Transmission system with tap devices which reduce the effects of

Details Transmission system with tap devices which reduce the effects of Transmission system with tap devices which reduce the effects of

1996-09-30

1999-12-21

Grant, Chris

Telecommunications

Interference signal transmission

348 12, H04N 7173

Patent

active

060060662

ABSTRACT:
A transmission system with a number of tap devices (1), which are connected to a distribution network (9). Subscriber terminals (11) can be connected to each tap device (1) present in a building (10), by means of a private, in-house network (13); these terminals can send upstream signals (AUF) to a center (8). A tap device (1) has first means (4, 5, 6) which attenuate an upstream signal (AUF) supplied to a second port (3) with a specified attenuation factor (a) and send it to the first port (2). The upstream signal (AUF) is sent out by a subscriber terminal (11) with a signal level which is selected so that after the attenuation, the upstream signal (AUF) has a level specified in the distribution network (9).

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Patent Abstracts of Japan, vol. 009, No. 159 (E-326), Jul. 4, 1985 & JP 60 037839 A (Deietsukusu Antena KK), Feb. 27, 1985.

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