JPH04176059A - Storage medium - Google Patents
Storage mediumInfo
- Publication number
- JPH04176059A JPH04176059A JP30364690A JP30364690A JPH04176059A JP H04176059 A JPH04176059 A JP H04176059A JP 30364690 A JP30364690 A JP 30364690A JP 30364690 A JP30364690 A JP 30364690A JP H04176059 A JPH04176059 A JP H04176059A
- Authority
- JP
- Japan
- Prior art keywords
- read
- storage area
- area
- shaped
- fan
- 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
- 230000015654 memory Effects 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012876 topography 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
-
- 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
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- 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
- G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
-
- 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
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1259—Formatting, e.g. arrangement of data block or words on the record carriers on discs with ROM/RAM areas
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- 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
本発明は、読み出し専用記憶領域を含む円板状の記憶媒
体に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc-shaped storage medium including a read-only storage area.
従来の技術
光ディスク等のメモリの製造メーカーにおいて、安価に
既知のデータをユーザに提供するために、書き換え不可
能な読み出し専用のＲＯＭ 領域と読み出しおよび書き
換え可能なＲＡＭ領域を混在したメモリを市場に出すこ
とが計画されている。光デイスク製造メーカーは、光デ
ィスクの出荷時に、ＲＯＭ領域に既存データとして、例
えば、地図情報１店舗のレイアウトと言う基本部分の情
報を提供し、各ユーザが書き換え可能なＲＡ Ｍ ｇ域
にＲＯＭ ８Ｎ域の基本部分の追加、訂正、削除等の更
新情報を保存し、最新の情報を保持することにより、従
来、ＲＯＭ ９Ｍ域のみの光ディスク（既存データを格
納）とＲＡ Ｍ ｇ域のみの光ディスク（更新データを
格納）とで複数枚の光ディスクの維持が必要であったも
のが、１枚の光ディスクに全ての情報が格納され、情報
の管理が容易になる。また情報へのアクセスおよび検索
の効率が向上し、各ユーザにおける仕事の効率の向上が
期待できる。第１２図、第１３図はこのようにＲＡ Ｍ
領域とＲＯＭ ９Ｍ域を１つの光ディスクに設けた構
造を示す。第１２図は外周側にＲＯＭ領域を設け、内周
側にＲＡＭ領域を設けた状態を示す。第１３図は第１２
図の光ディスクを平面的に表現したもので、ＲＡＭ領域
番よ０〜７トラソクよりなり、ｌトラックには１２セク
タがあり、ＲＯＭ ｇ域は８〜】６トラツクよりなり、
ｌトラックのセクタ数は同様に１２個である、発明が解
決しようとする課題
第１３図に示すようなＲＯＭとＲＡＭの配置の場合、Ｒ
ＯＭ 領域に記憶された基本事項を更新するとき、その
更新事項を記憶するＲＡＭ５Ｊｔ域が、最初はＲＯＭ
領域に近い所に記憶できるが、更新量が多くなると遠く
なる。このため、更新のための書き込みや、更新事項の
読み出しに時間がかかるようになる。Conventional Technology Manufacturers of memories such as optical disks market memories that have a mix of non-rewritable, read-only ROM areas and read-and-rewritable RAM areas, in order to provide known data to users at low cost. That is planned. When optical disc manufacturers ship optical discs, they provide existing data in the ROM area, such as basic information such as map information and the layout of one store, and store ROM 8N area in the RAM g area, which can be rewritten by each user. By storing updated information such as additions, corrections, deletions, etc. of the basic parts of the ROM and keeping the latest information, conventionally, optical discs with only ROM 9M area (stored existing data) and optical discs with only RAM G area (updated) Previously, it was necessary to maintain multiple optical discs for data storage, but now all information is stored on one optical disc, making information management easier. Furthermore, the efficiency of accessing and searching for information is improved, and it is expected that each user's work efficiency will be improved. Figures 12 and 13 show RAM
This shows a structure in which a ROM area and a 9M ROM area are provided on one optical disk. FIG. 12 shows a state in which a ROM area is provided on the outer circumferential side and a RAM area is provided on the inner circumferential side. Figure 13 is the 12th
This is a two-dimensional representation of the optical disc shown in the figure.The RAM area number consists of tracks 0 to 7, the l track has 12 sectors, and the ROM g area consists of tracks 8 to 6.
