baber/WOPTO huggingface dataset:
Patent JP-2006504028-A (JP)
Title: 油圧作動式制動排気弁
IPC: F01L9/10
Filed: 2003-10-11
Abstract: 軸方向に上下可動かつ軸を中心に回転可能な、弁棒（８）によって弁ケーシング（９）内に可動支持された２サイクル大型ディーゼル機関の排気弁であって、前記弁ケーシングに持ち上げ作動装置、もどし装置、回転装置ならびに、弁開放運動の終端を制動する制動装置が配備され、該制動装置は弁棒（８）と結合された制動ピストン（２１）を有し、該制動ピストンは前記持ち上げ作動装置の作用下で排気弁の開放運動終了間際に流体で満たされた対応する制動チャンバ（２２）内に嵌入し得るように構成した排気弁において、排気弁の開放運動を制動する制動ピストン（２１）が排気弁開放方向において制動チャンバ（２２）内に嵌入するピストン前方端面から出発する少なくとも１本の流れ路（３１）を具備し、該流れ路が半径方向とは異なる方向に延びて制動ピストン（２１）の外周で開口することにより、エネルギ損失を回避し、それにもかかわらず確実な弁回転を達成することができる。
Patent JP-2006504326-A (JP)
Title: 通信網におけるデータ測定システムおよびその測定方法
IPC: H04W56/00
Filed: 2003-10-28
Abstract: 【課題】  本発明は、汎地球位置システムから提供する時間情報を移動通信網とデータ通信網とがそれぞれ受信して移動通信網とデータ通信網の無線環境及びデータ環境を１つの時間軸上で測定し分析することのできる通信網におけるデータ測定システムを提供する。 【解決手段】  本発明に係る通信網におけるデータ測定システムは、衛星航法システム（ＧＰＳ）から受信された時間情報を提供する衛星航法システム受信器と、移動局の移動通信サービスを支援する基地局と前記移動局のデータ通信サービスを支援するパケットデータサーブノード（ＰＤＳＮ）間の通信プロトコルおよび通信環境情報を前記衛星航法システム受信器が提供する時間情報と共に収集して提供する第１パケットデータ収集装置と、前記移動局の無線通信環境、データ通信環境および移動通信プロトコルのうち少なくとも１つを前記衛星航法システム時間情報と共に前記移動局から伝達され、前記移動局のパケットデータ通信環境およびデータ通信プロトコルのうち少なくとも１つを前記時間情報と共に前記第１パケットデータ収集装置から伝達され、１つの時間軸上で測定および分析する移動局-パケットデータサーブモニターリング装置（ＭＰＭＳ）とを含む。
Patent JP-2006511323-A (JP)
Title: 一つのあごセットの複数のツールのアタッチメント装置
IPC: E02F3/96
Filed: 2003-11-12
Abstract: 破壊装置用の複数のツールのアタッチメント装置は、アダプターと、該アダプターに取り付けられる自在ボディであって、回転可能に取り付けられる回転可能な一対のあごを備える自在ボディを含む。各あごは、ツールアタッチメントの選択的なセットの一つを取り付けるためのツールキャリアを含む。各ツールアタッチメントは、装置用の別個のツールを形成する。該ツールは、クラッカー、粉砕機、木材用鋏、鉄／レールクラッカー及びグラップルを含み得るが、これに制限されるものではない。
Patent JP-2006514450-A (JP)
Title: ユーザへの位置情報の提供
IPC: H04W64/00
Filed: 2003-11-20
Abstract: 本発明はユーザ（１００）に位置情報を提供するためのシステムに関し、同システムはユーザが位置情報を利用できるようにするユーザデバイス（１１０）を有し、このユーザデバイス（１１０）はユーザによって実質的に物理的遠隔位置（１３０，１４０）のほうに向けられて、当該遠隔位置に対応する情報を選択するように構成される。ユーザデバイスは当該デバイスの現在位置（１２０）及び当該ユーザデバイスが実質的に向けられる方向を特定することによって当該デバイスの遠隔位置（１３０，１４０）を特定するように構成されうる。また本発明はユーザに位置情報を提供する方法に関する。
Patent JP-2006511647-A (JP)
Title: 軽油供給材料流からの窒素含有汚染物質の除去方法
IPC: B01J21/06
Filed: 2003-12-12
Abstract: 本発明は、石油処理プラントの流動分解触媒または蒸留域から得られる高分子量石油供給原料から窒素およびイオウ含有不純物を除去することを指向する。本発明の方法は、第１に窒素およびイオウ含有化合物をその中に有するＣ １２ 以上の高級炭化水素石油供給材料を少なくとも５００μモル／ｇのルイス酸性度を与えるのに効果的な量の金属原子を有するシリカマトリックスを含んでなる多孔質の粒子状吸着剤と接触させ、次にこの生成供給材料を接触水素化脱硫で処理して、低イオウおよび低窒素含量の炭化水素燃料を製造することを含んでなる。
Patent JP-2006509941-A (JP)
Title: データ送信装置
IPC: E21B47/12
Filed: 2003-11-28
Abstract: 【解決手段】  本装置は、地表（１７）から伸張し、且つ少なくとも１つの導電性管状要素（２１、２５）が配備された空洞（１３）を備えている設備に関する。本装置は、作業及び／又は測定アッセンブリ（５）を支持するための単鎖平滑ケーブル（３）を備えており、前記ケーブルは、導電性であり、３００ｄａＮを超える破壊強度を有しており、前記管状要素（２１、２５）内に配置されている。ケーブル（３）の表面は、少なくとも部分的には、前記管状要素（２１、２５）から電気的に絶縁されている。本装置は、電気信号及び／又は電磁信号を送受信するための送信器手段（９、１１）と受信器手段（９、１１）を含んでおり、前記手段は、表面（１７）に近接して、そして空洞（１３）内に配置されており、第１には、ケーブル（３）に、第２には、管状要素（２１、２５）及び／又は地層（１９）に、電気的に接続されている。本発明は、情報の送信と、油井内の工具の制御に適用することができる。
Patent JP-2006190781-A (JP)
Title: Semiconductor device
Inventor: OKUZUMI TETSUYA
IPC: H01L21/822
Filed: 2005-01-05
Abstract: <P>PROBLEM TO BE SOLVED: To solve the problem that a semiconductor device is treated as a defective product even if a main LSI chip is non-defective because the sub-LSI in failure cannot be solely replaced when only the sub-LSI chip fails.  <P>SOLUTION: This device is provided with the main LSI chip A having a built-in changeover switch 2 and a plurality of sub-LSI chips B1, B2. All the terminals of the sub-LSI chips B1, B2 are connected to the main LSI chip A, input signals into the sub-LSI chips B1, B2, and output signals from the sub-LSI chips B1, B2 are transmitted via the main LSI chip A, and paths of these signals are controlled by the changeover switch 2 of the main LSI chip A.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006191316-A (JP)
Title: Voice signal processor
Inventor: ANEKOJI FUMIO
IPC: G10L19/00
