Wide frequency spectrum television tuner with single local oscillator
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United States of America Patent
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Nov 9, 1999
Grant Date -
N/A
app pub date -
Jul 10, 1997
filing date -
Jan 23, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tuner includes a conversion (or heterodyning) stage, including a local oscillator and a mixer, for converting an RF signal corresponding to a selected channel to an IF signal. The local oscillator has only one tunable oscillating portion for generating a signal, and a frequency converter, such as a controllable frequency divider, for converting the frequency of the signal generated by said oscillating portion, so that the receiver is able to tune through the UHF and VHF bands. The operation of the requency converter is responsive to a digital controller, such as a microprocessor.
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