Problem to be Solved by the Invention In the case of the arrangement of ROM and RAM as shown in FIG. 13, where the number of sectors in the l track is 12,
When basic items stored in the OM area are updated, the RAM5Jt area that stores the updated items is initially transferred to the ROM.
It can be stored close to the area, but if the amount of updates increases, it will become farther away. For this reason, writing for updating and reading updated items takes time.
本発明は、上述の問題点に鑑みてなされたもので、ＲＯ
Ｍ５Ｉ域の更新情報をできるだけそのＲＯＭ５Ｉ域に近
いＲＡＭ領域に配置した記憶媒体を提供することを目的
とする。The present invention has been made in view of the above-mentioned problems.
It is an object of the present invention to provide a storage medium in which update information of an M5I area is arranged in a RAM area as close as possible to the ROM5I area.
課題を解決するための手段
上記目的を達成するため、本発明の記憶媒体は円板状の
読み書き可能な記憶領域内にそれぞれの間に読み書き可
能な領域を配置した複数の同心円環状の読み出し専用記
憶領域を設け、この読み出し専用記憶領域の更新情報を
この読み出し専用記憶領域に近接した前記読み書き可能
な記憶９域に記憶するよう構成したものである。また、
円板状の読み書き可能な記憶領域内に同心の扇状の読み
出し専用記憶領域を設け、この読み出し専用記憶領域の
更新情報をこの読み出し専用記憶領域の扇状を形成する
内外半径で囲まれる範囲内の前記読み書き可能な記憶領
域に記憶するようにしたものである。また、前記扇状を
形成する内外半径で囲まれる範囲外の前記読み書き可能
な記憶領域にも前記読み出し専用記憶領域の更新領域を
設けたものである。また、前記扇状の読み出し専用記憶
領域をそれぞれの間に前記読み書き可能な記憶領域を配
置して設けたものである。また、前記扇状の読み出し専
用記憶領域を複数設け、それらは互いに同一の半径内に
は存在しないように配置したものである。また、円板状
の読み書き可能な記憶領域内に同心の円環状および同心
の扇状の読み出し専用記憶領域を設け、この読み出し専
用記憶領域の更新情報を前記円環状の読み出し専用記憶
領域の近傍の前記読み書き可能な記憶領域および前記扇
状の読み出し専用記憶領域の扇状を形成する内外半径で
囲まれる範囲内の前記読み書き可能な記憶領域に記憶す
るようにしたものであり、また、さらに前記扇状を形成
する内外半径で囲まれる範囲外の前記読み書き可能な記
憶領域にも前記扇状の読み出し専用記憶領域の更新領域
を設けたものである。Means for Solving the Problems In order to achieve the above object, the storage medium of the present invention includes a plurality of concentric ring-shaped read-only memories in which read-write areas are arranged between disk-shaped read-write storage areas. A storage area is provided, and update information of this read-only storage area is stored in the read/write storage area 9 adjacent to the read-only storage area. Also,
A concentric fan-shaped read-only storage area is provided within a disk-shaped readable/writable storage area, and update information of this read-only storage area is stored within the range surrounded by the inner and outer radii of the fan-shaped read-only storage area. The information is stored in a readable and writable storage area. Further, an update area of the read-only storage area is also provided in the read/write storage area outside the range surrounded by the inner and outer radii forming the fan shape. Further, the fan-shaped read-only storage area is provided with the readable and writable storage area arranged between each of the fan-shaped read-only storage areas. Further, a plurality of fan-shaped read-only storage areas are provided, and they are arranged so that they do not exist within the same radius. Further, a concentric ring-shaped and a concentric fan-shaped read-only storage area are provided in the disk-shaped read/write storage area, and update information of the read-only storage area is stored in the read-only storage area near the circular read-only storage area. The information is stored in the read/write storage area within a range surrounded by the inner and outer radii of the fan-shaped read-only storage area and the fan-shaped read-only storage area, and further forms the fan-shaped read-only storage area. An update area of the fan-shaped read-only storage area is also provided in the read/write storage area outside the range surrounded by the inner and outer radii.
