公开(公告)号：EP0004182B1

公开(公告)日：1982-01-06

申请号：EP79300342.7

申请日：1979-03-07

申请人： THE POST OFFICE

发明人： Groves, Ian Stanley ,  Guard, David Robert ,  Bunting, John Graham ,  Rowlands, Christopher Edmund ,  Powter, Edwin John ,  Holmes, David William James ,  Trott, Graham John

IPC分类号： H04M3/56

CPC分类号： H04M3/56 ,  H04M3/569

公开(公告)号：EP0040954A1

公开(公告)日：1981-12-02

申请号：EP81302244.9

申请日：1981-05-20

申请人： THE POST OFFICE

发明人： Willetts, Dennis ,  Denman, Derek ,  Boomer, Michael John

IPC分类号： H04Q7/04

CPC分类号： H04W84/022

摘要： A countrywide or nationwide radiopaging system which enables a subscriber situated substantially anywhere in a country to be contacted by a caller also located anywhere in that country includes at least four paging control equipments (3) located in different geographical regions and each connected to the public switched telephone network (6) of its own region. Each paging control equipment controls the operation of a number of zone transmission controllers (4) and through them transmitters covering all the zones in its own region, the zones throughout the regions being associated into three sets of zones and arranged so that zones of any one set are always separated from any other zone in said one set by at least one zone from one of the other two sets whereby simultaneous transmissions at a particular frequency in zones in said one set do not interfere with one another. The radiopaging system also includes a high speed data intercommunication means (5) to enable intercommunication between all of the paging control equipments (3) directly or via one or more intermediate paging control equipments (3) to enable paging calls received by any one of the paging control equipments (3) and to enable the paging call codes generated by any one of the paging control equipments (3) to be communicated to any other paging control equipment (3) for transmission over any of the zones controlled by the other paging control equipment (3).

摘要翻译： 一个全国范围或全国的放射系统，其使位于国家大致任何地方的用户能够与位于该国家的任何地方的呼叫者联系，包括至少四个寻呼控制设备[3]，位于不同的地理区域，并且每个寻呼控制设备连接到公共交换机 电话网络[6]。 每个寻呼控制设备控制多个区域传输控制器[4]的操作，并通过它们覆盖其自身区域中的所有区域的发射机，整个区域中的区域被分为三组区域，并且布置成使得任何一个区域 总是与所述一组中的任何一个区域中的任何其他区域分开，其中至少一个区域与其他两个组中的一个区分开，从而在所述一组中的区域中的特定频率的同时传输不会彼此干扰。 该放射系统还包括一个高速数据通信装置[5]，可以直接或经由一个或多个中间寻呼控制设备[3]来实现所有寻呼控制设备[3]之间的相互通信，以便能够通过任何一个 寻呼控制设备[3]，并且使得任何一个寻呼控制设备[3]生成的寻呼呼叫代码被传送到任何其他寻呼控制设备[3]，以便通过由另一个寻呼控制器控制的任何区域进行传输 设备[3]。

公开(公告)号：EP0004183B1

公开(公告)日：1981-09-16

申请号：EP79300343.5

申请日：1979-03-07

申请人： THE POST OFFICE

发明人： Beales, Keith John ,  Day, Clive Richard ,  Newns, George Reginald

IPC分类号： C03B37/02

CPC分类号： C03B37/0235 ,  C03B2205/56

公开(公告)号：EP0033591A1

公开(公告)日：1981-08-12

申请号：EP81300147.6

申请日：1981-01-14

申请人： THE POST OFFICE

发明人： Cantwell, Brian David

IPC分类号： H04L11/08 ,  G06F11/32

CPC分类号： H04M11/085 ,  H04L43/0817

摘要： A monitoring apparatus for monitoring the access ports of a viewdata computer comprises a microprocessor 30 and associated RAM 31. Information indicative of the condition of the access ports is fed into the RAM 31 underthe control of the microprocessor 30 via input/output latches 35 which are linked to the ports. An interface circuit 37 periodically assembles a message relating to the condition of a port as indicated by the information stored in the RAM 31 for transmission to a monitoring centre where the information can be displayed on a conventional viewdata terminal

摘要翻译： 用于监视观看数据计算机的访问端口的监视装置包括微处理器30和相关联的RAM 31.表示访问端口状态的信息经由输入/输出锁存器35在微处理器30的控制下被馈送到RAM 31中， 链接到端口。 接口电路37周期性地组装与由存储在RAM31中的信息所指示的端口条件有关的消息，以传送到监视中心，其中信息可以在常规视图数据终端上显示。

公开(公告)号：EP0000267B1

公开(公告)日：1981-07-08

申请号：EP78300070.6

申请日：1978-06-22

申请人： THE POST OFFICE

发明人： Matthews, Michael Robert ,  Newman, David Henry ,  Smith, David Robert ,  Steventon, Alan Geoffrey

IPC分类号： H01S3/19 ,  H01S3/06

CPC分类号： H01S5/20 ,  H01S5/10 ,  H01S5/1032 ,  H01S5/14 ,  H01S5/2059

公开(公告)号：EP0025646A1

公开(公告)日：1981-03-25

申请号：EP80302845.5

申请日：1980-08-18

申请人： THE POST OFFICE

发明人： France, Paul William

IPC分类号： G01N3/20 ,  G01M11/08

CPC分类号： G01N3/08 ,  G01M11/088 ,  G01N3/20 ,  G01N33/386 ,  G01N2203/0248 ,  G01N2203/028

摘要： A method of proof testing an optical glass fibre 1 by pulling it around a free roller 2 whose radius is sufficiently small to impart the strain necessary to detect fibres whose surface or near surface flaws weaken the fibre below a required strength. Proof testers are disclosed incorporating, single rollers, a set of three parallel rollers and a jig holding four sets of three rollers. Proof testers incorporating the extra rollers whose axes are at different angles are shown to more thoroughly explore the surface of the fibre for cracks.

