Method and apparatus for demultiplexing electrical signals
US4356562A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Mar 4, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0617
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The specification describes a method and an apparatus for demultiplexing a multiplexed signal having a reference frequency into its original component signals including the steps of sampling the multiplexed signal at a controllable frequency which is greater than the reference frequency of the multiplexed signal to provide a series of samples, rearranging the samples of the series into different series representative of the original component signals, determining the phase differential between the reference frequency and the controllable frequency using the different series and then adjusting the controllable frequency toward synchronism with the reference frequency by an amount proportional to the phase differential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.