JPH02128301A - Disk unit - Google Patents

Disk unit

Info

Publication number
JPH02128301A
JPH02128301A JP28331288A JP28331288A JPH02128301A JP H02128301 A JPH02128301 A JP H02128301A JP 28331288 A JP28331288 A JP 28331288A JP 28331288 A JP28331288 A JP 28331288A JP H02128301 A JPH02128301 A JP H02128301A
Authority
JP
Japan
Prior art keywords
recording
magnetic
reproducing
head
disk
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
JP28331288A
Other languages
Japanese (ja)
Inventor
Koji Hatayama
畑山　功二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC IC Microcomputer Systems Co Ltd
Original Assignee
NEC IC Microcomputer Systems Co Ltd
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 IC Microcomputer Systems Co Ltd filed Critical NEC IC Microcomputer Systems Co Ltd
Priority to JP28331288A priority Critical patent/JPH02128301A/en
Publication of JPH02128301A publication Critical patent/JPH02128301A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5569—Track change, selection or acquisition by displacement of the head across disk tracks details of specially adapted mobile parts, e.g. electromechanical control devices
    • G11B5/5578—Multiple actuators addressing the same disk, e.g. to improve data rate or access rate

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To simultaneously execute recording and reproducing, and also, to shorten a seek time by providing plural pieces of magnetic heads per one recording surface of a magnetic disk for recording and reproducing the information. CONSTITUTION:On the recording surface of a magnetic disk 1 for recording and reproducing the information, plural pieces of magnetic heads 2 - 5 are provided per one recording surface. Control logics 6 - 9 control independently and separately all of each magnetic head 2 - 5. Also, by using one control logic 10, a head selecting circuit 11 is added, the recording or reproducing surface of the magnetic disk 1 is divided, the magnetic heads 2 - 5 are allocated at every area (track), and by selecting the magnetic head by the head selecting circuit 11, recording or reproducing is executed. In such a way, recording and reproducing can be executed simultaneously, and also, by determining a share area of each magnetic head, a seek time can be shortened.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はディスクユニットに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a disk unit.

〔従来の技術〕[Conventional technology]

従来、ディスクユニットは、数枚のディスクをもち、各
ディスクの記録面に、磁気ヘッドをそれぞれ１個配置し
て、記録および再生を行なっている。Conventionally, a disk unit has several disks, and one magnetic head is arranged on the recording surface of each disk to perform recording and reproduction.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のディスクユニットは、磁気ディスクの記
録面出りに磁気ヘッドが１個しかなかったので、磁気デ
ィスクに同時に記録または再生するようなことはできな
かった。The above-mentioned conventional disk unit had only one magnetic head on the recording surface of the magnetic disk, so it was not possible to simultaneously record on or read from the magnetic disk.

また、一般に磁気ディスクはシーク時間が長く、記録ま
たは再生に時間がかかるという問題がある。In addition, magnetic disks generally have a problem in that seek time is long and recording or reproduction takes time.

さらに、磁気ディスクの記録容量を増大させるために、
例えばトラック数を増加させて記録密度を上げた場合、
ステップモータ式のドライブの場合においては、最大シ
ーク時間が増大するという欠点があった。Furthermore, in order to increase the recording capacity of magnetic disks,
For example, if you increase the recording density by increasing the number of tracks,
In the case of a step motor type drive, there is a drawback that the maximum seek time increases.

本発明の目的は、Ｌ記の事情に鑑み、記録と再生が同時
にでき、シーク時間が短くできるとともに、磁気ディス
クの記録容量を増大させても、最大シーク時間が増大し
ないディスクユニットを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a disk unit in which recording and reproduction can be performed simultaneously, the seek time can be shortened, and the maximum seek time does not increase even if the recording capacity of the magnetic disk is increased. It is in.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のディスクユニットは、情報を記録・再生する磁
気ディスクの記録面に、ｌ記録面あたりに複数個の磁気
ヘッドを備えたものである。The disk unit of the present invention includes a plurality of magnetic heads per recording surface of a magnetic disk for recording and reproducing information.

〔作用〕[Effect]

磁気ディスクの記録面に、磁気ヘッドを複数設けである
ので、記録と再生が同時にでき、また各磁気ヘッドの分
担エリアを定めることによってシーク時間を短くできる
。Since a plurality of magnetic heads are provided on the recording surface of the magnetic disk, recording and reproduction can be performed simultaneously, and seek time can be shortened by determining the assigned area for each magnetic head.

