公开(公告)号：US4410767A

公开(公告)日：1983-10-18

申请号：US066927

申请日：1979-08-16

申请人： Kouichi Sekiguchi

发明人： Kouichi Sekiguchi

IPC分类号： H04M9/00 ,  H04Q5/20 ,  H04M9/06

CPC分类号： H04M9/005

摘要： A key telephone system in which a key service unit is provided for selectively connecting a plurality of key telephone sets to at least a pair of CO lines through at least one control line provided in correspondence to the CO lines and a common line. The key service unit comprises a DC power source for producing two outputs respectively having certain positive and negative potential differences with respect to a reference potential, at least one first detector provided in correspondence to the CO lines and selectively connected to the control line for detecting the state in which one of the two output voltages is applied across the control line and the common line to flow a current of predetermined value, at least one second detector provided in correspondence to the CO lines and selectively connected to the control line for detecting the state in which the other of the two output voltages is applied across the control line and the common line to flow a current larger than a certain value, and at least one switching means provided in correspondence to the CO lines for disconnecting the first detector from the control line and for connecting the second detector to the control line when the first detector produces an output.

摘要翻译： 一种密钥电话系统，其中提供了一个密钥服务单元，用于通过与CO线和公共线对应的至少一个控制线选择性地将多个密钥电话机连接到至少一对CO线路。 密钥服务单元包括一个DC电源，用于产生分别相对于参考电位具有特定正和负电位差的两个输出;至少一个第一检测器，其对应于CO线设置并选择性地连接到控制线，用于检测 将两个输出电压中的一个施加在控制线和公共线之间以流过预定值的电流的状态;至少一个第二检测器，其对应于CO线设置并选择性地连接到用于检测状态的控制线 其中两个输出电压中的另一个被施加在控制线和公共线上以流过大于特定值的电流，以及至少一个与CO线对应地设置的开关装置，用于将第一检测器与控制器 并且用于当第一检测器产生输出时将第二检测器连接到控制线。

公开(公告)号：US4234765A

公开(公告)日：1980-11-18

申请号：US917578

申请日：1978-06-21

申请人： Kouichi Sekiguchi ,  Hikaru Takematsu ,  Kazutada Katsukura

发明人： Kouichi Sekiguchi ,  Hikaru Takematsu ,  Kazutada Katsukura

IPC分类号： H04M9/00 ,  H04Q5/18

CPC分类号： H04M9/007

摘要： A key telephone system, in which a plurality of key telephone sets are selectively connected to a plurality of CO lines by the use of a plurality of talking lines under control of a key service unit and a plurality of control lines. In order to seize a CO line, a CO line seizure signal from one of key telephone sets is time-divisionally transmitted at a low speed and received by a speed change memory of the key service unit. A high-speed output from the speed change memory is added with dial or hook information and then space-divided for seizing a desired one of the CO lines. A talking operation, a holding operation, a privacy operation and a synchronizing operation in this system are performed on the base of the above operation principle.

摘要翻译： 一种密钥电话系统，其中多个密钥电话机通过在密钥服务单元和多个控制线路的控制下使用多个通话线路选择性地连接到多个CO线路。 为了抓取CO线，来自一个关键电话机的CO线路发送信号以低速分时发送并由密钥服务单元的速度变化存储器接收。 来自变速存储器的高速输出添加有拨号或挂钩信息，然后空格划分以占用期望的一个CO线路。 基于上述操作原理执行该系统中的通话操作，保持操作，隐私操作和同步操作。

公开(公告)号：US4092501A

公开(公告)日：1978-05-30

申请号：US756546

申请日：1977-01-03

申请人： Akihiko Suzuki ,  Hikaru Takematsu

发明人： Akihiko Suzuki ,  Hikaru Takematsu

IPC分类号： H04M9/00 ,  H04M1/72

CPC分类号： H04M9/005

摘要： A key telephone system, in which at least one CO line, at least one intercomm. line and control lines are arranged between a key service unit and a plurality of key telephone sets. The key service unit is provided with a scanning circuit for generating multiplexed code units indicating the connection state of each channel of said CO line and said intercomm. line in a time-division manner to scan the key telephone sets. The key service unit further includes means for transmitting the code unit to each key telephone set through said control lines. Each of the key telephone sets includes a decoder for decoding the code units thus transmitted to obtain individual indication signals indicating the states of each channel.