作用
複飲の同心円環状の読み出し専用記憶領域のそれぞれの
間に読す書き可能な記憶領域を配置しているので、各円
環状の読み出し専用記憶Ｍ域の更新情報をこの近傍の読
み書き可能な記憶領域に記憶することが可能になる。こ
れによりシーク（読み取り部分の移動）が少なくなり、
上位装置に対して高速にデータを転送することが可能と
なる。Since a readable and writable storage area is arranged between each of the concentric ring-shaped read-only storage areas of the double-drink function, the update information of each ring-shaped read-only storage area M is stored in the read-write storage area in the vicinity. It becomes possible to store it in the area. This reduces seeks (moving the read part),
It becomes possible to transfer data to a host device at high speed.
また、円板状の読み書き可能な記憶領域内に同心の扇状
の読み出し専用記憶領域を設けることにより扇状の読み
出し専用記憶ｗＩ域の更新情報をこの扇状の読み出し専
用記憶領域のトラックと同しまたは近接した読み書き可
能な記憶領域内のトランクに記憶することができるので
高速なシークが可能になり、上位装置６二対して高速に
データを転送することができるようになる。また、この
扇状の読み出し専用記憶領域の外半径または内半径に近
接する読み書き可能な記憶領域にも更新情報を記憶する
ことにより、扇状を形成する内外半径で囲まれる読み書
き可能な記憶領域が全て使われた後でもシークの少ない
読み出し、書き込みが可能となる。また、扇状の読み出
し専用記憶領域を複数個設け、それぞれの間に読み書き
可能な記憶領域を配置することにより、扇状を形成する
外半径より大きな半径および内半径より小さな半径の読
み書き可能な記憶領域のトラックを更新情報の記憶に有
効に使用できるようになる。また、扇状の読み出し専用
記憶領域を複数個設け、それ等は互いに同一の半径内に
は存在しないように配置することにより、各扇状の読み
出し専用記憶領域はその扇状の半径内の読み書き可能な
記憶領域を他の扇状の読み出し専用記憶領域に用いられ
ることなく専用に更新情報記憶領域として使用すること
ができる。In addition, by providing a concentric fan-shaped read-only storage area within the disc-shaped read-write storage area, update information in the fan-shaped read-only storage wI area can be stored on the same track or in close proximity to the fan-shaped read-only storage area. Since the data can be stored in a trunk in a read/write storage area, high-speed seeking is possible, and data can be transferred to the host device 62 at high speed. In addition, by storing update information in the read/write storage area adjacent to the outer radius or inner radius of this fan-shaped read-only storage area, all the read/write storage areas surrounded by the inner and outer radii forming the fan shape are used. Reads and writes with fewer seeks are possible even after the In addition, by providing multiple fan-shaped read-only storage areas and arranging read/write storage areas between them, we can create read/write storage areas with a radius larger than the outer radius and smaller than the inner radius forming the fan shape. Tracks can now be effectively used to store updated information. In addition, by providing multiple fan-shaped read-only storage areas and arranging them so that they do not exist within the same radius, each fan-shaped read-only storage area is used to store readable and writable storage within the fan-shaped radius. The area can be used exclusively as an update information storage area without being used as another fan-shaped read-only storage area.
また、円板状の読み書き可能な記憶領域内に同心の円環
状のおよび円心の扇状の読み出し専用記憶領域を設ける
ことにより、円環状および扇状それぞれの特徴を生かし
た使用方法が可能となる。Further, by providing a concentric ring-shaped and a circular fan-shaped read-only storage area within the disk-shaped readable and writable storage area, it is possible to utilize the characteristics of each of the circular and fan shapes.
この場合、扇状領域の更新情報をこの扇状を形成する外
半径外や内半径内の読み書き可能な記憶領域にも記憶で
きるようにすると更新情報をより多く記憶できるように
なる。In this case, if the update information of the fan-shaped area can also be stored in readable and writable storage areas outside the outer radius and inside the inner radius forming the fan-shape, more update information can be stored.
