Information carrier and devices for scanning the information carrier
US6724707B2 · kind B2 · utility
14Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a predetermined synchronization pattern (40), a so-called VFO field, in, for example, the headers 3 of an information carrier. The proposed predetermined synchronization pattern (40) consists of sequences of 3T marks and spaces (41), of 8T marks and spaces (42) and of 5T marks and spaces (43). This sequence of patterns is advantageous for setting the dynamic range of an Automatic Gain Controlled (AGC) amplifier located within a device reading the information carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.