摘要翻译： 一个关键的电话系统，其中至少有一个CO线，至少有一个intercomm。 线路和控制线路布置在密钥服务单元和多个密钥电话机之间。 密钥服务单元设置有用于产生指示所述CO行和所述通信的每个信道的连接状态的多路复用代码单元的扫描电路。 以时分方式扫描关键电话机。 密钥服务单元还包括用于通过所述控制线路将代码单元发送到每个密钥电话机的装置。 每个关键电话机包括一个解码器，用于对由此发送的码单元进行解码以获得指示每个信道的状态的各个指示信号。

公开(公告)号：US4027110A

公开(公告)日：1977-05-31

申请号：US529050

申请日：1974-12-03

申请人： Hikaru Takematsu ,  Akihiko Suzuki

发明人： Hikaru Takematsu ,  Akihiko Suzuki

IPC分类号： H04Q3/00 ,  H04M1/72

CPC分类号： H04Q3/00

摘要： A telephone set scanning type key telephone system, in which a plurality of key telephone sets are connected in parallel, to a key service unit through control lines composed of a display information line, key information line, a terminal selecting line and a clock line. Each key telephone set comprises a display memory, a key memory, a terminal coincidence circuit and a gate. The terminal coincidence circuit collates a selecting code transmitted thereto from the key service unit through the terminal selecting line and applies clock pulses transmitted thereto from the key service unit through the clock line to the gate to drive the display memory and the key memory only when the selecting code is coincident with the terminal number. A driving signal transmitted in the serial configuration from the key service unit through the display information line is stored in the display memory to develope a display and, at the same time, the key information stored in the key memory is applied in the serial configuration to the key service unit through the key information line.

摘要翻译： 通过由显示信息线，密钥信息线，终端选择线和时钟线组成的控制线，将并行连接有多个密钥电话机的电话机扫描型密钥电话系统连接到密钥服务部。 每个钥匙电话机包括显示存储器，钥匙存储器，终端符合电路和门。 终端符合电路通过终端选择线将从密钥服务单元发送的选择代码进行比较，并通过时钟线将从密钥服务单元发送的时钟脉冲施加到门，以仅驱动显示存储器和密钥存储器 选择代码与终端号码一致。 通过显示信息线从键服务单元以串行配置传输的驱动信号被存储在显示存储器中以开发显示器，并且同时将存储在密钥存储器中的密钥信息以串行配置应用于 关键服务单位通过关键信息线。

公开(公告)号：US3974401A

公开(公告)日：1976-08-10

申请号：US431980

申请日：1974-01-09

申请人： Hisashi Eguchi

发明人： Hisashi Eguchi

IPC分类号： H04M1/654 ,  H04M1/82 ,  H03K17/00

CPC分类号： H04M1/82 ,  H04M1/654

摘要： A system for detecting the transmission direction of a signal on a two-say transmission line, in which a switch is inserted in the two-way transmission line while a signal detector is connected to the two-way transmission line at one side of the switch. Two signal detectors may be connected to the two-way transmission line at both sides of the switch respectively. If the switch has two selected contacts, the two signal detectors are connected to the selected contacts respectively. The switch is switched in response to the output of the signal detector or the outputs of the two signal detectors. The transmission direction of the signal on the two-way transmission line is detected in accordance with the state of the signal detector and the states of the two signal detector after the switching of the switch.