Filed: 2005-01-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide a voice processor for performing logarithm compression/expansion wherein various signal processing functions are efficiently added.  <P>SOLUTION: In the case of μLaw compression input, an approximation logarithmic transformation processing is carried out. This processing is provided to carry out the bit inversion of the μLaw compression value, to set MSB as "0", and to calculate an approximation μlog value. Various basic calculation is carried out to the converted approximation μlog value. As for the approximation μlog value, the multiplication processing of a linear value is calculated by operating addition processing, and the division processing of the linear value is calculated by operating substraction processing, and the square processing of the linear value is calculated by operating one bit right shift, the square root of the linear value is calculated by operating one bit left shift, and the double precision of the linear value is calculated by adding "16". Then, the result is outputted so that the μLaw compression output is obtained.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006191337-A (JP)
Title: Gateway device for transferring message between buses and network system using the device
Inventor: MABANA ICHIJI
IPC: B60R16/023
Filed: 2005-01-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide a gateway device for properly transferring an emergency message and a network system using the device.  <P>SOLUTION: The gateway device 10 for transferring a message between a plurality of networks is provided with a transfer control means TCON for transferring a normal message MES received from a transmission origin network to a transmission destination network in the order of reception, and for, when the message received from the transmission origin network is made to correspond to an emergency message UMES, transferring the emergency message to the transmission destination network prior to the received normal message. The gateway device transfers the received emergency message prior to the received normal message in a stand-by status for the order of transfer.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006193170-A (JP)
Title: Label affixing device
Inventor: TADA KAKUTARO
IPC: B65C9/18
Filed: 2005-01-12
Abstract: <P>PROBLEM TO BE SOLVED: To provide a label affixing device capable of efficiently affixing a label having information on a member or the like to a green tire or the like with good accuracy in a tire manufacturing process or the like.  <P>SOLUTION: A suction head 6 sucks a label 2 on the upstream side in the feeding direction of a feeding direction changing unit 5 of a label feeding path, and moves over the feeding direction changing unit 5 in the feeding direction synchronously with the label 2 in a sucked state. A label mount 3 is bent by the feeding direction changing unit 5 and moved to the side opposite to the surface with the label 2 provided thereon. The label 2 is peeled from the label mount 3 by the feeding direction changing unit 5, and the label 2 is affixed to the predetermined position by the actions of a synchronous working rod 18 and a working rod 20.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006195339-A (JP)
Title: Map display device
Inventor: YAMAZAKI SHIGERU
IPC: G06T17/05
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a map display device capable of displaying an image of a building further realistic than heretofore.  <P>SOLUTION: The map display device can three-dimensionally display the image of building in the display portion by using a map database accumulated with the data of building in a state that the types of building are identifiable. The map display device is equipped with a control means 1 which performs the control for setting the height of one story in the image of building to the different heights according to the types of the building.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006201284-A (JP)
Title: Optical scanner and image forming apparatus
Inventor: SAGAWA NORIMITSU
IPC: G02B26/10
Filed: 2005-01-18
