| 摘要 |
<p>A virtually transparent magnetic layer is included as an additional layer in a color negative film. Information exchange between various users of the film -such as the camera user, the dealer, photofinisher and film-to-video player- is carried via plural longitudinal magnetic tracks on the film, each track being dedicated to the writing and reading of a predetermined set of related parameters. The photofinisher-dedicated track locations fill the exposed image area of each frame. The camera tracks lie along the edges of the film between the film perforations, the perforations being widely spaced for this purpose. All data, such as cropping, zooming, rotating or character superposition instructions, is recorded as individual pieces of information identified by virtual data identifiers to enable the film-to-video player to quickly access and execute such instructions by altering the video signal produced from each frame of the developed film.</p> |
