公开(公告)号：EP1773093A1

公开(公告)日：2007-04-11

申请号：EP05728463.0

申请日：2005-04-06

Applicant: Toa Corporation

Inventor： IWAYAMA, Ken c/o Toa Corp.

IPC: H04R1/26 ,  H04R1/02 ,  H04R27/00

CPC classification number: H04R1/26 ,  H04R27/00 ,  H04R2201/401

Abstract: In some cases, constant directivity of a speaker system is desirably obtained in a wider frequency range. However, a speaker system using a constant directivity horn is frequently used in combination with a box speaker containing a woofer unit. Such a system becomes large in size. Furthermore, constant directivity is desirably obtained in a lower frequency. A speaker system 10 includes an enclosure 20, a first speaker unit 30 for low frequency and a plurality of second speaker units 31, 32, and 33 for high frequency. The enclosure 20 includes a front plate portion 21 which is a baffle plate and a rear plate portion 23. A length of the rear plate portion 22 in a first direction perpendicular to a forward and backward direction is shorter than a length of the front plate portion 21 in the first direction. The first speaker unit 30 and the second speaker units 31, 32, and 33 are mounted to the front plate portion 21. The plurality of second speaker units 31, 32, and 33 are arranged in the first direction. Vibration plates of the plurality of second speaker units 31, 32, and 33 are located in the vicinity of the front plate portions 21 in the forward and backward direction.

Abstract translation: 在一些情况下，希望在更宽的频率范围内获得扬声器系统的恒定方向性。 然而，使用恒定方向性喇叭的扬声器系统经常与包含低音单元的盒式扬声器组合使用。 这种系统的尺寸变大。 此外，希望以更低的频率获得恒定的方向性。 扬声器系统10包括外壳20，用于低频的第一扬声器单元30和用于高频的多个第二扬声器单元31,32和33。 外壳20包括作为挡板和后板部23的前板部分21.后板部分22在与前后方向垂直的第一方向上的长度比前板部分的长度短 21在第一个方向。 第一扬声器单元30和第二扬声器单元31,32和33安装到前板部分21.多个第二扬声器单元31,32和33沿第一方向布置。 多个第二扬声器单元31,32,33的振动板位于前板部21的前后方向附近。

公开(公告)号：EP1727352A1

公开(公告)日：2006-11-29

申请号：EP05719139.7

申请日：2005-02-15

Applicant: Toa Corporation

Inventor： MOROHASHI, Toshio, TOA Corporation

IPC: H04N1/41

CPC classification number: H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/162 ,  H04N19/17 ,  H04N19/176 ,  H04N19/60 ,  H04N19/80 ,  H04N19/85

Abstract: To provide an image compression method capable of performing compression with different image qualities within an image. In a mosaic processing unit (16), area division means (130) divides input image data into a plurality of filtering areas and at least some of the filtering areas are subjected to unification processing for each of the filtering areas by a filtering unit (131). On the other hand, a JPEG encoder (17) divides the image data after the mosaic processing into a plenty of rectangular block areas and each of the block areas is subjected to the DCT processing and quantization processing. Here, the filtering area consists of adjacent one or more than one sets of rectangular areas consisting of two or more pixels obtained by equally dividing the aforementioned block area by 2n (n is a natural number).

Abstract translation: 提供能够以图像内的不同图像质量进行压缩的图像压缩方法。 在马赛克处理单元（16）中，区域划分装置（130）将输入图像数据分割为多个滤波区域，并且滤波单元（131）对滤波区域中的至少一个进行统一处理 ）。 另一方面，JPEG编码器（17）将马赛克处理之后的图像数据分割成大量矩形块区域，并且对每个块区域进行DCT处理和量化处理。 这里，滤波区域由相邻的一组或多于一组的矩形区域组成，所述矩形区域由通过将上述块区域等分成2n（n是自然数）而获得的两个或更多个像素组成。

公开(公告)号：EP1727351A1

公开(公告)日：2006-11-29

申请号：EP05710210.5

申请日：2005-02-15

Applicant: Toa Corporation

Inventor： TABUCHI, Hiroshi, c/o TOA Corporation ,  TAGUCHI, Akira, c/o Musashi Institute of Tech ,  SHIMAUCHI, Kazuhiro, c/o Musashi Institute of Tech ,  MOROHASHI, Toshio, c/o TOA Corporation

