JPS62164471U

JPS62164471U -

Info

Publication number: JPS62164471U
Application number: JP5256186U
Authority: JP
Priority date: 1986-04-08
Filing date: 1986-04-08
Publication date: 1987-10-19
Anticipated expiration: 2001-04-08
Also published as: JPH0526864Y2

Description

[Brief explanation of the drawing]

第１図は本考案になる磁気記録再生装置の一実
施例を説明するための回転ヘツドドラムを示す断
面図、第２図は第１及び第２の回転ヘツド対の回
転ヘツドドラム上への配設位置を説明するための
平面図、第３図は第１及び第２の回転ヘツド対の
取付けにおける相対的高さ位置を説明するための
図、第４図は第１の回転ヘツド対が磁気テープ上
に記録した記録トラツクを示す図、第５図は第１
の回転ヘツド対を第２の回転ヘツド対と相対的高
さを等しくした際の標準モード記録の記録トラツ
クパターンと第１の回転ヘツド対の走行軌跡を説
明するための図、第６図は第５図に示す状態で再
生されたＦＭ波形をドラムパルスと対応させて示
す図、第７図は第１の回転ヘツド対を第２の回転
ヘツド対と相対的高さをずらして配設した際の標
準モード記録の記録トラツクパターンと第１の回
転ヘツド対の走行軌跡を説明するための図、第８
図は第７図に示す状態で再生されたＦＭ波形をド
ラムパルスと対応させて示す図、第９図は第１の
回転ヘツド対の回転ドラム上の配設位置を１８０
°位置より１．５Ｈ及び１Ｈずらした場合、各場
合で記録トラツク上に位置する箇所を示す図、第
１０図は第９図に示す各場合において再生を行な
つた際のタイムチヤートを示す図である。２…回転ドラム、５〜８…回転ヘツド、９…磁
気テープ。 FIG. 1 is a sectional view showing a rotary head drum for explaining one embodiment of the magnetic recording/reproducing device according to the present invention, and FIG. 2 is a sectional view showing the arrangement positions of a first and second pair of rotary heads on the rotary head drum. FIG. 3 is a plan view for explaining the relative height positions of the first and second pairs of rotary heads when they are installed, and FIG. Figure 5 shows the recording track recorded in Figure 1.
FIG. 6 is a diagram for explaining the recording track pattern of standard mode recording and the traveling locus of the first pair of rotary heads when the relative height of the pair of rotary heads is made equal to that of the second pair of rotary heads. A diagram showing the FM waveform reproduced in the state shown in Figure 5 in correspondence with a drum pulse, and Figure 7 shows an example when the first pair of rotating heads is arranged with a relative height shifted from the second pair of rotating heads. FIG. 8 is a diagram for explaining the recording track pattern of standard mode recording of
The figure shows the FM waveform reproduced in the state shown in Figure 7 in correspondence with the drum pulse, and Figure 9 shows the arrangement position of the first pair of rotating heads on the rotating drum at 180 degrees.
Figure 10 shows the position on the recording track when shifted by 1.5H and 1H from the position shown in Figure 9. Figure 10 is a diagram showing the time chart when playing back in each case shown in Figure 9. It is. 2...Rotating drum, 5-8...Rotating head, 9...Magnetic tape.

Claims

[Scope of utility model registration request]

a first pair of rotary heads provided at different relative heights so as to record one field's worth of information on mutually different tracks on the magnetic tape during periods when the magnetic tape is intermittently running; and a second pair of rotary heads that are arranged at equal relative heights to each other and that record on the continuously running magnetic tape, and the first or second pair of rotary heads record on the magnetic tape. A magnetic recording and reproducing device configured to be able to selectively reproduce information recorded on the magnetic tape by the first pair of rotating heads by running the magnetic tape intermittently, and selectively by the second pair of rotating heads by continuously running the magnetic tape. .