JPS5965910A - Disk recording and reproducing device - Google Patents
Disk recording and reproducing deviceInfo
- Publication number
- JPS5965910A JPS5965910A JP17552882A JP17552882A JPS5965910A JP S5965910 A JPS5965910 A JP S5965910A JP 17552882 A JP17552882 A JP 17552882A JP 17552882 A JP17552882 A JP 17552882A JP S5965910 A JPS5965910 A JP S5965910A
- Authority
- JP
- Japan
- Prior art keywords
- information
- track
- sector
- recorded
- case
- 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
Classifications
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- 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
- G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は同一情報を複数回記録して信頼性を向上した円
盤状記録媒体を構成要素とする記録再生装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording/reproducing device whose component is a disc-shaped recording medium whose reliability is improved by recording the same information multiple times.
従来例の構成とその問題点
一般に、光ディスク、磁気ディスク等は円盤状の記録媒
体であり、回転方向、半径方向に記録再生ヘッドを移動
させることによって特定の位置をアクセスすることが出
来るランダムアクセスの記録媒体として優れている。す
なわち、半径方向にトラック、トランクを円周上で分割
したセクタに分けるとトランクとセクタ番号によって情
報の記録した位置を表わすことが出来る。記録した情報
のアクセスを早くするためには、情報を順番に並べ、し
かも情報と情報の記録されているアドレスを1対1に対
応させておく必要がある。Conventional configurations and their problems In general, optical disks, magnetic disks, etc. are disk-shaped recording media, and they are random access disks that can access specific positions by moving the recording/reproducing head in the rotational direction and radial direction. Excellent as a recording medium. That is, if the track and trunk are divided into sectors on the circumference in the radial direction, the position where information is recorded can be expressed by the trunk and sector number. In order to speed up access to recorded information, it is necessary to arrange the information in order and to make a one-to-one correspondence between the information and the address where the information is recorded.
この種円盤状の記録媒体に情報を記録再生する装置にお
いて、記録情報の信頼性を高める方法として、従来は第
1図に示すように、円周をいくつかに分割し、その分割
した群の中に複数回記録する方法がとられていた。第1
図は円周をn(1)〜n(4)の4つの群に分割し、そ
の1つの群をn1t11〜n+(4)の4回に分けて同
じ情報を記録した例である。この場合、円盤状の記録媒
体に円弧状の傷や材質の欠陥がありた場合に連続して複
数回記録していても、その複数回記録情報の全部が壊れ
る事がある。又、円盤状の記録媒体は当然のことながら
回転しているた・め、記録再生ヘッド等が異常に接触し
たり、外部のものが触れることによって円弧状の傷がつ
きやすい。In an apparatus for recording and reproducing information on this kind of disc-shaped recording medium, as a method of increasing the reliability of recorded information, the circumference of the circle is divided into several parts as shown in Figure 1, and each of the divided groups is A method was used to record the data multiple times. 1st
The figure shows an example in which the circumference is divided into four groups, n(1) to n(4), and one group is divided into four times, n1t11 to n+(4), and the same information is recorded. In this case, if the disc-shaped recording medium has an arc-shaped scratch or a defect in its material, even if it is recorded several times in succession, all of the information recorded multiple times may be destroyed. Furthermore, since the disk-shaped recording medium is of course rotating, it is likely to be scratched in an arcuate manner by abnormal contact with a recording/reproducing head or the like or by being touched by an external object.
発明の目的
本発明の目的は、光ティスフ、磁気ディスク等の円盤状
記録媒体の欠陥や傷による情報の破壊を軽減することに
ある。OBJECTS OF THE INVENTION An object of the present invention is to reduce the destruction of information due to defects and scratches in disc-shaped recording media such as optical disks and magnetic disks.
発明の構成
本発明は情報と情報を記録したアドレスを対応させ、か
つ重要な情報を記録する際に同一情報を同一円盤上の異
なるトラックでかつトラック間においては互に異なるセ
クタ位置に複数回記録する機能を有する円盤記録再生装
置である。Structure of the Invention The present invention associates information with the address where the information is recorded, and when recording important information, the same information is recorded multiple times on different tracks on the same disk and in different sector positions between tracks. This is a disc recording and reproducing device that has the function of
実施例の説明
第2図は本発明の一実施例の円盤記録再生装置に用いる
円盤状記録媒体の構成を示す図である。DESCRIPTION OF THE EMBODIMENTS FIG. 2 is a diagram showing the configuration of a disc-shaped recording medium used in a disc recording/reproducing apparatus according to an embodiment of the present invention.
情報n+(1)は0番トラックのセクタ1に記録し、2
回目のn2(1)は4番トラック(但しβ≧ixm/N
)のセクタ5に記録する。ここで、Nは1トラツクの
セクタ数では16)であり、mは同一情報の記録回数で
あり、iはセクタ位置(番号)である。Information n+(1) is recorded in sector 1 of track 0, and
The second n2(1) is the 4th track (however, β≧ixm/N
) is recorded in sector 5. Here, N is the number of sectors in one track (16), m is the number of times the same information is recorded, and i is the sector position (number).