Abstract: <P>PROBLEM TO BE SOLVED: To provide an optical scanner and an image forming apparatus in which the heat generated in a light deflector is hardly conducted to an optical housing and other optical elements without complicating the configuration of the light deflector.  <P>SOLUTION: The light deflector 120 is composed so that the light deflector is made contact directly with a base plate 123 of the light deflector only at base plate fixing parts 124 of the optical housing 110, and the light deflector 120 and the optical housing 110 are not made in direct contact with each other at other parts. With this composition, the heat is conducted only from the base plate fixing parts 124 to the optical housing 110 and the heat quantity conducted to the optical housing 110 is reduced.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006201593-A (JP)
Title: Imaging apparatus and its control method
Inventor: KOBAYASHI FUTOSHI
IPC: H04N101/00
Filed: 2005-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To realize a compact imaging apparatus where the eccentricity and the tilt of a lens are reduced without providing a sliding part.  <P>SOLUTION: By arranging 1st and 2nd magnetic bodies 9 and 11 so as to make repulsive force or attractive force act in a direction nearly orthogonal to the moving direction of a holding means 2, play of the holding means 2 and the fitting part 3 of a guide member is put aside without providing the sliding part indispensable in using an elastic member such as a leaf spring.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005145566-A (JP)
Title: Synthetic resin-made pallet
Inventor: YAGUCHI MASARU
IPC: B65D19/32
Filed: 2005-01-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide a synthetic resin-made pallet produced with a good productivity, having a good surface condition and a high strength, in which recycled plastic material used is made not exposed in a surface layer (a skin layer).  <P>SOLUTION: This synthetic resin-made pallet comprises a deck board and a beam. At least part is formed into the skin layer constituting the surface layer and a core layer constituting an inner layer, the core layer occupies 10 to 70 weight% of the whole pallet. The core layer can be formed with the recycled plastic material, and particularly, preferably, with the recycled plastic material having compatibility with a polyolefin resin material. Furthermore, it is preferred that the core layer is formed with the polyolefin resin material having a value of 1,000 to 5,000 Mpa in bending modulus of elasticity.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006208285-A (JP)
Title: Bearing with rotary sensor, and bearing device
Inventor: TAKADA SEIICHI
IPC: F16C41/00
Filed: 2005-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a bearing with a rotary sensor having high precision easy to attach by facilitating manufacture, and to provide a bearing device.  <P>SOLUTION: The bearing with the rotary sensor comprises an inner ring 10a and an outer ring 10b in which any one composes a rotary side race and the other composes a fixed side race, a plurality of rolling bodies 10c arranged between the rotary side race and the fixed side race, a sensor housing 1 attached to the fixed side race including a sensor element 3, and an encoder 5 having another integrated matter of the rotary side race and for a magnetic signal sensed with the sensor element.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006205128-A (JP)
Title: Removal apparatus of trace harmful substance in exhaust gas and its operation method
Inventor: NAGAI YOSHINORI
IPC: B01D53/94
Filed: 2005-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a long-term stable and highly reliable removal apparatus of trace harmful substances in exhaust gas, and its operation method.  <P>SOLUTION: The removal apparatus of trace harmful substances in exhaust gas is disposed with; a denitration device equipped with a denitration catalyst layer having a function of removing nitrogen oxide in exhaust gas in order from the upstream side to oxidize metallic mercury, in an exhaust gas flow channel discharged from a combustion facility; an air preheater for heat-exchanging air for combustion of the combustion facility to exhaust gas; a dust removal device having a bag filter containing oxidation catalysts for metallic mercury; and a desulfurization device for removing sulfur oxide in exhaust gas. The bag filter may be disposed in front of the desulfurization device.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006206001-A (JP)
