baber/WOPTO huggingface dataset:
Patent JP-2022051181-A (JP)
Title: Memory system and power supply circuit
Inventor: KAMADA DAIKI
IPC: G06F12/00
Filed: 2020-09-18
Abstract: To provide a memory system and a power supply circuit which prevent malfunction of a PLP function.SOLUTION: According to an embodiment, a memory system includes a first terminal, a nonvolatile memory, a capacitor having a second terminal, and a power supply circuit. The power supply circuit generates at least one second voltage by using a first voltage applied to the first terminal, supplies at least one second voltage to the nonvolatile memory, generates a third voltage by using the first voltage, and charges energy to the capacitor by applying the third voltage to the second terminal. The power supply circuit is configured to supply a voltage based on the energy of the capacitor to the first terminal without stopping charging of the capacitor in response to the voltage of the first terminal falling below a first threshold voltage, to stop charging of the capacitor in response to the voltage of the second terminal falling below a second threshold voltage, and to supply a fourth voltage based on the energy of the capacitor to one terminal.SELECTED DRAWING: Figure 3
Patent JP-2021003597-A (JP)
Title: Game machine
Inventor: OGURA TOSHIO
IPC: A63F7/02
Filed: 2020-10-01
Abstract: To provide a game machine capable of improving game interest.SOLUTION: A game machine includes image display means capable of displaying an image, and performance execution means capable of executing a suggestive performance for suggesting of being controlled in an advantageous state, and capable of executing, corresponding to execution of the suggestive performance, a prescribed performance in which a display mode of prescribed display is taken as a specific mode, by performing prescribed action using the prescribed display displayed on the image display means. The prescribed display includes first prescribed display and second prescribed display different from the first prescribed display, and the ratio controlled to the advantageous state is different between the case where the second prescribed display is hidden and the case where the second prescribed display is not hidden.SELECTED DRAWING: Figure 10-10
Patent JP-2022060775-A (JP)
Title: Inductor
Inventor: IDA KOICHI
IPC: H01F17/04
Filed: 2020-10-05
Abstract: To provide an inductor reduced in porosity in a surface region of an element body, and to provide a method of manufacturing the same.SOLUTION: An inductor 1 comprises an element body that includes a core 40 containing a first soft magnetic particle with a large average particle diameter, a second soft magnetic particle with a small average particle diameter, and a resin, and a coil 30 buried in the core 40. A ratio of the resin in the core 40 is 2.5 wt.% or more and 3.5 wt.% or less. The resin contains a plurality of kinds of resins. In a cross section of the element body, a ratio of a cavity to a total area of the first and second soft magnetic particles and the resin in a surface region provided within a range of 1 μm or more and 100 μm or less from the surface of the element body 10 is smaller than that in a central region of the element body 10.SELECTED DRAWING: Figure 3
Patent JP-2022063991-A (JP)
Title: Battery device and battery device system
Inventor: HANAOKA TERUHIKO
IPC: H01M10/6566
Filed: 2020-10-13
Abstract: To provide a battery device capable of discharging gas to the outside of a battery cell in which an abnormality has occurred, and quickly and individually cooling the battery cell without using a dedicated cooling mechanism.SOLUTION: A battery device 1 includes an on-off valve 11 that discharges gas generated inside each housing 20 of a plurality of battery cells 2, a catalyst 12 that is arranged inside the casing 3 at a position that faces the on-off valve 11 and where the gas can hit, and contains a material that decomposes the gas and lowers the temperature of the gas by endothermic reaction during decomposition, and a release valve 13 that discharges the decomposed gas whose temperature has dropped to the outside of the casing 3. The release valve 13 is arranged at a position where the battery cell 2 is interposed between the release valve 13 and the catalyst 12, and that allows the decomposed gas with reduced temperature to flow along the surface of the housing 20 of the battery cell 2 where gas is generated, which is different from the surface on which the on-off valve 11 is provided.SELECTED DRAWING: Figure 5