以下同様にn3(1)はトラック数がさらに6だけ離れ
たトラックのセクタ9に記録する。従って、14Nのと
きは、0番トラックにn+(ilに情報が記録され、n
2(jJ 、 n3(2)、・・・はそれぞれ1番トラ
ックのセクタ2N//n]、2β番トラックのセクタ3
N7m・・、に記録される。Similarly, n3(1) is recorded in sector 9 of a track further away by six tracks. Therefore, when 14N, information is recorded in n+(il) on track 0, and n
2 (jJ, n3(2), ... are sector 2N//n of track 1, respectively), sector 3 of track 2β
N7m... is recorded.
i>Nのときは、i/Nの商をq、余りをpとすると、
n+(i)は9番トラックのセフタル、旧(1)はβ−
1−9番トラックのセクタ(p+N/m)、・・・に記
録される。従って円周方向にq番トランク全部に傷があ
った場合も、(1+211 、 (1+31 + q+
41・・のトラックに残された情報から元の情報は復元
できる。又、セクタをp+”/” + p+ 2N/m
、・・・にずらせることによシ、半径方向のトラック
にまたがる犬き々傷についても情報は保護される。なお
、複数回記録した情報の検定は、各情報を比較する方法
、検定用チェック情報の付加により正しい情報を選べば
よい。When i>N, let the quotient of i/N be q and the remainder be p, then
n+(i) is the 9th track Seftar, old (1) is β-
It is recorded in sectors (p+N/m), . . . of tracks 1-9. Therefore, even if there are scratches on the entire trunk q in the circumferential direction, (1+211, (1+31 + q+
The original information can be restored from the information left on the tracks 41... Also, the sector is p+”/”+p+ 2N/m
, . . . , the information is protected even for dog bites that straddle the radial track. Note that information recorded multiple times may be verified by selecting the correct information by comparing each piece of information or by adding verification check information.
このよう々装置においては、簡単な手段(演算)によっ
て、特定の情報が記録されているアドレスが一義的に見
つけることが出来、円盤状記録媒体の大きな傷、欠陥か
ら情報を保護することができる。In such a device, the address where specific information is recorded can be uniquely found by simple means (calculation), and the information can be protected from large scratches and defects on the disc-shaped recording medium. .
特に光ディスクのような大容量で、かつ人手で持ち歩く
媒体のディレクトリ領域について、全体のメモリ容−(
社)に対して、ディレクトリ領域の占める割合が少いた
め、複数回記録しても全体の容量に対して無視出来る量
であり、データの信頼性に対する効果が太きい。In particular, the total memory capacity (
Since the directory area occupies a small proportion of the total capacity (Company), even if multiple recordings are made, the amount is negligible compared to the total capacity, and has a significant effect on data reliability.
発明の効果
本発明によれば円盤状記録媒体の異なるトラック上でか
つ周方向の異なる位置に同一情報を複数回記録している
ので、円盤の円周方向および径方向の破損に対して、情
報の欠損を極めて少々くすることができ、信頼性の向上
がはがれる。Effects of the Invention According to the present invention, the same information is recorded multiple times on different tracks of a disc-shaped recording medium and at different positions in the circumferential direction. It is possible to minimize defects in the number of defects, thereby improving reliability.
第1図は従来の一実施例の円盤記録再生装置における円
盤状記録媒体の説明図、第2図は本発明の一実施例の円
盤記録再生装置における円盤状記録媒体の説明図である
。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第2
図
nり(f)FIG. 1 is an explanatory diagram of a disc-shaped recording medium in a disc recording/reproducing apparatus according to an embodiment of the prior art, and FIG. 2 is an explanatory diagram of a disc-shaped recording medium in a disc recording/reproducing apparatus according to an embodiment of the present invention. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure nri (f)
Claims (1)
個の群に分割し、規定のトランク数だけ離れた各トラッ
クにおいてルjだけずれたセクタ位置同一情報をm回記
録する手段を有する円盤記録再生装置。The number of sectors K on the track of the disc-shaped recording medium is 1//In
A disk recording and reproducing apparatus has means for recording the same sector position information m times shifted by lj in each track separated by a prescribed number of trunks.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17552882A JPS5965910A (en) | 1982-10-05 | 1982-10-05 | Disk recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17552882A JPS5965910A (en) | 1982-10-05 | 1982-10-05 | Disk recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5965910A true JPS5965910A (en) | 1984-04-14 |
Family
ID=15997635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17552882A Pending JPS5965910A (en) | 1982-10-05 | 1982-10-05 | Disk recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5965910A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS637567A (en) * | 1986-06-27 | 1988-01-13 | Fuji Photo Film Co Ltd | Data recording method on optical disk |
WO2003105150A1 (en) * | 2002-06-11 | 2003-12-18 | ソニー株式会社 | Disc recording medium, recording method, disc drive device |
JP2009272038A (en) * | 2009-08-19 | 2009-11-19 | Sony Corp | Recording method, recording device |
JP2010027200A (en) * | 2002-01-22 | 2010-02-04 | Panasonic Corp | Information recording medium, recording apparatus, reproduction apparatus, recording method, and reproduction method |
JP2011044227A (en) * | 2010-10-25 | 2011-03-03 | Sony Corp | Disk recording medium, playback method and playback device |
-
1982
- 1982-10-05 JP JP17552882A patent/JPS5965910A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS637567A (en) * | 1986-06-27 | 1988-01-13 | Fuji Photo Film Co Ltd | Data recording method on optical disk |
JP2010027200A (en) * | 2002-01-22 | 2010-02-04 | Panasonic Corp | Information recording medium, recording apparatus, reproduction apparatus, recording method, and reproduction method |
US7924695B2 (en) | 2002-01-22 | 2011-04-12 | Panasonic Corporation | Information recording medium, recording apparatus, reproduction apparatus, recording method, and reproduction method |
WO2003105150A1 (en) * | 2002-06-11 | 2003-12-18 | ソニー株式会社 | Disc recording medium, recording method, disc drive device |
US7313062B2 (en) | 2002-06-11 | 2007-12-25 | Sony Corporation | Disc recording medium, recording method, disc drive device |
JP2009272038A (en) * | 2009-08-19 | 2009-11-19 | Sony Corp | Recording method, recording device |
JP2011044227A (en) * | 2010-10-25 | 2011-03-03 | Sony Corp | Disk recording medium, playback method and playback device |
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