Tape transport system control device
AssigneeCanon Kabushiki Kaisha
InventorNaoki Kawamata
Life of this patent
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Abstract
A tape transport system control device for controlling a tape transport system in which a tape payed out from a supply-side reel driven by a supply-side reel motor travels through a predetermined path to be taken up on a takeup-side reel driven by a takeup-side reel motor, includes a tape speed control servoloop for the takeup-side reel motor, a tape tension control servoloop for the supply-side reel motor, a detecting part arranged to detect a difference between a tape tension obtained on the side of the supply-side reel and a tape tension obtained on the side of the takeup-side reel, and a loop arranged to feed the detected difference of tension forward to the supply-side reel motor.
Claims19
A device for controlling the travel of a tape wound around a pair of reels, comprising:
- a) a first motor arranged to drive a first reel mount on which one of said pair of reels is mounted;
- b) a second motor arranged to drive a second reel mount on which the other of said pair of reels is mounted;
- c) first detecting means for detecting the tension of a portion of the tape being payed out from said reel mounted on said first reel mount;
- d) second detecting means for detecting the tension of a portion of the tape being taken up on said reel mounted on said second reel mount;
- e) third detecting means for detecting a traveling speed of the tape;
- f) first control means for controlling said first motor on the basis of a difference between a result of detection provided by said first detecting means and a predetermined reference value;
- g) second control means for controlling said second motor on the basis of a result of detection provided by said third detecting means;
- and
- h) third control means for controlling said first motor in cooperation with said first control means on the basis of a difference between the results of detection provided by said first detecting means and said second detecting means.
An apparatus for recording or reproducing information on or from a tape wound around a pair of reels, comprising:
- a) a first motor arranged to drive a first reel mount on which one of said pair of reels is mounted;
- b) a second motor arranged to drive a second reel mount on which the other of said pair of reels is mounted;
- c) a rotary drum disposed between said first and second reel mounts, said rotary drum having a plurality of heads arranged thereon to record or reproduce information on or from the tape;
- d) first detecting means for detecting the tension of a portion of the tape being payed out from said reel mounted on said first reel mount;
- e) second detecting means for detecting the tension of a portion of the tape being taken up on said reel mounted on said second reel mount;
- f) third detecting means for detecting a traveling speed of the tape;
- g) first control means for controlling said first motor on the basis of a difference between a result of detection provided by said first detecting means and a predetermined reference value;
- h) second control means for controlling said second motor on the basis of a result of detection provided by said third detecting means;
- and
- i) third control means for controlling said first motor in cooperation with said first control means on the basis of a difference between the results of detection provided by said first detecting means and said second detecting means.
Dependencies are inferred from the claim text.