Method for embedding non-intrusive encoded data in printed matter and system for reading same
US6325420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1998 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Aug 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/004
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Printed matter has printed informational content. This refers to the content of a given document which is relevant to the intended reviewer, e.g., the printed text of the letter or pictures. According to the invention, the printed matter also, however, comprises a print control symbol. This symbol is located at a predetermined position on the printed matter, which is separated from the printed informational content. The print control symbol is hidden such that it is not apparent to a reviewer of the printed matter and encodes information concerning the printed matter such as sequencing information, which is relevant to the printing system during printing and mailing, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.