JPS5491304A - Controller for video tape recorder - Google Patents
Controller for video tape recorderInfo
- Publication number
- JPS5491304A JPS5491304A JP15961977A JP15961977A JPS5491304A JP S5491304 A JPS5491304 A JP S5491304A JP 15961977 A JP15961977 A JP 15961977A JP 15961977 A JP15961977 A JP 15961977A JP S5491304 A JPS5491304 A JP S5491304A
- Authority
- JP
- Japan
- Prior art keywords
- condition
- speed
- drum
- tape
- flop
- 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
Landscapes
- Control Of Velocity Or Acceleration (AREA)
Abstract
PURPOSE: To discriminate the running speed of a mgnetic tape by generating recognizing signals when the running speed of the tape reaches it substantially steady condition.
CONSTITUTION: When a switch is turned on, a magnetic tape starts it running operation, but a flip-flop F2 is still left under its reset condition so that the drum continues its constant speed rotations. When the speed reaches its substantially steady condition, negative pulses are generated at the output terminal of a NAND gate 15. In response to these pulses, the flip-flop F2 is set, and a relay 11 is relased. In a drum drive circuit 10, a potential is fed from a buffer Q9 so that the drum is brought into a servo-rotating condition. Thus, during the time while the running speed of the magnetic tape is at a low value, the video head is placed under a constant speed rotating condition.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15961977A JPS5491304A (en) | 1977-12-28 | 1977-12-28 | Controller for video tape recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15961977A JPS5491304A (en) | 1977-12-28 | 1977-12-28 | Controller for video tape recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5491304A true JPS5491304A (en) | 1979-07-19 |
JPS5644500B2 JPS5644500B2 (en) | 1981-10-20 |
Family
ID=15697663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15961977A Granted JPS5491304A (en) | 1977-12-28 | 1977-12-28 | Controller for video tape recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5491304A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59200589A (en) * | 1983-04-26 | 1984-11-13 | Mitsumi Electric Co Ltd | Magnetic video recording and reproducing device |
-
1977
- 1977-12-28 JP JP15961977A patent/JPS5491304A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59200589A (en) * | 1983-04-26 | 1984-11-13 | Mitsumi Electric Co Ltd | Magnetic video recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS5644500B2 (en) | 1981-10-20 |
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