JPS6372736U

JPS6372736U -

Info

Publication number: JPS6372736U
Application number: JP16635886U
Authority: JP
Priority date: 1986-10-28
Filing date: 1986-10-28
Publication date: 1988-05-16

Description

[Brief explanation of the drawing]

第１図は本考案の磁気記録再生装置のブロツク
図、第２図はそのタイミングチヤート、第３図は
そのトラツクトレースの説明図、第４図及び第５
図は従来の磁気記録再生装置のトラツクトレース
の説明図である。１，２……切換手段、３……ローパスフイルタ
、４……整流回路、５，６……サンプルホールド
回路、７，８……発生回路、９……バンドパスフ
イルタ、１０……検出回路、１１……差動増幅回
路、１２……サーボ回路、１３……モータ、１４
……制御手段、１５……入力手段。 Fig. 1 is a block diagram of the magnetic recording/reproducing apparatus of the present invention, Fig. 2 is its timing chart, Fig. 3 is an explanatory diagram of its track trace, and Figs. 4 and 5.
The figure is an explanatory diagram of a track trace of a conventional magnetic recording/reproducing device. 1, 2...Switching means, 3...Low pass filter, 4...Rectifier circuit, 5, 6...Sample hold circuit, 7, 8...Generation circuit, 9...Band pass filter, 10...Detection circuit, 11...Differential amplifier circuit, 12...Servo circuit, 13...Motor, 14
...Control means, 15...Input means.

Claims

[Scope of utility model registration request]

a pair of rotating heads spaced 180 degrees apart;
a tracking error signal generating circuit for generating a tracking error signal corresponding to a tracing state of the track of the rotary head; an input means for inputting a play mode or an after recording mode; switching means for switching the tracking error signal so as to cause the tracking error signal to be traced to substantially coincide with the center of the track, and to cause the trace to be traced so that its end substantially coincides with the end of the track in the after-recording mode. A magnetic recording/reproducing device characterized by: