JPS60102747U - Video tape recorder drum rotation speed correction device - Google Patents
Video tape recorder drum rotation speed correction deviceInfo
- Publication number
- JPS60102747U JPS60102747U JP19775183U JP19775183U JPS60102747U JP S60102747 U JPS60102747 U JP S60102747U JP 19775183 U JP19775183 U JP 19775183U JP 19775183 U JP19775183 U JP 19775183U JP S60102747 U JPS60102747 U JP S60102747U
- Authority
- JP
- Japan
- Prior art keywords
- reference signal
- video tape
- tape recorder
- rotation speed
- correction device
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の１実施例のブロック図である。
１・・・回転ドラム位相制御回路、２・・・ドラムモー
夕、３・・・基準信号検知回路、４・・・擬似基準信号
発生回路、５・・・スイッチング回路。The drawing is a block diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Rotating drum phase control circuit, 2...Drum mode controller, 3...Reference signal detection circuit, 4...Pseudo reference signal generation circuit, 5...Switching circuit.
Claims (1)
転ドラムサーボ系において、再生基準信号の有無を検知
する基準信号検知手段と、該検知手段により再生基準信
号がなくなったことを検知したとき擬似的な基準信号を
導出する擬似基準信号発生手段と、検索モード時に前記
再生基準信号を強制的にカットするスイッチング手段と
、同検索モード時に前記擬似基準信号発生手段より発生
される擬似基準信号の周波数を僅かに変化させる手段と
を具備したことを特徴とす、るビデオテープレコーダの
ドラム回転速度補正装置。In a rotating drum servo system of a radiotape recorder having a high-speed feed search function, there is a reference signal detection means for detecting the presence or absence of a playback reference signal, and a pseudo pseudo reference signal generation means for deriving a reference signal; switching means for forcibly cutting off the reproduced reference signal in the search mode; and switching means for forcibly cutting off the reproduction reference signal in the search mode; 1. A drum rotational speed correcting device for a video tape recorder, characterized by comprising means for changing the rotational speed of a drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19775183U JPS60102747U (en) | 1983-12-20 | 1983-12-20 | Video tape recorder drum rotation speed correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19775183U JPS60102747U (en) | 1983-12-20 | 1983-12-20 | Video tape recorder drum rotation speed correction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60102747U true JPS60102747U (en) | 1985-07-13 |
Family
ID=30423234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19775183U Pending JPS60102747U (en) | 1983-12-20 | 1983-12-20 | Video tape recorder drum rotation speed correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60102747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390050A (en) * | 1986-10-01 | 1988-04-20 | Sharp Corp | Magnetic recording and reproducing device |
-
1983
- 1983-12-20 JP JP19775183U patent/JPS60102747U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390050A (en) * | 1986-10-01 | 1988-04-20 | Sharp Corp | Magnetic recording and reproducing device |
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