JPH0574078A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPH0574078A
JPH0574078A JP23264891A JP23264891A JPH0574078A JP H0574078 A JPH0574078 A JP H0574078A JP 23264891 A JP23264891 A JP 23264891A JP 23264891 A JP23264891 A JP 23264891A JP H0574078 A JPH0574078 A JP H0574078A
Authority
JP
Japan
Prior art keywords
magnetic head
memory
signal
data
speed reference
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
JP23264891A
Other languages
Japanese (ja)
Inventor
Shunji Yano
俊次 矢野
Original Assignee
Nec Eng Ltd
日本電気エンジニアリング株式会社
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 Nec Eng Ltd, 日本電気エンジニアリング株式会社 filed Critical Nec Eng Ltd
Priority to JP23264891A priority Critical patent/JPH0574078A/en
Publication of JPH0574078A publication Critical patent/JPH0574078A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To minimize the vibration of a magnetic head immediately after positioning the magnetic head by selecting an optimum speed reference signal from among plural speed reference signals prepared preliminarily at the time of starting a device and to write/read a data normally even when the variation of the torque of a magnetic head moving motor is large. CONSTITUTION:A difference data 10 to be a difference between the stopping position of the magnetic head and the present position of the magnetic head is inputted to memories 2-1-2-n. After a micro processor 1 selects the memory 2-1 to the memory 2-n in this order successively and respective magnetic heads are positioned, a magnetic head positional signal 40 is stored in respective memories. Then, the memory of the minimum value of the magnetic head position signal is selected and fixed thereafter and the start of the device is ended.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は磁気ディスク装置に関し、特に磁気ヘッドの位置決めに関する。 The present invention relates to an magnetic disk device, and more particularly to a magnetic head positioning.

【0002】 [0002]

【従来の技術】従来、この種の磁気ディスク装置においては、磁気ヘッドの移動、及び位置決めに関し、速度基準信号のデータが書き込まれているメモリが存在し、一種類の速度基準信号を用いて、磁気ヘッドの移動速度を規定している。 Conventionally, in a magnetic disk apparatus of this type, the movement of the magnetic head, and to a positioning, there is a memory in which data of the speed reference signal is written, using a single type of speed reference signal, It defines the moving speed of the magnetic head.

【0003】従来装置の磁気ヘッド移動動作について図3を参照し説明する。 [0003] The magnetic head moving operation of the conventional apparatus will be described with reference to FIG. 磁気ヘッドの移動時に、目的の磁気ヘッドの停止位置と、現在位置している磁気ヘッドの位置との差であるディファレンスデータ10が、磁気ヘッドの速度を決める速度基準信号のデータが書き込まれているメモリ3に入力される。 During movement of the magnetic head, the stop position of the object of magnetic heads, the Difference data 10 which is the difference between the position of the magnetic head is currently located, the data of the speed reference signal for determining the speed of the magnetic head is written is input to the memory 3 are. メモリ3は入力されたディファレンスデータ10に対応する速度基準信号50のデータを、磁気ヘッド位置決め回路8に出力する。 Memory 3 the data of the speed reference signal 50 corresponding to the Difference data 10, and outputs to the magnetic head positioning circuit 8. 磁気ヘッド位置決め回路8は、その速度基準信号50によって規定された磁気ヘッドの移動速度で磁気ヘッドの移動を行う。 Magnetic head positioning circuit 8, to move the magnetic head at a moving speed of the magnetic head defined by the speed reference signal 50.

【0004】磁気ヘッドの位置決め直後では磁気ヘッドに振動が発生するため、この振動がおさまり、磁気ヘッドを通して磁気ディスク媒体にデータの書き込みが可能となるまで、一定時間(以後セトリングタイムと呼ぶ) [0004] Since the vibration in the magnetic head immediately after positioning of the magnetic head occurs, the vibrations subside, through the magnetic head to write data on the magnetic disk medium is possible, a certain time (hereinafter referred to as settling time)
必要となる。 Is required. 位置決め直後の磁気ヘッドの振動量は、速度基準信号及びモータのトルクのばらつき等で大きく影響を受けるが、従来のディスクでは、最適な一種類の速度基準信号50を用いている。 Vibration of the magnetic head after positioning is greatly affected by variations in the speed reference signal and the motor torque or the like, in the conventional disk, and using the optimum one type of speed reference signal 50.

【0005】 [0005]

【発明が解決しようとする課題】従来の磁気ディスク装置では、磁気ヘッド移動モータのトルクのばらつき等により、磁気ヘッド位置決め直後の磁気ヘッドの振動が予測より大きくなると、セトリングタイム内では対応できなくなる場合がある。 In THE INVENTION Problems to be Solved by the conventional magnetic disk apparatus, the variation or the like of the torque of the magnetic head moving motor, the vibration of the magnetic head after the magnetic head positioning is greater than expected, not be able to respond in a settling time there is. このような場合には、磁気ヘッドが振動している内に磁気ディスク媒体にデータを書き込むこととなり、以後読み出せなくなるという問題が存在した。 In such a case, it becomes possible to write data to the magnetic disk medium within which the magnetic head is vibrating, and there is a problem that reading will not put out hereinafter.