摘要翻译： 通过将光学玻璃纤维1卷绕在其半径足够小的自由辊2上来测试光学玻璃纤维1的方法，以赋予检测其表面或近表面缺陷使纤维弱于所需强度所需的纤维所需的应变。 公开了一种验证测试器，其中包括单个辊子，一组三个平行的辊子和夹持四组三个辊子的夹具。 结合了轴不同角度的额外辊的验证测试仪可以更彻底地探索纤维表面的裂纹。

公开(公告)号：EP0022630A1

公开(公告)日：1981-01-21

申请号：EP80302129.4

申请日：1980-06-25

申请人： THE POST OFFICE

发明人： Else, Ronald ,  O'Sullivan, Michael Anthony

IPC分类号： H01G7/02

CPC分类号： H01G7/023

摘要： In previously proposed arrangements for charging an electret foil the electret charge implanted varies over the area of the foil. In order to promote more even charging of the foil, the method of the invention subjects the foil (11) to a progressively increasing electric field. One form of apparatus used to carry out the method has rollers (2, 3, 4, 5 and 6) at progressively higher potentials and electric fields are applied across the foil (11) between these rollers and a metallised layer (12) on the rear face of the foil which is earthed by a roller (7).

公开(公告)号：EP0020827A1

公开(公告)日：1981-01-07

申请号：EP79301155.2

申请日：1979-06-15

申请人： THE POST OFFICE

发明人： Gilliland, John Donald

IPC分类号： H04B3/46 ,  H04L1/00

CPC分类号： H04L25/061 ,  H04L1/24

摘要： A monitor for monitoring the performance of a digital transmission system has three level sensors 14, 15, 16 for sensing at decision instants the level of a signal derived from a transmitted signal. A first of the level sensors 14 has its threshold set at a level corresponding substantially to the eye diagram amplitude, a second 15 has its threshold set near the upper level of the eye diagram amplitude, and the third 16 has its threshold set near the lower level of the eye diagram amplitude. The outputs from the level sensors 14, 15, 16 are connected to logic circuitry which is arranged to energise an alarm 28 whenever the upper or lower eye amplitude level is between the thresholds of the second and third level sensors.

摘要翻译： 用于监视数字传输系统的性能的监视器具有三个电平传感器14,15,16，用于在判定时刻感测从发射信号导出的信号的电平。 电平传感器14中的第一个具有其阈值设置在基本上与眼图幅度相对应的水平，第二个15的阈值设置在眼图幅度的上限附近，而第三个16的阈值设定在靠近眼图幅度的下限 眼图幅度水平。 来自电平传感器14,15,16的输出连接到逻辑电路，逻辑电路被布置成每当上眼睛或下眼睛的振幅水平在第二和第三水平传感器的阈值之间时，激励报警器28。

公开(公告)号：EP0020036A1

公开(公告)日：1980-12-10

申请号：EP80301481.0

申请日：1980-05-07

申请人： THE POST OFFICE

发明人： Whitehead, Graham Keith ,  Bates, Roger John

IPC分类号： G02B5/16 ,  H02G3/04

CPC分类号： G02B6/4439 ,  G02B6/4407 ,  G02B6/4495

摘要： A communications cable based on optical fibres comprises a core 2 with external helical channels 13. The fibres 6 in the channels are accessible through removable parts 15 of an outer sheath 4.

公开(公告)号：EP0014081A1

公开(公告)日：1980-08-06

申请号：EP80300174.2

申请日：1980-01-18

申请人： THE POST OFFICE

发明人： Hines, Howard Edward

IPC分类号： H01R4/24

CPC分类号： H01R4/2445 ,  H01R4/245

摘要： An electrical termination assembly includes a termination 1 formed by a flat resilient plate split into three limbs 4, 5 and 6 by slots 2. A wire 15 is threaded between the outer limbs 4 and 5 and the middle limb 6 and as the wire is urged into the termination 1, edges of the limbs 4, 5 and 6 cut through and insulating coating 17 of the wire and any oxide film and into the conductor 16 of the wire. The limbs 4 and 5 splay apart in the direction of a plane containing the termination 1 and the limbs 4 and 5 also splay apart from the middle limbs 6 in a direction transverse to the plane. This provides the limbs with two directions of movement and this terminating assembly is particularly useful when the conductor 16 is made from aluminium.

摘要翻译： 电气终端组件包括由平坦的弹性板形成的终端1，该平板弹性板通过槽2分成三个分支4,5和6.线15在外肢4和5与中间肢6之间被螺纹连接，并且当电线被推动时 在端子1中，四肢和四边形的边缘切断并将线材的绝缘层17和任何氧化膜绝缘到导线16中。 肢体4和5在包含终端1的平面的方向上分开，并且四肢4,5也沿着与平面横切的方向从中间肢6伸出。 这为肢体提供了两个运动方向，并且当导体16由铝制成时，该端接组件特别有用。