baber/WOPTO huggingface dataset:
Patent JP-2023077133-A (JP)
Title: Drainage structure for vehicle air conditioner
Inventor: AOSHIKA MAKOTO
IPC: B60H1/32
Filed: 2021-11-24
Abstract: To suppress incursion of vehicle exterior noise into a cabin even when an evaporator is provided in a drive source room and an opening for discharging condensed water outside is provided in a cover.SOLUTION: A drainage structure 100 for an air conditioner 5 of a vehicle 1 provided with a partition wall 4 that separates an engine room 2 for storing an engine from a cabin 3 which receives an occupant, an evaporator 11 that is disposed in the engine room 2 and that cools air supplied into the cabin 3 through heat exchange with a refrigerant, and a cover 30 that is attached to the partition wall 4 from ahead of the cabin 3 and that stores the evaporator 11 comprises a drain pipe 50 which is inserted into the cover 30 to extend in the attaching direction of the cover 30 and through which condensed water generated in the evaporator 11 is discharged outside. The drain pipe 50 has a slit 64 formed to gradually incline upward from a lower end in the extending direction.SELECTED DRAWING: Figure 2
Patent JP-2023078881-A (JP)
Title: Image projection device and control method of image projection device
Inventor: IWASAKI MASATAKE
IPC: A61B3/113
Filed: 2021-11-26
Abstract: To provide an image projection device which allows a user to easily gaze at a peripheral region of an image.SOLUTION: An image projection device 300 comprises: a light source 303 which outputs a light flux based on image data 301; a projection unit which projects a light flux 314 from the light source 303 to a pupil 306 of a user; detection means 311 which detects information about the position of the pupil 306; and a control unit 302 which controls a projection image 401 projected to a retina 308 by the light flux 314 based on the image data 301. The control unit 302 controls the light source 303 so as to change the projection image according to the position of the pupil 306.SELECTED DRAWING: Figure 2
Patent JP-2023079882-A (JP)
Title: Laminated film and method for producing the same
Inventor: HATA YUKI
IPC: B29C48/21
Filed: 2021-11-29
Abstract: To provide a laminated film that can reduce the contamination of a production device therefor while having excellent slipperiness.SOLUTION: A laminated film comprises a resin layer (a) comprising a resin (A), and a resin layer (b) provided on at least one principal face of the resin layer (a) and comprising particles and a resin (B). As measured by TPD-MS method under a helium gas, the total amount of gas released from the resin layer (b) when the temperature of the resin layer (b) is raised from 25°C to 280°C at a rate of 10°C/min is 30 wt.ppm or less relative to the weight of the resin layer (b).SELECTED DRAWING: Figure 1
Patent JP-2023079929-A (JP)
Title: Lid structure of beverage container and beverage container
Inventor: NAKAHARA YUJI
IPC: B65D17/34
Filed: 2021-11-29
Abstract: To provide a lid structure of a beverage container that prevents well leftover beverage or liquid from remaining therein.SOLUTION: A beverage container 1 includes: a lid wall 31 that closes the top surface of the beverage container; a drinking spout 32 formed by opening a portion of the lid wall 31; and an opening piece 34 that closes the drinking spout 32, the drinking spout 32 being formed extending to the contour edge of the lid wall. Since the drinking mouth portion 32 is formed extending over the contour edge and touching the side wall, the beverage inside the container can flow out smoothly without being obstructed by a part of the lid wall, and the amount of leftover beverage can be extremely reduced.SELECTED DRAWING: Figure 1
Patent JP-2023080524-A (JP)
Title: (Meth)acrylic resin composition
Inventor: MANABE MAKOTO
IPC: B32B27/30
Filed: 2021-11-30
Abstract: To maintain antiviral property, transparency, and anti-static property.SOLUTION: A (meth)acrylic resin composition includes a (meth)acrylic resin, a vinylidene fluoride resin, and a glycerine fatty acid ester, where the glycerine fatty acid ester is a glycerine fatty acid ester having a HLB value within the range of 5 or higher and 12 or lower, when the total content of the (meth)acrylic resin, the vinylidene fluoride resin, and the glycerine fatty acid ester is 100 mass%, the content of the (meth)acrylic resin is within the range of 40 mass% or more and 84 mass% or less, the content of the vinylidene fluoride resin is within the range of 15 mass% or more and 50 mass% or less, and the content of the glycerine fatty acid ester is 1 mass% or more and 10 mass% or less.SELECTED DRAWING: None
Patent JP-2023082976-A (JP)
Title: seat
Inventor: TODA KEISUKE
IPC: B64D11/06
Filed: 2021-12-03
Abstract: To provide a seat that can reduce a work load in partial replacement.SOLUTION: A seat includes: a seat cushion; and a seat frame for supporting the seat cushion. The seat cushion includes a replacement part capable of being attached to and detached from the seat frame. The replacement part includes: a hook projecting toward the seat frame; and a part to be engaged provided in a position offset in a seat longitudinal direction relative to the hook. The seat frame includes: a rod extending in a seat width direction and which the hook can engage; and a lock mechanism capable of displacing into a lock state of regulating detachment of the part to be engaged from the seat frame by engaging the part to be engaged and a lock release state of allowing detachment of the part to be engaged from the seat frame.SELECTED DRAWING: Figure 1