摘要翻译： 一种用于检测双向传输线路上的信号的传输方向的系统，其中开关插入双向传输线路中，同时信号检测器连接到开关一侧的双向传输线路 。 两个信号检测器可以分别连接到开关两侧的双向传输线。 如果开关具有两个选择的触点，则两个信号检测器分别连接到所选择的触点。 响应于信号检测器的输出或两个信号检测器的输出来切换开关。 根据信号检测器的状态和开关切换后的两个信号检测器的状态来检测双向传输线上的信号的传输方向。

公开(公告)号：US4592046A

公开(公告)日：1986-05-27

申请号：US595668

申请日：1984-04-02

申请人： Yoshihiro Kawata ,  Tsunetaka Sakata ,  Teruo Matsufuji ,  Tetsuro Inomata ,  Hiroyuki Miyashita

发明人： Yoshihiro Kawata ,  Tsunetaka Sakata ,  Teruo Matsufuji ,  Tetsuro Inomata ,  Hiroyuki Miyashita

IPC分类号： H04Q11/04 ,  H04J3/12 ,  H04M1/00 ,  H04M3/00

CPC分类号： H04Q11/04

摘要： A click tone removing system for a time division switching system which performs switching of speech channels by a highway switch inserted in a highway. When a hook information detector and a dial information detector detect hook information and a dial information, respectively, delivery of a PCM speech sending signal to the highway is prevented by a blocking function for a fixed period of time, so that the highway is controlled to switch the speech channel, thereby removing a click tone generated by dialing. A subscriber's circuit of an exchange, which changes over a speech sending highway and a speech receiving highway by means of a highway switch, is characterized by the provision of an A/D converter for digitizing a speech sending signal to a digitized speech sending signal sent out to the speech sending highway, a D/A converter for converting a digitized speech receiving signal applied from the speech receiving highway into an analog signal, a gate for gating the input signal to the D/A converter, and a control circuit for controlling the gate, so that during real time processing the speech receiving signal highway is interrupted by opening and closing the gate without controling the higway switch.

摘要翻译： 一种用于时分切换系统的点击音消除系统，其通过插入高速公路的高速公路开关来执行语音信道的切换。 当挂钩信息检测器和拨号信息检测器检测到挂钩信息和拨号信息时，分别通过阻塞功能在一段固定的时间段内将PCM语音发送信号发送到高速公路，使得公路被控制到 切换语音通道，从而消除通过拨号产生的点击音。 通过公路交换机在语音发送高速公路和语音接收公路上改变的交换机的用户电路的特征在于，提供用于将语音发送信号数字化到发送的数字化语音发送信号的A / D转换器 用于将从语音接收公路应用的数字化语音接收信号转换成模拟信号的D / A转换器，用于将输入信号选通到D / A转换器的门，以及用于控制的控制电路 门，使得在实时处理期间，通过打开和关闭门而中断语音接收信号高速公路，而不控制高速开关。

公开(公告)号：US4289399A

公开(公告)日：1981-09-15

申请号：US65502

申请日：1979-08-10

申请人： Kozo Uchida

发明人： Kozo Uchida

IPC分类号： H04B10/158 ,  G01J1/44 ,  G01J1/42

CPC分类号： H04B10/67 ,  H04B10/674

摘要： A light signal observation device, which is provided in combination with light receiving means for detecting a light signal, light intermitting means for intercepting or passing therethrough the light signal incident to the light receiving means, amplifying means for amplifying the output from the light receiving means; time base signal generating means for generating a sawtooth wave in synchronism with the light signal and also while the light signal is intercepted and for generating a luminance modulation signal in the period of generation of the sawtooth wave, and display means for displaying an optical signal waveform including a 0 level on the basis of the output signal from the amplifying means and the sawtooth signal and the luminance modulation signal from the time base signal generating means. The light signal observation device of this invention may be constructed as a synchroscope or a sampling oscilloscope.

摘要翻译： 与用于检测光信号的光接收装置组合设置的光信号观察装置，用于截取或通过入射到光接收装置的光信号的光中继装置，用于放大来自光接收装置的输出的放大装置 ; 时基信号发生装置，用于与光信号同步地产生锯齿波，并且在光信号被截取时产生锯齿波的生成期间的亮度调制信号，以及显示装置，用于显示光信号波形 基于来自放大装置的输出信号和锯齿波信号以及来自时基信号发生装置的亮度调制信号的0电平。 本发明的光信号观察装置可以构成为同步仪或采样示波器。

