摘要 |
<p>A ring oscillator circuit contains a signal processor having data supply means (4, 5) for providing data signals, and control means (2) responsive to a control voltage (Vin) for providing a control current (I), the current control means being arranged to co-operate with the data supply means so as selectively to vary the rate of change of the control current with the control voltage according to the content of the data signals, and current control type oscillation means (1) for receiving the control current and supplying a corresponding output frequency. <IMAGE></p> |