JPH02216670A - Data reproducing method - Google Patents
Data reproducing methodInfo
- Publication number
- JPH02216670A JPH02216670A JP3711489A JP3711489A JPH02216670A JP H02216670 A JPH02216670 A JP H02216670A JP 3711489 A JP3711489 A JP 3711489A JP 3711489 A JP3711489 A JP 3711489A JP H02216670 A JPH02216670 A JP H02216670A
- Authority
- JP
- Japan
- Prior art keywords
- data
- sector
- discrimination information
- processing mode
- identification information
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 230000002950 deficient Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えばオーディオデータやビデオデータ等
の連続データ或いはコンピュータデータ。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applicable to continuous data such as audio data and video data, or computer data.
文字データ等の間欠データをディスクの如き記録媒体か
ら再生する場合等に用いて好適なデータ再生方法に関す
る。The present invention relates to a data reproduction method suitable for use when reproducing intermittent data such as character data from a recording medium such as a disk.
この発明は、単位記録領域にデータが記録されると共に
このデータの種類を表わす識別情報の記録された記録媒
体からデータ及び識別情報を再生し、この識別情報に応
じてデータを連続処理又は交替処理するようにすること
により、一つのシステムで用途に応じて適切な再生がで
きるようにしたものである。This invention reproduces data and identification information from a recording medium in which data is recorded in a unit recording area and in which identification information representing the type of data is recorded, and the data is continuously processed or alternately processed according to this identification information. By doing so, a single system can perform appropriate playback depending on the purpose.
−ａに、記録媒体からデータを再生する場合、オーディ
オデータやビデオデータ等の連続データの再生時に使用
される連続処理モードと、コンピュータデータ、文字デ
ータ等の間欠データの再生時に使用される交替処理モー
ドの２つのモードが考えられる。-a, when reproducing data from a recording medium, continuous processing mode used when reproducing continuous data such as audio data or video data, and alternating processing mode used when reproducing intermittent data such as computer data or character data; Two modes are possible.
連続処理モードで使用されるオーディオデータやビデオ
データ等の場合、リアルタイム性が要求されるが、連続
するデータに互いに相関があるため補間処理を行うこと
ができ、エラーの影響が成る程度回避できる。In the case of audio data, video data, etc. used in continuous processing mode, real-time performance is required, but since continuous data has a mutual correlation, interpolation processing can be performed, and the influence of errors can be avoided to a certain extent.
一方、交替処理モードでは、例えばハードディスクや光
磁気ディスク等の出荷時にデータを書き込もうとしたセ
クタに傷等のために欠陥場所があった場合には不良セク
タマークを付けてそのセクタを使えないようにし、対応
するデータは予備として用意された交替セクタに書き込
み、リードアフタライト時等に交替セクタに飛ぶように
している。On the other hand, in the replacement processing mode, for example, if there is a defective area due to scratches or the like in a sector in which data is to be written when shipping a hard disk or magneto-optical disk, a defective sector mark is placed on the sector so that the sector cannot be used. , the corresponding data is written in a spare sector prepared as a reserve, and is made to jump to the spare sector during read-after-write, etc.
ところが、上述の連続処理モードの場合、リアルタイム
性がある利点はあるものの、エラーがある大きさ以上に
なると処理しきれず、信転性が乏しい欠点がある。また
、交替処理モードの場合、高信鯨性が得られる利点はあ
るものの、リアルタイム性が難しい欠点がある。However, in the case of the above-mentioned continuous processing mode, although it has the advantage of real-time performance, it has the disadvantage that it cannot be processed completely if the error exceeds a certain size, and reliability is poor. In addition, in the case of the alternate processing mode, although it has the advantage of being highly reliable, it has the disadvantage that real-time performance is difficult.
この発明は斯る点に鑑みてなされたもので、連続処理と
交替処理の両方の利点を取り込んで処理することが可能
なデータ再生方法を提供するものである。The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a data reproducing method that can process data by incorporating the advantages of both continuous processing and alternating processing.