Patent JP-2022067351-A (JP)
Title: Wire for endoscopic snares and endoscopic snare
Inventor: YAMASHITA MASAHITO
IPC: A61B17/32
Filed: 2020-10-20
Abstract: To provide a wire for endoscopic snares which reliably secures sessile polyps or projecting mucous membranes with a snare loop so that the same does not slip on the mucosal surface; has no risk that an anti-slip member falls off to stay in a body; and also prevents the member from getting caught in a sheath opening, causing worsened operability.SOLUTION: A wire for endoscopic snares 2 has a first rough surface portion 8 with a rough surface, and a second rough surface portion 10 with a smooth surface. The first rough surface portion 8 has arithmetic average roughness Ra of 0.4 μm or more and 1.0 μm or less. Preferably, the first rough surface portion 8 accounts for 5% or more of an outer exposed surface 7 in a surface area.SELECTED DRAWING: Figure 1
Patent JP-2022070333-A (JP)
Title: Back-rest and chair
Inventor: NOMURA GENKI
IPC: A47C7/40
Filed: 2020-10-27
Abstract: To provide a back-rest in which the parts count of the back-rest with a lumbar support can be suppressed and the assembly can be made easy, and thereby cost can be reduced, and further a feeling of seating is superior, and provide a chair.SOLUTION: A back-rest 4 includes: a back frame 40 having an opening 40s; a stretched material stretched in the front side of the back frame 40; a lumbar support 50 arranged in the rear of the stretched material, and inside of the back frame 40 when viewed from a longitudinal direction; and a supporting part 45 formed integrally with the back frame 40, and supporting the lumbar support 50. The lumbar support 50 has a pair of lumbar support plates 51 formed integrally with the supporting part 45. Each lumbar support plate 51 is formed in an elastically deformable manner so that a proximal end 53a arranged in either one side of the width direction may be supported to the supporting part 45 and the tip end 53b side arranged in the other side of the width direction may be displaced in the longitudinal direction.SELECTED DRAWING: Figure 2
Patent JP-2022072940-A (JP)
Title: Print processing program and print processing method
Inventor: UEDA HIDEAKI
IPC: H04N1/387
Filed: 2020-10-30
Abstract: To provide a print processing program and a print processing method for creating a plurality of print labels for use in superposition of labels with using print data of already created print labels not for use in superposition of labels.SOLUTION: The present invention is directed to a print processing program which causes a terminal apparatus connectable to a label printer to execute the following steps. The program causes a CPU of the terminal apparatus to execute: a step S5 of acquiring one print data indicating contents for use in forming one print label by printing; a step S50 of receiving, through an operating device of the terminal apparatus, an editing operation for generating, by the label printer, a plurality of print labels overlapped in a thickness direction by using a plurality of cartridges based on the acquired one print data; a step of S30 of generating the print data corresponding to the received editing operation; and a step 35 of transmitting the generated print data to the label printer.SELECTED DRAWING: Figure 9
Patent JP-2022075163-A (JP)
Title: Altitude calculation device
Inventor: TOZAWA HIDEAKI
IPC: G09B29/00
Filed: 2020-11-06
