System and method for encoding objects
US4758703A · kind A · utility
32Cited by
27References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | May 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/267
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system and method for encoding objects with a microscopically visible code are provided. A laser beam is passed through a mask to impose a pattern representative of the code on the beam. The power level of the beam is adjusted in accordance with the output of a reflectivity sensor which measures the object, so that the beam intensity is sufficient to produce a microscopically visible pattern, but insufficient to produce a visible pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.