Patent JP-2023085819-A (JP)
Title: Packet control device and packet control method
Inventor: YOSHIDA YUKI
IPC: G06F13/38
Filed: 2021-12-09
Abstract: To achieve both inter-packet order control and throughput performance in packet communication.SOLUTION: A packet control device 100 has a transmission source device 20 and a transmission destination device 30 connected by a bus. The transmission source device 20 adds processing waiting information indicating whether immediate processing is possible to a packet to be transmitted to the transmission destination device 30. If the processing waiting information is added to a packet, the transmission destination device 30 waits for a processing permission notification from the transmission source device 20 and then processes the packet.SELECTED DRAWING: Figure 2
Patent JP-2023087249-A (JP)
Title: Self-fusing tape and method for manufacturing self-fusing tape
Inventor: SUGASAWA ATSUSHI
IPC: C09J127/12
Filed: 2021-12-13
Abstract: To provide a colored self-fusing tape which has self-fusing property and is made of fluorine resin having self-fusing property, and a method for manufacturing a colored self-fusing tape.SOLUTION: A self-fusing tape is provided, including a porous film made of fluorine resin, and a coloring agent on the porous film. An abundance of a fluorine element on the surface of the self-fusing tape is 50 at% or more. A method for manufacturing the self-fusing tape is also provided. The manufacturing method includes: obtaining a fluorine resin film or a fluorine resin sheet; performing uniaxial drawing on the fluorine resin film or the fluorine resin sheet, thereby obtaining a porous film made of fluorine resin; coloring the porous fluorine resin film using a coloring agent, thereby obtaining a colored porous film; and performing rolling processing on the colored porous film.SELECTED DRAWING: Figure 1
Patent JP-2023087394-A (JP)
Title: Combustion system for solid combustible material
Inventor: SUZUKI YUJI
IPC: F23G5/50
Filed: 2021-12-13
Abstract: To provide a combustion system for a solid combustible material which can stably combust a solid combustible material like a material to be combusted.SOLUTION: A combustion system 100 for a solid combustible material includes in-furnace gas injecting means 30 which is provided on a structural surface that forms a combustion furnace 20 and which can instantaneously inject a sudden compressed gas PJG to a solid combustible material SC that is being combusted on a stoker 10. A control device 60 for such a system deactivates the in-furnace gas injecting means when detecting, through detecting means 50, an abnormality in any one of a CO concentration, an in-furnace temperature, an in-furnace pressure and the load factor of a suction fan.SELECTED DRAWING: Figure 1
Patent JP-2023087696-A (JP)
Title: Fabric treatment agent, printing ink set, pre-treated fabric, printing, and printed fabric
Inventor: NITO KEN
IPC: D06P5/00
Filed: 2021-12-14
Abstract: To provide: a fabric treatment agent, a printing ink set, a pre-treated fabric, and a printing method capable of suppressing discoloration of a printed fabric; and the printed fabric suppressed in discoloration.SOLUTION: The fabric treatment agent of the present invention is used for printing by a sublimation color material, and characterized by containing a color material capturing compound having a Rf value calculated by paper chromatography under the following conditions being set to 0.7 or smaller. [Conditions of paper chromatography] Procedure 1: a 10% solution of the color material capturing compound is dipped in cellulose filter paper, and then dried to make a carrier. Procedure 2: a 0.1% tetrahydrofuran solution of the sublimation color material is spotted on the carrier, and then dried to make a development sample. Procedure 3: the development sample is developed for 3 minutes at 25°C. Procedure 4: the Rf value is calculated by the following expression. (Expression) Rf value=development distance of the sublimation color material/development distance of acetonitrile.SELECTED DRAWING: None
Patent JP-2023087832-A (JP)
Title: Caster
Inventor: YOSHIJI TORU
IPC: B60B33/00
Filed: 2021-12-14
Abstract: To provide a caster having sufficient brake performance with a space saved.SOLUTION: The caster comprises: a base panel part having a hole part; a caster main body part turnably connected to the base panel part; a wheel part rotatably supported on the caster main body part; a gear part having a plurality of teeth, integrally fixed to the wheel part; an engagement part mounted on the caster main body to be movable between an engagement position at which the part engages with any of the plurality of teeth and a separation position at which the part disengages from any of the teeth; and an actuation shaft part that has an input part provided at one end part and an output part provided at the other end part and is passed turnably to the hole part, which is passed into the hole part to be movable between a first position at which when external force is applied to the input part, the output part presses the engagement part to move the engagement part from the separation position to the engagement position and a second position at which the external force applied to the input part is released so that the pressing to the engagement part by the output part is released and the engagement part is moved from the engagement position to the separation position.SELECTED DRAWING: Figure 1
