Frequency synthesizer tuner

Details Frequency synthesizer tuner Frequency synthesizer tuner

1976-04-29

1978-09-26

Griffin, Robert L.

325468, H04B 106

Patent

active

041174070

ABSTRACT:
The frequency synthesizer tuner is constituted by a dynamic shift register including first and second shift registers connected in a loop, wherein an information is written into and read out of the dynamic shift register and circulated therethrough by clock pulses, an output circuit including a display unit and a frequency synthesizer to which the information read out of the first shift register is supplied through a latch circuit, and a memory circuit connected in parallel with the latch circuit, a transfer circuit connected between the first and second shift registers, a refresh circuit connected between the output circuit and the second shift register, and a keyboard and a keyboard input circuit for applying an input information to the first shift register.

REFERENCES:
patent: 3714585 (1973-01-01), Koch
patent: 3748645 (1973-07-01), Kawashima
patent: 3803494 (1974-04-01), Howell et al.
patent: 3883807 (1975-05-01), Alberkrack
patent: 3898579 (1975-08-01), Aldridge
patent: 3961261 (1976-06-01), Pflasterer
patent: 3962644 (1976-06-01), Baker
patent: 4023107 (1977-05-01), Tanaka

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