公开(公告)号：US3903482A

公开(公告)日：1975-09-02

申请号：US47689774

申请日：1974-06-06

Applicant: ERICSSON TELEFON AB L M

Inventor： PAUSINI FERRUCCIO ,  SQUARTINI GIORGIO

IPC: H03L7/14 ,  H03B3/04

CPC classification number: H03L7/148

Abstract: In a phase locked loop synchronized oscillator wherein a phase detector compares an oscillator frequency and a synchronizing frequency to derive a voltage for controlling the oscillator frequency there is provided a memory circuit between the phase detector and the oscillator for holding the instantaneous value of the detector output and a blocking circuit for sensing for interferences in the control voltage to prevent the memory from changing the value hold before the interference occurred.

Abstract translation: 在锁相环同步振荡器中，相位检测器比较振荡器频率和同步频率以导出用于控制振荡器频率的电压，在相位检测器和振荡器之间提供存储电路，用于保持检测器输出的瞬时值 以及阻塞电路，用于感测控制电压中的干扰，以防止存储器在发生干扰之前改变保持值。

公开(公告)号：US3890566A

公开(公告)日：1975-06-17

申请号：US42997874

申请日：1974-01-02

Applicant: ERICSSON TELEFON AB L M

Inventor： NORDBLAD SVEN SIGURD ,  SVENSSON KARL-ERIK

IPC: B29C37/00 ,  B29C47/88 ,  G01R31/02 ,  H01B13/00 ,  H01B13/06 ,  G01R31/16 ,  F26B13/24

CPC classification number: G01R31/022 ,  B29C37/0092 ,  B29C47/0014 ,  B29C47/0016 ,  B29C47/88 ,  B29L2031/3462 ,  H01B13/0036 ,  H01B13/06

Abstract: A method and an arrangement for voltage testing and drying an insulated electrical conductor. The insulated conductor is, after the extrusion process, brought through a pipe which is partly closed by a lead-in attached to each end of the pipe. The pipe contains a number of metal spheres which surround the conductor running through the pipe. The movement of the conductor causes the spheres to move around the conductor thus drying the same. An outer voltage source can be connected to a metallic strip inside the pipe and, due to the metal spheres, a test voltage is applied across the insulation of the wire.

Abstract translation: 一种用于电压测试和干燥绝缘电导体的方法和装置。 绝缘导体在挤出过程之后通过连接到管的每个端部的引入部分封闭的管道。 管道包含围绕穿过管道的导体的多个金属球体。 导体的运动导致球体围绕导体移动，从而使其干燥。 外部电压源可以连接到管道内的金属条，并且由于金属球体，跨越导线的绝缘层施加测试电压。

公开(公告)号：US3886755A

公开(公告)日：1975-06-03

申请号：US36742573

申请日：1973-06-06

Applicant: ERICSSON TELEFON AB L M

Inventor： LUNDIN HOLGER ALEXANDER

IPC: E02F5/10 ,  H02G1/06 ,  A01B3/64 ,  A01B13/08 ,  F16L1/00

CPC classification number: H02G1/06

Abstract: There is disclosed an assemblage for laying an underground cable. This assemblage includes a movable but stationarily operated power plant, a digging tool and a cable laying tool. The digging tool and the cable laying tool are connected to the power plant so that they can be extended from the power plant to a selected distance and are then pulled back to the power plant. While being so pulled back the digging tool digs a trench and the cable laying tool feeds cable to be laid into the trench as the same is being formed. A brake is mounted on the cable laying tool and co-acts with the same so as to avoid slack in the cable while the same is being laid.

Abstract translation: 公开了用于铺设地下电缆的组合件。 该组合件包括可移动但是静态操作的发电厂，挖掘工具和电缆敷设工具。 挖掘工具和电缆铺设工具连接到发电厂，使其可以从发电厂延伸到选定的距离，然后被拉回到发电厂。 虽然如此

公开(公告)号：US3883686A

公开(公告)日：1975-05-13

申请号：US39940073

申请日：1973-09-20

Applicant: ERICSSON TELEFON AB L M

Inventor： JACOBAEUS ANTON CHRISTIAN ,  WERN LARS AKE

IPC: H04N7/26 ,  H04N1/38

CPC classification number: H04N19/00

Abstract: The invention relates to a method and a device for reducing the effect of a loss of information during transmission at compressed band width, particularly during transmission at compressed band width of a PCM-signal. Each of the serially generated PCM-words indicates the light intensity in picture elements that are serially scanned in a TV-frame, the number of transmitted PCMwords in each TV-frame being less than the number of generated PCM-words. According to the invention the effect of the loss of picture information is reduced in such a manner that when band width comprsssion is made TV-line by TV-line the loss will alternately occur on the left and right edges of the TV-lines on the screen viewed downwards in consecutive order and when band width compression is made TV-field by TV-field the loss will alternately occur on the upper and lower edges of the screen, the loss of picture information only appearing as a lesser degree of resolution along the respective edges of the screen.

