Radio control circuit with microprocessor

Details Radio control circuit with microprocessor Radio control circuit with microprocessor

1978-06-16

1981-07-07

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340756, 340765, 340802, 340799, 455160, G06F 314, H04B 126

Patent

active

042777852

ABSTRACT:
An FM tuner control circuit contains a digital frequency synthesizing control circuit, digital computer means including a microprocessor, a memory circuit, and a manual control circuit for digitally tuning the tuner to any desired FM station. The memory circuit includes a read-only memory containing programs for the microprocessor and a random-access memory in which a group of predetermined station frequencies can be stored. The control circuit also includes a call letter display circuit, a frequency scale pointer display circuit, a frequency display circuit, a manual tuning circuit, and remote control switches for the manual control circuit.

REFERENCES:
patent: 3754121 (1973-08-01), Delay et al.
patent: 3918041 (1975-11-01), Mao
patent: 4122395 (1978-10-01), Schotz et al.

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