Digital audio broadcast receiver acquiring frame synchronization quickly in the presence of noise
US6516039B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital audio broadcast receiver detects frame synchronization signals, measures the pulse widths of and intervals between the detected frame synchronization signals, and stores this information in a memory, together with a history of counts of frame synchronization signals, and stores this information in a memory, together with a history of counts of frame synchronization signals of certain widths detected at certain intervals. This information is retained in the memory until frame synchronization is acquired, as determined from the stored count values, enabling frame synchronization to be acquired quickly despite the false detection of frame synchronization signals due to noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.