System and method for providing high terminal coupling loss in a

Details System and method for providing high terminal coupling loss in a System and method for providing high terminal coupling loss in a

1997-03-06

1999-11-09

Hsu, Alpus H.

Multiplex communications

Duplex

Communication over free space

370286, 370296, 379389, 379409, 379420, H04B 320, H04M 908

Patent

active

059827556

ABSTRACT:
A method of increasing the terminal coupling loss in a digital half-duplex handsfree terminal is provided. When the terminal receive channel is active an idle code which is effectively zero is transmitted by an idle code generator. When the terminal transmit channel is active a normal speech signal is transmitted. To determine which channel is active, a receive speech signal level is measured at the receive channel input, and a "virtual" transmit speech signal is computed from a signal in the transmit channel before the idle code generator.

REFERENCES:
patent: 3973086 (1976-08-01), May, Jr.
patent: 4110560 (1978-08-01), Leary et al.
patent: 4165449 (1979-08-01), Vachon
patent: 4609788 (1986-09-01), Miller et al.
patent: 4652703 (1987-03-01), Lu et al.
patent: 4979163 (1990-12-01), Erving et al.
patent: 5014294 (1991-05-01), Kromenaker et al.
patent: 5016271 (1991-05-01), Ford
patent: 5075687 (1991-12-01), Chen et al.
patent: 5212685 (1993-05-01), Stilwell, Jr. et al.
patent: 5255316 (1993-10-01), Poirier et al.
patent: 5381475 (1995-01-01), Cavallo
patent: 5544159 (1996-08-01), Ablay
patent: 5544242 (1996-08-01), Robinson
patent: 5548638 (1996-08-01), Yamaguchi et al.
patent: 5771440 (1998-06-01), Sukhu et al.

Affiliated with

Also associated with

Rating

System and method for providing high terminal coupling loss in a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for providing high terminal coupling loss in a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for providing high terminal coupling loss in a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1465796