Radio receiver for identifying a region transmitting a broadcast

Details Radio receiver for identifying a region transmitting a broadcast Radio receiver for identifying a region transmitting a broadcast

1991-09-11

1994-01-18

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551521, 4551584, 4551613, H04B 116

Patent

active

052806421

ABSTRACT:
The present invention provides a radio receiver which is capable of automatically identifying the region from which a specific frequency is being received, for example, the name of a city or the like only by receiving the frequency therefrom. In the radio receiver according to the present invention as above, first all the reception frequencies within a broadcast reception band are swept to detect the relationship between each of the reception frequencies and level of the electric field intensity of each reception frequency, whereby all the reception frequencies are divided into two groups; the first and second groups, depending on the level of the electric field of each reception frequency. Whereafter, within the region codes stored in the first memory means, those having more number of reception frequencies defined in the first group than a predetermined number are selected, then the nearby regions of the thus selected region codes are searched from the second memory means, so that in the case that the nearby region also includes more number of the reception frequencies defined in the second group than a predetermined number, the region of the thus selected region code is determined as a frequency reception region of this moment.

REFERENCES:
patent: 4969209 (1990-11-01), Schwob

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