Television – Receiver circuitry – Tuning
Reexamination Certificate
2007-03-06
2007-03-06
Ometz, David (Department: 2622)
Television
Receiver circuitry
Tuning
C348S725000, C455S265000
Reexamination Certificate
active
10882324
ABSTRACT:
A television tuner includes a surface acoustic wave filter that receives input of an intermediate-frequency signal; an integrated circuit for detecting the intermediate-frequency signal, the integrated circuit including a video detector and a voltage-controlled oscillator that supplies a local oscillation signal for synchronous detection to the video detector; and a tank circuit that is provided externally to the integrated circuit and that is connected to the voltage-controlled oscillator. The integrated circuit has balanced input terminals associated with a first edge, and two connecting terminals associated with a second edge opposite to the first edge. The balanced input terminals are connected to output terminals of the surface acoustic wave filter, and the connecting terminals are connected to the tank circuit. Both ends of the tank circuit are connected to the connecting terminals via two connecting lines, the connecting lines crossing each other only once between the connecting terminals and the tank circuit.
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Alps Electric Co. ,Ltd.
Desir Jean W.
Ometz David
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