JPH03147583A - Information recording/reproducing device - Google Patents
Information recording/reproducing deviceInfo
- Publication number
- JPH03147583A JPH03147583A JP28492989A JP28492989A JPH03147583A JP H03147583 A JPH03147583 A JP H03147583A JP 28492989 A JP28492989 A JP 28492989A JP 28492989 A JP28492989 A JP 28492989A JP H03147583 A JPH03147583 A JP H03147583A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- sectors
- replacement
- counting
- error
- 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
Links
- 238000004140 cleaning Methods 0.000 abstract description 16
- 238000011109 contamination Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、光磁気ディスクなどの記録媒体に情報を記録
、再生する情報記録再生装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information recording/reproducing apparatus for recording and reproducing information on a recording medium such as a magneto-optical disk.
［従来の技術］
従来、光磁気ディスクなどの情報記録媒体あるいはその
記録再生装置は、寿命が半永久的であり、非常に長時間
に亘って使用される。そのため、情報記録媒体の表面あ
るいは記録ヘッドの表面にチリやホコリが徐々に付着し
、例えば記録媒体の再生不能な箇所が増えるなどの問題
が生じる。このような場合、−８にはＥＣＣ回路の誤り
訂正処理によってチリやホコリの付着場所がエラーにな
るとは限らないが、その誤り訂正処理に時間を要し、再
生時間が長くなってしまう、そこで、光磁気ディスクや
記録ヘッド専用のクリーナが提案され、このクリーナを
装置に組み込んでディスクや記録ヘッドの表面をクリー
ニングすることが行われている。[Prior Art] Conventionally, information recording media such as magneto-optical disks or recording/reproducing devices thereof have a semi-permanent lifespan and are used for a very long time. Therefore, dirt and dust gradually adhere to the surface of the information recording medium or the surface of the recording head, resulting in problems such as an increase in the number of unplayable areas on the recording medium. In such a case, the -8 error correction process of the ECC circuit will not necessarily cause an error in the place where dirt or dust has adhered, but the error correction process will take time and the playback time will become longer. A cleaner dedicated to magneto-optical disks and recording heads has been proposed, and this cleaner has been incorporated into devices to clean the surfaces of disks and recording heads.
［発明が解決しようとしている課題］
しかしながら、このようなりリーテによるクリーニング
は、ユーザの判断によって行われるため、定期的な記録
媒体、記録へ・ラドの清掃はとても期待できない、その
ため、記録媒体、記録ヘツドを長時間清掃しないでいる
と、やはり前述のようにチリやホコリの影響によって再
生時間が長（なる問題があった
本発明は、このような事情に鑑みなされたもので、その
目的は記録媒体の表面の汚れを間接的に検知することに
よって、記録媒体のクリーニングを自動的に行うように
した情報記録再生装置を提供することにある。[Problems to be Solved by the Invention] However, since cleaning with such a rete is performed at the discretion of the user, it is difficult to expect regular cleaning of recording media and recording media. If the head is not cleaned for a long time, the playback time will become longer due to the influence of dirt and dust as mentioned above.The present invention was created in view of these circumstances, and its purpose is to An object of the present invention is to provide an information recording/reproducing device that automatically cleans a recording medium by indirectly detecting dirt on the surface of the medium.
［課題を解決するための手段］
上記目的を達成するため、記録媒体のエラーのセクタを
計数する計数手段と、この計数手段によって計数された
現在のエラーセクタ数とこの計数手段によって計数され
た前記記録媒体に記録された前のエラーセクタ数から交
替セクタの増加分を演算する演算手段と、この演算手段
によって演算された値と予め設定された許容エラーセク
タ数とを比較し、現在のエラーセクタ数が許容エラーセ
クタ数に達したときに前記記録媒体をクリーニングする
ための指令信号を出力する比較手段とを有することを特
徴とする情報記録再生装置が提供される。[Means for Solving the Problem] In order to achieve the above object, there is provided a counting means for counting error sectors of a recording medium, the current number of error sectors counted by this counting means, and the number of error sectors counted by this counting means. A calculation means for calculating the increase in replacement sectors from the previous number of error sectors recorded on the recording medium, and a value calculated by this calculation means is compared with a preset allowable number of error sectors, and the current error sector is calculated. There is provided an information recording and reproducing apparatus characterized in that it has a comparing means for outputting a command signal for cleaning the recording medium when the number reaches a permissible number of error sectors.
