Conference circuit with digital-analog and analog-digital conver

Details Conference circuit with digital-analog and analog-digital conver Conference circuit with digital-analog and analog-digital conver

1978-07-19

1979-07-10

Cooper, William C.

H04M 356

Patent

active

041608780

ABSTRACT:
A circuit arrangement is disclosed for converting digital signals into analog signals and analog signals into digital signals. The circuit arrangement is used as a conference set for use by individual subscribers on a multiplex line. Digital signals of all subscribers are consecutively converted into analog signals and an analog summation signal is formed therefrom. This summation signal is again converted back into a digital signal and can be multiply transmitted as such. Alternatively, a number n of circuit arrangements are provided for a maximum number n of subscribers. Each of the circuit arrangements converts digital signals of n-1 conference subscribers (excluding an allocated subscriber) into analog signals and forms an analog summation signal therefrom. This analog summation signal is converted back into a digital signal which is transmitted in a time slot allocated to the allocated conference subscriber to which the circuit arrangement is allocated.

REFERENCES:
patent: 4048449 (1977-09-01), Natebusch
patent: 4049920 (1977-09-01), Knollman
patent: 4054755 (1977-10-01), Lee et al.
patent: 4056820 (1977-11-01), Hofer
patent: 4109111 (1978-08-01), Cook
patent: 4119807 (1978-10-01), Nahay

Affiliated with

Also associated with

Rating

Conference circuit with digital-analog and analog-digital conver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conference circuit with digital-analog and analog-digital conver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conference circuit with digital-analog and analog-digital conver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-739766