Generation of a synthetic clock signal in synchronism with a high frequency clock signal and corresponding to a low frequency clock signal
US5664165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0054
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for generating a synthetic clock signal in synchronism with both a high frequency clock signal and low frequency clock signal, where the rising and falling edges of the low frequency clock signal are subject to material skew. The frequency ratio between the high and low frequency clock signals is derived by sampling the low frequency clock signal at the frequency of the high frequency cloak signal. The synthesized low frequency clock signal is generated directly from the high frequency clock signal using the determined relative frequency ratio. The synthetic clock signal is also in synchronism with the low frequency clock signal. Since the synthetic clock signal is derived directly from the high frequency clock signal, it is not subject to the skew problems of the low frequency clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.