（課題を解決するための手段〕
この発明によるデータ再生方法は、単位記録領域にデー
タが記録されると共にこのデータの種類を表わす識別情
報の記録された記録媒体からデータ及び識別情報を再生
し、この識別情報に応じてデータを連続処理又は交替処
理するようにする。(Means for Solving the Problems) A data reproduction method according to the present invention reproduces data and identification information from a recording medium in which data is recorded in a unit recording area and identification information representing the type of data is recorded, Data is processed continuously or alternately depending on this identification information.
単位記録領域例えばセクタにデータの種類を表わす識別
情報すなわちデータを連続処理モードで処理すべきか、
交替処理モードで処理すべきかを表わす識別情報を予め
記録しておく、そして、再生時にはこの識別情報に応じ
てデータを連続処理するか又は交替処理する。これによ
り一つのシステムで用途に応じた適切な再生ができ、連
続処理。Should identification information indicating the type of data in a unit recording area, for example, a sector, i.e., data, be processed in continuous processing mode?
Identification information indicating whether processing should be performed in alternate processing mode is recorded in advance, and during reproduction, data is continuously processed or alternately processed in accordance with this identification information. This allows a single system to perform appropriate regeneration according to the application, and allows for continuous processing.
交替処理の夫々利点であるリアルタイム性と高信鯨性を
確保できる。It is possible to ensure real-time performance and high reliability, which are the respective advantages of alternate processing.
以下、この発明の一実施例を第１図及び第２図に基づい
て詳しく説明する。Hereinafter, one embodiment of the present invention will be described in detail based on FIGS. 1 and 2.
第１図において、磁気ディスク等の円盤状記録媒体から
のデータの再生が開始されると、まず、ステップ（１）
で、この媒体にデータと共に記録されているデータの種
類を表わす識別情報すなわちデータを連続処理モードで
処理すべきか、交替処理モードで処理すべきかを表わす
識別情報を検出する。この識別情報はこの媒体の単位記
録領域すなわちセクタの所定位置又はディレクトリに記
録されているものである。In FIG. 1, when reproduction of data from a disk-shaped recording medium such as a magnetic disk is started, first step (1) is performed.
Then, identification information representing the type of data recorded together with the data on this medium, that is, identification information representing whether the data should be processed in continuous processing mode or alternate processing mode, is detected. This identification information is recorded in a predetermined position or directory of a unit recording area of this medium, that is, a sector.
ステップ（１）で検出された識別情報が連続処理モード
を表わすものであれば、すなわちデータの種類がオーデ
ィオデータ、ビデオデータ等の連続データであればステ
ップ（２）に進んで、連続的にデータを読み出して連続
処理を行う。If the identification information detected in step (1) indicates a continuous processing mode, that is, if the type of data is continuous data such as audio data or video data, the process proceeds to step (2). Read out and perform continuous processing.
ステップ（１）で検出された識別情報が交替処理モード
を表わすものであれば、すなわちデータの種類がコンピ
ュータデータ、文字データ等の間欠データであれば、ス
テップ（３）以降の動作に入る。If the identification information detected in step (1) indicates the alternate processing mode, that is, if the type of data is intermittent data such as computer data or character data, the process starts from step (3).
ステップ（３）で、データを読み出そうとするセクタが
不良セクタか否かを判断し、不良セクタでなければステ
ップ（４）でそのセクタのデータを読み出し、ステップ
（５）で次のセクタへ進み、ステップ（３）に戻って不
良セクタか否かを判断し、不良セクタでなければステッ
プ（４）でそのセクタのデータを読み出し、以下この動
作を繰り返えす。In step (3), it is determined whether the sector from which data is to be read is a bad sector or not. If it is not a bad sector, the data in that sector is read in step (4), and in step (5) the data is transferred to the next sector. The process then returns to step (3) to determine whether or not it is a bad sector. If it is not a bad sector, the data in the sector is read out in step (4), and this operation is repeated thereafter.