Patent JP-2023088572-A (JP)
Title: Ceiling structure and cleat
Inventor: NISHIZAKI MAKOTO
IPC: E04B9/18
Filed: 2021-12-15
Abstract: To provide a ceiling structure where horizontal braces are fixed at different heights within the same ceiling.SOLUTION: A ceiling structure is characterized in that: one end 31 of a second beam 3 is connected to one side part 21 of a first beam 2; an end part 51 of a first brace 5 installed in a horizontal direction in a first zone 20 is fixed on the other side part 22 of the first beam 2 to which the second beam 3 is connected; an end part 61 of a second brace 6 installed in a horizontal direction in a second zone 30 at a height different from a height at which the first brace 5 is installed is fixed on the one side part 21 of the first beam 2 to which the second beam 3 is connected; and a cleat 7 having rigidity against a direction parallel to an internal surface direction of a surface formed with a longitudinal direction and a vertical direction of the second beam 3 connected to the one side part 21 of the first beam 2 is fixed on the one side part 21 of the first beam 2, to which the one end 31 of the second beam 3 is fixed, and the one end 31 of the second beam 3 connected to the one side part 21 of the first beam 2.SELECTED DRAWING: Figure 3
Patent JP-2023088792-A (JP)
Title: Semiconductor device characteristic evaluation device and semiconductor device characteristic evaluation system
Inventor: MORITA TAKASHI
IPC: H01L21/66
Filed: 2021-12-15
Abstract: To provide a semiconductor device characteristic evaluation system capable of easily analyzing a relationship between a plurality of characteristics obtained by inspection of a semiconductor device and factors related to design.SOLUTION: A semiconductor device characteristic evaluation system includes a communication unit 25 that acquires a plurality of pieces of inspection data acquired by a plurality of characteristic inspection devices 11 and 12 that inspect optical semiconductor elements and design data relating to the design of a semiconductor element, and a graphing unit that generates image data showing the relationship between some of the plurality of pieces of inspection data or between some of the plurality of pieces of inspection data and the design data.SELECTED DRAWING: Figure 1
Patent JP-2023090429-A (JP)
Title: Light source device and projection device
Inventor: OSUGI NAOHIRO
IPC: G03B21/00
Filed: 2021-12-17
Abstract: To provide a light source device capable of improving the use efficiency of an internal space of the light source device by suppressing an increase in the number of members, and to provide a projection device including the light source device.SOLUTION: A light source device includes a rotary wheel device 150 having a rotary wheel 151 including a reflection region for reflecting light in a blue wavelength range and a transmission region for transmitting at least the light in a red wavelength range and the light in a green wavelength range; and a dichroic mirror 200 for transmitting the light in a blue wavelength range and the light in the red wavelength range and reflecting the green wavelength range. The dichroic mirror 200 which intersects with a part of the rotating wheel 151 so as to overlap therewith and includes an intersection part 200a to which the light in the blue wavelength range, the light in the red wavelength range, and the light in the green wavelength range are irradiated.SELECTED DRAWING: Figure 5
Patent JP-2022100284-A (JP)
Title: Patient ventilation system having sensors and electrodes coupled to intubations tube
Inventor: GOVARI ASSAF
IPC: A61M16/00
Filed: 2021-12-22
Abstract: To provide an improved ventilator system for a patient.SOLUTION: A ventilator system 11 comprises an oxygen-enriched humidified air (OHA) supply subsystem (OHAS) 24 comprising an air compressor and a humidifier 25. The air compressor 23 is configured to compress a preassigned gas mixture to a preassigned pressure. The ventilation system 11 comprises tubes connected between the OHAS 24 and a hospital supply 16. The air compressor 23 is configured to receive oxygen (O2) and air via outlets 21 of the hospital supply 16 so as to produce the OHA at a preassigned mixture (e.g., defined in volumetric percentage) and a preassigned pressure.SELECTED DRAWING: Figure 1
Patent JP-2022031454-A (JP)
Title: Superheated steam dewaxing and sintering apparatus
IPC: C04B35/638
Filed: 2021-12-24
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus that can perform a binder removal step and a sintering step in a short time, and can form a powder sintered shaped body having high precision with less cracks, splits, and the like. 
