US 5,327,304 A · Tape drive controlling device

Abstract

A tape drive controlling device includes a first controlling circuit for driving a take-up reel for a tape on the basis of the result of a comparison between a take-up-side tension measured between the take-up reel and a head and a predetermined tension target value, a second controlling circuit for driving a supply reel for the tape on the basis of the result of a comparison between a supply-side tension measured between the supply reel and the head and a predetermined tension target value, a speed detecting circuit for detecting the travel speed of the tape, and a correcting circuit for correcting at least one of the take-up-side and supply-side tension target values on the basis of the result of a comparison between a detection result provided by the speed detecting circuit and a travel speed target value.

Claims30

Dependent claims

A tape drive controlling device which causes a tape to travel from one of first and second reels to the other while maintaining the tape in contact with a head, comprising:

(a) speed detecting means for detecting a travel speed of the tape;
(b) first tension detecting means for detecting a tension of the tape between the head and the first reel;
(c) second tension detecting means for detecting a tension of the tape between the head and the second reel;
(d) reel driving means for driving the first and second reels to cause the tape to travel;
(e) first arithmetic means for making a comparison between a tension value obtained through said first tension detecting means and a first tension reference value and inputting a result of the comparison to said reel driving means;
(f) second arithmetic means for making a comparison between a tension value obtained through said second tension detecting means and a second tension reference value and inputting a result of the comparison to said reel driving means;
(g) third arithmetic means for making a comparison between a speed value obtained through said speed detecting means and a speed reference value;
and
(h) correcting means for correcting the first tension reference value and/or the second tension reference value on the basis of a result of the comparison obtained through said third arithmetic means.

6 more elements

A tape drive controlling device which causes a tape to travel from one of first and second reels to the other while maintaining the tape in contact with a head, comprising:

(a) speed detecting means for detecting a travel speed of the tape;
(b) first tension detecting means for detecting a tension of the tape between the head and the first reel;
(c) second tension detecting means for detecting a tension of the tape between the head and the second reel;
(d) reel driving means for driving the first and second reels to cause the tape to travel;
(e) first arithmetic means for making a comparison between a tension value obtained through said first tension detecting means and a first tension reference value and inputting a result of the comparison to said reel driving means;
(f) second arithmetic means for making a comparison between a tension value obtained through said second tension detecting means and a second tension reference value and inputting a result of the comparison to said reel driving means;
(g) third arithmetic means for making a comparison between a speed value obtained through said speed detecting means and a speed reference value;
(h) coefficient multiplying means for multiplying a result of the comparison obtained through said third arithmetic means by a predetermined coefficient;
and
(i) correcting means for correcting the first tension reference value and the second tension reference value on the basis of output results from said coefficient multiplying means.

7 more elements

A recording or reproducing apparatus for performing recording or reproduction while causing a tape to travel with the tape wrapped around a rotary head drum equipped with a head, comprising:

(a) first and second reels around which the tape is wound;
(b) speed detecting means for detecting a travel speed of the tape;
(c) first tension detecting means for detecting a tension of the tape between the rotary head drum and said first reel;
(d) second tension detecting means for detecting a tension of the tape between the rotary head drum and said second reel;
(e) reel driving means for driving said first and second reels to cause the tape to travel;
(f) first arithmetic means for making a comparison between a tension value obtained through said first tension detecting means and a first tension reference value and inputting a result of the comparison to said reel driving means;
(g) second arithmetic means for making a comparison between a tension value obtained through said second tension detecting means and a second tension reference value and inputting a result of the comparison to said reel driving means;
(h) third arithmetic means for making a comparison between a speed value obtained through said speed detecting means and a speed reference value;
and
(i) correcting means for correcting the first tension reference value and/or the second tension reference value on the basis of a result of the comparison obtained through said third arithmetic means.

7 more elements

Dependencies are inferred from the claim text.

Tape drive controlling device

Life of this patent

Tape drive controlling device

Life of this patent

Abstract

Claims30