Automatic retrieval process for machine-printed or handwritten text on a background, in a multilevel digital image
US6154565A · kind A · utility
5Cited by
4References
10Claims
0Family size
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for frequency acquisition and channel tracking in a direct sequence code division multiple access system are described. Frequency estimates are prepared and refined, which estimates are also used in the channel tracking process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.