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    • 4. 发明授权
    • Condenser microphone
    • 冷凝器麦克风
    • US07106869B2
    • 2006-09-12
    • US10613666
    • 2003-07-03
    • Hiroshi KandaShinji OhyamaYasuaki Tomiyama
    • Hiroshi KandaShinji OhyamaYasuaki Tomiyama
    • H04R25/00
    • H04R19/04
    • The present invention relates to a condenser microphone whose body can be miniaturized while keeping a property and a sound quality comparable to those of a conventional condenser microphone. The condenser microphone includes a cylindrical body, a plurality of vibration plates which are formed into the shapes of squares and placed in parallel to a body axis line within the body, acoustic holes formed on a body side wall in a direction vertical to the vibration plates and back pole plates which are placed on a side opposite to the acoustic holes with the vibration plate between and face on the respective vibration plates at an interval of a micro gap. A potential of the back pole plate is varied according to a vibration of the vibration plate.
    • 本发明涉及一种电容麦克风,其主体可以小型化,同时保持与常规电容式麦克风相同的性能和声音质量。 电容麦克风包括圆柱体,多个振动板,其形成为正方形的形状并且平行于主体内的体轴线,并且在垂直于振动板的方向上形成在主体侧壁上的声孔 以及后隔板,它们以与微孔相对的间隔放置在与声孔相对的一侧,振动板在相应的振动板之间和面之间。 后极板的电位根据振动板的振动而变化。
    • 7. 发明授权
    • Navigation system for use with an automobile and reading unit for the
system
    • 用于汽车的导航系统和系统的读取单元
    • US4502123A
    • 1985-02-26
    • US395338
    • 1982-07-06
    • Kazuaki MinamiShinzo TotaniKunio MiuraKazushi AkutsuShinji Ohyama
    • Kazuaki MinamiShinzo TotaniKunio MiuraKazushi AkutsuShinji Ohyama
    • G09B29/10G01C21/00G01C21/22G01C21/26G06F19/00G06F15/50
    • G01C21/3667
    • In a navigation system arranged to display a road map in accordance with road map information from a cassette tape, and the present location of a motor vehicle equipped with the navigation system, a cassette tape distinguishing circuit is provided to a cassette tape player which picks up the road map information from a predetermined cassette having a window at given portion of the cassette housing. A switching circuit is responsive to the cassette tape distinguishing circuit so that the output data of the cassette tape is processed to display a given map only when a cassette carrying road map information is loaded in the cassette tape player. In the case a normal cassette carrying audio signals, such as music, is loaded the picked up audio signal is transmitted to an amplifier so that sound reproduction is effected. Thus, a single cassette player can be used in common as both a part of the navigation system and a part of a sound reproduction system.
    • 在被配置为根据来自盒式磁带的道路地图信息显示路线图的导航系统以及配备有导航系统的机动车辆的当前位置,盒式磁带识别电路被提供给拾取的盒式磁带播放器 来自具有在盒壳体的给定部分处具有窗口的预定盒的路线图信息。 开关电路响应于盒式磁带识别电路,使得只有当携带路线图信息的盒装载在盒式磁带播放器中时,盒式磁带的输出数据才被处理以显示给定的映射。 在携带诸如音乐的音频信号的正常盒中,拾取的音频信号被传送到放大器,从而实现声音再现。 因此,单个盒式播放器可以作为导航系统的一部分和声音再现系统的一部分而被共同使用。