IPC: H04N1/41

CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/17

Abstract: To improve the data compression ratio in the data compression/decompression method utilizing the down-sampling process. Image data in a DS area division unit (130) is divided into a plenty of DS areas and DS areas which are not important are converted into contracted data of the block size by down-sampling in a down-sampling unit (131). A relocation unit (132) allocates two or more contracted data in one DS area, inserts file data into the other portion in the DS area, and removes the DS area where no contracted data is allocated, thereby reducing the entire image size. The image data thus contracted is inputted into a JPEG encoder (14) and subjected to a DCT process and a quantization process for each block. When performing restoration, decompression is performed by the JPEG decoder and the original location is restored. As for the contracted data, interpolation is performed to restore the image data.

Abstract translation: 在利用下采样过程的数据压缩/解压缩方法中提高数据压缩率。 DS区域划分单元（130）中的图像数据被划分为大量的DS区域，并且不重要的DS区域在下采样单元（131）中通过下采样而被转换为块大小的合同数据。 重定位单元（132）在一个DS区域中分配两个或多个收缩数据，将文件数据插入DS区域中的其他部分，并且去除没有分配数据的DS区域，从而减小整个图像大小。 如此收缩的图像数据被输入到JPEG编码器（14）中，并对每个块进行DCT处理和量化处理。 执行恢复时，由JPEG解码器执行解压缩，并恢复原始位置。 对于合同数据，执行插值以恢复图像数据。

公开(公告)号：EP1367762A1

公开(公告)日：2003-12-03

申请号：EP02700759.0

申请日：2002-02-25

Applicant: Toa Corporation

Inventor： EJIMA, Ken'ichi, c/o TOA Corporation

IPC: H04L7/02

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.

公开(公告)号：EP0966105A3

公开(公告)日：2003-05-02

申请号：EP99304117.7

申请日：1999-05-27

Applicant: Toa Corporation

Inventor： Nakamura, Shoji, c/o Toa Corporation ,  Yoshikawa, Takashi, c/o Toa Corporation

IPC: H03M1/18

CPC classification number: H03M1/188

Abstract: An A/D converter provides a high conversion accuracy even when an input analog signal is at a low level. The A/D converter (10) comprises a first line including a first A/D conversion unit (ADC1) connected to an input terminal (1) applied with an analog signal, a second line including a first amplifier (AMP1) connected to the input terminal (1) and having an amplification ratio of 2 m (m > 0), a second A/D conversion unit (ADC2), and a second amplifier (AMP2) having an amplification ratio of 2 -m , and a combination of a switch and a level detector (SW, LDET) for connecting an output of the first line or an output of the second line to an output terminal (2) in accordance with an output level of the first line.

Abstract translation: 即使输入模拟信号处于低电平，A / D转换器也可提供高转换精度。 A / D转换器10包括第一线和第二线，第一线包括连接到施加有模拟信号的输入端子1的第一A / D转换单元ADC1，第二线路包括连接到第一放大器AMP1的第一放大器AMP1， 输入端子（1），具有2m（m> 0）的放大比率，第二A / D转换单元（ADC2）和放大率为2-m的第二放大器（AMP2），以及 开关和用于根据第一线路的输出电平将第一线路的输出或第二线路的输出连接到输出端子（2）的电平检测器（SW，LDET）。

公开(公告)号：EP4303401A1

公开(公告)日：2024-01-10

申请号：EP22762918.5

申请日：2022-02-08

Applicant: Toa Corporation ,  Japan Agency for Marine-Earth Science and Technology

Inventor： MORISAWA, Tomohiro ,  OMORI, Shinya ,  TANAKA, Yosuke ,  MIYAZAKI, Eigo ,  AKIYAMA,Keita ,  KYO, Masanori ,  SAWADA, Ikuo ,  KAWAMURA, Yoshihisa