実施例 以下、本発明の実施例を図面を参照して説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
第１図、第２図は本発明の第１実施例を表し、第１図ば
光ディスクのＲＯＭｇ域２とＲＡＭ領域１の配置を示す
図、第２図は第１図の光ディスクを平面的に表し、ＲＯ
Ｍｑ域２、ＲＡＭ５１Ｍ１（７）トラック、セクタの配
置を表したのである。本実施例はＲＯＭ領域２とＲＡＭ
領域１を複数箇所設けて、それぞれの領域に１条あるい
は隣接する複数条のトランクを配置する。これによりＲ
ＯＭ１城２の更新情報を可能な限り、そのＲＯＭ領域２
に近いＲＡ Ｍ 領域ｌに配置することができる。例え
ば、第２図において、トラック番号３．セクタ番号Ｏの
位置の情報が古くなってきたので、更新する場合、トラ
ック番号２．セクタ番号１１に最新の更新情報を書き込
む。これにより第１２図、第１３図で説明した従来のＲ
ＯＭ ｅｆ４ｔｈ！２ 、 ＲＡ Ｍ ％ｆ４域１の配
置よりもシークが少なくなり、上位装置に対して高速に
データを転送することができるようになる。1 and 2 show a first embodiment of the present invention, with FIG. 1 showing the arrangement of the ROMg area 2 and RAM area 1 of the optical disk, and FIG. 2 showing the optical disk of FIG. 1 in a planar view. Representation, R.O.
It represents the arrangement of Mq area 2, RAM 51M1 (7) tracks, and sectors. In this embodiment, ROM area 2 and RAM
A plurality of regions 1 are provided, and one trunk or a plurality of adjacent trunks are arranged in each region. This allows R
Update information of OM1 Castle 2 is stored in its ROM area 2 as much as possible.
It can be placed in the RAM area l near . For example, in FIG. 2, track number 3. The information on the position of sector number O has become outdated, so if you want to update it, track number 2. Write the latest update information to sector number 11. As a result, the conventional R explained in FIGS. 12 and 13
OM ef4th! 2. RAM % f4 There are fewer seeks than in the area 1 arrangement, and data can be transferred to the host device at high speed.
次に第２実施例を第３図、第４図を用いて説明する。本
実施例は、ＲＯＭ１Ｊｉ域２をＲＡ Ｍ ｗ４域ｌ内に
扇状に設けたものである。Ｒｏｙ領域２の更新情報は、
同じトラシフ上のＲＡ Ｍ ｊ＋Ｊ［域１、および扇状
の外径や内径近傍のＲＡＭＱ域１に記憶するようにする
。Next, a second embodiment will be explained using FIGS. 3 and 4. In this embodiment, the ROM1Ji area 2 is provided in a fan shape within the RAM w4 area l. Update information for Roy area 2 is as follows:
It is stored in RAM j+J[area 1 on the same trasif and in RAMQ area 1 near the fan-shaped outer diameter and inner diameter.
例えば、第４図において、トラック番号５．セクタ番号
９の位置の情報が古くなってきたので更新する場合、ト
ラック番号５．セクタ番号８に最新の更新情報を書き込
む、これにより、第１実施例ではトラック番号の異なる
セクタに更新情報を書き込んでいたが、本実施例では同
一のトラックに更新情報が書き込めるため２シ一ク時間
が不用になり、第１実施例よりも高速にデータを転送す
ることができる。なお第３図に示す扇形は１７４円とな
っているが必要に応して１／３円とが、１／２円という
ように自由に変更できる。これは以降に述べる実施例で
も同様である。For example, in FIG. 4, track number 5. Since the information on the position of sector number 9 has become outdated, if you want to update it, track number 5. The latest update information is written to sector number 8. In this way, in the first embodiment, update information was written to sectors with different track numbers, but in this embodiment, update information can be written to the same track, so two sectors can be written at once. This saves time and allows data to be transferred faster than in the first embodiment. Although the fan shape shown in FIG. 3 is 174 yen, it can be freely changed from 1/3 yen to 1/2 yen, etc., if necessary. This also applies to the embodiments described below.
次に、第３実施例を第５図〜第７図を用いて説明する。Next, a third embodiment will be described using FIGS. 5 to 7.
第５図は第２実施例で示した扇状のＲＯＭｆｉ域２をＲ
ＡＭ卯域１を間にはさんで２箇所に配置したもので、こ
の２つの扇型は光ディスクの記憶配置を時計表示にみた
てると、９時〜１２時の間に設けられている。また第６
図は、外側のＲＯＭ領域２を６時〜９時の間に配置し、
内側のＲＯＭ領域２を９時〜１２時の間に配置している
。第７図は第６図を平面的に表し、トラックとセクタを
表示したものである。FIG. 5 shows the fan-shaped ROMfi area 2 shown in the second embodiment.
