Television tuner device generating intermediate-frequency...

Details Television tuner device generating intermediate-frequency... Television tuner device generating intermediate-frequency...

2007-09-11

2007-09-11

Yenke, Brian P. (Department: 2622)

Television

Receiver circuitry

Tuning

C348S087000, C348S607000, C348S725000, C348S736000, C348S737000, C334S085000, C455S300000, C455S301000, C455S310000, C455S317000

Reexamination Certificate

active

10932748

ABSTRACT:
A television tuner device includes a metal frame, including a shielding plate which separates the space defined by the metal frame into a first chamber at a first side plate and a second chamber at a second side plate opposite to the first side plate; a distribution unit may be disposed in the first chamber; a tuning unit disposed in the second chamber includes a mixer circuit converting a television signal into an intermediate-frequency signal, an oscillator provides the mixer circuit with an oscillated signal, and a phase-locked-loop (PLL) circuit controls the oscillation frequency of the oscillator; and a crystal oscillator disposed in the first chamber provides the PLL circuit with a reference signal.

REFERENCES:
patent: 5050238 (1991-09-01), Tomizuka et al.
patent: 5111274 (1992-05-01), Tomizuka et al.
patent: 5369552 (1994-11-01), Barnes et al.
patent: 5710999 (1998-01-01), Iwase et al.
patent: 6131023 (2000-10-01), Matsuura
patent: 6160571 (2000-12-01), Wang
patent: 7030939 (2006-04-01), Yamamoto
patent: 7042529 (2006-05-01), Wakamori et al.
patent: 2006/0050186 (2006-03-01), Hosoi
patent: 10-32514 (1998-02-01), None
patent: U3096172 (2003-06-01), None

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