     SOLUTION: An apparatus for dewaxing and sintering with superheated steam, by which a shaped body formed for sintering into a predetermined form from a molding material containing sinterable powders and an organic binder, is dewaxed by the action of superheated steam and sintered at a predetermined temperature. The apparatus comprises a furnace 2 that houses the sintered shaped body, a superheated steam generator 3 that supplies superheated steam to the furnace, an injection nozzle 5 that injects and supplies superheated steam from above into the furnace and a discharge port 7 that discharges superheated steam containing decomposed binder components out of the furnace. The superheated steam from the injection nozzle is flowed along the surface of the sintered shaped material to the discharge port. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023096714-A (JP)
Title: Power storage element
Inventor: OGAWA MASUMI
IPC: H01G11/76
Filed: 2021-12-27
Abstract: To provide a power storage element capable of improving a volume occupancy rate of an electrode body.SOLUTION: The present invention relates to a power storage element 10 in which a collector 500 includes a first collector 510 and a second collector 520 which are aligned in a first direction and joined with each other. The first collector 510 includes: a first main body part 511 joined to one of an electrode body 600 and an electrode terminal 200; and a first joint part 512 joined to the second collector 520. The second collector 520 has: a second main body part 521 joined to the other of the electrode body 600 and the electrode terminal 200; and a second joint part 522 overlapped and joined to the first joint part 512 at one side in a second direction. The first main body part 511 includes a first principal surface 511a at one side in the second direction and includes a second principal surface 511b at the other side in the second direction. In the first joint part 512, a first joint surface 512a at one side in the second direction is disposed closer to the other side in the second direction than the first principal surface 511a and disposed closer to the one side in the second direction than the second principal surface 511b.SELECTED DRAWING: Figure 5
Patent JP-2023096843-A (JP)
Title: Food cooking and providing machine
Inventor: TANIGUCHI YOSHIAKI
IPC: G07F11/70
Filed: 2021-12-27
Abstract: To provide a food cooking and providing machine preventing uneven cooking from being formed on food.SOLUTION: A food cooking and providing machine 1 cooking food stored in the inside according to requirements of a customer and providing it to the customer, includes a placement plate 31 having a base end 31a supported in a cantilevered manner and an upper surface on which food F is placed, heating means 41 and 42 heating the food F placed on the placement plate 31 from above and below, and support means 51, while the food F is heated, supporting a tip 31b of the placement plate 31 such that the upper face of the placement plate 31 is horizontal.SELECTED DRAWING: Figure 3
