JPS55163649A - Magnetic picture recorder/reproducer - Google Patents

Magnetic picture recorder/reproducer

Info

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
Application number
JP7293479A
Other languages
Japanese (ja)
Inventor
Yoshio Koga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7293479A priority Critical patent/JPS55163649A/en
Publication of JPS55163649A publication Critical patent/JPS55163649A/en
Pending legal-status Critical Current

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
JP7293479A 1979-06-07 1979-06-07 Magnetic picture recorder/reproducer Pending JPS55163649A (en)

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)

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