They are arranged in two places with AM area 1 in between, and if the storage arrangement of the optical disk is viewed as a clock display, these two fan-shaped areas are placed between 9 o'clock and 12 o'clock. Also the 6th
In the figure, the outer ROM area 2 is placed between 6 o'clock and 9 o'clock,
The inner ROM area 2 is arranged between 9 o'clock and 12 o'clock. FIG. 7 is a planar representation of FIG. 6, showing tracks and sectors.
第２実施例では、更新情報をＲＯＭ ＳＲ域２と同じト
ラックに記憶し、これに入りきれなくなった場合には扇
の外径または内径近傍のＲＡＭＳｉ域１のトランクに記
憶するが、これを容易にするため、本実施例はＲＯＭ
８ｉ域２を分割し、その間にＲＡＭ１域１を設けたもの
である。第６図に示したように２つの扇型の配置をずら
すと、内側のＲＯＭ紐域２から外側のＲＯＭ ｖＭＭＢ
２移る場合の回転待ち時間が少なくなる。In the second embodiment, the update information is stored in the same track as the ROM SR area 2, and when it cannot fit in this track, it is stored in the trunk of the RAM Si area 1 near the outer diameter or inner diameter of the fan, but this can be easily done. In order to
8i area 2 is divided and RAM 1 area 1 is provided between them. As shown in Figure 6, if the two fan-shaped arrangements are shifted, the inner ROM string area 2 will be moved from the outer ROM vMMB.
2. Rotation waiting time when moving is reduced.
次に第４実施例を第８図、第９図を用いて説明する。Next, a fourth embodiment will be explained using FIG. 8 and FIG. 9.
本実施例は円環状のＲＯＭ領域２と扇状のＲＯＭ ｔｉ
ｉ域２を接して配置したもので第１実施例と第３実施例
を組み合わせたものである。This embodiment has an annular ROM area 2 and a fan-shaped ROM ti
This is a combination of the first embodiment and the third embodiment, in which the i-area 2 is placed adjacent to each other.
本実施例の使い方の一例を説明すると、基本的な情報、
つまり更新する可能性の少ないデータは円環状のＲＯＭ
８１域２に記憶し、上位ソステムがこの情報をシステ
ム開始の初期の段階で唆い上げ、詳細情報を扇状のＲＯ
Ｍ領域２に記憶してユーザが検索をする時にその領域を
アクセスし、さらにその詳細情報を更新するときは、同
一トランクのＲＡＭ領域１の近い部分、または隣接する
トラックのＲＡＭ１ｉＪ域Ｉの近い部分に書き込むこと
が可能である。ＲｏＭＳｊ！域２に記憶する具体例とし
て地図情報を考えてみると、基本的な情報としては、日
本地形、幹線道路、鉄道等とし、詳細情報として、スー
パ、商店の場所５名前などが考えられる。To explain an example of how to use this embodiment, basic information,
In other words, data that is unlikely to be updated is stored in a circular ROM.
81 area 2, the upper level system picks up this information at the initial stage of system startup, and sends detailed information to the fan-shaped RO.
When storing data in M area 2 and accessing that area when the user searches and updating its detailed information, it is stored in a nearby part of RAM area 1 of the same trunk or a nearby part of RAM 1iJ area I of an adjacent track. It is possible to write to. RoMSj! Considering map information as a specific example to be stored in Area 2, the basic information may include Japanese topography, main roads, railways, etc., and the detailed information may include names of five locations such as a supermarket and a store.
次に第５実施例を第１０図、第１１図を用いて説明する
１本実施例は第４実施例を変形したもので、円環状ＲＯ
Ｍ領域２と扇状ＲＯＭ領域２との間にＲＡＭ領域１を設
け、各ＲＯＭｔＪｌ域２の近傍の更新情報記憶領域を増
加したものである。これにより更新領域へのシーク時間
が短縮される。Next, a fifth embodiment will be explained using FIGS. 10 and 11. This embodiment is a modification of the fourth embodiment, and has an annular RO
A RAM area 1 is provided between the M area 2 and the fan-shaped ROM area 2, and the update information storage area near each ROMtJl area 2 is increased. This reduces the seek time to the update area.