［作用］
本発明では、記録媒体の前のエラーセクタ数を計数手段
で計数して記録媒体に記録しておく０次に、計数手段に
よって現在のエラーセクタ数を計数し、この計数値と前
の計数値との差を演算手段で演算する。この演算結果は
比較手段へ送られ、ここで演算結果は予め設定された許
容エラーセクタ数と比較される。この結果、演算値が許
容エラーセクタ数に達したときに、記録媒体をクリーニ
ングするための信号が出力される。[Operation] In the present invention, the number of error sectors before the recording medium is counted by the counting means and recorded on the recording medium.Next, the current number of error sectors is counted by the counting means, and this counted value is compared with the previous number. A calculation means calculates the difference between the count value and the count value of . The result of this calculation is sent to a comparison means, where it is compared with a preset number of allowable error sectors. As a result, when the calculated value reaches the allowable number of error sectors, a signal for cleaning the recording medium is output.
［実施例］
以下、本発明の実施例を図面を参照して詳細に説明する
。第１図は、本発明の情報記録再生装置の一実施例を示
すブロック図である。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the information recording/reproducing apparatus of the present invention.
第１図において、■は光ディスクなどの記録媒体であっ
て、その記録域は複数のセクタに区分され、セクタ単位
で情報の記録再生が行われる。また、セクタに不良があ
った場合は、不良セクタの情報を予め用意された代替セ
クタに書き込む交替処理が行われる。計数部２は、その
不良セクタが発生した場合に１代替セクタに交替したセ
クタを計数するカウンタである。この計数部２は、まず
初期の記録媒体ｌの交替セクタの数を計数し、その計数
値を記録媒体ｌの所定の記録域に書き込んでおく処理を
行う、また、計数部２は現在の交替セクタの数を計数し
、計数結果を演算部３へ出力することも行う。In FIG. 1, ``■'' is a recording medium such as an optical disk, the recording area of which is divided into a plurality of sectors, and information is recorded and reproduced in sector units. Furthermore, if there is a defect in the sector, a replacement process is performed in which information about the defective sector is written to a previously prepared alternative sector. The counting unit 2 is a counter that counts the number of sectors replaced by one alternative sector when a defective sector occurs. This counting unit 2 first counts the number of replacement sectors of the initial recording medium l, and performs a process of writing the counted value in a predetermined recording area of the recording medium l. It also counts the number of sectors and outputs the counting results to the calculation unit 3.
演算部３は、先に初期の記録媒体ｌの交替セクタ数とし
て、記録媒体ｌの所定記録域に書き込んであった初期交
替セクタ数を、計数部２から送られた現在の交替セクタ
数との差を演算する演算回路である。比較部４は、演算
部３から送られた演算結果と、設定部５に予め設定され
た許容エラーセクタ数とを比較する比較回路である。こ
の比較部４で両者を比較した結果、演算値が許容エラー
セクタ数に達した場合、比較部４から記録媒体ｌをクリ
ーニングするよう指令するクリーニング指令信号が出力
される。即ち、演算結果は初期の交替セクタ数と現在の
交替セクタ数の差であり、交替セクタの増加分である。The calculation unit 3 compares the initial number of replacement sectors previously written in a predetermined recording area of the recording medium 1 with the current number of replacement sectors sent from the counting unit 2 as the number of replacement sectors of the initial recording medium 1. This is a calculation circuit that calculates the difference. The comparison unit 4 is a comparison circuit that compares the calculation result sent from the calculation unit 3 and the number of allowable error sectors set in advance in the setting unit 5. As a result of comparing the two in the comparison section 4, if the calculated value reaches the allowable number of error sectors, the comparison section 4 outputs a cleaning command signal instructing to clean the recording medium l. That is, the calculation result is the difference between the initial number of replacement sectors and the current number of replacement sectors, and is the increase in the number of replacement sectors.
