JPS55163649A - Magnetic picture recorder/reproducer - Google Patents
Magnetic picture recorder/reproducerInfo
- Publication number
- JPS55163649A JPS55163649A JP7293479A JP7293479A JPS55163649A JP S55163649 A JPS55163649 A JP S55163649A JP 7293479 A JP7293479 A JP 7293479A JP 7293479 A JP7293479 A JP 7293479A JP S55163649 A JPS55163649 A JP S55163649A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- stoppage
- circuit
- detecting
- continued
- 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
Abstract
PURPOSE: To ensure the steady low-speed reproduction by detecting the stoppage of the capstan motor through the means which receives the speed control by means of the frequency servo loop and then giving the forced driving to the same capstan motor.
CONSTITUTION: Capstan motor 1 stops easily owing to its large dynamic friction, and thus no rotary signal is transmitted. Thus the frequency servo has no action with the stoppage of motor 1 continued. Then the fact that no output of rotational frequency detecting device 2 is delivered for a fixed time is detected by rotary signalstoppage detecting circuit 6. And thus the stoppage of motor 1 is detected. Then forced rotation command circuit 7 is actuated by the detection output of circuit 6, and thus motor 1 is driven forcedly via amplifier 5. As a result, the steady low-speed reproduction can be continued.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7293479A JPS55163649A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7293479A JPS55163649A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163649A true JPS55163649A (en) | 1980-12-19 |
Family
ID=13503682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7293479A Pending JPS55163649A (en) | 1979-06-07 | 1979-06-07 | Magnetic picture recorder/reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163649A (en) |
-
1979
- 1979-06-07 JP JP7293479A patent/JPS55163649A/en active Pending
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