AM/FM receiver with insertable memory card and display of freque

Details AM/FM receiver with insertable memory card and display of freque AM/FM receiver with insertable memory card and display of freque

1989-09-12

1991-03-19

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455186, 455347, H04B 108

Patent

active

050017756

ABSTRACT:
A radio receiver having a synthesizer-type receiving circuit, in which the received broadcast signal is determined by varying a frequency-dividing ratio in a phase-locked loop, is provided with a display which shows in respective areas of a tabular format the names of various geographic regions and of broadcasting stations that can be received in the respective geographic regions, and with a memory having addresses for storing data corresponding to frequencies needed for the reception of respective broadcasting stations receivable in the various geographic regions. A signal forming circuit, for example, responsive to coded information on the display, provides signals indicating respective geographic regions whose names are selectively displayed, and channel-selection switches, which are desirably positionally related to respective areas of the tabular format of the display, are selectively actuable for cooperation with the signals from the signal forming circuit in causing a microcomputer to read data stored at respective addresses of the memory and to determine the frequency-dividing ratio from such data.

REFERENCES:
patent: 3187713 (1965-06-01), Fenwick
patent: 4306294 (1981-12-01), Hoshimoto et al.
patent: 4888815 (1989-12-01), Ahlemeyer et al.
David M. Thomas, Radio Electronic, May 1973, pp. 42-45, 50 and 93.

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