Variable frequency oscillating circuit
US7915964B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2008 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/0013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable frequency oscillating circuit has an oscillating circuit that undergoes an oscillation operation. The oscillating circuit has at least one inverter and at least one capacitor forming a circuit in a ring oscillator configuration. A current circuit outputs a current based on a frequency control signal controlling a frequency of a clock signal output from the oscillating circuit. A pulse generating circuit generates a pulse when the frequency control signal is switched from low to high and from high to low. The oscillating circuit stops an oscillation operation by stopping a charge/discharge operation of the at least one capacitor when the pulse is generated by the pulse generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.