Scanning receiver with stored frequencies

Details Scanning receiver with stored frequencies Scanning receiver with stored frequencies

1993-07-01

1995-10-10

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551613, 4551861, H04B 116

Patent

active

054578167

ABSTRACT:
Receivable frequencies based on a predetermined instruction signal are scanned in a first direction and across a frequency range extending from a first start frequency to a first end frequency. The tuning is retraced to the first start frequency, and scanning is resumed in the opposite direction across a second frequency range extending from the first start frequency to a second end frequency. Next, tuning is retraced to the second start frequency and scanning is resumed in the first direction across a third frequency range extending from the first end frequency to a third end frequency. The scan operation is repeated until predetermined upper and lower frequency limits are reached. When one of the frequency limits are reached, scanning is performed for one or more frequency ranges in the opposite direction without retrace until the second frequency limit is reached.

REFERENCES:
patent: 3962644 (1976-06-01), Baker
patent: 5303400 (1994-04-01), Mogi
patent: 5307513 (1994-04-01), Harada

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