Data format for magnetically coated film
US5898476A · kind A · utility
1Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Jan 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2206/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a photographic film having a substantially transparent magnetic layer, and a sequence of longitudinally spaced image frames, the improvement comprising: PA1 at least one longitudinal magnetic track in said magnetic layer located on a side of each image frame, said track having a fixed length L; and PA1 a pair of data blocks recorded on said track, each said data block having a length which is less than L/2 and being recorded respectively at the beginning and end of said track with an unrecorded space between said data blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.