Method and system for determination of signal/noise ratio of tel

Details Method and system for determination of signal/noise ratio of tel Method and system for determination of signal/noise ratio of tel

1995-01-12

1996-06-11

Chan, Jason

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379 93, 379 98, H04M 1100

Patent

active

055264107

ABSTRACT:
The signal to noise ratio of a telephone transmission line used for facsimile is determined in one preferred embodiment by notch filtering the received CED signal at the calling unit. The total CED signal received representing signal plus noise (S+N) is processed with the filtered CED signal representing noise N according to 20.multidot.log ([(S+N)-N]/N.

REFERENCES:
patent: 3394222 (1968-07-01), Townsend
patent: 3814868 (1974-06-01), Bradley
patent: 4630126 (1986-12-01), Kaku et al.
patent: 5166954 (1992-11-01), Grizmala et al.
patent: 5299257 (1994-03-01), Fuller et al.

Affiliated with

Also associated with

Rating

Method and system for determination of signal/noise ratio of tel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for determination of signal/noise ratio of tel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for determination of signal/noise ratio of tel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-360055