Operation indicative background noise in a digital receiver

Details Operation indicative background noise in a digital receiver Operation indicative background noise in a digital receiver

1991-09-13

1994-07-05

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375104, H04B 1700, H04B 110

Patent

active

053274571

ABSTRACT:
Providing a background noise generator in a digital receiver to produce a small, controlled amount of background noise in the audible output of the receiver to provide an indication to the operator of the continued operation of the receiver. A small amount of noise is generated, either separately or in the RF portion of the receiver, and introduced into the receiver, either in the audio portion or the digital portion, as background noise to provide the ambience of a standard receiver.

REFERENCES:
patent: 3174150 (1965-03-01), Sferrazza et al.
patent: 4996717 (1991-02-01), Koenig
patent: 5151922 (1992-09-01), Weiss
An article entitled "Graceful Degradation of Digital Audio Transmission Systems", by K. A. Schouhamer Immink, Philips Research Laboratories, 5600 JA, Eindhoven, The Netherlands, from J. Audio Eng. Soc., vol. 36, No. 12, 1988, Jan. and Feb.

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