Receiver having a light emitting display as frequency and tuning

Details Receiver having a light emitting display as frequency and tuning Receiver having a light emitting display as frequency and tuning

1982-08-26

1985-01-01

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

340704, H04B 116

Patent

active

044919743

ABSTRACT:
A receiver having a light emitting display device indicating the frequency to which the receiver is tuned and the presence or absence of a received signal by the use of visually distinct display modes. In one embodiment, a first color indicates no received signal and a second color display indicates the presence of a received signal. In another embodiment, a first color indicates no received signal, a second color indicates approximate tuning and a third color indicates exact tuning of a received signal.

REFERENCES:
patent: 3882399 (1975-05-01), Karpowycz
patent: 3896386 (1975-07-01), Ohsawa
patent: 3987401 (1976-10-01), Irving
patent: 4039956 (1977-08-01), Shimanek et al.
patent: 4165500 (1979-08-01), Misawa
patent: 4348666 (1982-09-01), Ogita
"Chip changes the Colors of Light-Emitting Diodes", by Burke, Electronics, Apr. 7, 1981, vol. 54, No. 7, (340/704).
"Radiomentor Electronic", Annee 44, No. 9, 9/1978, Munich (DE), H. Forster, "FM-Radioskala mit Leds", pp. 342-343.

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