JPS62171053U - - Google Patents

Info

Publication number
JPS62171053U
JPS62171053U JP1986059259U JP5925986U JPS62171053U JP S62171053 U JPS62171053 U JP S62171053U JP 1986059259 U JP1986059259 U JP 1986059259U JP 5925986 U JP5925986 U JP 5925986U JP S62171053 U JPS62171053 U JP S62171053U
Authority
JP
Japan
Prior art keywords
track
head
signal
trace
control signal
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
JP1986059259U
Other languages
English (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 JP1986059259U priority Critical patent/JPS62171053U/ja
Priority to US07/035,534 priority patent/US4862294A/en
Priority to DE19873713121 priority patent/DE3713121A1/de
Priority to KR1019870003742A priority patent/KR930006126B1/ko
Publication of JPS62171053U publication Critical patent/JPS62171053U/ja
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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S358/00—Facsimile and static presentation processing
    • Y10S358/906—Hand-held camera with recorder in a single unit

Description

【図面の簡単な説明】
第１図ないし第３図はこの考案のデイスク消去
装置の実施例を示し、第１図、第２図は実施例１
のブロツク図、トラツクパターン図、第３図は実
施例２のブロツク図である。 １……磁気ヘツド、２……再生消去切換スイツ
チ、３……消去回路、４……再生回路、５……デ
イザ方式トラツキングサーボ回路、６，７……第
１、第２トラツキング切換スイツチ、８……サン
プルホールド回路、９……サンプリングスイツチ
、１０……発振回路、１１……加算回路、１３…
…駆動回路、１４……電気―機械変換器、１６…
…制御回路、１７……ビーク検出およびホールド
回路、１８……リミツタ、１９……発振器。

Claims (1)

    【実用新案登録請求の範囲】
  1. デイスクに同心円状に形成されたトラツクそれ
    ぞれの記録を、少なくとも再生と消去とに兼用さ
    れるヘツドによつて消去するデイスクの消去装置
    において、前記ヘツドの再生信号にもとづき前記
    ヘツドのトレースと再生中のトラツクとの位置ず
    れに追従して振幅変化するトラツキング制御信号
    を出力するトラツキングサーボ手段と、前記制御
    信号の駆動により前記ヘツドを前記デイスクの半
    径方向に移動し、前記ヘツドのトレース位置を可
    動制御するヘツド可動手段と、消去動作前に消去
    するトラツクの再生動作に設定し、該設定にもと
    づく前記制御信号のトラツキング制御により前記
    ヘツドのトレース位置が前記消去するトラツクの
    オントラツク位置に制御された後に再生動作から
    消去動作に切換える動作制御手段と、前記ヘツド
    のトレース位置が前記オントラツク位置に制御さ
    れたときの前記制御信号の平均値の直流信号を保
    持する信号保持手段と、前記ヘツドのトレース位
    置を前記オントラツク位置から最大トラツクずれ
    量のトレース位置まで可変する振幅の交流信号を
    発生する交流発生手段と、消去動作の設定時に前
    記制御信号の代わりに前記直流信号と前記変流信
    号との合成信号を前記可動手段に供給する可動制
    御手段とを備えたデイスクの消去装置。
JP1986059259U 1986-04-19 1986-04-19 Pending JPS62171053U (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1986059259U JPS62171053U (ja) 1986-04-19 1986-04-19
US07/035,534 US4862294A (en) 1986-04-19 1987-04-07 Disc erasing apparatus for selective erasure of disc tracks
DE19873713121 DE3713121A1 (de) 1986-04-19 1987-04-16 Plattenloeschvorrichtung
KR1019870003742A KR930006126B1 (ko) 1986-04-19 1987-04-18 디스크 소거장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986059259U JPS62171053U (ja) 1986-04-19 1986-04-19

Publications (1)

Publication Number Publication Date
JPS62171053U true JPS62171053U (ja) 1987-10-30

Family

ID=13108198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986059259U Pending JPS62171053U (ja) 1986-04-19 1986-04-19

Country Status (4)

Country Link
US (1) US4862294A (ja)
JP (1) JPS62171053U (ja)
KR (1) KR930006126B1 (ja)
DE (1) DE3713121A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637386A1 (fr) * 1988-10-04 1990-04-06 Asahi Optical Co Ltd Dispositif de changement de mode pour appareil photographique
US5777813A (en) * 1994-03-11 1998-07-07 Syquest Technology, Inc. Method and apparatus for reducing sideband interference when storing or retrieving data in a disk drive system adapted for downward compatibilty
JP3234845B2 (ja) * 1994-04-28 2001-12-04 キヤノン株式会社 カメラ
US5654842A (en) * 1994-08-30 1997-08-05 Sony Corporation Head displacement measuring method and apparatus and data recording/reproducing method and apparatus
US6469862B2 (en) * 1999-03-02 2002-10-22 Guzik Technical Enterprises Method and apparatus for improved servo signal filtering in read channels
US20090190255A1 (en) * 2008-01-24 2009-07-30 Samsung Electronics Co., Ltd. Method and for wide track erasure in a hard disk drive

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187903A (ja) * 1984-03-07 1985-09-25 Matsushita Electric Ind Co Ltd 電子スチルカメラ装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000510A (en) * 1975-06-02 1976-12-28 Ampex Corporation System for storage and retrieval of video information on a cyclical storage device
JPS5359406A (en) * 1976-11-09 1978-05-29 Sony Corp Magnetism erasing device
US4115818A (en) * 1977-01-12 1978-09-19 Compagnie Internationale Pour L'informatique Cii Honeywell Bull Apparatus for monitoring evolutive information
JPS5616946A (en) * 1979-07-18 1981-02-18 Matsushita Electric Ind Co Ltd Signal recording unit to information recording medium
JPS58218005A (ja) * 1982-06-10 1983-12-19 Fuji Photo Film Co Ltd 電子スチルカメラの音声記録装置
JPS592240A (ja) * 1982-06-25 1984-01-07 Pioneer Electronic Corp トラツキングサ−ボ装置
JPS5952404A (ja) * 1982-09-17 1984-03-27 Canon Inc 記録又は再生装置
US4717975A (en) * 1984-02-14 1988-01-05 Canon Kabushiki Kaisha Erasing device
US4745588A (en) * 1985-04-16 1988-05-17 Olympus Optical Co., Ltd. Tracking control apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187903A (ja) * 1984-03-07 1985-09-25 Matsushita Electric Ind Co Ltd 電子スチルカメラ装置

Also Published As

Publication number Publication date
DE3713121A1 (de) 1987-10-22
US4862294A (en) 1989-08-29
KR870010527A (ko) 1987-11-30
KR930006126B1 (ko) 1993-07-07

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