従って、この増加分によって、間接的に記録媒体ｌの汚
れを検知し、許容値以上に前記増加分が達したときに、
クリーニングを行うための信号を出力するというもので
ある。Therefore, dirt on the recording medium l is indirectly detected based on this increased amount, and when the increased amount reaches the allowable value or more,
It outputs a signal for cleaning.
次に、記録媒体１は、第２図（ａｔに示すように、円盤
状の形状よりなっている。この円盤状の記録媒体ｌは、
情報記録再生装置本体に装着されてフォーマットが行わ
れる。この際、情報記録再生装置は記録媒体ｌを、第２
図 ｆｂｌに示すように、情報記録エリア６、交替エリ
ア７、ディスク情報記録エリア８の３つに分け、後述す
るように３つの領域のアドレスチエツクを行う。Next, the recording medium 1 has a disk-like shape as shown in FIG.
It is attached to the main body of the information recording/reproducing device and formatted. At this time, the information recording/reproducing device transfers the recording medium l to the second
As shown in FIG.
本実施例の情報記録再生装置では、まず初期的に記録媒
体１の情報記録エリア６、交替エリア７、ディスク情報
記録エリア８のアドレスをチエツクし、アドレスを正し
く読めなかったセクタについては、そのアドレスとその
個数ｍを記録媒体１のディスク情報記録エリア８に記録
しておく。In the information recording and reproducing apparatus of this embodiment, the addresses of the information recording area 6, spare area 7, and disc information recording area 8 of the recording medium 1 are initially checked, and for sectors whose addresses cannot be read correctly, the addresses are checked. and the number m thereof are recorded in the disc information recording area 8 of the recording medium 1.
この処理を第３図に示すフローチャートを参照して説明
すると、まずＳ（ステップ）ｌでディスクのフォーマッ
トを開始し、前述のようにアドレスのチエツクを行う、
ここで、アドレスを読めなかったセクタについて、Ｓ２
でそのセクタを未使用とし、他の代替セクタと交替する
処理を行う。This process will be explained with reference to the flowchart shown in FIG. 3. First, formatting of the disk is started in S (step) l, and the address is checked as described above.
Here, for the sector whose address could not be read, S2
, the sector is made unused and replaced with another alternative sector.
次いで、Ｓ３で交替セクタ数を計数部２によって計数し
、その計数値ｍをディスク情報記録エリア８に書き込む
処理を行って初期の処理が終了する。Next, in S3, the number of replacement sectors is counted by the counting section 2, and the counted value m is written in the disc information recording area 8, and the initial processing is completed.
次に、記録媒体１に情報を記録する場合、情報記録再生
装置は、まず記録するアドレスが正しいかどうかチエツ
クする。この情報記録時の処理について第４図を参照し
て説明すると、前述のように、Ｓｌでアドレスをチエツ
クし、Ｓ２でそのアドレスが正しく読めるかどうかを判
定する。ここで、アドレスが正しく読めた場合は、Ｓ３
でそのアドレスに該当する情報を書き込む処理を行う。Next, when recording information on the recording medium 1, the information recording/reproducing apparatus first checks whether the recording address is correct. The process for recording this information will be explained with reference to FIG. 4. As mentioned above, the address is checked in S1, and it is determined in S2 whether the address can be read correctly. Here, if the address is read correctly, S3
performs the process of writing the information corresponding to that address.
