公开(公告)号：US4847897A

公开(公告)日：1989-07-11

申请号：US131610

申请日：1987-12-11

申请人： Donald R. Means

发明人： Donald R. Means

IPC分类号： H04M1/60 ,  H04M9/08

CPC分类号： H04M9/08 ,  H04M1/6033

摘要： An adaptive expander for telephones reduces the gain of a transmitting amplifier in proportion to the intensity of the background noise. Gain reduction occurs when the user is not speaking into the handset microphone. When the user is speaking, however, the gain of the transmitting amplifier is restored to its normal level. Noise is distinguished from speech via long-term averaging of the microphone output signal, and a circuit that precludes the magnitude of the long-term average voltage from ever exceeding the short-term average voltage. The present invention is used in full duplex arrangements where simultaneous transmission in both directions is possible rather than in half duplex arrangements, such as a speakerphone, where transmission occurs only in one direction at a time.

摘要翻译： 用于电话的自适应扩展器与背景噪声的强度成比例地降低发射放大器的增益。 当用户不在手机麦克风中时，会发生增益减少。 然而，当用户说话时，发射放大器的增益恢复到正常水平。 通过麦克风输出信号的长期平均，噪声与语音不同，并且阻止长期平均电压的幅度超过短期平均电压的电路。 本发明用于全双工布置，其中在两个方向上同时传输是可能的，而不是半双工布置，例如扬声器电话，其中传输仅在一个方向上发生。

公开(公告)号：US4700382A

公开(公告)日：1987-10-13

申请号：US835588

申请日：1986-03-03

申请人： Donald R. Means ,  Robert C. True ,  Noble E. Wickliff

发明人： Donald R. Means ,  Robert C. True ,  Noble E. Wickliff

IPC分类号： H04M9/08 ,  H04M1/60

CPC分类号： H04M9/08

摘要： A voice-switched telephone circuit with center idle state improves bi-dirional gain control in loudspeaking telephones and thereby enhances the natural quality of interactive conversation. The voice-switched telephone includes: a transmit channel having a microphone and a three-state amplifier; a receiver channel having a three-state amplifier and a loudspeaker; and a hybrid circuit interconnecting the transmit and receive channels to a two-wire telephone line. The present invention is characterized by independent signal level detecting circuits for the transmit and receive channels. When the magnitude of the signal energy in the transmit channel exceeds a predetermined threshold, the transmit channel amplification is increased and the receive channel amplification is decreased by fixed equal amounts. When the magnitude of the signal energy in the receive channel from the two-wire telephone line exceeds a predetermined threshold, the receive channel amplification is increased and the transmit channel amplification is decreased by fixed equal amounts.

摘要翻译： 具有中心空闲状态的语音交换电话电路改善了扬声电话中的双向增益控制，从而提高了互动对话的自然质量。 语音交换电话包括：具有麦克风和三态放大器的发送信道; 具有三态放大器和扬声器的接收器通道; 以及将发送和接收信道互连到双线电话线路的混合电路。 本发明的特征在于用于发射和接收信道的独立信号电平检测电路。 当发送信道中的信号能量的大小超过预定阈值时，发送信道的放大增加，并且接收信道的放大减少固定的等量。 当来自两线电话线的接收信道中的信号能量的大小超过预定阈值时，接收信道放大增加，传输信道放大减少固定的等量。

公开(公告)号：US4488006A

公开(公告)日：1984-12-11

申请号：US394112

申请日：1982-07-01

申请人： Terrence L. Essig ,  Donald D. Huizinga ,  Donald R. Means

发明人： Terrence L. Essig ,  Donald D. Huizinga ,  Donald R. Means

IPC分类号： H04M19/08 ,  H04M1/00

CPC分类号： H04M19/08

摘要： The present apparatus for controlling the application of telephone line power in a telephone set has obviated the requirement for a local source of power at the premises of a telephone customer. A data processor-based telephone set incorporating the present invention comprises a power supply having first and second voltage storage devices (C401, C402) which accumulate charge from the telephone line. First and second regulator circuits (410, 420) regulate the charging of the voltage storage devices and the power distribution to power-consumptive components of the telephone set during on-hook and off-hook switchhook conditions. A voltage threshold detector (301) actuates a power-down of power consumptive components including the data processor (210) when the power supply voltage falls below a particular threshold value. In the meantime, power is continuously provided to certain essential components such as the volatile memory (220) of the data processor. A telephone impedance switch (202) under data processor control intentionally increases the resistance of the telephone set so that the telephone line voltage delivered to the telephone set is increased, the increased voltage powering certain components of the telephone which require the higher voltage level for proper operation.

摘要翻译： 用于控制电话机中电话线电源的应用的本装置已经消除了对电话客户的房屋处的本地电源的要求。 结合本发明的基于数据处理器的电话机包括具有从电话线累积电荷的第一和第二电压存储装置（C401，C402）的电源。 第一和第二调节器电路（410,420）在挂机和摘机切换挂钩条件期间调节电压存储装置的充电和对电话机的功耗部件的功率分配。 当电源电压低于特定阈值时，电压阈值检测器（301）致动包括数据处理器（210）的功耗组件的掉电。 同时，将功率持续提供给某些基本组件，例如数据处理器的易失性存储器（220）。 在数据处理器控制下的电话阻抗开关（202）有意地增加电话机的电阻，使得传送到电话机的电话线电压增加，为电话的某些组件提供电压，这些电压需要较高的电压电平以适当 操作。

