公开(公告)号：US20050197565A1

公开(公告)日：2005-09-08

申请号：US10948280

申请日：2004-09-24

申请人： Kazuo Yagi ,  Kenji Muto ,  Kaoru Terasaki ,  Takeo Nishino ,  Toshiyuki Hirata

发明人： Kazuo Yagi ,  Kenji Muto ,  Kaoru Terasaki ,  Takeo Nishino ,  Toshiyuki Hirata

IPC分类号： A61B5/05 ,  A61B5/055 ,  G01R33/28 ,  H04R1/00

CPC分类号： A61B5/055 ,  A61B5/7405 ,  A61B5/7465 ,  G01R33/283 ,  H04R2460/13

摘要： An audio communication apparatus for an MRI apparatus performs unidirectional or bidirectional audio communication between a subject in a gantry provided in an examination room and an operator in a control room. An acoustic transducer for transmission and/or reception provided on the subject side is formed by a bone conduction microphone and/or speaker. The bone conduction microphone/speaker transmits a sound to or from the subject by contacting the subject directly or via a protection member, without relying on air as a transmission medium. The apparatus carries out audio transmission without being affected by noise, even in a high-noise environment. The apparatus allows the use of earplugs or sound insulation earmuffs.

摘要翻译： 用于MRI装置的音频通信装置在检查室中提供的台架中的对象与控制室中的操作者之间执行单向或双向音频通信。 骨传导麦克风和/或扬声器形成用于传送和/或接收的用于传送和/或接收的声学换能器。 骨传导麦克风/扬声器通过直接或经由保护构件接触受试者而不依赖空气作为传播介质来将物体传播到对象或从对象传出声音。 该设备即使在高噪声环境中也不会受到噪声的影响而进行音频传输。 该装置允许使用耳塞或隔音耳罩。

公开(公告)号：US4376304A

公开(公告)日：1983-03-08

申请号：US277882

申请日：1981-06-26

申请人： Ryuichi Uchida ,  Kaoru Terasaki ,  Takeo Nishino

发明人： Ryuichi Uchida ,  Kaoru Terasaki ,  Takeo Nishino

IPC分类号： H04R9/16

CPC分类号： H04R9/16

摘要： In a moving coil type stereophonic pickup cartridge, an armature is provided having first, second, and third leg portions which extend in three directions. A source of magnetic flux is disposed with only one pole thereof adjacent to the first, second and third leg portions of the armature. The magnetic circuits thus constructed, having an open return path, generate signals by changes in the magnetic flux through coils wound on the second and third leg portions due to the movement of the armature relative to the magnetic source. Variations in the design of the three leg armature and the magnetic source are disclosed. Practical embodiments of the invention include disclosure of cartridge replacement features providing convenient electrical connection between moving coils and remainder of the sound reproduction system.

摘要翻译： 在动圈式立体声拾取盒中，设置有沿三个方向延伸的第一，第二和第三腿部的电枢。 磁通源设置成仅具有与电枢的第一，第二和第三腿部相邻的一个极。 如此构造的具有开放返回路径的磁路由于电枢相对于磁源的移动而通过缠绕在第二和第三腿部上的线圈的磁通量的变化而产生信号。 公开了三腿电枢和磁源的设计变化。 本发明的实际实施例包括公开盒替换特征，其提供了运动线圈与声音再现系统的其余部分之间方便的电连接。