Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Patent
1996-09-24
1998-08-11
Urban, Edward F.
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
455306, 455308, 455222, H04B 116
Patent
active
057941360
ABSTRACT:
A noise blanker (400) suitable for use with a radio receiver (500) having a track and hold unit (509) includes an impulse noise detector (401), a low pass filter (404) that is coupled to the impulse noise detector, and a first amplitude threshold detector (406) that is coupled to the output of the low pass filter and to the input of the track and hold unit. In one embodiment, this noise blanker is configured in conjunction with a radio receiver to yield a radio receiver that substantially minimizes the impact of noise impulses on resulting processed audio. In one embodiment, a second amplitude threshold detector (512) and a repetition rate threshold detector (513) are additionally utilized to allow gating of the internal signal processing paths of the radio receiver in conjunction with operation of the track and hold unit.
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Buchwald Gregory J.
Ecklund Lawrence M.
Espe Roy H.
Banks-Harold Marsha D.
Motorola Inc.
Parmelee Steven G.
Stockley Darleen J.
Urban Edward F.
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