一方、アドレスが正しく読めなかった場合は、Ｓ４で代
替セクタに該当する情報を書き込む交替セクタ処理を行
い、かつそのアドレスをディスク情報記録エリア６に書
き込む処理を行う、この後、Ｓ５で交替セクタ処理を行
った交替セクタの数を再度計数部２によって計数し、こ
こで得られた現在の交替セクタ数ｎを前に書き込んだ初
期交替セクタ数ｍと書き替える処理を行う。On the other hand, if the address cannot be read correctly, a replacement sector process is performed in which information corresponding to the replacement sector is written in the replacement sector, and the address is also written in the disc information recording area 6. After this, replacement sector processing is performed in S5. The number of replacement sectors that have been replaced is counted again by the counting unit 2, and the current number n of replacement sectors obtained here is rewritten with the previously written initial number m of replacement sectors.
この現在の交替セクタ数の計数処理を行った後、第５図
に示すように前の交替セクタ数と現在の交替セクタ数と
の比較処理を行う、以下、その動作について説明する。After the current number of replacement sectors is counted, the previous number of replacement sectors and the current number of replacement sectors are compared as shown in FIG. 5. The operation will be described below.
まず、Ｓｌで前に記録媒体ｌに書き込んだ初期の交替セ
クタ数ｍを読み出し、Ｓ２で現在の交替セクタ数ｎを取
り込む処理を行う０次に、Ｓ３で前の交替セクタ数ｍと
現在の交替セクタ数ｎとの差を演算部３で演算する処理
を行い、この後比較部４でここで得られた両者の差ｙ（
ｎ−ｍ）と予め設定部５に設定された設定値ａと比較す
る処理を行う、ここで、ｙ＝ｎ−ｍ＞ａの関係が成り立
った場合、交替セクタの増加分が許容セクタ数である設
定値ａに達しているため、記録媒体ｌの表面のチリやホ
コリによる汚れが許容値に達したものと判断する。従っ
て、このときはＳ４で記録媒体ｌの表面をクリーニング
するよう指令信号が出力される。一方、Ｓ３でｙ＝ｎ−
ｍ＜ａの関係が成り立った場合は、記録媒体ｌの表面の
汚れが許容値に達していないものと判断し、このときは
Ｓ５で通常動作を行う。First, in S1, the initial number m of replacement sectors previously written to the recording medium l is read, and in S2, the current number n of replacement sectors is read.Next, in S3, the previous number m of replacement sectors and the current number of replacement sectors are read. The calculation unit 3 calculates the difference between the number of sectors n, and then the comparison unit 4 calculates the difference y(
If the relationship y=n-m>a holds true, then the increase in replacement sectors is equal to the allowable number of sectors. Since a certain set value a has been reached, it is determined that the dirt and dust stains on the surface of the recording medium l have reached the permissible value. Therefore, at this time, a command signal is outputted in S4 to clean the surface of the recording medium l. On the other hand, in S3 y=n−
If the relationship m<a holds true, it is determined that the dirt on the surface of the recording medium l has not reached the allowable value, and in this case, normal operation is performed in S5.
このように本発明では、初期に交替セクタ数を計数して
記録させ、この値と現在の交替セクタ数との差を演算す
ることによって、交替セクタの増加分を算出する。記録
媒体が汚れた場合、交替セクタも増加するため、汚れの
度合は交替セクタ数と比例関係にある。そのため、前述
のように初期と現在の交替セクタ数の差をとることによ
って、記録媒体の汚れの増加量を間接的に検出する。そ
して、得られた交替セクタの増加分と予め設定した許容
セクタ数を比較し、前記交替セクタ数の増加分が許容セ
クタ数に達した場合に、記録媒体をクリーニングする指
令信号を出力する。従って、記録媒体が汚れてきた場合
、ある設定量の汚れに達すると、クリーニング指令信号
が出力される。As described above, in the present invention, the number of replacement sectors is initially counted and recorded, and the difference between this value and the current number of replacement sectors is calculated to calculate the increase in the number of replacement sectors. When the recording medium becomes dirty, the number of replacement sectors increases, so the degree of dirt is proportional to the number of replacement sectors. Therefore, as described above, by calculating the difference between the initial and current number of replacement sectors, the amount of increase in dirt on the recording medium is indirectly detected. Then, the obtained increase in the number of replacement sectors is compared with a preset allowable number of sectors, and when the increase in the number of replacement sectors reaches the number of allowable sectors, a command signal for cleaning the recording medium is output. Therefore, when the recording medium becomes dirty, a cleaning command signal is output when a certain set amount of dirt is reached.