IPC: E21C50/00 ,  E21B43/00

Abstract: A mining riser pipe 2 is extended toward a water bottom B, and at least a lower portion of an insertion pipe 3 connected to a lower portion of the mining riser pipe 2 is inserted into the water bottom B. A liquid L is supplied into the insertion pipe 3, and a rotation shaft 4 that extends inside the mining riser pipe 2 and the insertion pipe 3 in a pipe axial direction and stirring blades 6 attached to a lower portion of the rotation shaft 4 are rotated inside the insertion pipe 3, thereby drilling and dissolving mud S inside the insertion pipe 3 by using the stirring blades 6. Then, the mud S turned into a slurry form by the dissolving is raised to an upper portion of the insertion pipe 3 by a stirring flow generated by the rotation of the stirring blades 6, and the raised mud S in the slurry form is lifted above the water through the mining riser pipe 2 by lifting means. At this time, a rotation speed of the stirring blades 6 is made lower in an initial process at an early stage of the drilling than in a subsequent process after this initial process. In this way, water bottom resources contained in the mud of the water bottom can be efficiently collected.

公开(公告)号：EP4303400A1

公开(公告)日：2024-01-10

申请号：EP22762917.7

申请日：2022-02-08

Applicant: Toa Corporation ,  Japan Agency for Marine-Earth Science and Technology

Inventor： MORISAWA, Tomohiro ,  OMORI, Shinya ,  MURAKAMI, Ryutaro ,  IIDA, Hiroshi ,  MIYAZAKI, Eigo ,  AKIYAMA, Keita ,  KYO, Masanori ,  SAWADA, Ikuo ,  KAWAMURA, Yoshihisa

IPC: E21C50/00 ,  E21B43/00

Abstract: A mining riser pipe 2 is extended from above water toward a water bottom B containing water bottom resources, and at least a lower portion of an insertion pipe 3 connected to a lower portion of the mining riser pipe 2 is inserted into the water bottom B. Subsequently, a liquid L is supplied into the insertion pipe 3 and a rotation shaft 4 that extends inside the mining riser pipe 2 and the insertion pipe 3 in a pipe axial direction is rotated to rotate stirring blades 6 attached to a lower portion of the rotation shaft 4 inside the insertion pipe 3, thereby drilling and dissolving mud S inside the insertion pipe 3. The mud S turned into a slurry form by the dissolving is raised to an upper portion of the insertion pipe 3 by a stirring flow generated by the rotation of the stirring blades 6, and the raised mud S is lifted above the water through the mining riser pipe 2 by lifting means. In this way, water bottom resources contained in the mud of the water bottom can be efficiently collected.

公开(公告)号：EP4181532A1

公开(公告)日：2023-05-17

申请号：EP20944420.7

申请日：2020-07-09

Applicant: Toa Corporation

Inventor： SUETSUGU, Toshimitsu

IPC: H04R3/02 ,  H04R27/00

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).

公开(公告)号：EP2651071B1

公开(公告)日：2019-03-27

申请号：EP11846113.6

申请日：2011-12-09

Applicant: Toa Corporation

Inventor： EJIMA, Ken'ichi ,  OGURA, Takashi ,  MORIGUCHI, Koji

IPC: H04R3/00 ,  H04L9/00 ,  H04R1/08 ,  H04L29/06 ,  H04W12/02

公开(公告)号：EP2184928B1

公开(公告)日：2018-09-26

申请号：EP07805916.9

申请日：2007-08-09

Applicant: Toa Corporation

Inventor： SAKANE, Hidenari

IPC: H04R1/02 ,  F16M13/02 ,  F16M11/04

CPC classification number: F16M13/02 ,  F16M11/041 ,  H04R1/026 ,  H04R2201/021

Abstract: An object of the present invention is to provide a speaker mounting device which does not permit a dismounting work without using a tool but enables an easy dismounting work using the tool. A speaker mounting device 1 of the present invention comprises a speaker component 2 provided at a speaker, and a wall component 3 to be provided at a wall. The speaker component 2 is configured to be slid in a first direction with respect to the wall component to be mounted to the wall component 3. The speaker component 2 is configured to be slid in a second direction with respect to the wall component 3 to be dismounted from the wall component 3. The speaker component 1 includes a movement prevention member 5 and a shaft member 6 coupled to the movement prevention member 5. The shaft member 6 is rotated to cause the movement prevention member 5 to rotate around the shaft member 6 which is a rotational axis. The shaft member 6 has an outer end of a screw head shape or a bolt head shape. The wall component 3 is positioned in the second direction relative to a rotational trajectory of the movement prevention member 5 in a state where the speaker component 2 is mounted to the wall component 3.