〔実施例〕〔Example〕

以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第１図は本発明の一実施例のディスクユニットの概略構
成図で、第２図はこの実施例の制御方法を示す説明図で
、第３図はこの実施例の別の制御方法を示す説明図であ
る。この実施例では、磁気ヘッドが４個等角度で配こさ
れている。FIG. 1 is a schematic configuration diagram of a disk unit according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a control method of this embodiment, and FIG. 3 is an explanatory diagram showing another control method of this embodiment. It is a diagram. In this embodiment, four magnetic heads are arranged at equal angles.

図において、１は磁気ディスクで、２〜５が磁気ヘッド
で、記録・再生を行なう。In the figure, 1 is a magnetic disk, and 2 to 5 are magnetic heads, which perform recording and reproduction.

次に第１図に示した、実施例のディスクユニットの制御
方法を第２図を参照して説明する。Next, a method of controlling the disk unit of the embodiment shown in FIG. 1 will be explained with reference to FIG. 2.

２′〜５′は、磁気ヘッド２〜５とその駆動回路、６〜
９はそれぞれの制御ロジックで、各磁気ヘッド２〜５を
すべて独立に個々に制御する場合である。2' to 5' are magnetic heads 2 to 5 and their drive circuits; 6 to 5';
Reference numeral 9 denotes a control logic for controlling each of the magnetic heads 2 to 5 independently and individually.

また、第３図に示すように、１つの制御ロジックｌＯを
用い、ヘッド選択回路１１を付加して、磁気ディスクｌ
の記録または再生面金分割して、各エリア（トラック）
ごとに磁気ヘッド２〜５を割当て、ヘッド選択回路１１
で磁気ヘッドを選択して記録または再生を行なう。Further, as shown in FIG. 3, one control logic lO is used, a head selection circuit 11 is added, and a magnetic disk lO is used.
Record or playback surface divided into each area (track)
The head selection circuit 11 allocates magnetic heads 2 to 5 to each
Select the magnetic head and perform recording or playback.

第４図は、同一アーム上に、２個の磁気ヘッド１２．１
３を装着した場合である。Figure 4 shows two magnetic heads 12.1 on the same arm.
3 is installed.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明では、情報を記録・再生す
る磁気ディスクの記録面に、１記録面当りに複数個の磁
気ヘッドを備えたので、記録と再生が同時にでき、また
シーク時間が短くできるとともに、磁気ディスクの記録
容Ｍ−を増大させても、最大シーク時１１が増大しない
という優れた効果がある。As explained above, in the present invention, since the recording surface of the magnetic disk for recording and reproducing information is provided with a plurality of magnetic heads per recording surface, recording and reproducing can be performed simultaneously, and the seek time is short. In addition, there is an excellent effect that the maximum seek time 11 does not increase even if the recording capacity M- of the magnetic disk is increased.

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

第１図は本発明の一実施例のディスクユニットの概略構
成図、第２図は上記実施例の制御方法を示す概略説明図
、第３図は別の制御方法を示す概略説明図、第４図は本
発明の別の実施例のディスクユニットの概略構成図であ
る。 ｌ・・・磁気ディスク、 ２〜５，１２．１３・・・磁気ヘッド、６〜９・・・制
御ロジック １０・・・制御ロジック １１・・・ヘッド選択回路。FIG. 1 is a schematic configuration diagram of a disk unit according to an embodiment of the present invention, FIG. 2 is a schematic explanatory diagram showing a control method of the above embodiment, FIG. 3 is a schematic explanatory diagram showing another control method, and FIG. The figure is a schematic configuration diagram of a disk unit according to another embodiment of the present invention. l...Magnetic disk, 2-5, 12.13...Magnetic head, 6-9...Control logic 10...Control logic 11...Head selection circuit.

Claims (1)

【特許請求の範囲】[Claims] 磁気ディスクの１記録面あたりに複数個の磁気ヘッドを
備えたことを特徴とするディスクユニット。A disk unit characterized by having a plurality of magnetic heads per recording surface of a magnetic disk.
JP28331288A 1988-11-08 1988-11-08 Disk unit Pending JPH02128301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28331288A JPH02128301A (en) 1988-11-08 1988-11-08 Disk unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28331288A JPH02128301A (en) 1988-11-08 1988-11-08 Disk unit

Publications (1)

Publication Number Publication Date
JPH02128301A true JPH02128301A (en) 1990-05-16

Family

ID=17663829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28331288A Pending JPH02128301A (en) 1988-11-08 1988-11-08 Disk unit

Country Status (1)

Country Link
JP (1) JPH02128301A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018804A1 (en) * 1999-09-09 2001-03-15 Ohly D Christopher Disk drive with multiple heads for reduced track access time

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018804A1 (en) * 1999-09-09 2001-03-15 Ohly D Christopher Disk drive with multiple heads for reduced track access time

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