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    Speech networks for telephone sets
    1.
    发明公开
    Speech networks for telephone sets 失效
    用于电话机的语音网络

    公开(公告)号：EP0030228A3

    公开(公告)日：1981-12-30

    申请号：EP81100846

    申请日：1980-09-02

    申请人： Western Electric Company, Incorporated

    发明人： Taylor, Raymond Grady

    IPC分类号： H04M01/10

    CPC分类号： H04M1/585 ,  H04M1/6025 ,  H04M1/76 ,  H04M9/10

    摘要： A speech network (11) for a telephone set is provided including a receiver (27) circuit and a transmitter (60) circuit connected in parallel between a tip lead (16) and a ring lead (17) the tip lead (16) and ring lead (17) being connected to a telephone line (1,2). An amplifying transistor (Q4) can be connected in either of two modes, including a normal receive mode for amplifying received signals from the line (1,2) and applying the amplified receive signal to the receiver (27) circuit. A voice-operated switching unit (Q6,20) is provided for sensing a voice-signal output from the transmitter (60) circuit and connecting the transistor (Q4) in a transmit mode, in which the transistor amplifies the transmitter (60) circuit output for transmission to the line (1,2). A sidetone generating circuit (R31,Q5) is connected in parallel with the receiver (27) circuit in the transmit node, for applying a reduced portion of the amplified transmit signal to the receiver (27) circuit.

    摘要翻译： 提供了一种用于电话机的语音网络（11），包括接收器（27）电路和并联连接在尖端引线（16）和环形引线（17）之间的尖端引线（16）和 环形引线（17）连接到电话线（1,2）。 放大晶体管（Q4）可以以两种模式中的任一种连接，包括用于放大来自线路（1,2）的接收信号的正常接收模式，并将放大的接收信号施加到接收器（27）电路。 提供语音操作切换单元（Q6,20），用于感测从发射器（60）电路输出的语音信号，并以发射模式连接晶体管（Q4），其中晶体管放大发射器（60）电路 输出用于传输到线路（1,2）。 旁路发生电路（R31，Q5）与发射节点中的接收机（27）电路并联连接，用于将放大的发射信号的减少部分施加到接收机（27）电路。

    Telephone with cradle having no moving parts
    3.
    发明公开
    Telephone with cradle having no moving parts 失效
    带有无移动部件的电话的电话

    公开(公告)号：EP0128500A3

    公开(公告)日：1986-08-20

    申请号：EP84106373

    申请日：1984-06-05

    申请人： Telelogic, Inc.

    发明人： Jackson, Joseph M.

    IPC分类号： H04M01/10

    CPC分类号： H04M1/10

    摘要： A telephone having a handset and a cradle therefor. The cradle has no external moving parts. A magnet and a magnetic reed switch are used for sensing on-hook and off-hook conditions. In a first embodiment the magnetic reed switch is provided inside the cradle, in a position which is proximate the earpiece end of the handset when the handset is resting on the cradle; the earpiece houses the magnetic for operating the switch. The earpiece of the handset houses a receiver member which includes a loudspeaker having a voice coil wound on a permanent magnet. If that magnet does not generate a magnetic field strong enough to be sensed by and to actuate (i.e., close) the reed switch when the handset is on the cradle, an additional magnet may be used to supplement the magnetic field strength. In a second embodiment, the positions of the magnet and the switch are reversed - i.e., the magnet is placed in the cradle and the magnetic switch is in the handset. As an alternative to magnetic field sensing, optical sensing may be employed, with LED's in the cradle and an optical detector in the handset, or vice-versa.

    摘要翻译： 具有手机和摇篮的电话。 托架没有外部移动部件。 磁体和磁簧开关用于感测挂机和摘机状况。 在第一实施例中，当手机搁置在支架上时，磁簧开关设置在支架内部，处于靠近手机的听筒端的位置; 耳机容纳用于操作开关的磁性。 手机的听筒容纳有一个接收器构件，该接收器构件包括具有缠绕在永磁体上的音圈的扬声器。 如果该磁体不能产生足够强的磁场，以便当手持机在托架上时由簧片开关感测并致动（即关闭）磁簧开关，则可以使用附加磁体来补充磁场强度。 在第二实施例中，磁体和开关的位置相反 - 即磁体被放置在支架中，并且磁性开关在手柄中。 作为磁场感测的替代，可以采用光学感测，其中LED在支架中，并且手持机中的光学检测器，反之亦然。