| CPC H04N 3/38 (2013.01) [H04N 1/00649 (2013.01); H04N 1/0066 (2013.01); H04N 1/00816 (2013.01)] | 20 Claims |
|
1. 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.
|