baber/WOPTO huggingface dataset:
Patent JP-2006183351-A (JP)
Title: Locker device
Inventor: KAKIMOTO MASAKI
IPC: E05B49/00
Filed: 2004-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To keep safety of storage in a storage locker 1, in a locker system for remotely controlling locking and unlocking of the storage locker 1 by a host terminal unit 2.  <P>SOLUTION: Various commands are transmitted to a control device 10 of the storage locket 1 from the host terminal unit 2, to execute processing corresponding to the commands by the control device 10. An abnormality detecting timer is started when receiving the command of "unlocking". Communication is recognized as normal when receiving the command of "locking" before the abnormality detecting timer times out. The whole boxes 11 are forcibly locked when the abnormality detecting timer times out without receiving the command of "the locking".  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005525420-A (JP)
IPC: C07C315/02
Filed: 2003-04-23
Abstract: A process for the preparation of 2-[(diphenylmethyl)sulfinyl]acetamide (I) comprising the oxidation of sodium 2-[(diphenylmethyl)sulfenyl]acetate to the corresponding sulfoxide and the derivatization of the latter to amide
Patent JP-2005527049-A (JP)
Title: 下位互換性がある小型化されたチップカードおよび小型化されたチップカード用アダプタ
IPC: G06K19/077
Filed: 2002-05-24
Abstract: 特にレガシーカードリーダもしくはレガシーカードライタにおいて下位交換性を実現するために、本発明によれば、小型チップカードはカード本体と、予め規定された規格に準拠した大きさおよび位置の接面を有する第一接地領域１４を有する。集積回路チップ３６はまず第一に、物理的及び電気的に第二接地領域３８に結合されている。第二接地領域３８における接面の位置は、第一接地流域１４における接面の位置とは異なる。本発明によれば、集積回路チップ３６は第一接地領域１４の接面にも結合されている。
Patent JP-2005527683-A (JP)
IPC: C09D7/61
Filed: 2003-05-22
Abstract: Novel carbon blacks are described which have a volatile content of from about 1.5 to about 3.5 and/or a moisture content of at least 0.5 along with one or more analytical properties. Inks and coating and other compositions are further described which include the carbon blacks of the present invention. Methods of decreasing the cure energy of an ink as well as methods to improve storage stability are further described.
Patent JP-2005534165-A (JP)
Title: 構成素子ベルト・搬送ホイール、構成素子ベルト・搬送システムおよび、構成素子ベルト・搬送システムを運転する方法
IPC: H05K13/02
Filed: 2003-06-02
Abstract: 本発明によれば、構成素子ベルト・搬送ホイール（１）と、構成素子ベルト・搬送システムと、構成素子ベルト・搬送システムを運転する方法とが提供される。この場合、前記搬送ホイール（１）と、該搬送ホイール（１）に配置された、センサに対する相対位置が求められ得るようになっているエンコーダホイール（１４）との間には、剛性的な連結部が存在する。構成素子ベルトを移動させる前記搬送ホイールと、該搬送ホイール（１）の位置を検出するためのセンサおよびエンコーダホイールから成る検出システムとの間の剛性的な連結によって、前記搬送ホイール（１）の位置を、常時、極めて高い精度で検出することが可能になる。構成素子ベルト・搬送システムのスイッチオフ後にも、前記搬送ホイール（１）の絶対位置の決定が可能である。なぜならば、エンコーダホイール（１４）の、２つのエンコーダエレメント（１５）の間の間隔は、前記搬送ホイール（１）の駆動装置および／または所属の伝動装置によって場合によっては生ぜしめられる遊びよりも小さいからである。
Patent JP-2005530951-A (JP)
