Telecine systems for high definition use
US6118478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1999 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Mar 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/698
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of using telecine apparatus to scan cinematographic film made up of individual image frames. Each frame is scanned a number of times using detected light to generate corresponding image data. Each sub-scanned portion within a frame adjoins another sub-scanned portion to enable reproduction of the complete frame by piecing-together data from the sub-scanned portions to produce data corresponding to the complete frame. To help ensure that no positional anomalies are present between adjoining sub-scans, a correlation step is carried out to identify a correlated alignment in position between data corresponding to adjoining subscans. The data from the subscans used in the correlation step is then adjusted to optimize spatial alignment between the data corresponding to the sub-scans. The correlation and adjustment of the subscan data sets may be repeated so that all of the sub-scans in a frame are optimally aligned in space, enabling the sub-scans to be combined into the complete image frame. In one embodiment, correlation is carried out during a first pass of cinematographic film through a telecine apparatus, while offset adjustments are carried out during a second pass (a resc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.