Back to results
US 12,262,137 B2Granted
Film transport apparatus controller and related methods
AssigneeDigital Check Corporation
InventorsKurt Breish, Victor Mimken, Anthony Senn
Life of this patent
Estimating the term…
Abstract
Methods and systems are presented for controlling a film transport apparatus of a film reel scanner. In one embodiment, a system is provided including a line scanning camera, a supply reel motor, a take-up reel motor, and a plurality of capstan motors. A control system may then be configured to receive and dynamically adjust position information from these motors. The control system may then provide the dynamically adjusted position information to a plurality of controllers, which may then generate control signals for the supply reel motor, the take-up reel motor, and the at least a subset of the capstan motors.
Claims20
A system, comprising:
- a processor;
- a radius updater configured to determine, at a plurality of times, a plurality of radii of a first reel having a portion of a film wound thereon, wherein a first radius of the plurality of radii is determined at a first time of the plurality of times and differs from a second radius of the plurality of radii determined at a second time of the plurality of times as the film is advanced between the first reel and a second reel while scanning the film at a constant speed between the first reel and the second reel;
- and
- a memory including instructions that when executed by the processor configure the system to:
- receive, from a motor used to advance the film between the first reel and the second reel, a plurality of rotational position measurements at the plurality of times while scanning the film;
- generate a control signal for a rate of rotation for the motor;
- and
- in response to detecting an inconsistency between a measured length of the film having been scanned and an expected length of the film that was expected to have been scanned while scanning the film:
- calculate an offset factor for the motor;
- and
- adjust the rate of rotation of the motor via the control signal including the offset factor while maintaining the constant speed.
8 more elements
A method, comprising:
- scanning a film;
- receiving, from a motor used to advance the film between a first reel and a second reel, a plurality of rotational position measurements at a plurality of times while scanning the film;
- determining, via a radius updater, a plurality of radii of at least one of the first reel and the second reel for the plurality of times, wherein a first radius of the plurality of radii is determined at a first time of the plurality of times and differs from a second radius of the plurality of radii determined at a second time of the plurality of times as the film is advanced between the first reel and a second reel while scanning the film at a constant speed between the first reel and the second reel;
- generating a control signal for a rate of rotation for the motor based on an associated rotational position of the motor;
- and
- in response to detecting an inconsistency between a measured length of the film having been scanned and an expected length of the film that was expected to have been scanned while scanning the film:
- calculating an offset factor for the motor;
- and
- adjusting the rate of rotation of the motor via the control signal including the offset factor while maintaining the constant speed.
6 more elements
A system, comprising:
- a first reel, holding a film;
- a second reel, configured to receive the film from the first reel;
- a line scan camera, disposed between the first reel and the second reel, configured to scan the film;
- a motor, configured to provide a plurality of rotational position measurements at a plurality of times while advancing the film from the first reel to the second reel across the line scan camera;
- and
- radius updater configured to:
- determine at a plurality of times, a plurality of radii of at least one of the first reel and the second reel, wherein a first radius of the plurality of radii is determined at a first time of the plurality of times and differs from a second radius of the plurality of radii determined at a second time of the plurality of times as the film is advanced between the first reel and a second reel while scanning the film at a constant speed between the first reel and the second reel;
- and
- adjust, in response to detecting an inconsistency between a measured length of the film having been scanned and an expected length of the film that was expected to have been scanned while scanning the film, a rate of rotation of the motor via an offset factor applied to a control signal for the motor while maintaining the constant speed of the film.
6 more elements
Dependencies are inferred from the claim text.