JPS5668951A - Magnetic tape driving device - Google Patents
Magnetic tape driving deviceInfo
- Publication number
- JPS5668951A JPS5668951A JP14463379A JP14463379A JPS5668951A JP S5668951 A JPS5668951 A JP S5668951A JP 14463379 A JP14463379 A JP 14463379A JP 14463379 A JP14463379 A JP 14463379A JP S5668951 A JPS5668951 A JP S5668951A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- driving
- reverse
- time
- back tension
- 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 reduce the reversing time in case the driving is given by the motor connected directly to the two reels, by reducing sufficiently the driving current of the relay driving motor for tape roll-out during the reverse.
CONSTITUTION: When the terminal signal (e) is inputted at the time t1, the reverse of tape driving is started to turn iL and iR to zero and ID each. The level of the ID is controlled by the control driving device 8 according to the tape roll-up degree. Since the torque corresponding to IB applied to the motor 3 is reduced, the travelling speed of the tape increases quickly. The device 8 receives the switch command from the back tension switch device 9 at the time point t2 when the tape speed approximates to the prescribed level, thus increasing the iL from zero to IB with an addition of the back tension. No large back tension is applied during the time t1W t2, and thus the rise of the tape speed increases during the reverse.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14463379A JPS5668951A (en) | 1979-11-07 | 1979-11-07 | Magnetic tape driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14463379A JPS5668951A (en) | 1979-11-07 | 1979-11-07 | Magnetic tape driving device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5668951A true JPS5668951A (en) | 1981-06-09 |
JPH0213380B2 JPH0213380B2 (en) | 1990-04-04 |
Family
ID=15366581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14463379A Granted JPS5668951A (en) | 1979-11-07 | 1979-11-07 | Magnetic tape driving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5668951A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0477081A (en) * | 1990-07-16 | 1992-03-11 | Matsushita Electric Ind Co Ltd | Video adjustment circuit for television receiver |
-
1979
- 1979-11-07 JP JP14463379A patent/JPS5668951A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0213380B2 (en) | 1990-04-04 |
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