【0006】本発明の目的は、磁気ヘッドの移動速度を決める速度基準信号のデータが書き込まれた複数のメモリを備え、デジタル磁気ヘッド位置信号により、最適な速度基準信号データの書き込まれたメモリ選択する磁気ディスク装置を提供するにある。 An object of the present invention comprises a plurality of memory in which data of the velocity reference signal for determining the moving speed of the magnetic head is written, the digital magnetic head position signal, a memory selection written with optimum speed reference signal data to provide a magnetic disk apparatus.

【0007】 [0007]

【課題を解決するための手段】本発明の磁気ディスク装置は、磁気ヘッドの移動速度を決める速度基準信号のデータが書き込まれている複数のメモリと、アナログ信号である磁気ヘッド位置信号をデジタル信号に変換するアナログ/デジタル変換回路と、デジタル信号に変換された前記磁気ヘッド位置信号により複数の前記メモリの中から最適な速度基準信号データが書き込まれた前記メモリを選択するマイクロプロセッサを具備する。 The magnetic disk apparatus of the present invention, in order to solve the problems] includes a plurality of memory where the data of the velocity reference signal for determining the moving speed of the magnetic head is written, a digital signal magnetic head position signal is an analog signal includes an analog / digital conversion circuit for converting the microprocessor for selecting the memory the optimum speed reference signal data from a plurality of said memory by said magnetic head position signal converted into a digital signal is written in.

【0008】 [0008]

【実施例】次に本発明について図面を参照して説明する。 EXAMPLES The present invention will be described below with reference to the drawings. 図1は本発明の一実施例を示すブロック図で、図2 Figure 1 is a block diagram showing an embodiment of the present invention, FIG. 2
は本実施例のフローチャートである。 Is a flow chart of the present embodiment. 本発明の磁気ヘッドの位置決めは、磁気ヘッドの速度を決める速度基準信号のデータが書き込まれている複数のメモリ2−1,2 Positioning the magnetic head of the present invention, a plurality of data speed reference signal for determining the speed of the magnetic head is written memory 2-1, 2
−2,〜2−nと、アナログ信号の磁気ヘッド位置信号30をデジタル信号に変換するA/Dコンバータ5と、 -2, and to 2-n, an A / D converter 5 for converting the magnetic head position signal 30 of the analog signal into a digital signal,
アナログ信号からデジタル信号に変換された磁気ヘッド位置信号40により最適な速度基準信号のデータが書き込まれたメモリ2−1〜2−nを選択するマイクロプロセッサ1からなる。 A microprocessor 1 for selecting the memory 2-1 to 2-n in which data is written in the optimal speed reference signal by the magnetic head position signal 40 which is converted from an analog signal to a digital signal.

【0009】図2において、磁気ディスク装置は装置起動時に、磁気ヘッド移動動作を行う(S1)。 [0009] In FIG. 2, the magnetic disk apparatus at the time of device activation, performs magnetic head moving operation (S1). まず、マイクロプロセッサ1がメモリ2−1を選択する(S First, the microprocessor 1 to select the memory 2-1 (S
2)。 2). 磁気ヘッドの移動動作が終了して(S3)磁気ヘッドが位置決めしてから(S4)、ヘッド位置決め回路6から出力されるアナログ磁気ヘッド位置信号30は、 And movement of the magnetic head is completed (S3) magnetic head from the position (S4), an analog magnetic head position signal 30 output from the head positioning circuit 6,
A/Dコンバータ5に入力され(S5)、デジタル磁気ヘッド位置信号40に変換される。 It is input to the A / D converter 5 (S5), and converted into digital magnetic head position signal 40. マイクロプロセッサ1は、デジタル磁気ヘッド位置信号40を読みとり記憶する(S6)。 The microprocessor 1 reads and stores the digital magnetic head position signal 40 (S6).

【0010】次に、マイクロプロセッサ1は、メモリ2 [0010] Next, the microprocessor 1, the memory 2
−2を選択し、上記と同じ動作を行い、デジタル磁気ヘッド位置信号40のデータを記憶する。 Select -2 performs the same operation as described above, stores the data of the digital magnetic head position signal 40. こうしてメモリ2−nまで選択(S7)して上記の動作を行い、それぞれのメモリ選択時のデジタル磁気ヘッド位置信号40を貯えておく。 Thus selected until the memory 2-n (S7) to perform the above operation, previously stored digital magnetic head position signal 40 at the respective memory selection.

【0011】マイクロプロセッサ1は、デジタル磁気ヘッド信号40が最小値である例えばメモリ2−1を選択し、以後固定(S8)して装置起動動作を終了する(S [0011] The microprocessor 1, a digital magnetic head signal 40 selects, for example, memory 2-1 is the minimum value, and terminates the subsequent fixing (S8) to device starting operation (S
9)。 9). これにより最適な速度基準信号の書き込まれたメモリ2−1が選択され、磁気ヘッド位置決め直後の磁気ヘッドの振動を縮少する。 Thereby optimal speed reference signal of written memory 2-1 is selected, to scaled down vibration of the magnetic head after the magnetic head positioning.

