Cross point mixer for a telephone set

Details Cross point mixer for a telephone set Cross point mixer for a telephone set

1992-11-23

1995-10-10

Hofsass, Jeffery A.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

379335, 379368, 379291, 379292, H04M 126

Patent

active

054577403

ABSTRACT:
Disclosed is a cross point mixer including a cross point switch and a mixing circuit provided on the output side. The cross point switch includes n.times.m switches arranged in a matrix manner. Each of the switches corresponds to one of a plurality of n input terminals receiving signals, and corresponds to one of a plurality of m output terminals outputting signals. When on, each of the switches forms a signal transmission path which connects a corresponding input terminal with a corresponding output terminal. The mixing circuit provided on the output side receives signals from the n switches correspondingly associated with the output terminal, and subjects the signals to mixing for output to the output terminal.

REFERENCES:
patent: 3859471 (1975-01-01), Danielsen et al.
patent: 3872439 (1975-03-01), Salam
patent: 4327255 (1982-04-01), Suszylo
patent: 4635250 (1087-01-01), Georgiou
patent: 4635288 (1987-01-01), Stadius
patent: 5081668 (1992-01-01), Ito
patent: 5113431 (1992-05-01), Horn
patent: 5220597 (1993-06-01), Horiuchi

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