专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5937030A Off-hook signal and dial pulse generating circuit and a method for driving the same circuit 失效
标题翻译：摘机信号和拨号脉冲发生电路以及驱动相同电路的方法
公开(公告)号：US5937030A
公开(公告)日：1999-08-10
申请号：US936897
申请日：1997-09-25
申请人： Tokio Miyashita , Tokuo Nakamura , Toshihiko Kotaka
发明人： Tokio Miyashita , Tokuo Nakamura , Toshihiko Kotaka
IPC分类号： H04M1/31 , H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04M1/312
摘要： An off-hook signal and dial pulse generating circuit which has a smaller number of switching devices having a high withstand current characteristic and has a less surge voltage than up to now. A dial pulse circuit and a switch block circuit are connected in parallel with the output side of a full-wave rectifying circuit. The circuit comprises an impedance circuit and a first switch circuit to be turned on/off by a signal. The impedance circuit operates in a state where it has an inductance component in case that a signal synchronized with a signal is off and operates in a state where it has no inductance in case that the signal is on, and an electric current flowing therethrough is turned on/off by the first switch circuit. The circuit comprises a series circuit composed of second and third switch circuits. The second switch circuit is turned on/off in response to a signal synchronized with the signal (where this circuit is off when the signal is on). The third switch circuit is turned on/off in response to the signal.
摘要翻译：一种摘机信号和拨号脉冲发生电路，其具有较少数量的具有高耐受电流特性并且具有比迄今为止更低的浪涌电压的开关装置。拨号脉冲电路和开关块电路与全波整流电路的输出侧并联连接。该电路包括阻抗电路和通过信号导通/截止的第一开关电路。阻抗电路在与信号同步的信号关闭的情况下具有电感分量的状态下工作，并且在信号接通的情况下在其没有电感的状态下工作，并且流过其中的电流被转动由第一开关电路接通/断开。该电路包括由第二和第三开关电路组成的串联电路。第二开关电路响应于与信号同步的信号而被接通/断开（当信号接通时该电路断开）。响应于该信号，第三开关电路被接通/断开。

2. 发明授权

US5602914A Device for limiting the working voltage for mechanical switches in telephony 失效
标题翻译：用于限制电话机械开关工作电压的装置
公开(公告)号：US5602914A
公开(公告)日：1997-02-11
申请号：US509773
申请日：1995-08-01
申请人： Antonio Andreini , Pietro Consiglio , Pietro Erratico , Enrico M. A. Ravanelli
发明人： Antonio Andreini , Pietro Consiglio , Pietro Erratico , Enrico M. A. Ravanelli
IPC分类号： H04M1/00 , H04M1/31 , H04M1/74 , H04M1/82
CPC分类号： H04M1/74 , H04M1/312 , H04M1/82
摘要： Device for limiting the working voltage for mechanical switches in telephony includes terminals for connection to a telephone line, a connection and power supply branch for a control circuit extending from a first terminal, the branch having a first switch, the cathode terminal of a first Zener diode and the source terminal of a first MOSFET transistor being connected to the output terminal of the first switch, the gate terminal of the first MOSFET transistor being connected, through the anode terminal of the Zener diode, to the first terminal. The current absorbed by the device may be adjusted.
摘要翻译：用于限制电话机械开关的工作电压的装置包括用于连接到电话线的端子，用于从第一端子延伸的控制电路的连接和电源分支，该分支具有第一开关，第一齐纳二极管的阴极端子二极管和第一MOSFET晶体管的源极端子连接到第一开关的输出端子，第一MOSFET晶体管的栅极端子通过齐纳二极管的阳极端子连接到第一端子。可以调节由装置吸收的电流。

3. 发明授权

US5425096A Communication device 失效
标题翻译：通讯设备
公开(公告)号：US5425096A
公开(公告)日：1995-06-13
申请号：US884175
申请日：1992-05-18
申请人： Masaaki Okada
发明人： Masaaki Okada
IPC分类号： H04M11/00 , H04M1/31 , H04M1/00
CPC分类号： H04M1/312
摘要： A circuit for generating dial pulses and a circuit for forming the direct current loop of a line have conventionally been made up of relays and a coil. In the present invention, these circuits are made up of components, such as capacitors and a semiconductor switching element, to render a network control unit smaller. A compensating circuit is provided for reducing the distortion (caused by the capacitor in the DC loop) of the waveforms of dial pulses and rise waveforms of a direct current when the direct current loop is formed.
摘要翻译：用于产生拨号脉冲的电路和用于形成线路的直流回路的电路通常由继电器和线圈组成。在本发明中，这些电路由诸如电容器和半导体开关元件的部件组成，以使网络控制单元更小。提供补偿电路，用于在形成直流回路时减小拨号脉冲的波形和直流电流的上升波形的失真（由直流回路中的电容器引起）。

