Operation indicative background noise in a digital receiver
AssigneeMotorola, Inc.
InventorRaymond J. Leopold
Life of this patent
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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.
Claims9
In a digital receiver, apparatus for providing operation indicative background noise comprising:
- a digital receiver including an RF portion, a digital portion and an audio portion, the digital portion being coupled to receive signals from the RF portion and provide the signals to the audio portion;
- and
- a background noise generator having a background noise output coupled to one of the digital or the audio portions to provide background noise indicative of the operation of the receiver.
In a digital communication system, apparatus for providing operation indicative background noise comprising:
- a digital receiver including an antenna, an RF portion connected to the antenna, a digital portion connected to receive signals from the RF portion, and an audio portion connected to the digital portion;
- and
- an amplitude controllable noise generator having a control signal input coupled to the RF portion and a signal output coupled to the digital portion, to provide background noise indicative of the operation of the receiver, the noise generator having the control signal input coupled to the RF portion to control the amplitude of the background noise in accordance with received signals.
A method of improving operator ambience in a digital receiver comprising the steps of providing a digital receiver including an RF portion, a digital portion and an audio portion coupled together to receive transmitted signals and produce an audio output in response thereto, generating a background noise signal and supplying the generated background noise signal to the digital receiver to produce background noise in the audio output.
Dependencies are inferred from the claim text.