公开(公告)号：US07755220B2

公开(公告)日：2010-07-13

申请号：US11659611

申请日：2005-02-24

申请人： Scott A. Sorg ,  Timothy N. Comerford ,  Donald R. Means

发明人： Scott A. Sorg ,  Timothy N. Comerford ,  Donald R. Means

IPC分类号： G05D23/00

CPC分类号： H02M5/2576 ,  Y10T307/826 ,  Y10T307/858 ,  Y10T307/865

摘要： An electronic thermostat circuit has improved power stealing for controlling an AC control device. The circuit comprises a source of AC control power coupled to an electronic switch means having an electronic switch means control input. The electronic switch means controls the AC control device. The diode bridge controls the electronic switch means by a DC control signal applied to the diode bridge means DC connection. The amplifier means has an amplifier input for controlling the state of the amplifier and an amplifier output for generating the DC control signal. An isolated gate FET means is electrically coupled to the amplifier input for controlling the state of the amplifier. The isolated gate FET means is powered by the current derived from the source of AC control power by power stealing. The digital signal controls the state of the AC control.

摘要翻译： 电子恒温电路具有改进的用于控制AC控制装置的电力窃取。 该电路包括耦合到具有电子开关装置控制输入的电子开关装置的AC控制功率源。 电子开关装置控制交流控制装置。 二极管电桥通过施加到二极管桥接器直流连接的DC控制信号来控制电子开关装置。 放大器装置具有用于控制放大器的状态的放大器输入端和用于产生DC控制信号的放大器输出。 隔离栅极FET装置电耦合到放大器输入端，用于控制放大器的状态。 隔离栅极FET装置由通过电力窃取由AC控制电源产生的电流供电。 数字信号控制交流控制的状态。

公开(公告)号：US5388153A

公开(公告)日：1995-02-07

申请号：US38752

申请日：1993-03-26

申请人： Theodore O. Burger ,  John A. Karpicke ,  Donald M. Keen ,  Donald R. Means ,  Thomas A. Stahl ,  Brian A. Wittman

发明人： Theodore O. Burger ,  John A. Karpicke ,  Donald M. Keen ,  Donald R. Means ,  Thomas A. Stahl ,  Brian A. Wittman

IPC分类号： H04M1/82 ,  H04M1/00

CPC分类号： H04M1/82

摘要： Telephone line status indication is improved by making measurements of the differential voltage across the Tip-Ring terminals of a telephone set. The telephone set is connected to a telephone line which is shared with other parallel-connected sets. The measurement of differential line voltage is made time the set changes state (i.e., between on-hook and off-hook). The maximum magnitude of one of the last three measurements is stored to represent the state, and is arithmetically averaged with the maximum magnitude of one or the last three stored for the oil-hook state to create a reference voltage. The reference voltage is updated each time the telephone set changes state and is continually compared with the present differential line voltage to determine which one is larger A light-emitting-diode on the telephone set indicates that the telephone line is in use whenever the reference voltage exceeds the measured differential line voltage.

摘要翻译： 通过测量电话机的尖端端子上的差分电压来改善电话线状态指示。 电话机连接到与其他并联设备共享的电话线。 差分线路电压的测量是设定变化状态的时间（即在挂机和摘机之间）。 存储最后三个测量中的一个的最大幅度以表示状态，并且对于油钩状态存储的一个或最后三个的最大量值进行算术平均以产生参考电压。 参考电压在每次电话机改变状态时被更新，并且与当前的差分线路电压不断地比较以确定哪一个较大。电话机上的发光二极管指示电话线在每当参考电压 超过测量的差分线路电压。

公开(公告)号：US4413159A

公开(公告)日：1983-11-01

申请号：US364752

申请日：1982-04-02

申请人： Donald D. Huizinga ,  Donald R. Means ,  Edward W. Underhill

发明人： Donald D. Huizinga ,  Donald R. Means ,  Edward W. Underhill

IPC分类号： H04M1/31

CPC分类号： H04M1/312

摘要： In order to provide push-button telephone service to those telephone systems not equipped to respond to multifrequency dialing signals, it is necessary to convert push-button dialed digits into conventional dial pulses. A pulse train consisting of make and break intervals representing the dialed digit is electronically converted (107) into a corresponding series of make and break intervals on the telephone line (102, 103) by switching (106, 108-1, 108-2) a pulsing transistor (101) that is in series with the telephone line ON and OFF. In order to keep the pulsing transistor ON during nondialing intervals and during each make interval, and not attenuate the voice signal, the pulsing transistor is biased by an adjustable current source (105). The current needed to bias the pulsing transistor ON is linearly related to the telephone line current flowing through the emitter-collector path of the transistor, and which varies considerably from station-to-station. In order to minimize the current needed to bias the pulsing transistor, a current sensor (104) derives a signal proportional to the line current which, in turn, is fed back to the current source (105 ) in order to adjust the bias current to be proportional to the line current.

摘要翻译： 为了向那些没有响应多频拨号信号的电话系统提供按钮电话服务，需要将按钮拨打的数字转换成常规拨号脉冲。 通过切换（106,108-1,108-2），电话线（102,103）将由代表拨号数字的拨号和断开间隔组成的脉冲串电路转换成电话线（102,103）上相应的一系列拨号和中断间隔， 与电话线路ON和OFF串联的脉冲晶体管（101）。 为了在非循环间隔期间和在每个制造间隔期间保持脉冲晶体管导通，并且不衰减声音信号，脉冲晶体管被可调电流源（105）偏置。 偏置脉冲晶体管导通所需的电流与流过晶体管的发射极 - 集电极路径的电话线电流呈线性关系，并且在电站到站之间变化很大。 为了最小化偏置脉冲晶体管所需的电流，电流传感器（104）导出与线路电流成比例的信号，该线路电流又被反馈到电流源（105），以便将偏置电流调整到 与线电流成正比。