4. 发明授权

US5317634A Telephone subset arrangement 失效
标题翻译：电话子集安排
公开(公告)号：US5317634A
公开(公告)日：1994-05-31
申请号：US691004
申请日：1991-06-19
申请人： Ronald C. S. Fox
发明人： Ronald C. S. Fox
IPC分类号： H04M1/31 , H04M19/08 , H04M3/00
CPC分类号： H04M19/08 , H04M1/312
摘要： A telephone circuit subset arrangement in which the base/emitter junction of a switching transistor (TR1) coupling an internal battery (B1) to the dialler chip's power terminals (VDD, VSS) is shunted by hook-switch signal contacts (HS) when the subset is brought into the off-hook mode, thereby turning the switching transistor off and disconnecting the battery. The circuit is so arranged that upon the switching transistor turning off, three auxiliary switching transistors (TR3, TR4 and TR5) turn on and operate the subset's line switch to connect line current to the dialler chip's power terminals. A network of resistors (R1, R2 and R3) associated with the switching transistor (TR1) ensure that on the one hand sufficient current is available to turn on the auxiliary switching transistors, and on the other hand limit the current to a magnitude which dose not cause excessive battery discharge while the subset is off-hook.
摘要翻译： PCT No.PCT / AU89 / 00493 Sec。 371日期1991年6月19日 102（e）1991年6月19日PCT PCT 1991年11月17日PCT公布。公开号WO90 / 00783 日期1990年7月12日。一种电话电路子集布置，其中将内部电池（B1）耦合到拨号器电源端子（VDD，VSS）的开关晶体管（TR1）的基极/发射极结被钩开关信号触点（HS），当该子集进入摘机模式时，从而关闭开关晶体管并断开电池。电路布置成使得在开关晶体管截止时，三个辅助开关晶体管（TR3，TR4和TR5）导通并操作子集的线路开关，以将线路电流连接到拨号器芯片的电源端子。与开关晶体管（TR1）相关联的电阻（R1，R2和R3）网络确保一方面有足够的电流可用于接通辅助开关晶体管，另一方面将电流限制到大小子集是摘机时不会导致电池放电过度。

5. 发明授权

US5121425A Telephone transmission circuit with improved switching device 失效
标题翻译：具有改进的开关装置的电话传输电路
公开(公告)号：US5121425A
公开(公告)日：1992-06-09
申请号：US444595
申请日：1989-12-01
申请人： Ingo Reichelt
发明人： Ingo Reichelt
IPC分类号： H04M1/31
CPC分类号： H04M1/312
摘要： A circuit arrangement of simple structure for producing dialing pulses for a telephone transmission system so as to provide a relatively low insertion attenuation during transmission. The impedance of the transmission system should not be reduced. At loop closure the a.c. impedance of the circuit is high-ohmic and for d.c. current the circuit has a very low resistance. A switching apparatus is connected to the wires of a connecting line in parallel with the transmission system. The switching apparatus is arranged as a series connection of a bipolar transistor and a switching element consisting of a MOS field-effect transistor.
摘要翻译：一种用于产生用于电话传输系统的拨号脉冲的简单结构的电路装置，以便在传输期间提供相对低的插入衰减。传输系统的阻抗不应该降低。循环闭合。电路的阻抗是高欧姆和直流。电流电路具有很低的电阻。开关装置与传输系统并联连接到连接线的导线。开关装置被布置为双极晶体管和由MOS场效应晶体管组成的开关元件的串联连接。

6. 发明授权

US4887295A Telephone instrument 失效
标题翻译：电话乐器
公开(公告)号：US4887295A
公开(公告)日：1989-12-12
申请号：US59629
申请日：1987-06-08
申请人： James O. M. Jenkins
发明人： James O. M. Jenkins
IPC分类号： H04M1/00 , H04M1/31 , H04M1/53
CPC分类号： H04M1/312 , H04M1/53
摘要： Telephone instruments generally comprise a mechanical hookswitch connected across the pair of speech wires. This specification discloses solid state hookswitch circuitry comprising a switching transistor controlled by a hookswitch and connected in series with the output of a rectifier, the rectifier being connected directly to the incoming speech wires. Because the hookswitch controls a switching transistor, rather than having to switch line voltages directly, any reliable low current make/break switch may be employed.
摘要翻译：电话乐器通常包括连接在该对语音线上的机械钩形开关。本说明书公开了固态钩开关电路，其包括由钩形开关控制并与整流器的输出串联连接的开关晶体管，整流器直接连接到输入的语音线。由于钩开关控制开关晶体管，而不是直接切换线路电压，可以采用任何可靠的低电流制动/断开开关。

