner layer sheet 22 constituting an external wrapper material 2. The elastic members 23A are arranged in areas where end parts of an absorbent core 34 in the longitudinal direction are positioned over the whole width of the external wrapper material 2 across the absorbent core 34. Several lines of the elastic members 23B are arranged in areas closer to a crotch part side than the areas where the elastic members 23A are positioned. The elastic members 23B are fixed to the both sheets 21, 22 at inner and outer fixing parts 28 but not fixed to the both sheets 21, 22 at parts between the fixing parts 27, 28. The elastic members 23B are not arranged or do not substantially exhibit elastic retractility between the inner fixing parts 27.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009182903-A (JP)
Title: High-frequency module
Inventor: GOI TOMOYUKI
IPC: H01P1/205
Filed: 2008-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a miniaturized and high performance high-frequency module while maintaining heat dissipation and operation stability of a power amplifier.  <P>SOLUTION: The high frequency module 1 includes a multilayer substrate 10, a power amplifier IC11 mounted on an upper surface of the multilayer substrate 10, and first and second filters 12, 13 formed in an inner layer of the multilayer substrate 10. The first and second filters 12, 13 are disposed almost just under the power amplifier IC11. The first filter 12 has a large number of ground vias 26 each of which serves as a thermal via for the power amplifier. A ground via 21 for coupling reduction is disposed between the first and second filters 12, 13 and the ground via 21 for coupling reduction also serves as the thermal via for the power amplifier. This results in not only reduction of the total number of via holes, but also downsizing of the high frequency module.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009185499-A (JP)
Title: Panel installation method in curtain wall
Inventor: ISHII HISASHI
IPC: E04B2/96
Filed: 2008-02-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide a panel installation method for adjusting a position of a panel supporting device before installing a panel, then maintaining the position of the panel supporting device invariably even during and after the installation of the panel to dispense with the adjustment of the position of the panel after the installation, and improving precision in the installation of the panel in a curtain wall structure manufactured by a frameless construction method.  <P>SOLUTION: This panel installation method comprises the first procedures for installing a tensile force introducing and adjusting device 7 for introducing tensile force into a suspension rod 5 being substantially continuous in the vertical direction, the second procedures for introducing the tensile force being equivalent to the total weight of the panel P and shared by the suspension rod 5 by the tensile force introducing and adjusting device 7, and the third procedures for installing the panel P while releasing the tensile force being equivalent to the weight of the installed panel from the suspension rod 5 by the tensile force introducing and adjusting device 7 every time the panel P is installed.  <P>COPYRIGHT: (C)2009,JPO&INPIT
Patent JP-2009189144-A (JP)
Title: Transformer and switching power supply unit having the same
Inventor: UNNO HIROSHI
IPC: H02M3/28
Filed: 2008-02-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide a switching power supply unit reducing overall cost and size of the device by reducing the ripple output.  <P>SOLUTION: A transformer includes a primary winding Np and secondary windings Ns1, Ns2. Further, the transformer includes a plurality of magnetic legs L1, L2 with a gap at a core constituting the transformer and a magnetic leg with no gap. The primary winding is wound around the magnetic leg with the gap and the secondary winding is wound around the magnetic leg with the core gap. A ratio of equivalent excitation inductance to equivalent excitation inductance of the transformer is made equal to a ratio of a voltage of an equivalent winding to that of an equivalent winding during a period when a switching device is on.  <P>COPYRIGHT: (C)2009,JPO&INPIT