Apparatus for reading magnetic information
US6173125A · kind A · utility
2Cited by
10References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1996 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jan 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera has a function of determining whether a frame is exposed or unexposed by reproducing signals recorded on a magnetic-recording region of a film. When a film cartridge is loaded into the camera, the film is fed out therefrom. If it is determined that a noise having a level higher than a reference level is included in a reproduced signal read by a magnetic head, for reading the signals recorded on the magnetic-recording region, before the magnetic head reaches the magnetic-recording region, film feeding is stopped and a warning is issued.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.