-
公开(公告)号：US20050208669A1
公开(公告)日：2005-09-22
申请号：US11057777
申请日：2005-01-28
Applicant: Emiko Kaneko , Junichi Isoe , Makoto Satoda , Ryozo Goto , Shinichi Akazawa
Inventor： Emiko Kaneko , Junichi Isoe , Makoto Satoda , Ryozo Goto , Shinichi Akazawa
CPC classification number: G01N21/6408 , G01N21/643 , G01N2021/6432 , G01N2021/7786 , Y10T436/16 , Y10T436/209163
Abstract: A method and an apparatus are provided for measuring trace ingredients in water, which make it possible to perform detection and quantitative determination of silica, phosphorus or arsenic in a sample solution. The method includes adding a molybdate ion to a sample solution under an acidic condition, then adding a fluorescent counter cationic pigment thereto, and measuring the time required for the fluorescence emitted by the resultant solution to be attenuated to a prescribed intensity. The measuring apparatus includes an excitation light source which irradiates excitation light to the above-modified solution; a fluorescence detector which detects the fluorescence emitted by the solution; means for measuring the time required for the fluorescence detected by the fluorescence detector to be attenuated to a prescribed intensity; and control means for determining the concentration of silica, phosphorus or arsenic in the sample solution from the time measurement.
Abstract translation: 提供了一种用于测量水中微量成分的方法和装置，这使得可以在样品溶液中进行二氧化硅，磷或砷的检测和定量测定。 该方法包括在酸性条件下向样品溶液中加入钼酸根离子，然后向其中加入荧光反阳离子颜料，并测量所得溶液发射的荧光所需的时间被衰减至规定强度。 该测量装置包括：向上述修正溶液照射激发光的激发光源; 检测溶液发出的荧光的荧光检测器; 用于测量由荧光检测器检测到的荧光被衰减到规定强度所需时间的装置; 以及用于从时间测量确定样品溶液中二氧化硅，磷或砷的浓度的控制装置。
-
公开(公告)号：US06862332B2
公开(公告)日：2005-03-01
申请号：US10467747
申请日：2002-02-25
Applicant: Ken'ichi Ejima
Inventor： Ken'ichi Ejima
CPC classification number: H04L7/0331
Abstract: A master clock signal source (10) generates a master clock signal having a frequency equal to N times the bit rate of received data, where N is a positive integer. A modulo-N counter (12) counts the master clock signal. An edge detecting circuit (4) detects a transition of the received data from a H level to a L level. A counter (8) counts the master clock signal and resets the modulo-N counter (12) if the count counted during a time period in which three edge representative signals occur is 2N. In accordance with the count in the modulo-N counter 12, a clock generating unit 14 generates a clock signal.
Abstract translation: 主时钟信号源（10）产生具有等于接收数据的比特率的N倍的频率的主时钟信号，其中N是正整数。 模N计数器（12）对主时钟信号进行计数。 边缘检测电路（4）检测从H电平到L电平的接收数据的转变。 如果在发生三个边缘代表信号的时间段内计数的计数器为2N，则计数器（8）对主时钟信号进行计数并复位模N计数器（12）。 根据模N计数器12中的计数，时钟产生单元14产生时钟信号。
-
公开(公告)号：US5715322A
公开(公告)日：1998-02-03
申请号：US767696
申请日：1996-12-17
Applicant: Tsutomu Yoshioka , Tsuyoshi Takagi , Hiroshi Kubota
Inventor： Tsutomu Yoshioka , Tsuyoshi Takagi , Hiroshi Kubota
Abstract: A throat device for interconnecting at least two drive units and a horn is provided. The throat device comprises a substantially straight body member having one end to be coupled with the horn, and at least two curved branch members coupled with the other end of said body member such that no phase interference occurs in a high frequency sound range.
Abstract translation: 提供了用于互连至少两个驱动单元和喇叭的喉部装置。 喉部装置包括具有与喇叭联接的一端的基本上直的本体构件，以及与所述本体构件的另一端耦合的至少两个弯曲分支构件，使得在高频声音范围内不发生相位干扰。
-
公开(公告)号：US4903419A
公开(公告)日：1990-02-27
申请号：US197887
申请日：1988-05-24
Applicant: Yutaka Nishikawa
Inventor： Yutaka Nishikawa
CPC classification number: E02F3/8841 , E02F3/9275 , E02F7/005 , E02F7/023
Abstract: A method of and apparatus for continuously dredging sludge deposited on an underwater bed, at a high density of the sludge, according to which digging and scooping devices are placed in an airtight hood opened at its bottom, which is applied on the intended underwater bed and into which air is then introduced to obtain a condition in which water is removed out of the hood, and the digging and scooping devices are then put into operation, whereby dredging is effected at a high efficiency in that the content of water in sludge being dredged is suppressed to a minimum, the sludge being transferred under pressure in a state of containing substantially no additional water than it naturally contains.
