Quasi-analog channel indicator for radio receivers

Details Quasi-analog channel indicator for radio receivers Quasi-analog channel indicator for radio receivers

1977-06-30

1980-10-07

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455183, 334 86, H04B 116, H03J 102

Patent

active

042272548

ABSTRACT:
A radio receiver receives a transmitted high-frequency signal which is mixed within the receiver with a local-oscillator-frequency signal to form an intermediate-frequency signal, which in turn is converted into an audio-frequency signal. A plurality of indicator elements are arranged in a row to form a quasi-analog channel indicator, each indicator element of which is associated with a respective one of the selectable channels. A multi-channel oscillator furnishes the requisite local-oscillator-frequency signals for tuning-in the available channels and furthermore controls the operation of the indicator elements of the quasi-analog channel indicator.

REFERENCES:
patent: 3882399 (1975-05-01), Karpowycz et al.
patent: 3898642 (1975-08-01), Dorey et al.
patent: 3961261 (1976-06-01), Pflasterer
patent: 3962641 (1976-06-01), Suwa
patent: 4009440 (1977-02-01), Okada et al.
patent: 4039956 (1977-08-01), Shimanek et al.
patent: 4040719 (1977-08-01), Schiebelhuth
patent: 4048570 (1977-09-01), Sumi
patent: 4122395 (1978-10-01), Schotz et al.

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