Frequency bounded oscillator for video reconstruction
US6829014B1 · kind B1 · utility
0Cited by
10References
7Claims
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Assignee
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Key dates
| Filing date | May 4, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | May 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A frequency range bounder for limiting the frequency of a voltage controlled oscillator uses a multiplexer that responds to comparator inputs indicating whether an input control signal will allow the oscillator frequency to go beyond a predetermined range. If the control signal keeps the frequency within the range, the control signal is sent directly to an oscillator driver. If the control signal is above or below the range, the multiplexer outputs an alternative value as the control signal. As a result, the oscillator frequency is prevented from extending beyond an allowable tolerance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.