公开(公告)号：US4203007A

公开(公告)日：1980-05-13

申请号：US863572

申请日：1977-12-22

申请人： Nobuyoshi Hatori ,  Eiiji Morigami

发明人： Nobuyoshi Hatori ,  Eiiji Morigami

IPC分类号： H04M1/652 ,  H04M1/64

CPC分类号： H04M1/652

摘要： A system for receiving a remote control signal in an automatic telephone answering device, in which the remote control signal is detected from a transmission line by the use of a remote control signal detector including a filter so that a message to the transmission line is sent out in response to the detected output of the remote control signal detector. The message from a line for sending the message to the transmission line is extracted after sufficiently attenuating the remote control signal by a directional circuit. The frequency components corresponding to the remote control signal are selected by a second filter from the message extracted, so that when the filter output of the second filter is obtained, transmission of the message to the transmission line is inhibited during the duration of the filter output of the second filter.

摘要翻译： 一种用于在自动电话应答设备中接收远程控制信号的系统，其中通过使用包括滤波器的遥控信号检测器从传输线检测遥控信号，从而向传输线路发送消息 响应于所检测到的遥控信号检测器的输出。 在通过定向电路充分衰减遥控信号之后，提取用于将消息发送到传输线的消息。 对应于遥控信号的频率分量由提取的消息中的第二滤波器选择，使得当获得第二滤波器的滤波器输出时，在滤波器输出的持续时间期间禁止发送到传输线的消息 的第二个过滤器。

公开(公告)号：US4184053A

公开(公告)日：1980-01-15

申请号：US876414

申请日：1978-02-09

申请人： Norio Saneyoshi

发明人： Norio Saneyoshi

IPC分类号： H04M11/06 ,  H04M1/64 ,  H04M1/654 ,  H04M11/00 ,  H04Q1/36 ,  H04M1/26

CPC分类号： H04M1/654 ,  H04Q1/36

摘要： A ringing signal detector, which comprises a series diode clipper automatically biased by an input signal, a DC converter for converting the output of the series diode clipper to a DC level, a DC level detector for detecting the converted DC level to detect whether the input signal is a ringing signal or a dial pulse signal, thereby generating an output only when the input signal is the ringing signal.

摘要翻译： 振铃信号检测器，其包括由输入信号自动偏置的串联二极管限幅器，用于将串联二极管截止器的输出转换为DC电平的DC转换器; DC电平检测器，用于检测转换的DC电平以检测输入 信号是振铃信号或拨号脉冲信号，从而仅在输入信号为振铃信号时产生输出。

公开(公告)号：US4367375A

公开(公告)日：1983-01-04

申请号：US186579

申请日：1980-09-12

申请人： Yuuji Tsuruga ,  Akihiro Kobayashi ,  Makoto Yoshitoshi ,  Yutaka Nishino

发明人： Yuuji Tsuruga ,  Akihiro Kobayashi ,  Makoto Yoshitoshi ,  Yutaka Nishino

IPC分类号： H04M1/76 ,  H04M1/50 ,  H04M1/00

CPC分类号： H04M1/50

摘要： A push-button dial circuit having a low DC resistance and a high output impedance. An oscillator for generating a multi-tone dial signal is connected through a buffer transistor to terminals for coupling the multi-tone dial signal to a subscriber's line. The terminals also supply a DC power source current to the dial circuit. A constant voltage circuit is connected to the oscillator to stabilize the DC current supplied to the oscillator, and a reactance transistor circuit is connected between the terminals and the oscillator for defining a DC supply path from the terminals through the reactance transistor circuit to the oscillator. The reactance transistor circuit includes a transistor having a capacitor and a resistor respectfully connected across the base-emitter path and across the base-collector path of the transistor.

摘要翻译： 具有低直流电阻和高输出阻抗的按钮拨号电路。 用于产生多音调拨号信号的振荡器通过缓冲晶体管连接到用于将多音调拨号信号耦合到用户线路的终端。 端子还向拨号电路提供直流电源电流。 恒压电路连接到振荡器以稳定提供给振荡器的直流电流，并且电抗晶体管电路连接在端子和振荡器之间，用于定义从端子通过电抗晶体管电路到振荡器的直流电源路径。 电抗晶体管电路包括具有电容器和电阻器的晶体管，该电容器和电阻器横跨基极 - 发射极路径跨过晶体管的基极 - 集电极路径。