JPH04214267A - Rewriting type information recording medium - Google Patents
Rewriting type information recording mediumInfo
- Publication number
- JPH04214267A JPH04214267A JP40199190A JP40199190A JPH04214267A JP H04214267 A JPH04214267 A JP H04214267A JP 40199190 A JP40199190 A JP 40199190A JP 40199190 A JP40199190 A JP 40199190A JP H04214267 A JPH04214267 A JP H04214267A
- Authority
- JP
- Japan
- Prior art keywords
- utoc
- data
- recorded
- area
- region
- 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
Links
- 230000007547 defect Effects 0.000 abstract description 4
- 238000013523 data management Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、データの記録再生が可
能な書き換え型情報記録媒体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rewritable information recording medium on which data can be recorded and reproduced.
【０００２】0002
【従来の技術】あらかじめ規定された領域に、記録デー
タの管理情報であるＵＴＯＣデータを記録するＵＴＯＣ
領域を有する書き換え型情報記録媒体がある。ＵＴＯＣ
データは、記録された各トラック（曲）の開始時間（位
置）、トータルトラック数、記録データの終了時間（位
置）等の情報を有している。[Background Art] UTOC records UTOC data, which is management information of recorded data, in a predefined area.
There is a rewritable information recording medium that has an area. UTOC
The data includes information such as the start time (position) of each recorded track (song), the total number of tracks, and the end time (position) of recorded data.
【０００３】従来のＵＴＯＣ領域を有する書き換え型情
報記録媒体では、正規のＵＴＯＣ領域にＵＴＯＣデータ
が記録されているのみであり、傷等により正規のＵＴＯ
Ｃ領域に欠陥が発生すると、ＵＴＯＣデータの記録再生
ができなくなり、書き換え型情報記録媒体に記録されて
いるデータの管理が不可能となることがある。[0003] In conventional rewritable information recording media having a UTOC area, UTOC data is only recorded in the regular UTOC area, and due to scratches etc.
If a defect occurs in the C area, it may become impossible to record or reproduce UTOC data, and it may become impossible to manage data recorded on the rewritable information recording medium.
【０００４】0004
【発明が解決しようとする課題】本発明は、従来の書き
換え型情報記録媒体が有する問題点、即ちＵＴＯＣデー
タの記録再生ができなくなったとき、記録されているデ
ータの管理ができなくなる点を解決するものである。[Problems to be Solved by the Invention] The present invention solves the problem that conventional rewritable information recording media have, that is, when it becomes impossible to record and reproduce UTOC data, it becomes impossible to manage the recorded data. It is something to do.
【０００５】[0005]
【課題を解決するための手段】書き換え型情報記録媒体
において、正規のＵＴＯＣ領域以外に、予備のＵＴＯＣ
領域を記録領域の未記録（空き）領域に設ける構成とし
た。[Means for solving the problem] In a rewritable information recording medium, in addition to the regular UTOC area, there is a spare UTOC area.
The area is provided in an unrecorded (empty) area of the recording area.
【０００６】[0006]
【作用】書き換え型情報記録媒体の正規のＵＴＯＣ領域
と予備のＵＴＯＣ領域の両方にＵＴＯＣデータを記録す
ることにより、ＵＴＯＣデータの保存をより確率の高い
ものにする。[Operation] By recording UTOC data in both the regular UTOC area and the spare UTOC area of the rewritable information recording medium, the probability of saving UTOC data is increased.
【０００７】[0007]
【実施例】本発明による一実施例を図面に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
【０００８】図１は、本発明による書き換え型情報記録
媒体の記録フォーマットであり、図５に示す、従来のＵ
ＴＯＣ領域を有する書き換え型情報記録媒体の未記録（
空き）領域に予備のＵＴＯＣ領域を設けたものである。
図１において、記録データ領域直後の未記録（空き）領
域に予備のＵＴＯＣ領域を設け、正規のＵＴＯＣ領域と
ともに、ＵＴＯＣデータを記録する。ＵＴＯＣデータは
、記録データの書き換えが行われた後で記録される。従
って、記録データが追加記録され予備のＵＴＯＣ領域に
記録データが記録された場合でも、記録データが記録さ
れた直後の未記録（空き）領域に、新たにＵＴＯＣデー
タを記録することが可能である。FIG. 1 shows the recording format of the rewritable information recording medium according to the present invention, and the conventional U
Unrecorded information on a rewritable information recording medium having a TOC area (
A spare UTOC area is provided in the free area. In FIG. 1, a spare UTOC area is provided in an unrecorded (empty) area immediately after the recorded data area, and UTOC data is recorded therein together with the regular UTOC area. UTOC data is recorded after the recorded data is rewritten. Therefore, even if record data is additionally recorded and recorded in the spare UTOC area, it is possible to newly record UTOC data in the unrecorded (vacant) area immediately after the record data was recorded. .