Title: 流れ分岐装置及びエコロジー弁
IPC: F02C7/232
Filed: 2003-06-25
Abstract: 【課題】 【解決手段】燃料流れ分岐エコロジー弁３５、５９は、エンジンの作動中、燃料を燃料源３１から少なくとも二次ガスタービンエンジン吸入マニホルド２５に選択的に運び且つ、エンジンの作動が停止したとき、燃料を該マニホルドから吸引する。該弁は、燃料源に結合された入口６５と、二次マニホルドに結合された出口６７とを有する流れ分岐弁部分４１を備えている。流れ分岐弁部分は、入口と出口との間の燃料圧力差に応答してのみ燃料の流れを閉塞する状態から燃料が源からマニホルドに流れることのできる状態まで移行する。弁は、また、分岐弁部分の入口と出口との間の燃料の圧力差によってのみ制御され、エンジンが不作動とされたとき、燃料を二次エンジン吸入マニホルドから吸引し、これにより、マニホルドから燃料をパージングし且つ、その後のエンジンの作動中、吸引された燃料をマニホルドに戻すエコロジー弁部分４３を有している。１つの形態において、燃料は、エンジンの作動中、燃料源から専ら二次ガスタービンエンジン吸入マニホルドに運ばれ且つ、エンジンの作動が停止したとき、専ら該マニホルドから吸引される。別の形態において、燃料源からの燃料は、エンジンの作動中、一次吸入マニホルド２３及び二次吸入マニホルド２５の双方に運ばれ且つ、エンジンの作動が停止したとき、双方のマニホルドから吸引される。双方の形態において、エコロジー弁部分は、燃料源と流れを制限する入口との間の燃料の圧力差によってのみ制御され、また、第一の限界位置と第二の限界位置との間にて動き得るようにその内部に配置されたピストンを有するハウジングを備えている。ピストンは、エンジンが不作動とされ、ピストンが第二の限界位置に向けて第一の限界位置から動くとき、燃料をエンジン吸入マニホルドから吸引し、これによりマニホルドから燃料をパージングする可変容積チャンバをハウジングと共に画成する。
Patent JP-2006502144-A (JP)
IPC: A61P1/04
Filed: 2003-08-16
Abstract: The invention relates to novel purine derivatives of general formula (I), in which R<1> to R<4> are as defined in the claims, the tautomers, stereoisomers, mixtures, prodrugs and salts thereof, in particular the physiologically-acceptable salts thereof with inorganic acids or bases which have useful pharmacological properties, in particular an inhibitory effect on the activity of the dipeptidylpeptidase-IV (DPP-IV) enzyme, the production and use thereof for the prevention or treatment of diseases or conditions related to an increased DPP-IV activity or which can be prevented or reduced by a reduction in the DPP-IV activity, in particular diabetes mellitus of type I or type II. The invention further relates to a medicament comprising a compound of general formula (I) or a physiologically-acceptable salt thereof and a method for production thereof.
Patent JP-2005538199-A (JP)
IPC: F21Y101/00
Filed: 2003-08-26
Abstract: A polyamide molding compound having a partially crystalline polyamide, includes partially aromatic copolyamides and classic mineral fillers. The mineral filler is ultrafine chalk (calcium carbonate) and has an average particle size of at most100 nm.
Patent JP-2006500020-A (JP)
IPC: C12Q1/14
Filed: 2003-09-23
Abstract: Medium for detecting microorganisms (A) resistant to methicillin (I) comprises, apart from necessary nutrients: (a) an antibiotic (II) that is a second- or third-generation cephalosporin; and (b) a chromogen (II) that liberates a chromophore after hydrolysis by an active enzyme of (A).  An Independent claim is also included for a process for detecting (A) by inoculating the new medium with a test sample (or inoculum derived from it), incubation under growth conditions and detecting, in the medium, colored colonies of (A).
