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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 35. Отображено 35.
30-10-1980 дата публикации

Subscriber circuit

Номер: DE2853167C2
Принадлежит: SIEMENS AG

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08-04-1981 дата публикации

Circuit arrangement for determining the switching state of a subscriber line in telephone exchanges

Номер: EP0026411A1
Принадлежит: SIEMENS AG

A circuit arrangement for determining the connection condition of a plurality of subscriber lines in a telecommunication network, each of the subscriber lines having two wires extending between a subscriber station and a subscriber line interface circuit and being connected via respective resistors to the two poles of a DC voltage source. For a group of such subscriber lines the operating conditions are consecutively monitored by sampling the voltage occurring at two sampling points of both wires by a respective multiplexor and passing it to a comparator having inputs which are temporarily inter-connected by filter capacitors each separately associated with a respective subscriber line interface circuit. In addition, the comparator receives a reference voltage determining a threshold voltage. For ground key indication one of the sampling points is connected to one input of a further comparator which second input is supplied by a corresponding further reference voltage. The output signals of both comparators are presented at a central control unit for evaluation. When monitoring a ground key indication the output signal of the second comparator, however, is passed only if presupposed signals indicating correct operation, i.e. closed loop condition are present.

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15-01-1992 дата публикации

Method and circuit for setting subscriber line balance impedances of programmable hybrids

Номер: EP0286835B1
Принадлежит: SIEMENS AG

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27-03-1997 дата публикации

Synchronous operation setting method for coaxial cable path

Номер: DE19535361A1
Принадлежит: SIEMENS AG

The signal transmission time between an interface device and the interfaces which are connected via a base radio station to the coaxial cable is measured. A time delay is set in the radio transmission frame in the interfaces w.r.t. a synchronisation signal according to the measured value so that all the base stations are synchronised. The base stations determine at specific intervals whether their radio bands still have the set time delay. The external clock and internal synchronisation signal are derived from a signal transmitted via satellite.

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15-07-1988 дата публикации

CIRCUIT ARRANGEMENT FOR TRANSMISSION OF SIGNALS BETWEEN SUBSCRIBER LINES AND AT LEAST ONE TRANSMISSION LINE OF AN INTEGRATED SERVICES TELECOMMUNICATION SYSTEM.

Номер: ATE35494T1
Принадлежит: SIEMENS AG

1. A circuit arrangement for the transmission of signals between subscriber lines (Ltg1 to Ltgn) and at least one transmission line (e.g. PCM3), which is connected to a switching device, of a service-integrated telecommunications system, in which control - and/or data signals occur on the subscriber lines at a first, relatively low transmission rate, and occur on the respective transmission line in time slots of time channels which comprise time slots which occur in cyclic repitition in consecutive pulse frames and which permit the transmission of signals at a second transmission rate which is higher than the first transmission rate, and in which the subscriber lines (Ltg1 to Ltgn) are connected to the respective transmission line (e.g. PCM3) via a concentrator (K) which on the one hand emits the signals, with which it is supplied via the individual subscriber lines (Ltg1 to Ltgn), via the respective transmission line in time channels available for the transmission of said signals, and which on the other hand forwards the signals with which it is supplied on the respective transmission line (e.g. PCM3) in time channels available for the transmission of said signals to the respective subscriber line (e.g. Ltg1), characterized in that on the respective transmission line (e.g. PCM3) only one respective time channel of the time channels provided for the signal transmission is available for the transmission of control signals and data signals in each transmission direction.

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11-09-1980 дата публикации

Teilnehmeranschlussschaltung mit Erdtasten- und Isolationsfehlerindikation

Номер: DE2911517B1
Принадлежит: SIEMENS AG

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16-03-1995 дата публикации

Disposicion de circuito para la atenuacion de tensiones perturbadoras superpuestas a la corriente de alimentacion para terminales de abonados de un sistema telefonico digital de multiplexacion temporal.

Номер: ES2067093T3
Принадлежит: SIEMENS AG

UN INTERRUPTOR REGULADOR R ES UN GRUPO COORDINADO POR INTERRUPTORES DEL LUGAR DE CORTE DE LINEA DEL ABONADO (DE SLICI HASTA SLICN). LA DENSIDAD A REGULAR SE ALIMENTA MEDIANTE UNA TENSION DE ALIMENTACION QUE PRESENTA INTERFERENCIAS Y QUE PASAN A LA FUENTE DE CORRIENTE DE ALIMENTACION (TIERRA, UB). COMO DIMENSION DE AJUSTE ENVIA UNA TENSION DE INTERFERENCIA CORRESPONDIENTE A LA TENSION DE COMPENSACION QUE SE SUPERPONE SOBRE UN TRANSMISOR (U) CON UNA RELACION DE TRADUCCION GRANDE , CUYO BOBINADO SECUNDARIO (N2) QUE PRESENTA UN NUMERO MENOR DE ESPIRAS, PASA POR LA SUMA DE LA CORRIENTE DE ALIMENTACION QUE SE SUPERPONE A LA CORRIENTE DE ALIMENTACION QUE PRESENTA INTERFERENCIAS.

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05-01-1989 дата публикации

[UNK]

Номер: DE3035287C2
Принадлежит: SIEMENS AG

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14-03-1991 дата публикации

[UNK]

Номер: DE3304436C2
Принадлежит: SIEMENS AG

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