| 摘要 |
PCT No. PCT/GB85/00244 Sec. 371 Date Feb. 6, 1986 Sec. 102(e) Date Feb. 6, 1986 PCT Filed Jun. 6, 1985 PCT Pub. No. WO85/05744 PCT Pub. Date Dec. 19, 1985.A frequency controlled oscillator arranged to be fabricated in integrated circuit form including a primary frequency controlled oscillator and a secondary frequency controlled oscillator with a counter arranged to periodically count pulses of the oscillation frequency of the secondary frequency controlled oscillator and to produce a first output signal if the count is less than a predetermined value and to produce a second output signal if the count is greater than a predetermined value, and control means providing a bias control signal in dependence on the output signals of the counter for tuning the oscillation frequency of both the secondary frequency controlled oscillator and the primary frequency controlled oscillator.
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