Abstract translation: 本发明涉及一种用于在压缩带宽的传输过程中减少信息丢失的影响的方法和装置，特别是在PCM信号的压缩带宽传输期间。 串行生成的PCM字中的每一个表示在TV帧中串行扫描的像素中的光强度，每个TV帧中发送的PCM字的数量小于生成的PCM字的数量。 根据本发明，减少图像信息丢失的效果，使得当通过TV线使带宽压缩成为TV线时，丢失将交替发生在TV线的左侧和右边缘上 屏幕以连续顺序向下观看，当通过电视场进行带宽压缩时，屏幕的上下边缘将交替出现损失，图像信息的丢失仅沿着屏幕的较小程度出现 屏幕的各个边缘。

公开(公告)号：US3870955A

公开(公告)日：1975-03-11

申请号：US36198673

申请日：1973-05-21

Applicant: ERICSSON TELEFON AB L M

Inventor： OUVRIER GUNTHER

IPC: H04Q11/02 ,  H04J3/14

CPC classification number: H04Q11/02

Abstract: In a telecommunication system having a central control unit and a telecommunication network wherein there are a plurality of stations interconnected by bidirectional primary links used during normal fault free operation and spare sections used when there is a fault in at least one of the primary links and wherein the central control unit initiates the changeover to selected spare sections upon detection of a fault, there is switchover apparatus in at least one of the stations and controlled by the central control unit for switching connections from primary links to space sections utilized by sub-routes.

Abstract translation: 在具有中央控制单元和电信网络的电信系统中，其中存在通过在正常无故障运行期间使用的双向主链路互连的多个站和当至少一个主链路中存在故障时使用的备用区段，并且其中 中央控制单元在检测到故障时启动对所选备用部分的切换，在至少一个站中有切换装置，并由中央控制单元控制，用于切换从主要链路到由子路由使用的空间部分的连接。

公开(公告)号：US3860465A

公开(公告)日：1975-01-14

申请号：US32851573

申请日：1973-02-01

Applicant: ERICSSON TELEFON AB L M

Inventor： MATZNER EVA ,  STERNBECK OLAF

IPC: H01L21/00 ,  H01L29/8605 ,  H01L7/50

CPC classification number: H01L29/8605 ,  H01L21/00 ,  Y10S148/051 ,  Y10S148/085 ,  Y10S148/136

Abstract: The invention refers to a method for obtaining an accurately determined high resistance in a resistor produced in a single crystalline substrate in the form of a diffused region limited in length, width and depth direction, which region is covered with an oxide layer and is provided with a first and a second window in the oxide layer for connection of two terminal contacts. According to the invention, a third window is made in the oxide layer on the top of the diffused region by means of a conventional photo-resist and etching technique whereupon the diffused region is etched in the depth direction through the third window for a predetermined time period during which such a quantity of material is removed that the resistance of the quantity of material remaining in the diffused region, measured between the first and second window, will be equal to a predetermined resistance value.

Abstract translation: 本发明涉及一种在长度，宽​​度和深度方向上限制的扩散区形式的单晶衬底中制造的电阻器中精确确定的高电阻的方法，该区域被氧化物层覆盖，并且具有 用于连接两个端子触点的氧化物层中的第一和第二窗口。 根据本发明，通过常规的光刻胶和蚀刻技术在扩散区域顶部的氧化物层中形成第三窗口，于是扩散区域沿深度方向通过第三窗口蚀刻预定时间 消除这样的材料量的时间段，即在第一和第二窗口之间测量的在扩散区域中剩余的材料的数量的电阻将等于预定的电阻值。

公开(公告)号：US3848093A

公开(公告)日：1974-11-12

申请号：US33640273

申请日：1973-02-28

Applicant: ERICSSON TELEFON AB L M

Inventor： EDSTROM N

IPC: H04B7/212 ,  H04J3/17 ,  H04J5/00

CPC classification number: H04J3/172 ,  H04B7/2121

Abstract: The invention relates to a method and a device for increasing the transmission capacity of a time division synchronous satellite telecommunication system in which each ground station has a control processor which is arranged to assign continuously time slots out of a time slot pool to the ground stations in proportion to their varying demands for transmission capacity. According to the invention, it is possible to apply speech interpolation not only to such time slots that are constantly assigned to the ground stations and are transmitted via permanently assigned transmission channels but also to reassignable time slots of the pool, transmitted via temporarily assigned transmission channels.