Title: Led drive device, lighting system and luminaire
Inventor: NAGASE HARUO
IPC: H01L33/00
Filed: 2005-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide an LED drive device, a lighting system and a luminaire having a compact, inexpensive and simple configuration capable of reducing the thermal stress in an LED element and consistently irradiating light.  <P>SOLUTION: An LED drive circuit 2 comprising a DC power source 1, an LED drive circuit 2, and an LED unit 3 consisting of a plurality of LED elements La connected in series performs the shifting operation to the output characteristic with the output power reduced if the detected value of the LED voltage Vf is reduced, reduces both the output voltage V2 and the LED current IL, and suppresses the heat generation of the LED element La.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006187563-A (JP)
Title: Five stop buttons
Inventor: MORITA KENSABURO
IPC: A63F5/04
Filed: 2005-01-04
Abstract: <P>PROBLEM TO BE SOLVED: To reduce the times of depressing stop buttons since the stop buttons have to be depressed about 162 times in a big win concerning a conventional slot machine.  <P>SOLUTION: The stop button (4) has a function of continuously stopping drums A, B, C in order and the stop button (5) has a function of continuously stopping the drums C, B, A in order. When the stop buttons (4), (5) or a changeover button are/is fitted, three-times depression per one play is reduced to once. Consequently, when a player performs selection, the depression times are reduced to be one-third in a normal case and is reduced to be about one-third, i.e., 52 times even in the case of the big win, so that burden on the player is remarkably reduced.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006188028-A (JP)
Title: Repeelable and restickable calendar made of waterproof material
Inventor: SHIMIZU TAKESHI
IPC: B42D5/04
Filed: 2005-01-03
Abstract: <P>PROBLEM TO BE SOLVED: To easily utilize a calendar in bathing by making the calendar out of a material having a waterproofing function.  <P>SOLUTION: In one sheet of the calendar made of a sheet material having the waterproofing function, and having a date indication for one or a plurality of months printed thereon, a repeelable and restickable adhering means is provided on the reverse side.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006213329-A (JP)
Title: Valve paper position right/wrong judging device for bag
Inventor: HASEGAWA YUKO
IPC: B65B57/02
Filed: 2005-02-01
Abstract: <P>PROBLEM TO BE SOLVED: To provide a valve paper position right/wrong judging device for a bag which can realize the right/wrong judgement for the attaching position of a valve paper for the bag at a low cost.  <P>SOLUTION: This valve paper position right/wrong judging device for the bag judges right/wrong of the attaching position of the valve paper which is pasted on the bottom of the bag, and includes a trigger signal generator 4, a camera 5 which is arranged to an upstream photographing position, and an illuminating device 6 which projects an illuminating light to the photographing position from the upstream side of the photographing position. In this case, the trigger signal generator 4 generates a trigger signal by detecting the end of the bag which is carried in the carrying direction at a specified position which is set to a carrying path of the bag. An image processing device 10 photographs the bag by the camera in response to the trigger signal which is generated from the trigger signal generator 4, and acquires a deviation to a shadow which occurs by a step difference between the bag surface and the valve paper from the end of the bag in the acquired bag image, and performs the right/wrong judgement by comparing the deviation and a pre-determined reference value.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006214014-A (JP)
Title: Method for analyzing dissolved impurity in green liquid
Inventor: NISHIJIMA MITSUAKI
