Phase synchronization
US6242965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jul 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus for producing an oscillating signal in a predetermined phase relationship with an input signal which generates its output signal by mixing in variable proportions two or more reference oscillating signals. Preferably the reference signals should be in quadrature relationship and have approximately the same frequency as the desired output, but this is not essential. The output signal may be desired to be in phase with the input signal or to have a predetermined phase offset. In a further aspect, apparatus is described which generates quadrature related clock signals, which may be used as the reference signals in the phase-lock arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.