JPS5544215A - Video recording and reproducing unit - Google Patents
Video recording and reproducing unitInfo
- Publication number
- JPS5544215A JPS5544215A JP11581078A JP11581078A JPS5544215A JP S5544215 A JPS5544215 A JP S5544215A JP 11581078 A JP11581078 A JP 11581078A JP 11581078 A JP11581078 A JP 11581078A JP S5544215 A JPS5544215 A JP S5544215A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pulse
- delay circuit
- delay
- signal
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE: To enable to obtain equivalent vertical synchronizing signal without malfuction, in VTR or the like different in speed at recording and reproduction.
CONSTITUTION: Two heads are selected into CH1 and CH2 to the pulse 5a from the selection pulse generation circuit 5. The control pulse detection circuit 6 reads in the control pulse 6a of a given track of the magnetic tape and this triggers the monostable multivibrator 15. The reproduction speed is halved, and the pulse 6a has double period than 5a. The output of the monostable multivibrator 15 is fed to the delay circuit 30. Further, the tape running speed selection switch circuit 16 controls the delay circuit 30 via the delay circuit 17 to gate the signal passing. The pulse 5a, output of the circuit 30 and the signal through the phase inversion circuit 18 are added through the delay circuits 19 and 20 via the AND gates 22 and 24 to obtain the equivalent vertical synchronizing signal and to avoid malfunction by means of suitable usage of delay circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581078A JPS5544215A (en) | 1978-09-22 | 1978-09-22 | Video recording and reproducing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581078A JPS5544215A (en) | 1978-09-22 | 1978-09-22 | Video recording and reproducing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5544215A true JPS5544215A (en) | 1980-03-28 |
Family
ID=14671647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11581078A Pending JPS5544215A (en) | 1978-09-22 | 1978-09-22 | Video recording and reproducing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5544215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780883A (en) * | 1980-11-06 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Rotary head type magnetic picture recording and reproducing device |
| US4404601A (en) * | 1980-02-16 | 1983-09-13 | Sony Corporation | Head tracking control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502315A (en) * | 1973-05-15 | 1975-01-10 | ||
| JPS531918A (en) * | 1976-06-25 | 1978-01-10 | Kentarou Kawai | Common roof unit used for shed assembly of gable roof* hip roof* square roof* roof that has gable in upper portion and gradient in four directions in lower portion |
-
1978
- 1978-09-22 JP JP11581078A patent/JPS5544215A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502315A (en) * | 1973-05-15 | 1975-01-10 | ||
| JPS531918A (en) * | 1976-06-25 | 1978-01-10 | Kentarou Kawai | Common roof unit used for shed assembly of gable roof* hip roof* square roof* roof that has gable in upper portion and gradient in four directions in lower portion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404601A (en) * | 1980-02-16 | 1983-09-13 | Sony Corporation | Head tracking control system |
| JPS5780883A (en) * | 1980-11-06 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Rotary head type magnetic picture recording and reproducing device |
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