【０００９】図２は、本発明による書き換え型情報記録
媒体のデータ管理を実現する書き換え型記録再生装置の
ブロックダイヤグラムの一例である。システムコントロ
ールを行うマイコン部は、ＣＰＵ、ＲＯＭ、ＲＡＭ、Ｉ
／Ｏで構成されており、このマイコン部に、アクセス部
、記録部、再生部、誤り検出部、判定部が連結されてい
る。アクセス部は、データの記録再生時に記録媒体の所
望の位置（時間）を検出する部分、記録部・再生部は、
記録媒体にデータの記録再生を行う部分である。誤り検
出部は、再生したＵＴＯＣデータの全データが誤りなく
再生されたかどうかを検出する部分で、ＵＴＯＣデータ
が読み取れた場合には、マイコン部によって動作を終了
し、ＵＴＯＣデータが読み取れない場合には、判定部に
移行する。判定部は、ＵＴＯＣデータの読み取りが単に
失敗したのか、あるいは傷等による媒体欠陥や記録され
たデータそのものの破壊等によって、読み取り不可能な
のかを判定する部分である。実際には、ＵＴＯＣデータ
の読み取りが不可能か否かは、読み取り回数を制限する
ことによって行うことができる。例えば、読み取り回数
を３回に制限すると、ＵＴＯＣデータの再生を３回試み
ても読み取れなかった場合には、再生不可能と判断する
。FIG. 2 is an example of a block diagram of a rewritable recording and reproducing apparatus that realizes data management of a rewritable information recording medium according to the present invention. The microcomputer section that performs system control includes the CPU, ROM, RAM, and
/O, and an access section, a recording section, a playback section, an error detection section, and a determination section are connected to this microcomputer section. The access section is a section that detects a desired position (time) on a recording medium when recording and reproducing data, and the recording section/playback section is
This is the part that records and reproduces data on a recording medium. The error detection section is a section that detects whether or not all of the reproduced UTOC data has been reproduced without errors. If the UTOC data can be read, the microcomputer section terminates the operation, and if the UTOC data cannot be read, the error detection section , moves to the determination section. The determination unit is a part that determines whether reading of the UTOC data has simply failed, or whether reading is impossible due to a medium defect such as a scratch or destruction of the recorded data itself. In fact, it is possible to determine whether or not UTOC data cannot be read by limiting the number of times it can be read. For example, if the number of times of reading is limited to three, if the UTOC data cannot be read even after three attempts, it is determined that the data cannot be reproduced.
【００１０】図３は、ＵＴＯＣデータ記録時における、
本発明による書き換え型情報記録媒体のデータ管理方法
を実現するフローチャートである。記録データの記録後
に、正規のＵＴＯＣ領域及び予備のＵＴＯＣ領域をアク
セスし、それぞれにＵＴＯＣデータを記録しておく。FIG. 3 shows the time when recording UTOC data.
1 is a flowchart for implementing a data management method for a rewritable information recording medium according to the present invention. After recording the record data, the regular UTOC area and the spare UTOC area are accessed and UTOC data is recorded in each.
【００１１】図４は、ＵＴＯＣデータ再生時における、
本発明による書き換え型情報記録媒体のデータ管理を実
現するフローチャートである。まず、正規のＵＴＯＣ領
域をアクセスし、ＵＴＯＣデータを再生する。読み取れ
た場合には終了する。読み取れなかった場合には、３回
までＵＴＯＣ領域のアクセス及び再生を繰り返し、３回
繰り返しても読み取れない場合には、読み取り不可能と
判断し、次に、予備のＵＴＯＣ領域をアクセスし、ＵＴ
ＯＣデータが読み取れるまで再生を繰り返す。FIG. 4 shows the following when reproducing UTOC data:
3 is a flowchart for realizing data management of a rewritable information recording medium according to the present invention. First, the regular UTOC area is accessed and UTOC data is reproduced. If it can be read, it ends. If the UTOC area cannot be read, the UTOC area is accessed and reproduced up to three times. If the UTOC area cannot be read even after 3 times, it is determined that the UTOC area cannot be read. Next, the spare UTOC area is accessed and the UTOC area is
Repeat playback until the OC data can be read.