Patent JP-2006504817-A (JP)
Title: ポリアミド
IPC: C08G69/48
Filed: 2003-10-28
Abstract: １以上の水酸基を有し、且つポリマー鎖の末端にアミド基を介して化学結合した化合物、を含むポリアミド、該ポリアミドの製造方法、さらにその種のポリアミドを１種以上含むファイバー、フィルム、及び成形体。
Patent JP-2006508437-A (JP)
Title: 周囲感知システムによって路上車両の前方周囲を検出するための方法
IPC: G01S15/86
Filed: 2003-11-11
Abstract: 路上車両の運転者を補助するために、周囲感知システムが使用される。このため、周囲データを記録するために光学センサが車両に適用される。計算ユニットによって画像を生成するために、記録された周囲データが処理され、次に、運転者に例えばディスプレイで表示される。さらに、例えば、画像データ内の対象物を識別するために、画像データにさらなる評価を施すことができる。このため、非常に大量のデータを処理しなければならないが、システムでリアルタイム処理を実現するためには、ハードウェアの効率要件が非常に高くなる。したがって、本発明は、簡単なデータ処理によりシステムでリアルタイム処理を実現する方法に関する。個々の認知部分領域で多段評価を実施することによって、また認知領域を走行車線の領域に制限することによって、評価すべきデータ量を著しく低減でき、かつ周囲検出プロセス中にデータを迅速に処理することができる。
Patent JP-2006500882-A (JP)
Title: 受信機によって決定されるチャネルおよび送信される基準信号を用いたアドホック無線ネットワーク通信の方法および電子デバイス
IPC: H04L12/28
Filed: 2003-09-19
Abstract: 無線アドホック・ネットワークおよび多元接続システム（移動体電話通信システムなど）内で通信するための電子デバイスが開示される。例えば、開示された送信機は、第１のチャネル上でアドホック無線ネットワーク（または多元接続システム）内の第１の受信機にデータを送信し、さらに第１のチャネルとは異なる第２のチャネル上でアドホック無線ネットワーク（または多元接続システム）内の第２の受信機にデータを送信することができる。ここで第１および第２のチャネルは第１および第２の送信データを受信するそれぞれの受信機によって決定される。したがって、アドホック無線ネットワーク（または多元接続システム）内の送信機とさまざまな受信機との間の通信が同時に実行できる。通信のための関連する受信機、方法、コンピュータ・プログラム・プロダクト、およびシステムも開示される。
Patent JP-2006196199-A (JP)
Title: Reactive polymer carrying porous film for separator for battery and manufacturing method of battery using it
Inventor: ICHIKAWA TOMOAKI
IPC: H01M50/491
Filed: 2005-01-11
Abstract: <P>PROBLEM TO BE SOLVED: To provide a separator for a battery having sufficient adhesion, low internal resistance, and excellent high rate characteristics.  <P>SOLUTION: The separator for the battery is manufactured by carrying a reactive polymer obtained by reacting a cross-linkable polymer having at least one kind of reactive group selected from a 3-oxetanyl group and an epoxy group in a molecule with monocarboxylic acid and crosslinking a part in a base porous film. An electrode/reactive polymer carrying porous film laminate is formed by laminating an electrode on a reactive polymer carrying porous film, and housed in a battery container, an electrolyte containing a cationic polymerization catalyst is poured in the battery container, at least one part of the reactive polymer is swelled in the electrolyte, or eluted into the electrolyte, and cationic polymerization is conducted to bond the porous film to the electrode.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006196201-A (JP)
Title: Clear electrode and its manufacturing method
Inventor: INOUE KAZUYOSHI
IPC: H01B13/00
Filed: 2005-01-11
Abstract: <P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a transparent electrode that does not indium, and which is superior in alkaline resistance and wet heating stability, and in which the electrode is hard to have an inverted trapezoidal state.  <P>SOLUTION: This manufacturing method of the transparent electrode includes a first process of forming a transparent conductive film in which zinc oxide and tin oxide are the main components, a second process of forming a resist film on the transparent conductive film, a third process of patterning the resist film, a fourth process of etching the transparent conductive film by using a mixed solution of nitric acid, hydrochloric acid, and water and of forming the transparent electrode, of which the taper angle is in the range of 30 to 89°, and a fifth process of peeling off the residual resist film on the transparent electrode.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006196751-A (JP)
Title: Electric double-layer capacitor with chemically modified carbon nano fiber as polarized electrode
Inventor: ANDO HISAHIRO
IPC: H01G11/40
Filed: 2005-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide an electric double-layer capacitor whose power storage capacity density is larger than a conventional electric double-layer capacitor.  <P>SOLUTION: A polarized electrode made of chemically modified carbon nano tube fiber is used. The electric double-layer capacitor using the chemically modified carbon nano tube fiber as the polarized electrode is approximately 1.3 times larger than that using carbon nano tube fiber as the polarized electrode, and is approximately 1.4 times larger than that using the activated carbon as the polarized electrode.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006192539-A (JP)
Title: Cutting method for work with wire saw and wire saw cutting device
Inventor: KAMEYAMA MICHIO
IPC: B28D5/04