Patent JP-2023098500-A (JP)
Title: Method for producing bonding sheet, and method for producing bonded body
Inventor: MASUYAMA KOTARO
IPC: B22F3/14
Filed: 2021-12-28
Abstract: To reduce the risk of breakage.SOLUTION: A method for producing a bonding sheet includes the steps of: alternately laminating a copper particle layer 10A which is a layer of a plurality of copper particles with a BET diameter of 300 nm or less and a member for lamination P to obtain a laminate 10 L; and pressurizing the laminate 10 L at 1 MPa or more and 30 MPa or less while heating at 150°C or more and 300°C or less, to sinter the copper particles, thereby producing a bonding sheet including a sintered body of copper.SELECTED DRAWING: Figure 3
Patent JP-2023098744-A (JP)
Title: Impedance converter circuit, measurement apparatus, and distance measurement apparatus
Inventor: SHIMAMOTO ATSUSHI
IPC: H03F1/32
Filed: 2021-12-29
Abstract: To cancel an influence of floating capacitance by adopting a measurement method using an impedance converter circuit.SOLUTION: An output voltage Vout of an operational amplifier 131 is increased by a Zener voltage VZ1 and lowered by a base-emitter voltage VBE by a positive side low impedance voltage shift circuit 132 and is applied as a positive side voltage (+V) to a positive side terminal of the operational amplifier 131. The output voltage Vout of the operational amplifier 131 is lowered by a Zener voltage VZ2 and increased by the base-emitter voltage VBE by a negative side low impedance voltage shift circuit 133 and is applied as negative side voltage (-V) to a negative side terminal of the operational amplifier 131. The positive side voltage (+V) and the negative side voltage (-V) are made to have a same amplitude and a same phase, which makes an electric potential difference between the positive side voltage (+V) and the negative side voltage (-V) constant. As a result, an AC current is inhibited from flowing through floating capacitance C0 existing at the operational amplifier 131, which cancels an influence of the floating capacitance.SELECTED DRAWING: Figure 4
Patent JP-2021530228-A (JP)
Title: 全細胞生体内変換によるステビオールグリコシドの産生
IPC: C12N1/15
Filed: 2019-07-16
Abstract: 様々な態様及び実施形態では、本発明は、低級グリコシル化中間体から高度なグリコシル化産物を産生するための微生物細胞及び方法を提供する。微生物細胞は、中間体のグリコシル化のために、細胞質中に１つ以上のＵＤＰ依存性グリコシルトランスフェラーゼ酵素を発現する。中間体を含む植物抽出物またはその画分とともに微生物株をインキュベートする場合、これらのグリコシル化中間体は、細胞によるさらなるグリコシル化のために利用可能であり、高度なグリコシル化産物は培地及び／または微生物細胞から回収することができる。【選択図】図５
Patent JP-2021531892-A (JP)