Abstract translation: 本发明涉及一种用于提高时分同步卫星电信系统的传输容量的方法和装置，其中每个地面站具有一个控制处理器，该控制处理器被设置成将时隙池中的时隙连续地分配给地面站 与传输能力的不同要求成比例。 根据本发明，不仅可以将语音内插应用于经常被分配给地面站并经由永久分配的传输信道发送的时隙，而且还可以经由临时分配的传输信道发送的可重新分配的时隙 。

公开(公告)号：US3844513A

公开(公告)日：1974-10-29

申请号：US29425172

申请日：1972-10-02

Applicant: ERICSSON TELEFON AB L M

Inventor： BERNHARDSON R ,  LUNDFELDT K ,  ULLERFORS K

IPC: B61K9/12 ,  G01B7/28

CPC classification number: G01B7/282 ,  B61K9/12

Abstract: A system and method for detecting the presence of wheel flats on rail vehicles. The system includes a voltage source, one side of which is connected to a first rail of a track and the other to a second rail extending parallel with the first rail in a manner whereby the current circuit includes the rim of the wheel being sensed. The connection points are spaced in the longitudinal direction of the track such that the distance between the connection points is shorter than the smallest axle distance occurring in the vehicle. The circuit also includes an impedance and a detecting means connected over a portion of the impedance to sense changes in voltage resulting from a break in the circuit caused by a wheel flat.

Abstract translation: 一种用于检测轨道车辆上车轮平面的存在的系统和方法。 该系统包括电压源，其一侧连接到轨道的第一轨道，而另一侧连接到与第一轨道平行延伸的第二轨道，从而电流回路包括被感测的车轮轮缘。 连接点在轨道的纵向方向上间隔开，使得连接点之间的距离短于在车辆中出现的最小车轴距离。 该电路还包括一个阻抗和一个检测装置，它连接在阻抗的一部分上，以感测由于轮子平坦导致的电路中断引起的电压变化。

公开(公告)号：US3810155A

公开(公告)日：1974-05-07

申请号：US21761072

申请日：1972-01-13

Applicant: ERICSSON TELEFON AB L M

Inventor： WIDL W ,  KARLSSON S

IPC: H04L25/49 ,  H04L3/00

CPC classification number: H04L25/4908

Abstract: The present invention relates to a method of coding a data flow carrying binary information in a local transmission equipment. The data flow comprises two kinds of data signal elements and control signal elements, whereby an optional polarity on the line terminal of the transmission can be selected. The coding method uses four different binary code words 0101, 1010, 0011 and 1100, so that the first kind of the data elements corresponds to one of the code words 0101 or 1010 and the other kind of the code words corresponds to one of the code words 0011 and 1100. One or the other of the code words is selected so that more than two of the code words will not follow one another upon the coding of more than two data elements of the same kind.

Abstract translation: 本发明涉及在本地传输设备中编码携带二进制信息的数据流的方法。 数据流包括两种数据信号元件和控制信号元件，由此可以选择传输线路终端上的可选极性。 编码方法使用四个不同的二进制码字0101,1010，0011和1100，使得第一类数据元素对应于代码字0101或1010中的一个，并且另一种类型的码字对应于码中的一个 单词0011和1100.选择一个或另一个代码字，使得在编码多于两个相同类型的数据元素时，两个以上的代码字将不会彼此跟随。

公开(公告)号：US3792398A

公开(公告)日：1974-02-12

申请号：US3792398D

申请日：1973-05-17

Applicant: ERICSSON TELEFON AB L M

Inventor： NORLIN A ,  OLSSON A ,  STRID T

IPC: H01F5/04 ,  H01H50/44 ,  H01F15/10

CPC classification number: H01F5/04 ,  H01H50/443

Abstract: An end plate for a bobbin comprising a L-shaped piece of an insulating material the first branch of which having a through hole for a core and a number of grooves for connecting wires to windings of the bobbin and the second branch of the end plate having notches for placing soldering tabs, each groove in the first branch emerging into a notch in the other branch, the emerging point having the form of a narrow mouth which the connecting wires pass on their way to the soldering tabs and which after the bobbin windings are completed are closed, thus locking connecting wires to the bottom of the notches.

Abstract translation: 一种用于筒管的端板，包括一个绝缘材料的L形件，其第一分支具有用于芯的通孔和用于将线连接到线轴的绕组和端板的第二分支的多个槽， 用于放置焊接接头的凹口，第一分支中的每个凹槽在另一个分支中突出到凹口中，出现点具有窄口形式，连接线在通向焊接接头的路上通过，并且在绕组绕组之后 完成关闭，从而将连接线锁定到凹口的底部。