Abstract translation: 一种用于连续疏浚沉积在水下床上的污泥的方法和设备，其以高密度的污泥进行疏浚，根据该方法，挖掘和舀取装置放置在其底部敞开的气密罩中，其被施加在预期的水下床上， 然后引入空气以获得将水从发动机罩中取出的状态，然后将挖掘和舀取装置投入运行，从而以疏水的方式高效地进行疏浚，因为污泥中的水分含量被挖泥 被抑制到最小，污泥在基本上不含有比其天然含有的额外的水的状态下在压力下转移。
-
公开(公告)号：US12273692B2
公开(公告)日：2025-04-08
申请号：US18010842
申请日：2020-07-09
Applicant: TOA Corporation
Inventor： Toshimitsu Suetsugu
Abstract: An object is to provide a public address device that effectively prevents occurrence of howling without a drop of the gain. A public address device 100 includes: a loudspeaker 1 that generates a reproduced sound on the basis of a loudspeaker driving signal u(n); a microphone 2 that collects the reproduced sound and an input sound v(n) to generate a microphone-collected-sound signal y(n); a first filter 301 that generates, on the basis of the loudspeaker driving signal u(n), a pseudo echo signal e(n); an echo-cancelling unit 302 that obtains a difference between the microphone-collected-sound signal y(n) and the pseudo echo signal e(n) to generate an echo-cancelled signal d(n); a second filter 311 that whitens the input sound v(n) included in the loudspeaker driving signal u(n); a third filter 312 that whitens the input sound v(n) included in the microphone-collected-sound signal y(n); a first adaptive filter 313 that uses, as a reference signal, an output signal output from the second filter 311, and uses, as a desired signal, an output signal output from the third filter 311, and estimates a propagation characteristic Wo from the loudspeaker 1 to the microphone 2; a unit that repeatedly updates a filter coefficient W of the first filter 301 on the basis of a filter coefficient W identified by the first adaptive filter 313; and a frequency shifting unit 32 that performs a frequency shift on the echo-cancelled signal d(n) to generate the loudspeaker driving signal u(n).
-
Patent Agency Ranking
公开(公告)号：US12170872B2
公开(公告)日：2024-12-17
申请号：US18009743
申请日：2020-06-30
Applicant: TOA Corporation
Inventor： Kazuma Asada , Ryosuke Ozaki
Abstract: Provided is a public address device that facilitates recognizing a sound while performing power control so that input power does not exceed upper-limit supply power of a power source device. Included are a voltage transforming unit 204 that performs voltage transformation of a direct-current power source input from a power source device 10; a power amplifier 202 that amplifies a sound signal using the direct-current power source after the voltage transformation to generate a driving signal that drives an electroacoustic transducer; a power detection unit 205 that detects input power from the power source device 10; a threshold holding unit 207 that holds a power determination threshold Pth corresponding to upper-limit supply power of the power source device 10; a voltage control unit 206 that controls an output voltage of the voltage transforming unit 204 on the basis of the input power Pi and the power determination threshold Pth; and a charge accumulation unit 208 that is connected between the voltage transforming unit 204 and the power amplifier 202, and supplies a power source to the power amplifier 202 when the output voltage of the voltage transforming unit 204 drops.
-
公开(公告)号：US12012836B2
公开(公告)日：2024-06-18
申请号：US18280032
申请日：2022-02-08
Inventor： Tomohiro Morisawa , Shinya Omori , Ryutaro Murakami , Hiroshi Iida , Eigo Miyazaki , Keita Akiyama , Masanori Kyo , Ikuo Sawada , Yoshihisa Kawamura
CPC classification number: E21B43/28 , E21B17/01 , E21B21/001 , E21C50/00
Abstract: A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form by is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by a lifting force.
-
公开(公告)号：US20240141769A1
公开(公告)日：2024-05-02
申请号：US18280032
申请日：2022-02-08
Inventor： Tomohiro MORISAWA , Shinya OMORI , Ryutaro MURAKAMI , Hiroshi IIDA , Eigo MIYAZAKI , Keita AKIYAMA , Masanori KYO , Ikuo SAWADA , Yoshihisa KAWAMURA
CPC classification number: E21B43/28 , E21B17/01 , E21B21/001 , E21C50/00
Abstract: A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by lifting force.
-
公开(公告)号：US20240003253A1
公开(公告)日：2024-01-04
申请号：US18280106
申请日：2022-02-08
Inventor： Tomohiro MORISAWA , Shinya OMORI , Yosuke TANAKA , Eigo MIYAZAKI , Keita AKIYAMA , Masanori KYO , Ikuo SAWADA , Yoshihisa KAWAMURA
IPC: E21C50/00
CPC classification number: E21C50/00
Abstract: A mining riser pipe is extended toward a water bottom, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe, and a rotation shaft extends inside both pipes and stirring blades attached to a lower portion of the rotation shaft are rotated inside the insertion pipe, thereby drilling and dissolving mud inside the insertion pipe into a slurry. Then, the mud S is raised to an upper portion of the insertion pipe by a stirring flow generated by the stirring blades, and the raised mud slurry is lifted above the water through the mining riser pipe 2, and a rotation speed of the stirring blades is lower in an initial process at an early stage of the drilling than in a subsequent process.
-
公开(公告)号：US20230247377A1
公开(公告)日：2023-08-03
申请号：US18009743
申请日：2020-06-30
Applicant: TOA Corporation
Inventor： Kazuma ASADA , Ryosuke OZAKI
Abstract: Provided is a public address device that facilitates recognizing a sound while performing power control so that input power does not exceed upper-limit supply power of a power source device. Included are a voltage transforming unit 204 that performs voltage transformation of a direct-current power source input from a power source device 10; a power amplifier 202 that amplifies a sound signal using the direct-current power source after the voltage transformation to generate a driving signal that drives an electroacoustic transducer; a power detection unit 205 that detects input power from the power source device 10; a threshold holding unit 207 that holds a power determination threshold Pth corresponding to upper-limit supply power of the power source device 10; a voltage control unit 206 that controls an output voltage of the voltage transforming unit 204 on the basis of the input power Pi and the power determination threshold Pth; and a charge accumulation unit 208 that is connected between the voltage transforming unit 204 and the power amplifier 202, and supplies a power source to the power amplifier 202 when the output voltage of the voltage transforming unit 204 drops.
-
-
-
-
-
-
-
-
-
Search Results
94
records
(took 0.015 seconds)