7. 发明授权

US4567329A Line circuit for network junctor 失效
标题翻译：网络线路电路
公开(公告)号：US4567329A
公开(公告)日：1986-01-28
申请号：US609976
申请日：1984-05-14
申请人： Francois P. Bailly , Alain Bourgoin , Renato Israel
发明人： Francois P. Bailly , Alain Bourgoin , Renato Israel
IPC分类号： H04M1/31 , H04M7/00 , H04M3/00
CPC分类号： H04M1/312 , H04M7/0096
摘要： The present invention relates to a line circuit for network line junctor and more particularly to a dialling device. The dialling device according to the invention presents a high impedance for the direct current, the direct current being regulated about a predetermined threshold by means of an electronic choke, the regulation being controlled by a control circuit formed by an RC circuit with large time constant, by a diode and a capacitor. The invention is more particularly applicable to private switching equipment or to subscribers' terminals.
摘要翻译：本发明涉及一种用于网络线路线路的线路电路，更具体地说，涉及拨号设备。根据本发明的拨号装置对直流电流呈现高阻抗，通过电子扼流圈将直流调节在预定阈值附近，该调节由具有大时间常数的RC电路形成的控制电路控制，通过二极管和电容器。本发明更特别适用于专用交换设备或用户终端。

8. 发明授权

US4390753A Line interruption arrangement 失效
标题翻译：线路中断安排
公开(公告)号：US4390753A
公开(公告)日：1983-06-28
申请号：US234087
申请日：1981-02-13
申请人： Daniel J. G. Janssen
发明人： Daniel J. G. Janssen
IPC分类号： H04M1/76 , H04M1/31
CPC分类号： H04M1/312
摘要： Telephone subscriber's line interruption arrangement comprising a series arrangement of a semiconductor interrupter contact and a control circuit connected between a first line terminal and a second line terminal, in which a subscriber's line can be connected to the line terminals and via a hook contact. In order to ensure that at low line currents, that is to say in the case of long to very long subscriber's lines, the voltage drop across the interrupter contact is kept very low, the control circuit comprises an output circuit which ensures that the voltage at the control electrode of the semiconductor interrupter contact is at least equal to the voltage at the first terminal.
摘要翻译：电话用户的线路中断装置包括半导体断续器触点和连接在第一线路终端和第二线路终端之间的控制电路的串联布置，其中用户线路可以连接到线路终端并经由钩子接触。为了确保在低线路电流下，也就是说在长到很长的用户线路的情况下，断续器触点两端的电压降保持非常低，控制电路包括输出电路，其确保半导体断续器触点的控制电极至少等于第一端子处的电压。

9. 发明授权

US2849539A Magnetic core circuits 失效
标题翻译：磁芯电路
公开(公告)号：US2849539A
公开(公告)日：1958-08-26
申请号：US62816956
申请日：1956-12-13
申请人： BELL TELEPHONE LABOR INC
发明人： ABBOTT HENRY H
IPC分类号： H04M1/31 , H04Q1/32
CPC分类号： H04Q1/32 , H04M1/312

10. 发明授权

US08170551B2 Plus code dialing in a mobile device 有权
标题翻译：加上移动设备中的代码拨号
公开(公告)号：US08170551B2
公开(公告)日：2012-05-01
申请号：US12410361
申请日：2009-03-24
申请人： Iftekhar Rahman , Gordana Guranovic , Eric Wu
发明人： Iftekhar Rahman , Gordana Guranovic , Eric Wu
IPC分类号： H04W4/00 , H04M3/00
CPC分类号： H04Q3/0025 , H04M1/312 , H04W76/10
摘要： A mobile device include processes that allow the mobile device to make international calls using network-based plus code dialing even when the current network does not inherently support network-based plus code dialing. The mobile device obtains, via a set-up process, state information describing whether the network supports network-based plus code dialing. The mobile device transmits, in response to a request from a user and when the state information indicates the network supports network-based plus code dialing, a message to the network to initiate the international call based on a network-based plus code dialing scheme. The mobile device transmits, in response to the request from the user and when the state information indicates the network does not support network-based plus code dialing, a message to the network to initiate the international call using a handset-based plus code dialing scheme.
摘要翻译：移动设备包括允许移动设备使用基于网络的加码拨号进行国际呼叫的过程，即使当前网络本身不支持基于网络的加码拨号。移动设备经由建立过程获得描述网络是否支持基于网络的加码拨号的状态信息。移动装置响应于来自用户的请求，并且当状态信息指示网络支持基于网络的加码拨号时，基于基于网络的加码拨号方案向网络发送消息以发起国际呼叫。移动设备响应于来自用户的请求，并且当状态信息指示网络不支持基于网络的加码拨号时，发送使用基于手机的加码拨号方案向网络发起国际呼叫的消息。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式