JPS5479009A - Abnormality detecting system of tape running - Google Patents
Abnormality detecting system of tape runningInfo
- Publication number
- JPS5479009A JPS5479009A JP14611677A JP14611677A JPS5479009A JP S5479009 A JPS5479009 A JP S5479009A JP 14611677 A JP14611677 A JP 14611677A JP 14611677 A JP14611677 A JP 14611677A JP S5479009 A JPS5479009 A JP S5479009A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- running
- reel
- circuit
- sends
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prevent damaging of magnetic tape by sending out a tape running abnormality signal when the revolving direction of reels is opposite from the tape running direction and tape buffer quantity does not decrease.
CONSTITUTION: When the portion of deflection or double winding comes to the magnetic tape 4 wound to a reel 1, this is suddenly let off and therefore a tension arm 5 starts rotating rapidly in the counterclockwise direction and stops at a stopper. Hence, a tension arm rotating direction detector 7 sends an inversion and stop signal to a judgement circuit 12. A reel motor 2 produces torque in the clockwise direction according to the rotation of the arm 5, due to which the reel 1 decelerates the counterclockwise running speed until finally it runs backward in the clockwise direction and therefore the reel rotating direction detector 3 sends a backward running detection signal to the circuit 12. The circuit 12 sends out a tape running abnormality signal based on this signal to a VTR control circuit 13, causing the tape to stop running. Thereby, damaging of the magnetic tape may be prevented before it occurs.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52146116A JPS6037987B2 (en) | 1977-12-07 | 1977-12-07 | Tape running abnormality detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52146116A JPS6037987B2 (en) | 1977-12-07 | 1977-12-07 | Tape running abnormality detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5479009A true JPS5479009A (en) | 1979-06-23 |
JPS6037987B2 JPS6037987B2 (en) | 1985-08-29 |
Family
ID=15400512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52146116A Expired JPS6037987B2 (en) | 1977-12-07 | 1977-12-07 | Tape running abnormality detection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6037987B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0286295U (en) * | 1988-12-20 | 1990-07-09 |
-
1977
- 1977-12-07 JP JP52146116A patent/JPS6037987B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6037987B2 (en) | 1985-08-29 |
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