Title: 外科用糸の切断装置
IPC: A61B17/04
Filed: 2019-07-10
Abstract: 外科用糸のための切断装置（１００）であって、長手方向軸（１２０ａ）に沿って延びる管状形状を有するガイド本体（１２０）であって、外科用糸を受け入れるように適合されたハウジング部分（１２１）を規定する内部軸方向空洞（１２９）を有し、当該ガイド本体（１２０）は、外科用糸の挿入を可能にするために少なくとも部分的に開いている第１の端部（１２０’）であって、当接表面（１２２’）によって規定された第１の切断領域（１２２）を有する第１の端部（１２０’）を備える、ガイド本体（１２０）と、長手方向軸（２３０ａ）に沿って延在し且つハウジング部分（１２１）に挿入されるように適合された中央部分（２３１）を含む切断本体（２３０）であって、中央部分（２３１）は、ハウジング部分（１２１）に結合されたときに、外科用糸を収容するための、長手方向軸（１２０ａ）に平行に延びる通路チャネル（３００）を規定するような、長手方向軸（２３０ａ）を横切る断面を有し、当該切断本体（２３０）は、当接表面（２３２’）によって規定された第２の切断領域（２３２）を備えた第１の端部（２３０’）を備え、当該切断本体（２３０）がハウジング領域（１２１）に受け入れられたときに、第２の切断領域（２３２）が第１の切断領域（１２２）に隣接する、切断本体（２３０）と、第１の位置と第２の位置との間で、切断本体（２３０）をガイド本体（１２０）に対して長手方向展開軸（２３０ａ）の周りで回転させることができるアクチュエータ要素（２３３）であって、第１の位置では、第１の切断領域（１２２）および第２の切断領域（２３２）の当接表面（１２２’、２３２’）がそれぞれ、ハウジング領域（１２１）および切断領域（２３０）の第１の端部（１２０’、２３０’）にそれぞれ、内部軸方向空洞（１２９）と連通する通路（２３５）を特定するように、互いに対して配置されており、第２の位置では、通路（２３５）は、当接表面（１２２’、２３２’）の間の外科用糸を切断するように、接線方向に交差する当接表面（１２２’、２３２’）の逆回転運動によって少なくとも部分的に閉塞している、アクチュエータ要素（２３３）と、を備える切断装置（１００）。
Patent JP-2021533450-A (JP)
Title: 機械学習のためのハイパーパラメータの識別および適用
IPC: G06N20/00
Filed: 2019-08-15
Abstract: 機械学習モデルおよび／または特徴エンジニアリング・プロセスのための好適なハイパーパラメータを決定するための方法およびシステムが提供される。好適な機械学習モデルおよび関連するハイパーパラメータが、データセットを解析することによって決定される。共通の一つまたは複数のハイパーパラメータおよび互換性のあるデータセット・スキーマを有する互換性のある機械学習モデルのための好適なハイパーパラメータ値が識別される。ハイパーパラメータは、モデルのパフォーマンス・メトリックに対するそれぞれの影響に応じてランク付けされてもよく、より大きな影響をもつと識別されたハイパーパラメータ値は、より積極的に探索されてもよい。
Patent JP-2021522326-A (JP)
Title: 筋成長および筋機能を促進するための組成物およびその使用法
IPC: A61K38/05
Filed: 2019-04-18
Abstract: 開示する組成物および方法は、筋量を増加させ、筋委縮を防止し、筋成長を促進するとともに、多様な他の状態および疾患の治療に関する。特定の側面において、開示する組成物は、ジロイシンおよびロイシンならびにその薬学的に許容されうる塩で構成される。特定の側面において、開示する組成物を、その必要がある被験体に投与して、筋量を増加させ、筋委縮を防止し、そして／または筋成長を促進する。
Patent JP-2021534093-A (JP)
Title: 腫瘍処置用医薬の製造におけるｔｉｍ−３抗体の使用
IPC: A61P37/04
Filed: 2019-08-20
Abstract: 腫瘍処置用医薬の製造におけるＴＩＭ−３抗体の使用を開示する。特に、非小細胞肺がん処置用医薬の製造におけるＴＩＭ−３抗体またはその抗原結合フラグメントの使用を提供し、ＴＩＭ−３抗体は、配列番号３３で示される重鎖可変領域および配列番号３６で示される軽鎖可変領域を含む。さらに、併用による腫瘍処置用医薬の製造におけるＴＩＭ−３抗体またはその抗原結合フラグメントおよびＰＤ−１抗体またはその抗原結合フラグメントの使用を提供する。
Patent JP-2021533700-A (JP)
Title: 無線通信システムにおける非直交多重接続のためのグラントフリー伝送方法及びその装置
IPC: H04W72/04
Filed: 2019-07-16
Abstract: 【課題】移動通信システムにおいて、サービスを効果的に提供することができる装置及びその方法を提供する。【解決手段】本発明による端末の無線通信システムにおけるグラントフリー（Ｇｒａｎｔ−ｆｒｅｅ）基盤のデータ通信方法は、グラントフリー伝送資源の設定情報を受信する段階と、設定情報に基づいて、ＰＵＳＣＨ（ｐｈｙｓｉｃａｌ ｕｐｌｉｎｋ ｓｈａｒｅｄ ｃｈａｎｎｅｌ）を送信するための伝送資源を選択する段階と、選択された伝送資源のスケジューリング情報を含む上向きリンク制御情報を伝送する段階と、選択された伝送資源を介して、ＰＵＳＣＨを伝送する段階と、を含む。【選択図】図９
Patent JP-2022500648-A (JP)
Title: 平均音速プロファイルに基づく深度又は水深プロファイルの特定方法、かかる速度プロファイルの特定方法、及び関連するソナーシステム
IPC: G01S7/526
Filed: 2019-09-12
Abstract: 本発明は、水中環境（Ｅ）の２点（Ｏ２、Ｍ）間の深度差又は鉛直に関する側方距離を、特に音波の伝搬時間を測定することによって特定する方法に関する。前記特定は、音波が有効伝搬方向に沿って直線で、伝搬方向に依存しない平均速度で伝搬すると仮定される環境の１層モデルに基づく。本発明はまた、前記平均速度のプロファイルを深度差の測定自体に基づいて特定する方法、測探深度の変化間隔にわたる局所速度プロファイルの特定、及び関連するソナーシステム（１０）にも関する。【選択図】図１０