Abstract: To accurately calculate an altitude.SOLUTION: A storage device 95 stores mapping data D that defines mapping that, when a plurality of input variables are inputted, outputs an altitude variable, as an output variable, which variable indicates the altitude at a point where a vehicle 100 is traveling. The plurality of input variables include a latitude variable that indicates the latitude of a point where the vehicle 100 is traveling, a longitude variable that indicates the longitude of a point where the vehicle 100 is traveling, and a road type variable which variable indicates the type of road where the vehicle 100 is traveling. A CPU 91 executes an acquisition process of acquiring the values of input variables and a calculation process of inputting the values of input variables acquired by the acquisition process to mapping and thereby calculating the value of an output variable.SELECTED DRAWING: Figure 1
Patent JP-2021038139-A (JP)
Title: Cover glass article
Inventor: KARL DAVID EHEMANN
IPC: C03C21/00
Filed: 2020-11-10
Abstract: To provide a cover glass article for handheld devices that has beautiful appearance while being functional.SOLUTION: A cover glass article includes a three-dimensional shape having an inside surface 210 and an outside surface 212, and having a flat section. Each of the inside and outside surfaces has a surface roughness (Ra) less than 1 nm, and is free of indentations having diameters larger than 150 μm. At least one of the inside and outside surfaces has a surface roughness (Ra) less than 3.0 nm prior to any post-processing. The cover glass article has at least one bend section having a bend radius from 1 mm to 20 mm. Throughout the at least one bend section, the variation in the wall thickness is less than or equal to ±15%.SELECTED DRAWING: Figure 2
Patent JP-2021047416-A (JP)
Title: Apparatus including electrochromic device configured to maintain continuously graded transmission state
Inventor: WANG YIGANG
IPC: G02F1/155
Filed: 2020-11-10
Abstract: To provide an electrochromic device configured to maintain a continuously graded transmission state.SOLUTION: When using an apparatus, an electrochromic device 210 can be switched from a first transmission state to a continuously graded transmission state and maintained in the continuously graded transmission state. Current during switching can be higher than current during maintaining the continuously graded transmission state. In an embodiment, the grading can be reversed to provide a mirror image of the grading. In another embodiment, at least 27% and up to 100% of the electrochromic device can be in a continuously graded transmission state. A control device can be located adjacent to an insulating glass unit, or remotely from the insulating glass unit. In a further embodiment, a gap between bus bars can be used to form a portion of the electrochromic device that can be continuously graded.SELECTED DRAWING: Figure 10
Patent JP-2021049349-A (JP)
Title: Presentation device, presentation method, program, and emotion estimation system
Inventor: FUKAZAWA SHINICHI
IPC: G16Y20/40
Filed: 2020-11-17
Abstract: To provide a technique capable of calculating team emotion further precisely.SOLUTION: A presentation device comprises a presentation unit which presents information showing estimated team emotion, on the basis of information showing a social relationship between a plurality of users and sensor data of each of the users or information based on the sensor data.SELECTED DRAWING: Figure 1
Patent JP-2022085599-A (JP)
Title: Electronic device, retrieval system, control program, recording medium, and control method of electronic device
Inventor: IRITANI TAKEYUKI
IPC: G06F3/0482
Filed: 2020-11-27
