Method and apparatus for transferring data within viewable portion of video signal
US7440034B2 · kind B2 · utility
0Cited by
15References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2003 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Feb 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/25
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal has a visual image (12) and carries data for optical detection (54) via the image. The data for optical detection is encoded (52) as data bits in a plurality of lines within a defined region (14) within the image. A corresponding decoder (16, 58) uses maximal energy methods to detect the defined region prior to decoding the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.