一方、ステップ（３）で、データを読み出そうとするセ
クタが不良であることがわかれば、ステップ（６）でこ
の不良セクタに対応する交替セクタをアクセスし、その
交替セクタのデータを読み出し、ステップ（７）で次の
セクタすなわち不良セクタの次のセクタに進み、ステッ
プ（３）に戻って不良セクタか否かを判断する動作を繰
り返えす。On the other hand, if it is found in step (3) that the sector from which data is to be read is defective, in step (6) the replacement sector corresponding to this defective sector is accessed, and the data in the replacement sector is read. In step (7), the process advances to the next sector, that is, the sector next to the bad sector, and the operation returns to step (3) to repeat the operation of determining whether or not it is a bad sector.
このステップ（３）以下の交替処理の動作を、第２図の
媒体の記録パターンを参照して詳述する。第２図におい
て斜線で表わすセクタすなわち４番目のセクタが不良セ
クタとする。なお、デイレクトリドラックは交替処理さ
れたセクタの対応関係等が記録されているものである。The operation of the replacement process from step (3) onwards will be described in detail with reference to the recording pattern of the medium shown in FIG. In FIG. 2, the hatched sector, that is, the fourth sector, is a defective sector. Note that the directory track records the correspondence of sectors that have been replaced.
１番目のセクタはステップ（３）で判断して不良セクタ
でないのでステップ（４）でそのデータを読み出す、２
番目、３番目のセクタに付いても同様である。４番目の
セクタはステップ（３）で判断して不良セクタであるの
で、ステップ（６）で例えば他のトラックに設けられて
いる対応する交替セクタに飛び、４番目のセクタに対応
する交替セクタのデータを読み出す、そして、ステップ
（７）で不良セクタである４番目のセクタの次の５番目
のセクタに進み、ステップ（３）に戻って不良セクタか
否かを判断し、不良セクタでないのでステップ（４）で
そのデータを読み出す、以下、同様の動作を繰り返えす
、勿論交替セクタは第２図の如く別なトラックに設けな
くとも同一のトラックの所定位置に設ける等その他種々
の配置の仕方が考えられる。Since the first sector is not a bad sector as determined in step (3), its data is read in step (4).
The same applies to the third and third sectors. Since the fourth sector is determined to be a bad sector in step (3), in step (6), for example, the process jumps to the corresponding spare sector provided on another track, and the process is performed as follows: The data is read, and in step (7) the process advances to the fifth sector following the fourth sector which is a bad sector, and returns to step (3) to determine whether or not it is a bad sector. The data is read in (4), and the same operation is repeated thereafter.Of course, the replacement sector does not need to be placed on a separate track as shown in Figure 2, but may be placed at a predetermined position on the same track, or in other various arrangements. is possible.
このように本実施例ではオーディオデータ、ビデオデー
タ等の連続データとコンピュータデータ。In this way, in this embodiment, continuous data such as audio data and video data and computer data are used.
文字データ等の間欠データが単独で記録されている場合
は勿論混在して記録している場合でもセクタやディレク
トリに識別情報を入れておけば、この識別情報に応じて
連続処理モードと交替処理モードと切り換えて使用でき
る。一般にはオーディオデータやビデオデータ等の連続
データは補間処理が可能であるためわざわざ交替処理モ
ードにして信転性を上げる必要は少ないが、用途に応じ
てはリアルタイム性を捨てても信鯨性を上げたいと云う
場合も考えられ、このような場合も適用可能である。Even when intermittent data such as character data is recorded alone or mixed, if identification information is entered in the sector or directory, continuous processing mode and alternate processing mode can be selected according to this identification information. It can be used by switching with. In general, continuous data such as audio data and video data can be interpolated, so there is little need to go to the trouble of alternating processing mode to improve reliability. There may be cases where you want to increase the amount, and this is also applicable to such cases.
