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

US4099031A Method and apparatus for automatically identifying an individual calling party on a multiparty telephone line 失效
标题翻译：用于自动识别多媒体电话线上的个人电话派对的方法和装置
公开(公告)号：US4099031A
公开(公告)日：1978-07-04
申请号：US751994
申请日：1976-12-17
申请人： D. Frederic Proctor , Darrell D. Cole
发明人： D. Frederic Proctor , Darrell D. Cole
IPC分类号： H04M15/36
CPC分类号： H04M15/36
摘要： After description of a number of prior art automatic telephone number identification systems and certain problems associated therewith, a new method and apparatus for use in such systems which overcomes the problems of the prior art is described. In its preferred form, the method includes the steps of applying to the telephone line at a central office a voltage which has a magnitude sufficient to produce a first predetermined value of loop current in the telephone line. At each party station, the loop current is caused to change between the first predetermined value and a second predetermined value in a manner unique to that party station, with the second predetermined value being smaller than the first predetermined value but greater than a value of loop current that would signify to the central office that an on-hook condition exists on the telephone line. At the central office, the loop current change is detected and compared with a plurality of stored loop current changes to provide party station identification, with each stored loop current change being unique to each party station. In a preferred embodiment, these steps occur in a predetermined time sequence, with the loop current changes also occurring at predetermined but distinct time intervals, each of which is unique to a party station. The apparatus for practicing this method includes an automatic party identifier for location at the central office and a subscriber module adapted to be located in circuit with a party station and the telephone line.

2. 发明授权

US4126771A Telephone line lifting apparatus 失效
标题翻译：电话线提升装置
公开(公告)号：US4126771A
公开(公告)日：1978-11-21
申请号：US819268
申请日：1977-07-27
申请人： D. Frederic Proctor , Darrell D. Cole
发明人： D. Frederic Proctor , Darrell D. Cole
IPC分类号： H04M3/30 , H04B3/46
CPC分类号： H04M3/301
摘要： A line lifting apparatus is disclosed which functions to connect and disconnect a customer station and a telephone line extending from a central office to the customer station, for line testing purposes. The connection and disconnection is provided by a bistable latching relay which is controlled by a control circuit responsive to potentials impressed on the conductors of the telephone line. A first potential applied to either or both of the conductors of the telephone line causes the control circuit to place the bistable latching relay in a state wherein the telephone line is disconnected from the customer station, and a second potential applied to either or both of the conductors of the telephone line causes the control circuit to place the bistable latching relay in a state wherein the telephone line is connected with the customer station. The second potential differs in either magnitude or polarity from the first potential and preferably has a magnitude substantially equal to that normally applied to the telephone line at the central office by the central office station battery, and a like polarity, so that connection between the telephone line and the customer station is assured in normal operation of the telephone system. Four specific embodiments of the control circuit are disclosed, as is an embodiment of a switchable power supply adapted to selectively provide the first and second potentials at the central office.
摘要翻译：公开了一种线提升装置，其用于连接和断开客户站和从中心局延伸到客户站的电话线，用于线路测试目的。连接和断开由双稳态闭锁继电器提供，双稳态闭锁继电器由控制电路控制，响应于施加在电话线的导线上的电位。应用于电话线路的任何一个或两者的第一电位使得控制电路将双稳态锁存继电器置于其中电话线路与客户站断开的状态，并且施加到第二电位电话线的导体使得控制电路将双稳态锁存继电器置于电话线与客户站连接的状态。第二电位在幅度或极性上与第一电位不同，优选地具有基本上等于通过中央办公室电池在中央办公室通常施加的电话线的幅度和类似的极性，使得电话线路和客户站在电话系统的正常运行中得到保证。公开了控制电路的四个具体实施例，适用于在中心局选择性地提供第一和第二电位的可切换电源的实施例。