Filed: 2005-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method and device for cutting a work using a wire saw and a working fluid in cooperation, capable of establishing a stable and efficient work cutting process while a sufficient supply of the working fluid to the cutting part is well maintained.  <P>SOLUTION: A work tank 30 made from a bottomed cylinder is filled with the working fluid 33 in the condition that the work to be processed 20 is secured to the bottom of the work tank 30. The work 20 fixed is cut while the two opposing side wall plates 40 of the tank 30 are cut by a wire 10 in the gravitational direction from up to down. At this time, shield plates 51a slidable along the surfaces of the side wall plates 40 in association with movement of the running wire 10 downward in the gravitational direction are slid in such a manner as blocking the cut parts of the side wall plates 40 one after the other, and cutting the work 20 is performed.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006193099-A (JP)
Title: Braking device for handcart
Inventor: SHIMA TATSUHIKO
IPC: B62B5/04
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a brake device in a handcart, capable of braking or locking by suitable operating amount, without a brake lever part of a vertical crosspiece of a frame is bulky.  <P>SOLUTION: At least a part of the frame or a hand-pushed handle is formed by a pipe or a solid rod-shaped member, and a slip is formed on the pipe or the solid rod-shaped member. An end portion of an operating portion operating a linking wire is inserted in the slip, and the inserted end portion of the operating portion is rockably journaled.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006197777-A (JP)
Title: Front and rear wheel driving device
Inventor: KAMIYA MUNEHIRO
IPC: B60W20/00
Filed: 2005-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a front and rear wheel driving device capable of reducing a cost, being excellent in output controllability.  <P>SOLUTION: A rotation position sensor 62 detects a rotation angle θ1 of a rotor of a front motor 60 that drives a drive wheel (front wheel). A rotation position sensor 72 detects a rotation angle θ2 of a rotor of a rear motor 70 that drives a driven wheel (rear wheel). The rotation position sensor 62 has a relatively high detection accuracy, while the rotation position sensor 72 has a relatively low detection accuracy. A control unit 30 executes weak field control on the front motor 60 based on the rotation angle θ1 from the rotation position sensor 62, for controlling an inverter 14. The control unit 30 executes maximum torque control on the rear motor 70 based on the rotation angle θ2 from the rotation position sensor 72, for controlling an inverter 24.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006200956-A (JP)
Title: Semiconductor integrated device
Inventor: SASAKI TORU
IPC: G01R31/28
Filed: 2005-01-19
Abstract: <P>PROBLEM TO BE SOLVED: To provide a semiconductor integrated device having a built-in self-test circuit which can perform an operation check test for a memory at an actual operating speed.  <P>SOLUTION: The semiconductor integrated device comprises a memory cell 11, a system circuit 12 for performing predetermined logical operation processing, the built-in self-test circuit 13, selectors 14 to 16 for performing switching between a normal mode in which a signal supplied from the system circuit 12 is supplied to the memory cell 11 and a test mode in which a signal supplied from the built-in self-test circuit 13 to the memory cell 11, first flip-flops 17 to 19 for latching the signal selected by the selectors 14 to 16 and supplying the latched signal to the memory cell 11, and a second flip-flop 20 for latching a signal output from the memory cell 11 and supplying the latched signal to the built-in self-test circuit 13.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006202574-A (JP)
Title: Dye-sensitized solar battery and manufacturing method of the same
Inventor: KOIDE TAKASHI
IPC: H01M14/00
Filed: 2005-01-19
Abstract: <P>PROBLEM TO BE SOLVED: To provide a dye-sensitized solar battery surely manifesting a high photoelectric conversion rate even if baked at a low temperature when forming a photo-electrode layer by using a semiconductor material.  <P>SOLUTION: The amount of water added to an effective surface area 100 m<SP>2</SP>of a semiconductor fine particle is restrained in 0.15 to 1.50 g. A suitable amount of an acetic acid is added, the acetic acid is adsorbed on the surface of the crystal of the semiconductor material, and pH in paste is lowered by a hydrogen ion released from the acetic acid. By this, low pH is maintained. Curing at 200°C or lower is enough for forming a photoelectric layer 1 since the crystal of the semiconductor material fuses with high efficiency, therefore, it is not necessary to bake, for example, in such a high temperature of 480°C, and such a material interrupting the movement of an electron is not remained between the crystal of the semiconductor material since any non-conductive material is not used. When forming the photo-electrode layer 1 by using the semiconductor material, surely high photoelectric conversion efficiency can be exhibited even if it is cured at low a temperature.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005218858-A (JP)