上述の如くこの発明によれば、連続処理モードと交替処
理モードを識別情報に応じて切り換えて使用するように
したので、一つのシステムで用途に応じた適切な再生が
でき、連続処理、交替処理の夫々利点であるリアルタイ
ム性と高信転性を確保できる。As described above, according to the present invention, since the continuous processing mode and the alternating processing mode are switched and used according to the identification information, a single system can perform appropriate reproduction according to the purpose, and continuous processing and alternating processing can be performed. It is possible to secure real-time performance and high reliability, which are the respective advantages of .
第１図はこの発明の一実施例を示すフローチャート、第
２図は交替処理の説明に供するための図である。
（１）は識別情報検出のステップ、（２）は連続処理の
ステップ、（３）〜（７）は交替処理のステップである
。FIG. 1 is a flowchart showing one embodiment of the present invention, and FIG. 2 is a diagram for explaining replacement processing. (1) is an identification information detection step, (2) is a continuous processing step, and (3) to (7) are alternate processing steps.
Claims (1)
類を表わす識別情報の記録された記録媒体から上記デー
タ及び識別情報を再生し、 該識別情報に応じて上記データを連続処理又は交替処理
するようにしたことを特徴とするデータ再生方法。[Claims] Reproducing the data and identification information from a recording medium in which data is recorded in a unit recording area and recording identification information representing the type of data, and continuously reproducing the data according to the identification information. A data reproducing method characterized by performing processing or alternate processing.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1037114A JP2725345B2 (en) | 1989-02-16 | 1989-02-16 | Data reproduction method and apparatus |
| US07/466,028 US5130969A (en) | 1989-02-15 | 1990-01-17 | Apparatus having defective sector compensation coupled with analog information mode and digital information mode recording/reproducing capability |
| DE69021227T DE69021227T2 (en) | 1989-02-15 | 1990-02-14 | Data recording and reproducing apparatus. |
| EP90102891A EP0383298B1 (en) | 1989-02-15 | 1990-02-14 | Data recording and reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1037114A JP2725345B2 (en) | 1989-02-16 | 1989-02-16 | Data reproduction method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02216670A true JPH02216670A (en) | 1990-08-29 |
| JP2725345B2 JP2725345B2 (en) | 1998-03-11 |
Family
ID=12488576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1037114A Expired - Lifetime JP2725345B2 (en) | 1989-02-15 | 1989-02-16 | Data reproduction method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2725345B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6938199B2 (en) | 1998-05-01 | 2005-08-30 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US7320012B2 (en) | 2001-04-12 | 2008-01-15 | Hitachi, Ltd. | Method and apparatus for file management |
| JP2011008879A (en) * | 2009-06-26 | 2011-01-13 | Toshiba Storage Device Corp | Disk drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346660A (en) * | 1986-08-13 | 1988-02-27 | Nec Corp | Data writing error preventing system to magnetic tape media |
| JPS63316366A (en) * | 1987-06-18 | 1988-12-23 | Matsushita Electric Ind Co Ltd | Optical system data file device |
-
1989
- 1989-02-16 JP JP1037114A patent/JP2725345B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346660A (en) * | 1986-08-13 | 1988-02-27 | Nec Corp | Data writing error preventing system to magnetic tape media |
| JPS63316366A (en) * | 1987-06-18 | 1988-12-23 | Matsushita Electric Ind Co Ltd | Optical system data file device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6938199B2 (en) | 1998-05-01 | 2005-08-30 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US6948111B2 (en) | 1998-05-01 | 2005-09-20 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US7068918B1 (en) | 1998-05-01 | 2006-06-27 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US7283729B2 (en) | 1998-05-01 | 2007-10-16 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US7286751B2 (en) | 1998-05-01 | 2007-10-23 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US8521012B2 (en) | 1998-05-01 | 2013-08-27 | Samsung Electronics Co., Ltd. | Recording medium for storing real time recording/reproduction information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
| US7320012B2 (en) | 2001-04-12 | 2008-01-15 | Hitachi, Ltd. | Method and apparatus for file management |
| JP2011008879A (en) * | 2009-06-26 | 2011-01-13 | Toshiba Storage Device Corp | Disk drive |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2725345B2 (en) | 1998-03-11 |
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