JPS5897793U - magnetic recording and playback device - Google Patents
magnetic recording and playback deviceInfo
- Publication number
- JPS5897793U JPS5897793U JP19236181U JP19236181U JPS5897793U JP S5897793 U JPS5897793 U JP S5897793U JP 19236181 U JP19236181 U JP 19236181U JP 19236181 U JP19236181 U JP 19236181U JP S5897793 U JPS5897793 U JP S5897793U
- Authority
- JP
- Japan
- Prior art keywords
- recorded
- drive
- tape
- level
- magnetic recording
- 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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＶＴＲの記録パターンを模式的に示すパターン
図、第２図は本考案の１実施例におけるＶＴＲの要部ブ
ロック図である。
４・・・・・・入力端子、５」・・・・・信号処理回路
、６・・・・・・ゲート回路、７・・・・・・同期分離
回路、８・・・・・・カウンタ、９・！・・・・ゲート
パルス発生器、１０．１３・・・・・・回転ヘッド、１
１・・・・・・遅延回路、１２・・・・・・キャプスタ
ン駆動手段、１４・・・・・・エンベロープ検波手段、
１５・・・・・・レベル判別器、１６・・・・・・表示
手段。FIG. 1 is a pattern diagram schematically showing a recording pattern of a VTR, and FIG. 2 is a block diagram of essential parts of a VTR in an embodiment of the present invention. 4...Input terminal, 5"...Signal processing circuit, 6...Gate circuit, 7...Synchronization separation circuit, 8...Counter ,9・! ...Gate pulse generator, 10.13 ... Rotating head, 1
1... Delay circuit, 12... Capstan driving means, 14... Envelope detection means,
15...Level discriminator, 16...Display means.
Claims (1)
動可能なテープ駆動手段を有し、前記定速度駆動時には
２個の回転ヘッドを交互に使用して記録すべき映像信号
の全フィールドを順次前記磁気テープに記録し、前記間
欠駆動時には、そのテープの停止時に前記２個の回転ヘ
ッドの一方の回転ヘッドにより記録すべき映像信号の１
フイールドを間欠的に記録するとともに、他方の回転ヘ
ッドによりその記録信号を再生し、その再生信号のレベ
ルを検出し、所定のレベル以下である場合表示手段を駆
動するよう構成した磁気録画再生装置。The tape drive means is capable of selectively driving the magnetic tape at a predetermined constant speed drive or intermittently, and during the constant speed drive, two rotary heads are alternately used to drive the entire field of the video signal to be recorded. One of the video signals to be recorded on the magnetic tape sequentially, and during the intermittent driving, one of the two rotary heads to be recorded when the tape is stopped.
A magnetic recording/reproducing device configured to intermittently record a field, reproduce the recorded signal using the other rotary head, detect the level of the reproduced signal, and drive display means if the level of the reproduced signal is below a predetermined level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19236181U JPS5897793U (en) | 1981-12-22 | 1981-12-22 | magnetic recording and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19236181U JPS5897793U (en) | 1981-12-22 | 1981-12-22 | magnetic recording and playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5897793U true JPS5897793U (en) | 1983-07-02 |
Family
ID=30105777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19236181U Pending JPS5897793U (en) | 1981-12-22 | 1981-12-22 | magnetic recording and playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5897793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284803A (en) * | 1985-06-10 | 1986-12-15 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5354920A (en) * | 1976-10-29 | 1978-05-18 | Nec Home Electronics Ltd | Record control unit for video signal recording/reproducing device |
| JPS54156504A (en) * | 1978-05-31 | 1979-12-10 | Hitachi Ltd | Head stain detecting circuit |
-
1981
- 1981-12-22 JP JP19236181U patent/JPS5897793U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5354920A (en) * | 1976-10-29 | 1978-05-18 | Nec Home Electronics Ltd | Record control unit for video signal recording/reproducing device |
| JPS54156504A (en) * | 1978-05-31 | 1979-12-10 | Hitachi Ltd | Head stain detecting circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284803A (en) * | 1985-06-10 | 1986-12-15 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
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