JPH0371464U - - Google Patents

Info

Publication number
JPH0371464U
JPH0371464U JP13204589U JP13204589U JPH0371464U JP H0371464 U JPH0371464 U JP H0371464U JP 13204589 U JP13204589 U JP 13204589U JP 13204589 U JP13204589 U JP 13204589U JP H0371464 U JPH0371464 U JP H0371464U
Authority
JP
Japan
Prior art keywords
magnetic head
optical disk
magneto
information
servo device
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.)
Granted
Application number
JP13204589U
Other languages
Japanese (ja)
Other versions
JPH0739097Y2 (en
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 filed Critical
Priority to JP13204589U priority Critical patent/JPH0739097Y2/en
Priority to EP94202599A priority patent/EP0635827B1/en
Priority to EP90309072A priority patent/EP0414456B1/en
Priority to DE69020662T priority patent/DE69020662T2/en
Priority to AU61101/90A priority patent/AU633345B2/en
Priority to DE69031136T priority patent/DE69031136T2/en
Priority to KR1019900012784A priority patent/KR100190798B1/en
Priority to US07/570,551 priority patent/US5095470A/en
Priority to CA002023698A priority patent/CA2023698C/en
Priority to MYPI90001420A priority patent/MY105924A/en
Publication of JPH0371464U publication Critical patent/JPH0371464U/ja
Priority to US07/772,348 priority patent/US5168483A/en
Application granted granted Critical
Publication of JPH0739097Y2 publication Critical patent/JPH0739097Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

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

第１図は本考案の一実施例をブロツク図、第２
図は浮遊容量の影響を示す説明図、第３図は先行
技術を示す磁気ヘツド制御装置のブロツク図、第
４図は磁気ヘツドの具体例を示す斜視図、第５図
発振回路の一実施例を示す回路図である。第６図
は電圧制御発振器の一例を示す回路図である。 図中、１……光磁気デイスク、２……磁気ヘツ
ド、３……光学ヘツド、４……コイル、６……容
量検出用電極、７……発振回路、８……ＰＬＬ型
位相検出回路、１４……位相補償回路、１５……
駆動回路、２１……Ｃ／Ｖ変換部、２２……デイ
スク情報検出部、２３……Ｄ／Ｖ変換部を示す。 Figure 1 is a block diagram of an embodiment of the present invention;
Figure 3 is an explanatory diagram showing the influence of stray capacitance, Figure 3 is a block diagram of a magnetic head control device showing the prior art, Figure 4 is a perspective view showing a specific example of a magnetic head, Figure 5 is an example of an oscillation circuit. FIG. FIG. 6 is a circuit diagram showing an example of a voltage controlled oscillator. In the figure, 1... magneto-optical disk, 2... magnetic head, 3... optical head, 4... coil, 6... capacitance detection electrode, 7... oscillation circuit, 8... PLL type phase detection circuit, 14... Phase compensation circuit, 15...
A drive circuit, 21...C/V conversion unit, 22...disk information detection unit, 23...D/V conversion unit are shown.

Claims (1)

【実用新案登録請求の範囲】 (1) 光磁気デイスクに対向して配置されている
磁気ヘツドと前記磁気ヘツドと前記光磁気デイス
ク間の静電容量を検出する容量検出手段と、該容
量検出手段より得られる信号に基づいて前記磁気
ヘツドの位置と前記光デイスクの相対的な間隔を
制御するアクチユエータを備えている磁気ヘツド
サーボ装置において、前記磁気デイスクの外径情
報、又は及び前記光デイスクの記録面の面積情報
が前記アクチユエータに所定の偏位を与える信号
としてサーボ回路に供給されていることを特徴と
する光磁気記録装置における磁気ヘツドサーボ装
置。 (2) 光磁気デイスクの外径情報、又は磁気記録
面積情報が前記光デイスクの制御データとして記
録されていることを特徴とする実用新案登録請求
の範囲第(1)項に記載の光磁気記録装置における
磁気ヘツドサーボ装置。[Claims for Utility Model Registration] (1) A magnetic head disposed opposite to a magneto-optical disk, a capacitance detecting means for detecting capacitance between the magnetic head and the magneto-optical disk, and the capacitance detecting means. In the magnetic head servo device, the magnetic head servo device includes an actuator that controls the position of the magnetic head and the relative spacing between the optical disk based on a signal obtained from the outer diameter information of the magnetic disk, or the recording surface of the optical disk. A magnetic head servo device for a magneto-optical recording device, characterized in that area information of is supplied to a servo circuit as a signal for giving a predetermined deflection to the actuator. (2) The magneto-optical recording according to claim (1) of the utility model registration claim, wherein information on the outer diameter of the magneto-optical disk or information on the magnetic recording area is recorded as control data for the optical disk. Magnetic head servo device in equipment.
JP13204589U 1989-08-22 1989-11-15 Magnetic head servo device in magneto-optical recording device Expired - Fee Related JPH0739097Y2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP13204589U JPH0739097Y2 (en) 1989-11-15 1989-11-15 Magnetic head servo device in magneto-optical recording device
EP90309072A EP0414456B1 (en) 1989-08-22 1990-08-17 Magnetic head position control system
DE69020662T DE69020662T2 (en) 1989-08-22 1990-08-17 Magnetic head positioning control system.
AU61101/90A AU633345B2 (en) 1989-08-22 1990-08-17 Magnetic head position controlling apparatus
DE69031136T DE69031136T2 (en) 1989-08-22 1990-08-17 Device for regulating the position of a magnetic head
EP94202599A EP0635827B1 (en) 1989-08-22 1990-08-17 Magnetic head position control system
KR1019900012784A KR100190798B1 (en) 1989-08-22 1990-08-20 Magnetic head position control system
US07/570,551 US5095470A (en) 1989-08-22 1990-08-21 Capacitance detection control circuit for positioning a magnetic head close to a magneto-optical disk
CA002023698A CA2023698C (en) 1989-08-22 1990-08-21 Magnetic head position control apparatus
MYPI90001420A MY105924A (en) 1989-08-22 1990-08-22 Magnetic head position control system.
US07/772,348 US5168483A (en) 1989-08-22 1991-10-07 Magnetic head position control apparatus including drive means responsive to a summed signal from a capacitance detection electrode and a disk size detector means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13204589U JPH0739097Y2 (en) 1989-11-15 1989-11-15 Magnetic head servo device in magneto-optical recording device

Publications (2)

Publication Number Publication Date
JPH0371464U true JPH0371464U (en) 1991-07-19
JPH0739097Y2 JPH0739097Y2 (en) 1995-09-06

Family

ID=31679519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13204589U Expired - Fee Related JPH0739097Y2 (en) 1989-08-22 1989-11-15 Magnetic head servo device in magneto-optical recording device

Country Status (1)

Country Link
JP (1) JPH0739097Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200000839U (en) * 2018-10-17 2020-04-27 디앨 주식회사 External safety valve of gas bulk tank lorry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200000839U (en) * 2018-10-17 2020-04-27 디앨 주식회사 External safety valve of gas bulk tank lorry

Also Published As

Publication number Publication date
JPH0739097Y2 (en) 1995-09-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees