JPS6070940U - magnetic recording and reproducing device - Google Patents

magnetic recording and reproducing device

Info

Publication number
JPS6070940U
JPS6070940U JP16061283U JP16061283U JPS6070940U JP S6070940 U JPS6070940 U JP S6070940U JP 16061283 U JP16061283 U JP 16061283U JP 16061283 U JP16061283 U JP 16061283U JP S6070940 U JPS6070940 U JP S6070940U
Authority
JP
Japan
Prior art keywords
video
signal
vertical synchronizing
reproducing device
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
Application number
JP16061283U
Other languages
Japanese (ja)
Inventor
進 大塚
Original Assignee
株式会社日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP16061283U priority Critical patent/JPS6070940U/en
Publication of JPS6070940U publication Critical patent/JPS6070940U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の回路図、第２図は本考案の一実施例の回
路図である。 １・・・ビデオアンプ、２・・・同期分離回路、３・・
・フィルタ、４・・・位相検波器、５・・・モータ、６
・・・ビデオ信号入力、７・・・検出器、８・・・切換
回路、９・・・発振回路。FIG. 1 is a conventional circuit diagram, and FIG. 2 is a circuit diagram of an embodiment of the present invention. 1...Video amplifier, 2...Synchronization separation circuit, 3...
・Filter, 4... Phase detector, 5... Motor, 6
...Video signal input, 7.Detector, 8.Switching circuit, 9.Oscillation circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 音声信号とビデオ信号を記録再生でき、記録時ビデオ信
号の表置同期信号によりビデオヘッドの回転数を一定に
制御することができるヘリカルスキャン方式ビデオテー
プレコーダにおいて、ビデオ信号が無信号になった時、
垂直同期信号と同じ周波数の疑似垂直同期信号に垂直同
期信号を切り換えることによりビデオ信号が無信号時で
もビ、デオヘット回転数を制御し、正常に記録再生がで
きることを特徴とする磁気記録再生装置。In a helical scan video tape recorder that can record and play back audio and video signals, and that can control the number of rotations of the video head to a constant level using a synchronization signal for the video signal during recording, when the video signal becomes silent. ,
A magnetic recording/reproducing device characterized in that by switching the vertical synchronizing signal to a pseudo vertical synchronizing signal having the same frequency as the vertical synchronizing signal, the video head rotation speed can be controlled even when there is no video signal, and normal recording and reproduction can be performed.
JP16061283U 1983-10-19 1983-10-19 magnetic recording and reproducing device Pending JPS6070940U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16061283U JPS6070940U (en) 1983-10-19 1983-10-19 magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16061283U JPS6070940U (en) 1983-10-19 1983-10-19 magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6070940U true JPS6070940U (en) 1985-05-20

Family

ID=30353215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16061283U Pending JPS6070940U (en) 1983-10-19 1983-10-19 magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6070940U (en)

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