Television – Receiver circuitry – Tuning
Reexamination Certificate
2006-02-21
2006-02-21
Miller, John (Department: 2614)
Television
Receiver circuitry
Tuning
C348S732000, C348S725000, C455S191100, C455S209000
Reexamination Certificate
active
07002639
ABSTRACT:
A dual digital television tuner includes first and second direct conversion circuits, each having a pair of mixers and a local oscillator, in which a digital television signal is input to the pair of mixers, which directly output baseband signals. The first direct conversion circuit may have a frequency divider or a multiplier. Each of the pair of mixers, the local oscillator, the frequency divider, and the multiplier is constituted by a balanced circuit. An oscillation signal of the local oscillator in the first direct conversion circuit is input to the pair of mixers of the first direct conversion circuit through the frequency divider or the multiplier.
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Alps Electric Co. ,Ltd.
Desir Jean W.
Miller John
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