Signal processsing circuit for a telephone set

Details Signal processsing circuit for a telephone set Signal processsing circuit for a telephone set

1987-10-13

1988-12-13

Dwyer, James L.

Telephonic communications

Substation or terminal circuitry

Sidetone control or hybrid circuit

379395, H04M 158

Patent

active

047916389

ABSTRACT:
A signal processing circuit for a telephone set. This circuit includes signal sending means that sends to a transmission line a sound signal produced from a telephone transmitter, a first adding circuit that adds the signal from the transmission line to the sound signal from the transmitter, an inverting circuit that phase-inverts the output signal from the first adding circuit, an impedance element provided between the transmission line and the output of the inverting circuit, and a second adding circuit that adds the output sound signal from the transmitter to the output signal from the inverting means and supplies the resulting composite signal to a telephone receiver.

REFERENCES:
patent: 4506114 (1985-03-01), Burgin

Affiliated with

Also associated with

Rating

Signal processsing circuit for a telephone set does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal processsing circuit for a telephone set, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processsing circuit for a telephone set will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2201286