JPH0159374U - - Google Patents

Info

Publication number
JPH0159374U
JPH0159374U JP15491987U JP15491987U JPH0159374U JP H0159374 U JPH0159374 U JP H0159374U JP 15491987 U JP15491987 U JP 15491987U JP 15491987 U JP15491987 U JP 15491987U JP H0159374 U JPH0159374 U JP H0159374U
Authority
JP
Japan
Prior art keywords
magnetic tape
head
magnetic head
magnetic
rotating magnetic
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
JP15491987U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP15491987U priority Critical patent/JPH0159374U/ja
Publication of JPH0159374U publication Critical patent/JPH0159374U/ja
Pending legal-status Critical Current

Links

Description

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

第1図は本考案のスローモーシヨン再生装置を
示すブロツク図、第2図、第4図、及び第5図は
第1及び第2の回転磁気ヘツドの走査位置と磁気
テープの走行位置との相対関係を示す模式図、第
3図は第1図の各部波形を示すタイミングチヤー
トである。 1……シリンダ、2……磁気テープ、2a,2
b……映像信号トラツク、3,4……回転磁気ヘ
ツド、8……サーボ回路、13……マイクロプロ
セツサ。
FIG. 1 is a block diagram showing the slow motion reproducing apparatus of the present invention, and FIGS. 2, 4, and 5 are relative diagrams of the scanning positions of the first and second rotating magnetic heads and the running position of the magnetic tape. FIG. 3 is a schematic diagram showing the relationship, and a timing chart showing waveforms of various parts in FIG. 1. 1... Cylinder, 2... Magnetic tape, 2a, 2
b...Video signal track, 3, 4...Rotating magnetic head, 8...Servo circuit, 13...Microprocessor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁気テープにヘリカル記録された映像信号トラ
ツクのトラツク幅より大なる第1のヘツド幅及び
第1のアジマス角となされ、シリンダに配置され
た第1の回転磁気ヘツドと、前記第1のヘツド幅
より大なる第2のヘツド幅及び前記第1のアジマ
ス角と異なる第2のアジマス角となされ、前記第
1の回転磁気ヘツドから180°の角度を介して
前記シリンダに配置された第2の回転磁気ヘツド
を有する磁気再生機であつて、前記第1及び第2
の回転磁気ヘツドが、前記シリンダに略180°
の角度で巻回されて通常再生時の1/2倍速で連続
走行する磁気テープを交互にヘリカル走査するこ
とにより、前記磁気テープの各映像信号トラツク
から映像信号を再生するスローモーシヨン再生時
において、前記第1の回転磁気ヘツドが前記磁気
テープをヘリカル走査して再生される2フイール
ドの映像信号中の最小エンベロープが、前記第1
の回転磁気ヘツドが前記磁気テープをヘリカル走
査する各走査期間の前半及び後半の何れに存在す
るかを検出する検出部と、前記2フイールドの映
像信号中の最小エンベロープが垂直同期信号の近
傍に最短距離で移動する様に、前記検出部の検出
出力によつて前記磁気テープの走行速度を制御す
る制御部より成ることを特徴とするスローモーシ
ヨン再生装置。
a first rotary magnetic head disposed in a cylinder having a first head width and a first azimuth angle larger than the track width of a video signal track helically recorded on a magnetic tape; a second rotating magnetic head having a larger second head width and a second azimuth angle different from the first azimuth angle and disposed in the cylinder at an angle of 180° from the first rotating magnetic head; a magnetic reproducing machine having a head, the first and second heads;
A rotating magnetic head is attached to the cylinder approximately 180°.
During slow motion playback, video signals are played back from each video signal track of the magnetic tape by alternately helical scanning a magnetic tape that is wound at an angle of The minimum envelope in the two-field video signal reproduced by the first rotating magnetic head helically scanning the magnetic tape is determined by the first
a detection unit for detecting whether the rotating magnetic head exists in the first half or the second half of each scanning period in which the magnetic tape is helically scanned; 1. A slow-motion playback device comprising: a control section that controls the traveling speed of the magnetic tape based on the detection output of the detection section so that the magnetic tape moves by a certain distance.
JP15491987U 1987-10-09 1987-10-09 Pending JPH0159374U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15491987U JPH0159374U (en) 1987-10-09 1987-10-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15491987U JPH0159374U (en) 1987-10-09 1987-10-09

Publications (1)

Publication Number Publication Date
JPH0159374U true JPH0159374U (en) 1989-04-13

Family

ID=31432083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15491987U Pending JPH0159374U (en) 1987-10-09 1987-10-09

Country Status (1)

Country Link
JP (1) JPH0159374U (en)

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