また、現在の交替セクタ数を計数した場合、前述のよう
に前に書き込んだ交替セクタ数を現在の数に書き替える
処理を行う、従って、次に交替セクタ数を計数した場合
は、その書き替えた数値との差を演算し、前の交替セク
タ数からの増加分を算出する。In addition, when the current number of replacement sectors is counted, the previously written number of replacement sectors is rewritten to the current number as described above. Therefore, when the number of replacement sectors is counted next, the rewriting is performed. The difference between the number of replacement sectors and the number of replacement sectors is calculated, and the increase from the previous number of replacement sectors is calculated.
なお実施例では、記録媒体を情報記録エリア。In the embodiment, the recording medium is an information recording area.
交替エリア、ディスク情報記録エリアの３つに分けてい
るが、本発明はこの３つのエリアを１つのゾーンとし、
記録媒体に複数のゾーンを形成する方式にも有効に利用
できる。また、交替セクタの差を演算することによって
、交替セクタの増加分を算出したが、これに限ることな
く１例えば比をとるようにしてもよい、更に、現在の交
替セクタ数の計数を記録媒体の記録時としたが、これに
限ることなく、記録媒体を装置本体に装着した直後、記
録の直前、直後、あるいは再生の直前、直後などであっ
てもよい。Although it is divided into three areas: a replacement area and a disc information recording area, the present invention treats these three areas as one zone,
It can also be effectively used in a method of forming a plurality of zones on a recording medium. Further, although the increase in replacement sectors is calculated by calculating the difference between replacement sectors, the present invention is not limited to this, and it is also possible to take a ratio of 1, for example. However, the present invention is not limited to this, and may be performed immediately after the recording medium is loaded into the apparatus main body, immediately before or after recording, or immediately before or after reproduction.
また本発明は、クリーニングを行うための時期を検知し
知らせるためのものであり、実際のクリーニングは、ユ
ーザがクリーニングキットを用いて行う場合や、情報記
録再生装置自体にクリーニング機構を有している場合に
は、装置自体が行う場合のどちらにも有効である。Further, the present invention is for detecting and notifying the timing for cleaning, and the actual cleaning may be performed by the user using a cleaning kit, or the information recording and reproducing device itself has a cleaning mechanism. In some cases, it is effective in both cases where the device itself performs the process.
［発明の効果］
以上説明したように本発明によれば、交替セクタの数に
よって記録媒体の表面の汚れを間接的に検出し、この汚
れが予め設定した許容量に達したときに記録媒体をクリ
ーニングする指令を出力するようにしたので、従来のよ
うな記録媒体を長時間クリーニングしないでいると、次
第にチリやホコリによって汚れてくるという問題点を解
消でき、確実に記録媒体をクリーニングすることができ
る。[Effects of the Invention] As explained above, according to the present invention, dirt on the surface of a recording medium is indirectly detected based on the number of replacement sectors, and when this dirt reaches a preset tolerance, the recording medium is removed. Since the cleaning command is now output, the conventional problem of recording media becoming dirty with dirt and dust if left uncleaned for a long time can be solved, and the recording media can be cleaned reliably. can.