Abstract: To provide an electronic device having a character conversion function, such as kana-kanji conversion, and a retrieval function configured to enable smooth retrieval through simpler operation, a retrieval system, a control program, a recording medium, and a control method of the electronic device.SOLUTION: An electronic device 1 includes: an operation unit 30 for receiving user input; a conversion candidate acquisition unit 14 for acquiring conversion candidates which are candidates of fixed phrase to be obtained by performing character conversion on an input phrase input from the operation unit 30; a retrieval unit 12 which performs retrieval based on a search phrase designated from the operation unit 30; and a display control unit 13 which causes the display unit 40 to display a result retrieved by the retrieval unit 12. The retrieval unit 12 performs retrieval using the input phrase as a search phrase. The display control unit 13 causes the display unit 40 to display a result retrieved with the input phrase as a search phrase. The retrieval unit 12 performs retrieval using a fixed phrase selected from the conversion candidates based on the input phrase, as a search phrase. The display control unit 13 causes the display unit 40 to display a result retrieved with the fixed phrase as a search phrase.SELECTED DRAWING: Figure 1
Patent JP-2021141308-A (JP)
Title: Cleaning method and plasma processing apparatus
Inventor: KOSHIMIZU CHISHIO
IPC: H01L21/3065
Filed: 2020-11-30
Abstract: To improve the efficiency of cleaning a plasma processing apparatus.SOLUTION: A cleaning method of cleaning an edge ring and a substrate support in a plasma processing chamber that includes a substrate support having a first mounting portion on which a substrate is mounted and a second mounting portion on which an edge ring is mounted includes a step a) of moving the edge ring placed on the substrate support to a first position away from the substrate support, and a step b) of powering the substrate support while supplying cleaning gas to the plasma processing chamber, and creating local plasma in a gap between the edge ring in the first position, and the substrate support, thereby cleaning the edge ring and the substrate support.SELECTED DRAWING: Figure 3
Patent JP-2022090522-A (JP)
Title: Insulating resin composition, insulating member comprising the cured material, and electrical machine
Inventor: MATSUZAKI SAKAHITO
IPC: C08G59/18
Filed: 2020-12-07
Abstract: To provide an insulating resin composition that can reduce the electrical resistance (volume resistivity) of the insulating resin and suppress the temperature dependence of the electrical resistance (volume resistivity) of the insulating resin, and to provide an insulating member and an electrical machine.SOLUTION: Provided are an insulating resin composition that is made by containing (1) an epoxy resin, and a matrix resin containing a curing agent that cures the epoxy resin, (2) a first filler selected from the group consisting of silica and alumina, and (3) a second filler selected from the group consisting of Fe3O4 and B4C, an insulation insulating member made of a cured product of the insulating resin composition, and an electrical machine including the insulating member.SELECTED DRAWING: None
Patent JP-2022092219-A (JP)
Title: Dental floss holder
Inventor: KITAHARA KOJIRO
IPC: A61C15/04
Filed: 2020-12-10
Abstract: To provide a dental floss holder allowing a user to easily change the type of threads and a tension degree thereof and having excellent user workability.SOLUTION: A dental floss holder according to the present disclosure includes a rod-shaped handle part to be held by a user, a head part to which a dental floss is locked, and a neck part for connecting a tip end of the handle part and the head part, the neck part being narrowed with respect to connecting portions in the head part and the handle part adjacent to the neck part, in the width direction and/or thickness direction of the connecting portions. The head part includes a recessed portion extending in the thickness direction of the head part, formed at a tip end face thereof, and a cutout portion formed from the recessed portion in the longitudinal direction, the cutout portion extending to the neck part.SELECTED DRAWING: Figure 1
Patent JP-2022094156-A (JP)
Title: Packaging device, welding unit, welding method, molding unit, and molding method
Inventor: FUJII TOMOHARU
IPC: B65B51/10
Filed: 2020-12-14
