JPS5745787A - Recording and reproducing method for magnetic video record and reproduce - Google Patents
Recording and reproducing method for magnetic video record and reproduceInfo
- Publication number
- JPS5745787A JPS5745787A JP55121634A JP12163480A JPS5745787A JP S5745787 A JPS5745787 A JP S5745787A JP 55121634 A JP55121634 A JP 55121634A JP 12163480 A JP12163480 A JP 12163480A JP S5745787 A JPS5745787 A JP S5745787A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- reproducing
- black level
- recording
- reproduced
- 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)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE:To obtain a reproduced picture that closely resembles to the original picture by generating and recording a composite video signal that contains a synchronizing signal, black level signal and video signal in a scanning period, and taking out the synchronizing signal from the signal when reproducing, and reproducing d.c. component from reproduced black level. CONSTITUTION:At the time of video recording, a composite video signal containing a black level signal is generated during a scanning period or in a section where there is no video signal and delayed for a specified time from the synchronizing signal and recorded in a VTR10. When the reproducing composite video signal PCVS is reproduced, the reproducing synchronizing signal PT1 is separated by a synchronizing signal separator 12 and a reproducing black level recording time zone PT2 delayed for a specified time is detected by a black level recording time zone detector 13 on the basis of the signal PT1. The reproducing black level signal PSB of the signal PT2 in the signal PCVS held in a sampling and holding device 14 is extracted, and the difference between the signals PCVS and PBS is determined by a differential amplifier 15, and d.c. reproduced signal PDC is outputted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121634A JPS5745787A (en) | 1980-08-30 | 1980-08-30 | Recording and reproducing method for magnetic video record and reproduce |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121634A JPS5745787A (en) | 1980-08-30 | 1980-08-30 | Recording and reproducing method for magnetic video record and reproduce |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5745787A true JPS5745787A (en) | 1982-03-15 |
Family
ID=14816114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55121634A Pending JPS5745787A (en) | 1980-08-30 | 1980-08-30 | Recording and reproducing method for magnetic video record and reproduce |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5745787A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6151076A (en) * | 1984-08-21 | 1986-03-13 | Tomoegawa Paper Co Ltd | Adhesive tape |
-
1980
- 1980-08-30 JP JP55121634A patent/JPS5745787A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6151076A (en) * | 1984-08-21 | 1986-03-13 | Tomoegawa Paper Co Ltd | Adhesive tape |
| JPH0228623B2 (en) * | 1984-08-21 | 1990-06-25 | Tomoegawa Paper Co Ltd |
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