【0012】 [0012]

【発明の効果】以上説明したように本発明は、磁気ヘッドの速度を決める速度基準信号のデータが書き込まれた複数のメモリと、アナログ信号の磁気ヘッド位置信号をデジタル信号に変換するA/Dコンバータと、アナログ信号からデジタル信号に変換された磁気ヘッド位置信号により最適な速度基準信号のデータが書き込まれたメモリを選択するマイクロプロセッサを具備することにより、磁気ヘッド位置決め直後の磁気ヘッドの振動を縮小することが可能となり、磁気ヘッド移動モータのトルクのばらつきが大きい場合でも、正常にデータのリード及びライトができる効果がある。 The present invention described above, according to the present invention includes a plurality of memory where the data of the velocity reference signal is written to determine the speed of the magnetic head, A / D converting the magnetic head position signal of an analog signal into a digital signal converter and, by having a microprocessor for selecting a memory in which data is written in the optimal speed reference signal by the magnetic head position signal converted from an analog signal to a digital signal, the vibration of the magnetic head after the magnetic head positioning it is possible to reduce, even if variations in the torque of the magnetic head moving motor is large, there is an effect that can read and write the data normally.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施例を示すブロック図である。 1 is a block diagram showing an embodiment of the present invention.

【図2】本実施例のフローチャートである。 2 is a flow chart of the present embodiment.

【図3】従来の磁気ヘッド位置回路のブロック図である。 3 is a block diagram of a conventional magnetic head position circuit.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 マイクロプロセッサ 2−1〜2−n,4 メモリ 5 A/Dコンバータ 6,8 ヘッド位置決め回路 1 microprocessor 2-1 to 2-n, 4 memory 5 A / D converter 6 and 8 the head positioning circuit

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 磁気ヘッドの移動速度を決める速度基準信号のデータが書き込まれている複数のメモリと、アナログ信号である磁気ヘッド位置信号をデジタル信号に変換するアナログ/デジタル変換回路と、デジタル信号に変換された前記磁気ヘッド位置信号により複数の前記メモリの中から最適な速度基準信号データが書き込まれた前記メモリを選択するマイクロプロセッサを具備することを特徴とする磁気ディスク装置。 And 1. A plurality of data speed reference signal for determining the moving speed of the magnetic head is written memory, an analog / digital conversion circuit for converting the magnetic head position signal to a digital signal which is an analog signal, a digital signal magnetic disk apparatus characterized by comprising a microprocessor optimum speed reference signal data from a plurality of said memory to select the memory written by the transformed the magnetic head position signal.
JP23264891A 1991-09-12 1991-09-12 Magnetic disk device Pending JPH0574078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23264891A JPH0574078A (en) 1991-09-12 1991-09-12 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23264891A JPH0574078A (en) 1991-09-12 1991-09-12 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPH0574078A true JPH0574078A (en) 1993-03-26

Family

ID=16942590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23264891A Pending JPH0574078A (en) 1991-09-12 1991-09-12 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPH0574078A (en)

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US6240550B1 (en) 1998-07-21 2001-05-29 Touchtunes Music Corporation System for remote loading of objects or files in order to update software
US9608583B2 (en) 2000-02-16 2017-03-28 Touchtunes Music Corporation Process for adjusting the sound volume of a digital sound recording
US9646339B2 (en) 2002-09-16 2017-05-09 Touchtunes Music Corporation Digital downloading jukebox system with central and local music servers
US9769566B2 (en) 1998-07-22 2017-09-19 Touchtunes Music Corporation Sound control circuit for a digital audiovisual reproduction system
US9774906B2 (en) 2009-03-18 2017-09-26 Touchtunes Music Corporation Entertainment server and associated social networking services
US9919214B2 (en) 2000-09-15 2018-03-20 Touchtunes Music Corporation Jukebox entertainment system having multiple choice games relating to music
US9921717B2 (en) 2013-11-07 2018-03-20 Touchtunes Music Corporation Techniques for generating electronic menu graphical user interface layouts for use in connection with electronic devices
US9922547B2 (en) 1998-07-22 2018-03-20 Touchtunes Music Corporation Remote control unit for activating and deactivating means for payment and for displaying payment status
US9953481B2 (en) 2007-03-26 2018-04-24 Touchtunes Music Corporation Jukebox with associated video server
US9953341B2 (en) 2008-01-10 2018-04-24 Touchtunes Music Corporation Systems and/or methods for distributing advertisements from a central advertisement network to a peripheral device via a local advertisement server
US9959012B2 (en) 2009-03-18 2018-05-01 Touchtunes Music Corporation Digital jukebox device with improved karaoke-related user interfaces, and associated methods
US9990615B2 (en) 2007-09-24 2018-06-05 Touchtunes Music Corporation Digital jukebox device with karaoke and/or photo booth features, and associated methods
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US10068279B2 (en) 2000-02-23 2018-09-04 Touchtunes Music Corporation Process for ordering a selection in advance, digital system and jukebox for embodiment of the process
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US10169773B2 (en) 2008-07-09 2019-01-01 Touchtunes Music Corporation Digital downloading jukebox with revenue-enhancing features
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