JPS62158613U

JPS62158613U -

Info

Publication number: JPS62158613U
Application number: JP4535386U
Authority: JP
Priority date: 1986-03-27
Filing date: 1986-03-27
Publication date: 1987-10-08

Description

[Brief explanation of the drawing]

第１図は本考案装置の要部概略構成を示すブロ
ツク図、第２図はヘツド目づまり検出のための波
形説明図、第３図はヘツド配置説明図、第４図は
磁気テープへの記録状態説明図、第５図は磁気テ
ープ上のインターリーブマツプへの記録状態説明
図である。１……試験用記録信号発振器、２……切換スイ
ツチ、３……ヘツドアンプ、４……データプロセ
ツサー、５……エンベロープ検出部、６……コン
パレーター、７……パルスジエネレーター、８…
…コントローラ、９……キー入力部、１０……デ
イスプレイ部、１１……メカニカルコントロール
部、１２……ヘツドチエツクセレクター、ＨＤ１
，ＨＤ２……第１、第２回転ヘツド、ＭＴ……磁
気テープ。 Fig. 1 is a block diagram showing the schematic configuration of the main parts of the device of the present invention, Fig. 2 is an explanatory diagram of waveforms for detecting head clogging, Fig. 3 is an explanatory diagram of the head arrangement, and Fig. 4 is a recording on magnetic tape. FIG. 5 is an explanatory diagram of the recording state on the interleave map on the magnetic tape. 1... Test recording signal oscillator, 2... Selector switch, 3... Head amplifier, 4... Data processor, 5... Envelope detector, 6... Comparator, 7... Pulse generator, 8 …
... Controller, 9 ... Key input section, 10 ... Display section, 11 ... Mechanical control section, 12 ... Head check selector, HD1
, HD2...first and second rotating heads, MT...magnetic tape.

Claims

[Claims for Utility Model Registration] Data signals are recorded on the magnetic tape or data signals are recorded from the magnetic tape by rotating rotary heads arranged at 180 degrees from each other while being inclined with respect to the longitudinal direction of the tape. In a magnetic tape device, a tracking servo signal including a synchronization signal and a pilot signal is recorded on each track along with the data signal, and the tracking servo signal is used to perform tracking servo. The head abnormality detection device includes: a test recording signal generating means for supplying a test recording signal to the rotary head when transitioning to a recording mode; a mechanism control unit that puts the magnetic tape device into a pause state when transitioning to a recording mode; and a first rotating head. In a first recording cycle by the head, the head records the test recording signal on the magnetic tape, and in a next recording cycle by the head, reproduces the recorded test recording signal, and in a second rotation. 1st by head
a controller that causes the head to record the test recording signal on the magnetic tape in a recording cycle, and causes the head to reproduce the recorded test recording signal in the next recording cycle by the head; 1. A head abnormality detection device comprising: detecting means for detecting abnormalities in the first and second rotary heads based on the levels of reproduction signals output from the first and second rotary heads.