以上の実施例はＣＡ Ｖ （Ｃｏｎｓｔａｎｔ Ａｎｇ
ｕｌａｒ Ｖｅｌｏｃｉｔｙ：回転角一定）方式の配置
について説明したが、本発明はＣＬ Ｖ （Ｃｏｎｓｔ
ａｎｔ Ｌｉｎｅａｒ Ｖｅｌｏｃｉｔｙ：線速度一定
）方式およびＣＡＬ方式とＣＬＶ方式の混在の場合にも
成立する。The above embodiments are based on CA V (Constant Ang
Although the arrangement of the ular velocity (constant rotation angle) method has been described, the present invention is applicable to the CL V (Const
This also holds true in the case of a combination of ant Linear Velocity (constant linear velocity) method, CAL method, and CLV method.
発明の効果
以上の説明から明らかなように、本発明はＲＡＭ１域１
に円環状又は扇状のＲＯＭ領域２を設けることによりシ
ーク時間を少なくし、高速にデータを転送することを可
能とする。Effects of the Invention As is clear from the above explanation, the present invention
By providing an annular or fan-shaped ROM area 2, seek time can be reduced and data can be transferred at high speed.
第１図は本発明の第１実施例を示す配置図、第２図は第
１図を平面的に表現した図、第３図は第２実施例を示す
配置図、第４図は第３図を平面的に表現した図、第５図
、第６図はＪｊ実施例を示す配置図、第７図は第６図を
平面的に表現した図、第８図は第４実施例を示す配置図
、第９図は第８図を平面的に表現した図、第１０図は第
５実施例を示す配置図、第１１図は第１０図を平面的に
表現した図、第１２図は従来例の配置を示す図、第１３
図は第１２図を平面的に表現した図である。
１・・・・・・ＲＡＭ領域、２・・・・・・ＲＯＭ領域
。
代理人の氏名 弁理士 小鍜治 明 ばか２名第１＠
第３図
第４図
セクタ方向
第 ５ 図
第６図
第７図
セクタ方向
第８図
第 ９ 図
第１０図
第１１図
セクタ方向
第１２図
第１５１ｉ１1 is a layout diagram showing the first embodiment of the present invention, FIG. 2 is a planar representation of FIG. 1, FIG. 3 is a layout diagram showing the second embodiment, and FIG. 4 is a layout diagram showing the third embodiment. 5 and 6 are layout diagrams showing the Jj embodiment, FIG. 7 is a planar representation of FIG. 6, and FIG. 8 shows the fourth embodiment. 9 is a two-dimensional representation of FIG. 8, FIG. 10 is a layout diagram showing the fifth embodiment, FIG. 11 is a two-dimensional representation of FIG. 10, and FIG. 12 is a two-dimensional representation of FIG. Diagram showing the arrangement of the conventional example, No. 13
The figure is a planar representation of FIG. 12. 1...RAM area, 2...ROM area. Name of agent Patent attorney Akira Kodaka Two idiots No. 1 @ Fig. 3 Fig. 4 Sector direction Fig. 5 Fig. 6 Fig. 7 Sector direction Fig. 8 Fig. 9 Fig. 10 Fig. 11 Sector direction No. 12 Figure 151i1
Claims (7)
間に読み書き可能な領域を配置した複数の同心円環状の
読み出し専用記憶領域を設け、この読み出し専用記憶領
域の更新情報をこの読み出し専用記憶領域に隣接した前
記読み書き可能な記憶領域に記憶することを特徴とする
記憶媒体。(1) A plurality of concentric ring-shaped read-only storage areas are provided within a disk-shaped readable and writable storage area, and update information of the read-only storage areas is stored in this read-only storage. A storage medium characterized in that data is stored in the readable and writable storage area adjacent to the area.
の読み出し専用記憶領域を設け、この読み出し専用記憶
領域の更新情報をこの読み出し専用記憶領域の扇状を形
成する内外半径で囲まれる範囲内の前記読み書き可能な
記憶領域に記憶することを特徴とする記憶媒体。(2) A concentric fan-shaped read-only storage area is provided within a disk-shaped readable/writable storage area, and the update information of this read-only storage area is stored in an area surrounded by the inner and outer radii of the fan-shaped read-only storage area. A storage medium characterized by storing data in the readable and writable storage area of the storage medium.
前記読み書き可能な記憶領域にも前記読み出し専用記憶
領域の更新領域を設けたことを特徴とする請求項２記載
の記憶媒体。(3) The storage medium according to claim 2, wherein an update area of the read-only storage area is also provided in the read/write storage area outside the range surrounded by the inner and outer radii forming the fan shape.
