JPH0226102U - - Google Patents

Info

Publication number
JPH0226102U
JPH0226102U JP7033689U JP7033689U JPH0226102U JP H0226102 U JPH0226102 U JP H0226102U JP 7033689 U JP7033689 U JP 7033689U JP 7033689 U JP7033689 U JP 7033689U JP H0226102 U JPH0226102 U JP H0226102U
Authority
JP
Japan
Prior art keywords
recording
reproducing
frequency
perpendicular magnetization
track
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
JP7033689U
Other languages
Japanese (ja)
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 JP7033689U priority Critical patent/JPH0226102U/ja
Publication of JPH0226102U publication Critical patent/JPH0226102U/ja
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Description

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

第1図は垂直磁化記録再生の記録密度と出力の
関係の図、第2図、第3図は本考案の一実施例と
しての回路図。
FIG. 1 is a diagram showing the relationship between recording density and output in perpendicular magnetization recording and reproduction, and FIGS. 2 and 3 are circuit diagrams as an embodiment of the present invention.

補正 平1.7.14 考案の名称を次のように補正する。 考案の名称 記録再生装置 実用新案登録請求の範囲を次のように補正する
Amendment 1.7.14 Hei 1. The name of the invention is amended as follows. Title of the device: Recording/reproducing device The scope of the claim for utility model registration is amended as follows.

【実用新案登録請求の範囲】 トラツク情報信号にもとづいて分周比が設定さ
れる可変分周器と、該可変分周器の出力信号に応
じて出力信号周波数を変化させるVOC回路から
なるPLL回路、該VOC回路の出力信号を記録
再生周波数信号として用いる記録再生周波数信号
発生手段を有し、 前記記録再生周波数信号発生手段は、1つのヘ
ツドでデイスク型の回転記録媒体の所定の径方向
領域に記録再生を行なう際に、前記トラツク情報
に応じて外側トラツクの記録再生周波数を内側ト
ラツクの記録再生周波数より大きくするよう設定
され、且つ前記記録再生周波数は各トラツクの記
録密度がほぼ一定でしかも記録密度特性曲線のお
いて再生出力電圧の劣化特性部を避けた値になる
よう設定されてなることを特徴とする記録再生装
置。
[Claims for Utility Model Registration] A PLL circuit consisting of a variable frequency divider whose frequency division ratio is set based on a track information signal, and a VOC circuit that changes the output signal frequency according to the output signal of the variable frequency divider. , a recording/reproducing frequency signal generating means that uses the output signal of the VOC circuit as a recording/reproducing frequency signal, and the recording/reproducing frequency signal generating means generates a signal in a predetermined radial direction area of a disk-type rotating recording medium with one head. When recording and reproducing, the recording and reproducing frequency of the outer track is set to be higher than the recording and reproducing frequency of the inner track according to the track information, and the recording and reproducing frequency is set so that the recording density of each track is approximately constant and the recording and reproducing frequency is set to be higher than that of the inner track. A recording/reproducing device characterized in that a density characteristic curve is set to a value that avoids a deterioration characteristic portion of a reproduction output voltage.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] デスク型の回転する記録媒体に乗直磁化記録再
生を行なう際に、外側トラツクと内側トラツクで
記録再生の周波数を変えることにより、記録密度
を高めることを特徴とする垂直磁化記録再生方式
A perpendicular magnetization recording and reproducing method that is characterized by increasing the recording density by changing the recording and reproducing frequency between outer tracks and inner tracks when performing perpendicular magnetization recording and reproducing on a disk-shaped rotating recording medium.
JP7033689U 1989-06-15 1989-06-15 Pending JPH0226102U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7033689U JPH0226102U (en) 1989-06-15 1989-06-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7033689U JPH0226102U (en) 1989-06-15 1989-06-15

Publications (1)

Publication Number Publication Date
JPH0226102U true JPH0226102U (en) 1990-02-21

Family

ID=31295585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7033689U Pending JPH0226102U (en) 1989-06-15 1989-06-15

Country Status (1)

Country Link
JP (1) JPH0226102U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369014A (en) * 1976-12-01 1978-06-20 Toshiba Corp Magnetic memory system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369014A (en) * 1976-12-01 1978-06-20 Toshiba Corp Magnetic memory system

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