Boots – shoes – and leggings
Patent
1995-04-27
1996-11-19
Voeltz, Emanuel T.
Boots, shoes, and leggings
36472417, 367 44, 340554, 342 28, G08B 1300
Patent
active
055769772
ABSTRACT:
A filter for eliminating the effects of fluorescent lights on microwave transceivers uses a digital comb filter to eliminate signals at the AC power line frequency and its harmonics. A preferred embodiment has an A/D converter or sampler for sampling and digitizing an output signal from a microwave transceiver. The digitized signal is processed by a processor which implements the digital comb filter by performing a recursion equation. The inventive filter may also have a selector for selecting the sampling frequency. By selecting a desired sampling frequency, the filter may be easily adapted to filter out a different AC power line frequency. Thus, the inventive filter is easily adaptable for use in different countries having different AC power line frequencies.
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Alarm Device Manufacturing Company
Smith Demetra R.
Voeltz Emanuel T.
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