Tuner

Details Tuner Tuner

2005-01-11

2005-01-11

Tieu, Binh (Department: 2643)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S131000, C455S189100, C455S197100, C455S315000, C455S340000

Reexamination Certificate

active

06842610

ABSTRACT:
A tuner includes an input terminal, first to fourth band-pass filters, an automatic gain controller, first to third amplifiers, first and second mixers, first and second voltage controlled oscillators, first and second PLL ICs, a reference oscillator circuit, and an output terminal. The second PLL IC and the reference oscillator circuit are connected through a capacitor and an amplifier. An amplifier for reference oscillation, included in the first PLL IC is connected to the reference oscillator circuit through an inductor that defines an inductance device.

REFERENCES:
patent: 4726072 (1988-02-01), Yamashita et al.
patent: 5428829 (1995-06-01), Osburn et al.
patent: 6549766 (2003-04-01), Vorenkamp et al.
patent: 6591091 (2003-07-01), Vorenkamp et al.
patent: 6684065 (2004-01-01), Bult et al.
patent: 6696898 (2004-02-01), Ward et al.
patent: 6744320 (2004-06-01), Nguyen et al.
patent: 6759904 (2004-07-01), Behzad

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