Frequency calibration circuit for automatically calibrating frequency and method thereof
US8634506B2 · kind B2 · utility
1Cited by
1References
14Claims
0Family size
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Key dates
| Filing date | Oct 20, 2010 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Jun 9, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1077
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Generate a series of digital data according to a pair of differential signals received from a low speed universal serial bus. Calibrate coarsely a frequency of an oscillator according to a width of an end-of-packet of the series of digital data. And calibrate finely the frequency of the oscillator according to a width of a SYNC pattern of the series of digital data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.