第１図は本発明の情報記録再生装置の一実施例を示すブ
ロック図、第２図（ａ）は記録媒体の平面図、第２図（
ｂ）はその記録媒体の記録域の構成を示す説明図、第３
図は前記実施例の初期の交替セクタ数の計数処理動作を
示すフローチャート、第４図は現在の交替セクタ数の計
数処理動作を示すフローチャート、第５図は初期と現在
の交替セクタ数の減算処理及びこの減算によって得られ
た値と許容セクタ数との比較処理動作を示すフローチャ
ートである。
１・・・記録媒体 ２・・・計数部３・・・演
算部 ４・・・比較部５・・・設定部FIG. 1 is a block diagram showing an embodiment of the information recording/reproducing apparatus of the present invention, FIG. 2(a) is a plan view of a recording medium, and FIG.
b) is an explanatory diagram showing the configuration of the recording area of the recording medium;
FIG. 4 is a flowchart showing the operation for counting the initial number of replacement sectors in the embodiment, FIG. 4 is a flowchart showing the operation for counting the current number of replacement sectors, and FIG. 5 is a process for subtracting the initial and current number of replacement sectors. It is a flowchart showing a comparison processing operation between the value obtained by this subtraction and the allowable number of sectors. 1... Recording medium 2... Counting section 3... Calculating section 4... Comparing section 5... Setting section
Claims (1)
計数手段によって計数された現在のエラーセクタ数とこ
の計数手段によって計数された前記記録媒体に記録され
た前のエラーセクタ数から交替セクタの増加分を演算す
る演算手段と、この演算手段により演算された値と予め
設定された許容エラーセクタ数とを比較し、現在のエラ
ーセクタ数が許容エラーセクタ数に達したときに前記記
録媒体をクリーニングするための指令信号を出力する比
較手段とを有することを特徴とする情報記録再生装置。A counting means for counting error sectors of a recording medium, a current number of error sectors counted by this counting means, and an increase in replacement sectors from the previous number of error sectors recorded on the recording medium counted by this counting means. A calculation means for calculating the number of error sectors, and a value calculated by this calculation means is compared with a preset allowable number of error sectors, and when the current number of error sectors reaches the allowable number of error sectors, the recording medium is cleaned. 1. An information recording and reproducing apparatus comprising: a comparison means for outputting a command signal for
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28492989A JP2716547B2 (en) | 1989-11-02 | 1989-11-02 | Information recording / reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28492989A JP2716547B2 (en) | 1989-11-02 | 1989-11-02 | Information recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03147583A true JPH03147583A (en) | 1991-06-24 |
| JP2716547B2 JP2716547B2 (en) | 1998-02-18 |
Family
ID=17684887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28492989A Expired - Fee Related JP2716547B2 (en) | 1989-11-02 | 1989-11-02 | Information recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2716547B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0612809A (en) * | 1992-03-25 | 1994-01-21 | Internatl Business Mach Corp <Ibm> | Data storage apparatus and cleaning method for disk surface |
| US5471451A (en) * | 1992-08-27 | 1995-11-28 | Fujitsu Limited | Disk apparatus including notifying of cleaning timing and control method thereof |
| US6411083B1 (en) | 1998-11-10 | 2002-06-25 | Nec Corporation | Apparatus for effectively detecting foreign particles adhered to magnetic head |
-
1989
- 1989-11-02 JP JP28492989A patent/JP2716547B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0612809A (en) * | 1992-03-25 | 1994-01-21 | Internatl Business Mach Corp <Ibm> | Data storage apparatus and cleaning method for disk surface |
| JPH097346A (en) * | 1992-03-25 | 1997-01-10 | Internatl Business Mach Corp <Ibm> | Data storage device and cleaning method of disk face |
| US5471451A (en) * | 1992-08-27 | 1995-11-28 | Fujitsu Limited | Disk apparatus including notifying of cleaning timing and control method thereof |
| US5633848A (en) * | 1992-08-27 | 1997-05-27 | Fujitsu Limited | Method and apparatus for cleaning an optical disk head on the basis of time accumulation |
| US6411083B1 (en) | 1998-11-10 | 2002-06-25 | Nec Corporation | Apparatus for effectively detecting foreign particles adhered to magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2716547B2 (en) | 1998-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |