Windowed tuning system with synchronous detector
A television receiver includes automatic fine tuning, synchronous detection, and a "window" type tuning system. The synchronous detector has a detector oscillator which is tunable to the nominal frequency of an intermediate frequency signal derived from a received television signal. For fi...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A television receiver includes automatic fine tuning, synchronous detection, and a "window" type tuning system. The synchronous detector has a detector oscillator which is tunable to the nominal frequency of an intermediate frequency signal derived from a received television signal. For fine tuning control, a frequency comparator receives the outputs of a fixed frequency reference oscillator and the synchronous detector oscillator and develops a control signal for locking the tuner to the frequency of a received television signal. |
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