Method for automatically regulating an oscillator
US7127628B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Jun 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for automatically regulating an oscillator is applicable to a low-speed USB interface connecting system and includes the steps of (a) providing a voltage-controlled oscillator in a USB interface for generating a controllable oscillating signal to a USB electronic device; (b) feeding back the controllable oscillating signal to a frequency comparing unit for comparing the controllable oscillating signal with a Keep Alive Strobe signal in the USB interface; (c) inputting an output signal of the frequency comparing unit to a frequency regulating unit for changing the frequency of the controllable oscillating signal according to a signal regulating voltage fed back from the frequency comparing unit; and (d) repeating (b) and (c) to synchronize the controllable oscillating signal with the Keep Alive Strobe signal in the USB interface; so that the USB interface connecting system and the USB electronic device may be quickly synchronized for data transmission at reduced cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.