Device and method for synchronizing a flasher frequency with a central flashing frequency
US7230526B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 2005 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Nov 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device performs a synchronization between flasher frequencies of flasher devices and a central flashing frequency of a central control device at times when a data transmission device is in the active state. For a synchronization, a correction signal is determined in the central control device from a deviation of a phase of the flasher frequency relative to a phase of the central flashing frequency and transmitted to a flasher control device which modifies the flasher frequency phase in response to the correction signal. Following the modification of the flasher frequency phase the data transmission device is switched back once more into an idle state. This offers the advantage that a synchronization of flasher devices with a central control device can be performed, whereby a data transmission device does not need to be permanently active and can therefore be used in a power-saving way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.