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4 条记录 (耗时 0.009 秒)

    Cordless loud speaking telephone
    1.
    发明授权
    Cordless loud speaking telephone 失效
    无线扬声器电话

    公开(公告)号：US5138651A

    公开(公告)日：1992-08-11

    申请号：US598642

    申请日：1990-10-19

    申请人： Yozo Sudo

    发明人： Yozo Sudo

    IPC分类号： H04M1/60 ,  H04M1/62 ,  H04M1/725

    CPC分类号： H04M1/62 ,  H04M1/6033 ,  H04M1/72502 ,  H04M1/72558

    摘要： A cordless loud-speaking telephone of the present invention is shaped to be placed on a table or desk or to be suspended from a ceiling. Unlike cordless portable telephones of the handy transceiver type, it enables hands-free talking or communication through a receiving speaker and a transmitting microphone located outside a casing. An antenna conductor and counterpoises are projected from the casing, and a microphone is attached to the counterpoises or the antenna conductor such that the microphone is separated as remotely as possible from the speaker in the casing. As a result, howling and echo which disturb talking or communication via the telephone can be suppressed. Further, plural microphones are attached to plural antenna conductors or counterpoises to cancel the sound of the receiving speaker to prevent the voice from again entering the microphones, or the microphones are attached to the counterpoises or the antenna conductors in such a manner that they effectively receive the voice from the mouth of a talking person from a certain direction. This enables hands-free talking or communication to be more effectively and reliably achieved.

    摘要翻译： PCT No.PCT / JP90 / 00206 Sec。 371 1990年10月19日第 102（e）日期1990年10月19日PCT 1990年2月21日提交PCT公布。 WO90 / 10347 PCT出版物 日本1990年9月7日。本发明的无绳扬声电话的形状是被放置在桌子或桌子上或从天花板悬挂。 与便携式收发器类型的无绳便携式电话不同，它通过位于外壳外部的接收扬声器和发送麦克风实现免提通话或通信。 天线导体和平衡物从壳体突出，并且麦克风附接到平衡物或天线导体，使得麦克风尽可能远离壳体中的扬声器分离。 结果，可以抑制通过电话干扰通话或通信的啸声和回声。 此外，多个麦克风附接到多个天线导体或平衡物，以抵消接收扬声器的声音，以防止语音再次进入麦克风，或者麦克风以有效接收的方式附接到平衡线或天线导体 从一个说话的人的嘴里从一个方向的声音。 这样可以更有效和可靠地实现免提通话或通信。

    Two-way CATV system
    2.
    发明授权
    Two-way CATV system 有权
    双向CATV系统

    公开(公告)号：US06990682B1

    公开(公告)日：2006-01-24

    申请号：US09528823

    申请日：2000-03-20

    申请人： Hiroaki Sato ,  Yozo Sudo

    发明人： Hiroaki Sato ,  Yozo Sudo

    IPC分类号： H04N7/173

    CPC分类号： H04H20/76 ,  H04H20/79 ,  H04N7/102 ,  H04N21/4722 ,  H04N21/812

    摘要： A two-way CATV system is easy of maintenance, stable of a transmission quality and capable of restraining inter-modulation distortion noises of downstream RF signal carriers which are caused by non-linearity of electric contact members of coaxial connectors among upstream ingress noises becoming a problem when performing communications services by utilizing a CATV transmission path. The two-way CATV system comprises at least one bidirectional amplifier provided on a CATV transmission path for connecting a CATV center station to a subscriber home, a bias voltage superposing element for superposing, with a bias voltage, a downstream signal transmitted along a coaxial transmission path subordinate to an amplifier at the terminal among the bidirectional amplifiers, and a bias current adjusting load element, provided at the end of the coaxial transmission path, for setting the bias current corresponding to an application of the bias voltage superposed by the bias voltage superposing element.

    摘要翻译： 双向CATV系统易于维护，传输质量稳定，并且能够抑制下游RF信号载波的互调失真噪声，这是由于上游入口噪声中同轴连接器的电接触构件的非线性变为 通过利用CATV传输路径执行通信服务时的问题。 双向CATV系统包括至少一个双向放大器，其设置在用于将CATV中心站连接到用户家庭的CATV传输路径上，偏置电压叠加元件用偏置电压叠加沿着同轴传输的传输的下行信号 双向放大器中的端子处的放大器的路径以及设置在同轴传输路径的端部的偏置电流调节负载元件，用于设置与施加偏置电压叠加的偏置电压相对应的偏置电流 元件。

    Phone conference system
    3.
    发明授权
    Phone conference system 失效
    电话会议系统

    公开(公告)号：US4605823A

    公开(公告)日：1986-08-12

    申请号：US549471

    申请日：1983-11-07

    申请人： Yozo Sudo ,  Hiroyuki Mori ,  Atsuya Murai

    发明人： Yozo Sudo ,  Hiroyuki Mori ,  Atsuya Murai

    IPC分类号： H04M3/56 ,  H04M9/00 ,  H04M1/60

    CPC分类号： H04M3/56

    摘要： A phone conference system which includes a plurality of microphones and a speaker or speakers which are connected to a telephone. In the phone conference system, a required number of units are connected in cascade fashion. Each unit includes a speaker or speakers, connected via an amplifier to a receiving line, a preamplifier-mixer for unifying the outputs of the microphones, and a summing amplifier unifying the output of the preamplifier-mixer and the output a microphone or microphones from another unit.

    摘要翻译： 一种电话会议系统，其包括多个麦克风和连接到电话的扬声器或扬声器。 在电话会议系统中，所需数量的单元以级联方式连接。 每个单元包括通过放大器连接到接收线的扬声器或扬声器，用于统一麦克风的输出的前置放大器 - 混合器，以及将前置放大器混频器的输出进行统一并将来自另一个的麦克风或麦克风输出的求和放大器 单元。