Signal switching
US6765865B1 · kind B1 · utility
3Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0045
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A television or other signal is received via main and duplicate feeds into respective buffers. Should the main feed suffer interruption or disturbance the output is switched at a switch over to the duplicate feed, but in a staged process. Upon initial detection of disturbances read-out from the main buffer is performed using locally generated timing signals in lieu of timing signals obtained from the incoming signal. If however the disturbance s persist the two buffers are synchronized and switchover performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.