Title: Golf ball
Inventor: HAYASHI JUNJI
IPC: A63B37/02
Filed: 2005-01-20
Abstract: <P>PROBLEM TO BE SOLVED: To provide a golf ball for compatibly achieving high repulsion, low spinning and an excellent hitting feeling.  <P>SOLUTION: The golf ball is provided with a core, an intermediate layer covering the core and a cover covering the intermediate layer. The intermediate layer and the cover are respectively formed of a thermoplastic resin containing an ionomer resin. The core diameter is ≥36.7 mm and ≤40.7 mm, the deformation amount of the core under the charged load of 100 kg is ≥3.5 mm and ≤6.0 mm, and the thickness of the intermediate layer is ≥0.50 mm and ≤1.40 mm. The Shore D hardness of the intermediate layer is ≥40 and ≤55, the thickness of the cover is ≥0.50 mm and ≤1.40 mm, and the Shore D hardness of the cover is ≥60 and ≤70. The deformation amount of the golf ball under the charged load of 100 kg is ≥2.8 mm and ≤4.5 mm and the golf ball satisfies (the deformation amount of the core under the charged load of 100 kg) - (the deformation amount of the golf ball under the charged load of 100 kg) <1.0 mm.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006198660-A (JP)
Title: Method for forming aluminum alloy billet
Inventor: KITAOKA YAMAJI
IPC: B22D17/00
Filed: 2005-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for forming an Al-Si aluminum alloy billet serving as a material to be formed, which method can form the billet in a half-molten state by heating the billet uniformly with good temperature accuracy at low cost.  <P>SOLUTION: The Al-Si aluminum alloy billet having a structure including an eutectic phase and an α-Al phase, which has been grown to be lumps after dividing the billet, is reheated up to a temperature between the eutectic temperature and the liquidus line of the Al-Si aluminum alloy by means of a ceramic infra-red heating source. After the Al-Si aluminum alloy billet has been made in a semi-molten state, a required press forming operation is carried out. Since the infrared heating source utilizing ceramics is used for heating, the temperature difference between the surface layer portion and the central portion of the billet is not caused, and the Al-Si aluminum alloy billet can be uniformly heated, and further, the temperature control can be easily carried out.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005242329-A (JP)
Title: Electrophotographic image forming apparatus, unit detachably mountable to electrophotographic image forming apparatus and process cartridge
Inventor: CHATANI KAZUO
IPC: H01R33/05
Filed: 2005-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To improve the reliability of the electrical connection of the unit electrical contacts 101a and 101b of a unit 7 and the electrical contacts 103 and 104 arranged at an apparatus body when the unit 7 is mounted to the body 100 of the electrophotographic image forming apparatus.  <P>SOLUTION: The unit 7 detachably mountable to the image forming apparatus includes: the unit electrical contacts 101a and 101b which electrically connect the electrical contacts 103 and 104 of the apparatus body when the unit 7 detachably mountable to the apparatus body 100 is mounted to the apparatus body 100; and an engaging portion 102 which engages with a rotatable electrical contact support member 105 which supports the electrical contacts arranged at the apparatus body. When the unit is inserted into the apparatus body, the engaging portion engages with the electrical contact support member. As the unit is further inserted into the apparatus body, the engaging portion rotates the electrical contact support member. Thus, with the unit electrical contacts and the electrical contacts being in contact with each other, the unit electrical contact and the electrical contact mutually move to reach the electrical contact position.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006203081-A (JP)
Title: Component transfer device and surface mounting machine having the same
Inventor: UCHIYAMA MASAHIRO
IPC: H05K13/04