Abstract: To provide an improved packaging device.SOLUTION: A packaging device includes: a conveyance unit 132 for conveying an article 300; a molding unit 120 for arranging a film around the article so that an article 132 is positioned inside a film 210; a first welding unit 150 for welding the film 210 in a conveyance direction of the film 210; a second welding unit 160 for welding the film 210 arranged around the article 300 in a direction crossing the conveyance direction; and a cutting unit 170 for cutting the film 210 along a line welded by the second welding unit 160.SELECTED DRAWING: Figure 1
Patent JP-2022096397-A (JP)
Title: Hot water storage type water heater and hot water storage type hot water supply system
Inventor: SEKI TADAKIYO
IPC: F24H9/00
Filed: 2020-12-17
Abstract: To provide a hot water storage type water heater that can restrain foreign bodies from flowing into an outgoing pipe, and a hot water storage type hot water supply system.SOLUTION: A hot water storage type water heater 1 comprises: a hot water storage tank 10 for storing hot water; an outgoing pipe 12 that is a pipe for passing the hot water stored in the hot water storage tank 10, penetrating an outer wall of the hot water storage tank 10 to reach the inside of the hot water storage tank 10, comprising an opening for causing the hot water to flow thereinto, and in which an angle formed by the opening direction of the opening and the vertical direction is 0° or more and less than 180°; and a return pipe 13 for guiding the heated hot water to the hot water storage tank 10.SELECTED DRAWING: Figure 1
Patent JP-2022098685-A (JP)
Title: Inspection device, lighting device for inspection, inspection method, and method for manufacturing article
Inventor: KATO SHIGEKI
IPC: G01N21/88
Filed: 2020-12-22
Abstract: To achieve an inspection device that can accurately perform inspection of an object with a complex shape.SOLUTION: An inspection device irradiates an evaluation surface 41 of an object 4 with pattern light, picks up, with an imaging unit, reflection images of the pattern light from the evaluation surface while shifting the spatial phases of bright parts and dark parts of the pattern light to acquire a plurality of images in different phases, and performs inspection of the evaluation surface of the object by using the plurality of images. The inspection device picks up, with the imaging unit, images of reflected light reflected on, of surfaces constituting the object, a predetermined surface different from the evaluation surface and reflected on the evaluation surface to acquire the images.SELECTED DRAWING: Figure 1
Patent JP-2022102758-A (JP)
Title: Machine learning execution program, dry eye inspection program, machine learning execution device and dry eye inspection device
Inventor: YOSHIDA MASAKI
IPC: A61B3/10
Filed: 2020-12-25
Abstract: To predict a result of an inspection about a symptom of dry eyes without actually executing the inspection about the symptom of dry eyes.SOLUTION: A machine learning execution program acquires teacher data which uses image data for learning that indicates an image drawing eyes of a subject for learning and eyelid opening data for learning that indicates maximum eyelid opening time of the eyes as a problem and uses inspection image data for learning that indicates an image drawing the eyes when an inspection about dry eyes is executed and inspection result data for learning that indicates a result of the inspection as an answer, and learns a machine learning program with the teacher data. A dry eye inspection program acquires image data for deduction that indicates an image drawing the eyes of a subject for deduction and eyelid opening data for deduction that indicates the maximum eyelid opening time of the eyes, inputs the image data for deduction and the eyelid opening data for deduction to the machine learning program that has learned, estimates a symptom of dry eyes appearing in the eyes of the subject for deduction, and outputs symptom data that indicates the estimated result.SELECTED DRAWING: Figure 2
Patent JP-2021050241-A (JP)