3. 发明授权

US4118597A Method and apparatus for detecting direct currents in a transmission line 失效
标题翻译：用于检测传输线路中的直流电流的方法和装置
公开(公告)号：US4118597A
公开(公告)日：1978-10-03
申请号：US589191
申请日：1975-06-23
申请人： Darryl F. Proctor , Peter T. Skelly , Darrell D. Cole
发明人： Darryl F. Proctor , Peter T. Skelly , Darrell D. Cole
IPC分类号： H04M3/22 , H02H1/02
CPC分类号： H04M3/2272
摘要： An electromagnetic sensing apparatus includes one or more magnetic cores coupled by windings to a pair of transmission line conductors for sensing the presence, and in some cases the magnitude and direction of loop currents flowing in the transmission line, without interfering with the transmission of signal information therealong. In one embodiment, the direction of loop current flow in the transmission line conductors is detected by applying a steady-state electromagnetic bias to the magnetic core to cause a polarity or direction determining asymmetrical response in a sense circuit that is electromagnetically coupled to the core by a sense winding. In another embodiment, a pair of separate magnetic cores are used, each having associated drive windings connected in series with the transmission line conductors, and associated sense windings. The various drive and sense windings are wound on the magnetic cores so as to cause detection of the direct loop current flowing in the transmission line conductors, and at the same time to cause self-cancellation of any electromagnetic coupled of the sensing signal to the drive windings which would otherwise appear as interference or noise on the transmission line.
摘要翻译：电磁感测装置包括一个或多个磁芯，其通过绕组耦合到一对传输线导体，用于感测在传输线中流动的环路电流的存在以及在某些情况下的大小和方向，而不会干扰信号信息的传输那边在一个实施例中，通过向磁芯施加稳态电磁偏置来检测传输线导体中的回路电流流动的方向，以便在通过电磁耦合到芯的感测电路中确定非对称响应的极性或方向感觉绕组。在另一个实施例中，使用一对单独的磁芯，每个磁芯具有与传输线导体串联的相关联的驱动绕组和相关联的感测绕组。各种驱动和感测绕组缠绕在磁芯上，以便检测在传输线导体中流动的直流回路电流，并且同时引起将感测信号耦合到驱动器的任何电磁耦合的自消除否则在传输线路上会出现干扰或噪声的绕组。

4. 发明授权

US4367376A Electronic telephone ringer including anti-bell tap provisions 失效
标题翻译：电子铃声包括防振铃设置
公开(公告)号：US4367376A
公开(公告)日：1983-01-04
申请号：US188064
申请日：1980-09-17
申请人： D. Frederic Proctor , Darrell D. Cole
发明人： D. Frederic Proctor , Darrell D. Cole
IPC分类号： H04M19/04 , H04M1/00
CPC分类号： H04M19/04
摘要： An electronic ringer circuit suitable for use as a replacement for, or an alternative to, the electromagnetic ringer of a telephone set and other station apparatus is disclosed. To eliminate bell tap, each of the disclosed arrangements includes a load impedance that is connected across the output terminals of a rectifier-power supply stage until an acceptable ringing signal is detected. The load impedance is then disconnected and the signal provided by the rectifierpower supply stage activates a tone generator stage that drives a piezoelectric transducer. Various arrangements are provided, including configurations for single-party bridged ringing installations, multi-party divided ringing installations, coded ringing for use in situations wherein a number of stations are located in the same acoustic environment, and a multi-line installation such as a small key telephone installation.
摘要翻译：公开了一种适合用作电话机和其他站设备的电磁振铃器的替代或替代的电子振铃电路。为了消除钟形抽头，所公开的布置中的每一个包括连接在整流器 - 电源级的输出端上的负载阻抗，直到检测到可接受的振铃信号。然后断开负载阻抗，由整流器电源级提供的信号激活驱动压电换能器的音调发生器级。提供了各种布置，包括用于单方桥接振铃装置，多方分离振铃装置，多个站位于同一声环境的情况下使用的编码振铃，以及多线安装小钥匙电话安装。

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