Passive data recording onto magnetic layers of photographic film
US5572267A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Aug 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A magnetic recorder includes multiple permanent magnetic elements having magnetic orientations that impart a sequence of magnetic transitions to magnetic media of a photographic filmstrip contained within a camera. The permanent magnetic elements are external to the camera. The sequence of magnetic transitions comprise information that can be subsequently retrieved and provided to the photographic processor and/or photographer. The information can include identification of locale or other information of interest to the photographer. The magnetic recorder requires no power supply and is easily operated by a photographer virtually without regard to weather conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.