Radio having an invertible display with reversible controls

Details Radio having an invertible display with reversible controls Radio having an invertible display with reversible controls

1987-08-28

1989-03-28

Tarcza, Thomas H.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455158, H04B 140

Patent

active

048171948

ABSTRACT:
A radio includes a frequency synthesizer that is under the control of a microcomputer. Stored in the microcomputer's memory is a menu of predetermined frequencies from which a particular frequency is selected by scrolling through the menu. Activating a first switch causes the microcomputer to scroll in one direction while activating a second switch causes the microcomputer to scroll in the opposite direction. A display, positioned on the top of the radio, displays a character set indicative of the particular frequency selected. When both switches are activated simultaneously, the orientation of the character set appearing in the display is inverted, and the scrolling direction of each switch reverses.

REFERENCES:
patent: 4110690 (1978-08-01), Kakigi
patent: 4287599 (1981-11-01), Goncharoff et al.
patent: 4307266 (1981-12-01), Messina
patent: 4320255 (1982-03-01), Null et al.

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