Title: Anordrin compositions and methods for treating diseases
Inventor: YAN JUN
IPC: A61P43/00
Filed: 2020-12-29
Abstract: To provide a method of treating cancer in an individual.SOLUTION: One embodiment of this invention is a method of treating cancer in an individual comprises administering to the individual (a) an effective amount of anordrin or analog thereof (such as anordrin) and optionally (b) at least one other agent selected from the group consisting of tamoxifen, raloxifene or functional equivalent thereof, and an aromatase inhibitor.SELECTED DRAWING: None
Patent JP-2020526446-A (JP)
Title: ブレーキシステム
IPC: B60T7/06
Filed: 2018-07-09
Abstract: 【課題】高度に自動化された走行に適するようにブレーキシステムを改善し、その際、ドライバーにとって快適かつフレキシブルに車両内に取付け可能であるようにする。とりわけＮＶＨ短所を大きく低減させる。 【解決手段】とりわけ高度に自動化された走行の車両のためのブレーキシステム１ａであって、とりわけ少なくとも４つの油圧的に操作可能なホイールブレーキ８ａ−８ｄ、及びプライマリ・ブレーキコントロールユニット３００を持ち、以下のもの、すなわち−ホイール別のブレーキ圧力を設定するためにホイールブレーキごとに少なくとも一つの電気的に操作可能なホイール弁１０ａ‐１０ｄ、１１ａ‐１１ｄ、−大気圧下にある圧力媒体貯蔵タンク４、及び、−ホイールブレーキ８ａ‐８ｄを操作するための電気的に制御可能な圧力提供装置５であって油圧圧力室５０を有しており、それぞれのホイールブレーキ８ａ−９ｄは圧力室５０に油圧接続されているか又は接続可能である、圧力提供装置を含んでいるブレーキシステムにおいて、ブレーキシステム１ａは、ブレーキペダル１を用いて操作可能なシミュレータを持つシミュレーションユニット３、及び、追加モジュール７０を含んでおり、追加モジュールは、ホイールブレーキのうち少なくとも２つ８ａ、８ｃにおいて能動的に圧力を増大させるためにとりわけ電気的に制御可能な圧力提供装置８６を持つ油圧ユニット８０を含んでおり、また、シミュレーションユニット３は別個のモジュール３２０として構成されている。
Patent JP-2020528145-A (JP)
Title: 免疫固定法において抗血清を載置するためのシステム及び方法
IPC: G01N33/53
Filed: 2018-07-13
Abstract: 免疫固定電気泳動アプリケーターシステム及び方法は、抗血清を第１の方向に細長いビードとして載置し、少なくとも表面張力によって第１の方向を横切る方向に移動しないように保持される、基材上の離間した位置に抗血清を載置する。
Patent JP-2020516762-A (JP)
Title: 物体をコーティングするための接着剤組成物及び方法
IPC: C09J167/06
Filed: 2017-04-14
Abstract: 基体の粗いか又は平らでない表面に塗布して滑らかな表面を与えるのに適している、コアシェルビニルエステル及びウレタンアクリラートを含む接着剤組成物。本接着剤組成物は、付加製造法によって作られた大型物体をコーティングして型又は試作品を形成するのに特に適している。【選択図】図１
Patent JP-2020532808-A (JP)
Title: 画像処理装置、画像処理方法及び画像処理プログラム
IPC: G06T1/00
Filed: 2017-09-08
Abstract: 【課題】 雲の影で覆われた画素を正確に検出し、画像内の雲の影の影響を除去することができる画像処理装置３００が提供する。【解決手段】 １つ以上の雲による影響を検出および補正する画像処理装置３００は、入力画像における１つ以上の雲の透過率を画素ごとに計算する雲透過率計算部３１、対応する１つ以上の影の位置を検出するために、各画素の入力画像内の地面から各雲までの高度を推定する雲高度推定部３２、画素ごとに、計算された雲の透過率に平均化フィルタを適用することにより、直射日光放射の減衰率を計算する減衰率推定部３３、算出された減衰率と位置を用いて雲影形成の物理モデルに基づいて１つ以上の影の影響を受ける画素を補正し、補正された画素を含む画像を出力する影除去部３４、を含む。【選択図】 図１７
Patent JP-2020535896-A (JP)
Title: 有孔三次元材料を有する吸収性物品及びその製造方法
IPC: A61F13/512
Filed: 2017-10-11
Abstract: 吸収性物品（１０、１１０）が提供される。吸収性物品（１０、１１０）は、不織布の液体透過性トップシート（２６、１１４、２００）と、液体不透過性バックシート（２８、１１６）と、トップシート（２６、１１４、２００）とバックシート（２８、１１６）との中間に少なくとも部分的に配置された吸収性コア（３０、１１８）と、を含む。トップシート（２６、１１４、２００）は繊維の層を含み、繊維の層内に画定された複数の孔（２０６）を有する。孔（２０６）の少なくともいくつかは、本明細書の２Ｄ Ｘ線ＣＴスキャン試験に従って、約５５度〜約９０度の範囲内、約６０度〜約８０度の範囲内、約６３度〜約７５度の範囲内の角度で配置された部分を有する側壁（２１２）を有する。
Patent JP-2021501360-A (JP)
Title: ディスプレイ装置及びその分解方法
IPC: G09F9/00
Filed: 2019-02-18
Abstract: 【課題】 点検や修理のとき分解しやすくなるように改良された構造を有する。【解決手段】 ディスプレイ装置は、メーンフレームと、メーンフレームに移動自在に設けられるマグネットと、メーンフレームに分離可能に配置されるエルイーディーモジュールアセンブリとを含み、エルイーディーモジュールアセンブリは、複数のエルイーディーモジュールと、複数のエルイーディーモジュールが設けられ、マグネットと相互作用する磁性体が設けられる支持フレームとを含む。ディスプレイ装置は、複数のエルイーディーモジュールに電源を供給するために設けられる電源ケーブルと、電源ケーブルの接続がしやすくなるように、メーンフレームに設けられるカバーとをさらに含む。【選択図】 図２
Patent JP-2021503743-A (JP)
Title: データ処理方法とネットワーク装置
IPC: H04W24/10
Filed: 2017-11-07
Abstract: 本出願の実施例はデータ処理方法とネットワーク装置を開示する。該方法は、第一のネットワーク装置がデータレートを確定することと、該第一のネットワーク装置が該データレートに基づき、処理待ちデータを安全に処理するか否かを確定することとを含む。本出願の実施例における方法とネットワーク装置は、データ伝送の性能を向上させることに役立つ。
Patent JP-2021502843-A (JP)
Title: 注射デバイスにおける電力節約
IPC: A61M5/24
Filed: 2018-11-12
Abstract: 薬物注射デバイス（１０２）であって、ある体積の薬物を保持するように構成されたカートリッジ（１０４）と、少なくとも有効状態およびスリープ状態で動作するように構成された１つまたはそれ以上のプロセッサ（１２０）であって、１つまたはそれ以上のプロセッサ（１２０）が有効状態の間に、薬物注射デバイス（１０２）の動作を制御するように構成された、１つまたはそれ以上のプロセッサ（１２０）と、カートリッジ（１０４）に配設された部材（１１５）であって、１つまたはそれ以上のプロセッサ（１２０）に電気的に接続された少なくとも２つの導電面（１２２）を含む、部材（１１５）と、少なくとも２つの導電面（１２２）から離間した導電要素（１２４）を含む駆動機構（１０６）とを備え、ここで１つまたはそれ以上のプロセッサ（１２０）は、導電要素（１２４）が少なくとも２つの導電面（１２２）に電気接触するとき、スリープ状態から有効状態に入るように構成された、薬物注射デバイス。【選択図】図１
Patent JP-2020537156-A (JP)
Title: 受動協調ターゲットを有する測定装置
IPC: H04B11/00
Filed: 2018-08-12
Abstract: 質問ユニットに接続された第１電気音響変換器と、共振器に接続された少なくとも１つの第２電気音響変換器とを備えたシステムであって、第１電気音響変換器及び第２電気音響変換器は音響チャネルを形成し、第２電気音響変換器は、共振器と共に、受動協調ターゲットを形成し、該ターゲットは、質問ユニットから質問信号を受信する時、音響チャネルを介して応答信号を送信し、また、質問信号は応答信号より高いエネルギーを有する、システム。【選択図】図１