JPS55163650A - Magnetic picture recorder/reproducer - Google Patents
Magnetic picture recorder/reproducerInfo
- Publication number
- JPS55163650A JPS55163650A JP7293579A JP7293579A JPS55163650A JP S55163650 A JPS55163650 A JP S55163650A JP 7293579 A JP7293579 A JP 7293579A JP 7293579 A JP7293579 A JP 7293579A JP S55163650 A JPS55163650 A JP S55163650A
- Authority
- JP
- Japan
- Prior art keywords
- stoppage
- motor
- take
- rotation
- detected
- 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.)
- Pending
Links
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To ensure the steady low-speed reproduction by detecting the rotation stoppage of the capstan motor receiving the velocity control by the frequency servo loop with the stoppage of the take-up reel's rotation and then giving the forced driving to the same motor.
CONSTITUTION: Capstan motor 1 stops easily owing to its large dynamic friction. With stoppage of the motor, no rotary signal is delivered. As a result, the frequency servo has no operation and the stoppage of motor 1 is continued. Then the fact that no output of take-up sensor 7 to be detected is delivered to the rotation of take- up reel 6 to take up the video tape is detected by sensor output stoppage detecting circuit 8. Thus the stoppage of motor 1 is detected, and forced rotation command circuit 9 is operated by the detection output. And then motor 1 is driven forcedly via amplifier 5. In this way, the steady low-speed reproduction can be continued.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7293579A JPS55163650A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7293579A JPS55163650A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163650A true JPS55163650A (en) | 1980-12-19 |
Family
ID=13503713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7293579A Pending JPS55163650A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163650A (en) |
-
1979
- 1979-06-07 JP JP7293579A patent/JPS55163650A/en active Pending
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