Channel selection apparatus tunable to destined frequency in...

Details Channel selection apparatus tunable to destined frequency in... Channel selection apparatus tunable to destined frequency in...

H - Electricity

03

J

365/5

H03J 7/06 (2006.01) H03J 7/28 (2006.01)

Patent

CA 1127782

ABSTRACT OF THE DISCLOSURE A channel selection apparatus comprises a sweep control voltage generator driven by a circuit for sweeping the local oscillation signal frequency in an electronic tuner. The local oscillation signal frequency sweeping circuit includes an arrangement for increasing the rate of sweeping the local oscillation signal frequency only when the latter is being changed not in the vicinity of a destined frequency. The apparatus may further comprise another arrangement for preventing an eventual excessive sweeping beyond the destined frequency.

313429

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