IPC: D21C11/04
Filed: 2005-02-01
Abstract: <P>PROBLEM TO BE SOLVED: To establish a method for analyzing a cause of operational abnormalities in an caustification process, resulting from foreign materials dissolved in green liquor by performing the adjustment of pH and analyzing the impurities precipitated at a prescribed pH value.  <P>SOLUTION: This method of analysis is provided by performing the adjustment of pH by adding an acid to the green liquid obtained by dissolving smelt from a recovering boiler with weak liquid, precipitating the impurities in the green liquor at the prescribed pH value, performing the qualitative/quantitative analysis of dissolvable impurities selected among the dissolved impurities in the green and precipitated at the prescribed pH value so as to be able to analyze the concentration of dissolvable impurities in the clear liquor of the green liquor, and also thereby, solving problems quickly by elucidating the position of admixing the impurities regarding to the operational abnormalities such as the reduction of calcined lime purity, the clogging, etc., of a white liquor-filtering device and lime sludge-dehydrating device caused by the foreign materials dissolved in the green liquor, so as to contribute for performing a stable operation.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006212206-A (JP)
Title: Sterilization member for shoes
Inventor: TEZUKA TSUTOMU
IPC: A61L2/26
Filed: 2005-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To provide a sterilization member for shoes, which has a simple structure capable of being easily used and exhibiting an excellent sterilization effect and a deodorizing effect.  <P>SOLUTION: The sterilization member 10 for shoes consist of a plate 12 and a base 16. The plate 12 has a shape (an oval shape, a rounded rectangle) of a track for athletic sports, which is obtained by connecting semicircles to both ends of the short sides of a rectangular shape and is integrally molded of a material having high reflecting ratio against UV and IR. The base 16 integrally molded of a polyurethane material in a rectangular shape are secured to the lower face 12b of the plate 12.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006213577-A (JP)
Title: Inorganic particulate agglomerate and its producing method
Inventor: RI TEISHO
IPC: B82B3/00
Filed: 2005-02-04
Abstract: <P>PROBLEM TO BE SOLVED: To provide an inorganic particulate agglomerate where inorganic particulates can be dispersed in a resin to a primary particle level.  <P>SOLUTION: The inorganic particulate agglomerate is obtained by the steps of obtaining a solidified product by drying a mixed liquid of the inorganic particulates and an inorganic salt, removing the inorganic salt from the solidified product by using a solvent, and drying the resulted product. The inorganic particulate agglomerate is formed by coagulation force between the inorganic particulates where the coagulation force is generated by the drying performed at a temperature that surface fusion between the inorganic particulates is not caused.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006219752-A (JP)
Title: Production method of structure
Inventor: NAKAMURA TAKASHI
IPC: C23C18/20
Filed: 2005-02-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for easily producing a structure which can be used as a mold for nano-imprint.  <P>SOLUTION: The production method of the structure comprises a step wherein a structure 14 is press-bonded to a resin 12 containing a catalyst 13 for an electroless plating reaction and then separated therefrom to transfer the construction of the structure 14 onto the resin 12, a step wherein the structure 15 transferred onto the resin 12 is plated to form a plated product 16 and a step wherein the plated product 16 is separated from the resin 12. The catalyst essentially comprises ions, which are optionally reduced and converted into metals while plating is performed after press-bonding of the structure to the resin. Preferably, the main element of the catalyst is Pd.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006226678-A (JP)