に前記読み書き可能な記憶領域を配置して設けたことを
特徴とする請求項２または３記載の記憶媒体。(4) The storage medium according to claim 2 or 3, wherein the fan-shaped read-only storage area is provided with the readable and writable storage area arranged between each of the fan-shaped read-only storage areas.
の読み出し専用記憶領域を複数設け、これらの読み出し
専用記憶領域は互いに同一の半径内には存在しないよう
に配置し、前記それぞれの読み出し専用記憶領域の更新
情報を各々の読み出し専用記憶領域の扇状を形成する内
外半径で囲まれる範囲内の前記読み書き可能な記憶領域
に記憶することを特徴とする記憶媒体。(5) A plurality of concentric fan-shaped read-only storage areas are provided within a disk-shaped readable/writable storage area, and these read-only storage areas are arranged so that they do not exist within the same radius, and each of the above-mentioned A storage medium characterized in that update information of a read-only storage area is stored in the read/write storage area within a range surrounded by inner and outer radii forming a fan shape of each read-only storage area.
状および同心の扇状の読み出し専用記憶領域を設け、こ
の読み出し専用記憶領域の更新情報を前記円環状の読み
出し専用記憶領域の近傍の前記読み書き可能な記憶領域
および前記扇状の読み出し専用記憶領域の扇状を形成す
る内外半径で囲まれる範囲内の前記読み書き可能な記憶
領域に記憶することを特徴とする記憶媒体。(6) A concentric ring-shaped and a concentric fan-shaped read-only storage area are provided in the disk-shaped read/write storage area, and update information of the read-only storage area is stored in the vicinity of the circular read-only storage area. A storage medium characterized in that data is stored in the readable and writable storage area within a range surrounded by inner and outer radii forming a fan shape of the readable and writable storage area and the fan-shaped read-only storage area.
前記読み書き可能な記憶領域にも前記扇状の読み出し専
用記憶領域の更新領域を設けたことを特徴とする請求項
６記載の記憶媒体。(7) The storage medium according to claim 6, wherein an update area of the fan-shaped read-only storage area is also provided in the read/write storage area outside the range surrounded by the inner and outer radii forming the fan shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30364690A JPH04176059A (en) | 1990-11-07 | 1990-11-07 | Storage medium |
| US07/789,211 US5241531A (en) | 1990-11-07 | 1991-11-07 | Storage medium having read/write storage region and read-only storage region and a method for managing defective sectors in the storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30364690A JPH04176059A (en) | 1990-11-07 | 1990-11-07 | Storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04176059A true JPH04176059A (en) | 1992-06-23 |
Family
ID=17923509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30364690A Pending JPH04176059A (en) | 1990-11-07 | 1990-11-07 | Storage medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04176059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114328563A (en) * | 2021-12-31 | 2022-04-12 | 北京深演智能科技股份有限公司 | Data updating control method and device |
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|---|---|---|---|---|
| JPS6120271A (en) * | 1984-07-05 | 1986-01-29 | Matsushita Electric Ind Co Ltd | Information recording and reproducing device |
| JPS61158069A (en) * | 1984-12-28 | 1986-07-17 | Canon Inc | Recording system of information storage device |
| JPS61242371A (en) * | 1985-04-19 | 1986-10-28 | Canon Inc | Information recording and reproducing device |
| JPS61258371A (en) * | 1985-05-13 | 1986-11-15 | Hitachi Ltd | Recording medium of rotary disk device |
| JPS61280048A (en) * | 1985-06-05 | 1986-12-10 | Hitachi Ltd | Rewritable optical information carrier |
| JPS62137744A (en) * | 1985-12-11 | 1987-06-20 | Hitachi Ltd | Optical disk |
| JPS62184630A (en) * | 1986-02-07 | 1987-08-13 | Matsushita Electric Ind Co Ltd | Optical disk |
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| JPS6120271A (en) * | 1984-07-05 | 1986-01-29 | Matsushita Electric Ind Co Ltd | Information recording and reproducing device |
| JPS61158069A (en) * | 1984-12-28 | 1986-07-17 | Canon Inc | Recording system of information storage device |
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| CN114328563A (en) * | 2021-12-31 | 2022-04-12 | 北京深演智能科技股份有限公司 | Data updating control method and device |
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