Digital automatic fine tuning method and apparatus

Details Digital automatic fine tuning method and apparatus Digital automatic fine tuning method and apparatus

2006-07-11

2006-07-11

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

C455S192300, C348S731000

Reexamination Certificate

active

07076221

ABSTRACT:
Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.

REFERENCES:
patent: 4121162 (1978-10-01), Alberkrack et al.
patent: 4249259 (1981-02-01), Oda et al.
patent: 4262364 (1981-04-01), Fujita
patent: 4429415 (1984-01-01), Chin et al.
patent: 5163164 (1992-11-01), Tults
patent: 6400420 (2002-06-01), Kim

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