Method and apparatus for controlling image scanning and data transfer in a photographic film scanner
US6101006A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Aug 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/482
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a photographic film scanner having a film transport drive stepper motor, an illuminant head having a plurality of spectrally separate light source, a light sensor and data collection and transfer circuits, each operationally responsive to a programmed controller. The controller is provided with a common timer and is programmed with a plurality of lookup tables (LUT), each LUT is populated with a sequence of elements defining timing of an operating activity in a respective one of the illuminant head light sources, the stepper motor and the light sensor data transfer circuits. The program operates to use the common timer to step synchronously through the elements of the LUTs to output value states from the elements of each of the LUTs; to control the actuation timing of the respective light sources, stepper motor and data collection and transfer circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.