Filed: 2005-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a component transfer device which reliably detaches an electronic component from a suction nozzle while reducing the intensity of an air blow, and also to provide a surface mounting machine having the component transfer device.  <P>SOLUTION: The component transfer device is arranged so that a head unit having a suction nozzle mounted thereon is provided to move on an XY plane, and that an electronic component sucked on by the suction nozzle with negative pressure is detached at a target position by an air blow from the suction nozzle. The component transfer device comprises: a Z axis servo motor 22 for vibrating the suction nozzle relative to the head unit; and a controller 35 for controlling the drive of the Z axis driving mechanism so as to vibrate the suction nozzle when it detaches the electronic component therefrom.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2005244953-A (JP)
Title: Device for photographing of predetermined part of printed matter in movement
Inventor: TATARCZYK THEODOR
IPC: G03B15/02
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a device and its operating method for photographing an image of predetermined part of printed matter on the move.  <P>SOLUTION: The device for photographing the image of the predetermined part of the printed matter on the move includes at least one camera provided with a two-dimensional electronic image sensor; and a lighting unit which faces the field of vision of the camera and is suited to illuminate the field pulsatingly, while the predetermined part of the printed matter stays within the field. The lighting unit is constituted by a plurality of individual optical sources, whose light beam provides spectrum components different from each other in each group by the emission characteristics of each light beam being different from each other and/or by filtering, when being incident on the field of view of the camera; and a controlling unit for making each individual group of the light sources switch-on/switch-off one by one. Each of the spectrum components is made alter periodically and the image of the predetermined part of the printed matter just within the field of view is to be imaged at each generation of light pulse.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2006199563-A (JP)
Title: Dielectric ceramic, method of manufacturing the same and laminated ceramic capacitor
Inventor: INOUE TOKUYUKI
IPC: H01G4/30
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To provide a dielectric ceramic having small electrostriction under a high electric field, high dielectric constant and excellent temperature characteristic of the dielectric constant.  <P>SOLUTION: In the dielectric ceramic comprising a solid solution consisting of a perovskite structure expressed by ABO<SB>3</SB>(where, A contains Ba, B contains Ti) and containing a rare earth element R as a main phase particle, the main phase particle is formed from 2 regions of a 1st region high in the concentration of the rare earth element and a 2nd region low in the concentration of the rare earth element. When an optional cross-section of the dielectric ceramic is observed, the value of D90 in the distribution of the diameter in the 2nd region is <0.25 μm.  <P>COPYRIGHT: (C)2006,JPO&NCIPI
Patent JP-2006203827-A (JP)
Title: Group signature generation system, apparatus, program and method
Inventor: OKADA KOJI
IPC: G09C1/00
Filed: 2005-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To reduce the number of times of exchanging information between two devices when computing group signature generation while exchanging information between both the devices.  <P>SOLUTION: When generating a group signature for a message (m) by a member signature generator 10, a member certificate cert is transmitted to a group signature generator 20, information σ' generated based on the member certificate cert is transmitted to the member signature generator 10 by the group signature generator 20, a member signature σ" generated based on the information σ' is transmitted to the group signature generator 20 by the member signature generator 10, and a group signature σ is generated and outputted based on the member signature σ" and the member certificate cert by the group signature generator 20. Thus, the number of times of exchanging information between both the devices 10 and 20 is made into one time and a half of reciprocation (3 times for one way), so that the number of times can be reduced less than conventional 2.5 times of reciprocation.  <P>COPYRIGHT: (C)2006,JPO&NCIPI