【００１２】0012
【発明の効果】本発明による書き換え型情報記録媒体で
は、記録領域の未記録（空き）領域を予備のＵＴＯＣＣ
領域として、ＵＴＯＣデータを記録しておくことにより
、媒体欠陥等によるデータ消失の可能性を半減させるこ
とが可能である。Effects of the Invention In the rewritable information recording medium according to the present invention, an unrecorded (empty) area of the recording area is used as a spare UTOCC.
By recording UTOC data as an area, it is possible to reduce the possibility of data loss due to media defects by half.
【図１】本発明による書き換え型情報記録媒体の記録フ
ォーマットを示す図である。FIG. 1 is a diagram showing a recording format of a rewritable information recording medium according to the present invention.
【図２】本発明による書き換え型情報記録媒体のデータ
管理を実現する書き換え型記録再生装置のブロックダイ
ヤグラムである。FIG. 2 is a block diagram of a rewritable recording and reproducing apparatus that realizes data management of a rewritable information recording medium according to the present invention.
【図３】ＵＴＯＣデータ記録時における、本発明による
書き換え型情報記録媒体のデータ管理方法を実現するフ
ローチャートである。FIG. 3 is a flowchart for implementing a data management method for a rewritable information recording medium according to the present invention when recording UTOC data.
【図４】ＵＴＯＣデータ再生時における、本発明による
書き換え型情報記録媒体のデータ管理方法を実現するフ
ローチャートである。FIG. 4 is a flowchart for implementing a data management method for a rewritable information recording medium according to the present invention when reproducing UTOC data.
【図５】従来のＵＴＯＣ領域を有する書き換え型情報記
録媒体の記録フォーマットを示す図である。FIG. 5 is a diagram showing a recording format of a conventional rewritable information recording medium having a UTOC area.
Claims (1)
ータの管理情報であるＵＴＯＣ（Ｕｓｅｒ Ｔａｂｌ
ｅ ｏｆ Ｃｏｎｔｅｎｔｓ）データが記録されて
いる書き換え型情報記録媒体において、記録領域の未記
録領域に予備のＵＴＯＣ領域を設けたことを特徴とする
書き換え型情報記録媒体。Claim 1: A UTOC (User Table), which is management information of recorded data, is stored in a predefined area.
A rewritable information recording medium on which data (e of Contents) is recorded, characterized in that a spare UTOC area is provided in an unrecorded area of the recording area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40199190A JPH04214267A (en) | 1990-12-13 | 1990-12-13 | Rewriting type information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40199190A JPH04214267A (en) | 1990-12-13 | 1990-12-13 | Rewriting type information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04214267A true JPH04214267A (en) | 1992-08-05 |
Family
ID=18511799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40199190A Pending JPH04214267A (en) | 1990-12-13 | 1990-12-13 | Rewriting type information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04214267A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06131817A (en) * | 1992-10-16 | 1994-05-13 | Canon Inc | Information recording / playback method |
| EP0595358A3 (en) * | 1992-10-30 | 1995-01-11 | Kenwood Corp | Optical disc player. |
| JP2010186230A (en) * | 2009-02-10 | 2010-08-26 | Netmarks Inc | E-mail relay system and e-mail relay method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352175B2 (en) * | 1981-08-24 | 1988-10-18 | Mitsubishi Jukogyo Kk |
-
1990
- 1990-12-13 JP JP40199190A patent/JPH04214267A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352175B2 (en) * | 1981-08-24 | 1988-10-18 | Mitsubishi Jukogyo Kk |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06131817A (en) * | 1992-10-16 | 1994-05-13 | Canon Inc | Information recording / playback method |
| EP0595358A3 (en) * | 1992-10-30 | 1995-01-11 | Kenwood Corp | Optical disc player. |
| US5508984A (en) * | 1992-10-30 | 1996-04-16 | Kabushiki Kaisha Kenwood | Optical disc player having program title display |
| USRE39483E1 (en) * | 1992-10-30 | 2007-02-06 | Kabushiki Kaisha Kenwood | Optical disc player having program title display |
| JP2010186230A (en) * | 2009-02-10 | 2010-08-26 | Netmarks Inc | E-mail relay system and e-mail relay method |
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