Time base generator internal voltage-controlled oscillator calibration system and method
US6064947A · kind A · utility
16Cited by
13References
15Claims
0Family size
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Key dates
| Filing date | Aug 27, 1997 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Aug 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A successive approximation system and method for calibrating an oscillator in a time base generator application. An oscillator output frequency is compared to a reference frequency. Control logic calibrates an input control current to the oscillator, one bit at a time, through a digital-to-analog converter. The calibrated input control current corrects central frequency errors in the oscillator. Successive approximation continues until all bits are tested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.