Title: Multi-dimensional gas chromatograph apparatus
Inventor: FURUKAWA MASANAO
IPC: G01N30/30
Filed: 2005-02-15
Abstract: <P>PROBLEM TO BE SOLVED: To easily perform the setting or confirmation of a switching program for automatically changing over the flow of a sample gas or the temperature program of a column oven.  <P>SOLUTION: A chromatogram being the result of first monitoring analysis carried out only by a combination of a first column 4 and a first detector 8 is displayed on the screen of a display part 24 and, when an analyst sets the input of the switching program which shows a period wanting to carry out analysis more in detail by an input part 23 or the temperature program of column ovens 3 and 9 and a cooling trap 12, the set switching program and the set temperature program are displayed on the same time axis repeatedly. By this constitution, the propriety of input setting can be easily confirmed and work efficiency can be enhanced while a setting mistake can be also reduced.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006227089-A (JP)
Title: Antireflection base film
Inventor: KUBO KIMIHIRO
IPC: G02B1/04
Filed: 2005-02-15
Abstract: <P>PROBLEM TO BE SOLVED: To provide an antireflection base film which is used for an optical member and hardly causes birefringence variation due to an external force.  <P>SOLUTION: The antireflection base film is manufactured by molding a resin composition composed of an acrylic resin (a) and a polylactic acid resin (b). The photoelastic coefficient is > -13(×10<SP>-12</SP>/Pa) and is < 12 (×10<SP>-12</SP>/Pa). As regards the relation between birefringence Δn(S) when the film is stretched and stretching magnification (S), the value of inclination K determined by the least square approximation satisfies the following relation; K=Δn(S)/S -8.0×10<SP>-6</SP><K<6.5×10<SP>-5</SP>.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006223148-A (JP)
Title: Fishing rod
Inventor: TANIGUCHI KAZUMA
IPC: A01K87/00
Filed: 2005-02-16
Abstract: <P>PROBLEM TO BE SOLVED: To provide a fishing rod equipped with a butt on the rod end of the main rod, improved in the workability in making a maintenance of or replacing the butt to facilitate joining the butt and the main rod each other.  <P>SOLUTION: The fishing rod has the following construction: A screw 2a to be formed on the rod end of the main rod 2 and a screw 3c to be formed on the joining rod 3B for the butt 3 are integratedly formed, both the screws 2a and 3c being separated into a main rod portion and a butt portion, one of the portions is attached to the rod end of the main rod 2, while the other is attached to the rod end of the butt 3, and the butt 3 is screwed, under attachment to the main rod 2, with a nut element 5 bridged over both of the screws 2a and 3c.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006229454-A (JP)
Title: Gate drive circuit
Inventor: KOJIMA TSUTOMU
IPC: H03K17/687
Filed: 2005-02-16
Abstract: <P>PROBLEM TO BE SOLVED: To solve problems of destruction of switching elements, erroneous turning-on of the switching elements, and switching noise at the same time although the chip size is suppressed smaller.  <P>SOLUTION: The gate drive circuit as one embodiment disclosed herein includes first and second switching elements connected in series between a power terminal and a reference level terminal, and a voltage at a connecting point between the first and second switching elements is applied to a drive switching element. The gate drive circuit generates a control voltage for controlling the impedance of the second switching element on the basis of an ON/OFF signal of the drive switching element, an overcurrent monitoring signal denoting whether or not an overcurrent flows through the drive switching element, and a voltage monitoring signal denoting whether or not an output gate voltage is greater than a threshold voltage of the drive switching element, and applies the control voltage to the second switching element.  <P>COPYRIGHT: (C)2006,JPO&NCIPI