Crystal oscillator and startup method for a crystal oscillator
US11251750B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2021 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0094
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A crystal oscillator and a startup method for initiating operation of a crystal oscillator, the crystal oscillator includes an oscillator structure including a crystal resonator and an electronic oscillator circuit connected to the crystal resonator, the oscillator structure having a first terminal and a second terminal, a startup controller operable to initiate an oscillation in the oscillator structure by exciting the oscillator structure with a sequence of excitation signals derivable from a clock signal and when triggered by a timing signal, the sequence of excitation signals includes at least a first excitation signal and a second excitation signal, a comparator including a first and a second input terminal and an output terminal, the first input terminal being connected to the first terminal and wherein the second input terminal is connected to the second terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.