JPH0454084U - - Google Patents
Info
- Publication number
- JPH0454084U JPH0454084U JP9275690U JP9275690U JPH0454084U JP H0454084 U JPH0454084 U JP H0454084U JP 9275690 U JP9275690 U JP 9275690U JP 9275690 U JP9275690 U JP 9275690U JP H0454084 U JPH0454084 U JP H0454084U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- management information
- access
- address
- data
- 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
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図と第３図は第一の実施例における光デイスクの
データ配置を示した説明図及び管理情報領域を判
定するために必要なデータを示した説明図、第４
図はフアイルアクセスを受けた光デイスク装置の
ＣＰＵが行う処理を示したフローチヤート、第５
図と第６図は第二の実施例における光デイスクの
データ配置を示した説明図及びアドレス変換テー
ブルを示した説明図、第７図は第三の実施例にお
けるＲＡＭ上に展開された管理情報を示した説明
図である。
１……光デイスク装置、１０……光デイスクド
ライブ、１１……ドライブインタフエース、１２
……ＣＰＵ、１３……ＲＡＭ、１４……ＲＯＭ、
１５……ホストインタフエース、２……ホストコ
ンピユータ、２１……ＣＰＵ、２２……光デイス
クインタフエース。
Fig. 1 is a block diagram of an embodiment of the present invention;
FIG. 3 is an explanatory diagram showing the data arrangement of the optical disk in the first embodiment, an explanatory diagram showing the data necessary for determining the management information area, and FIG.
The figure is a flowchart showing the processing performed by the CPU of the optical disk device that receives file access.
Figure 6 is an explanatory diagram showing the data arrangement of the optical disk in the second embodiment and an explanatory diagram showing the address conversion table, and Fig. 7 is the management information developed on the RAM in the third embodiment. FIG. 1... Optical disk device, 10... Optical disk drive, 11... Drive interface, 12
...CPU, 13...RAM, 14...ROM,
15...Host interface, 2...Host computer, 21...CPU, 22...Optical disk interface.
Claims (1)
管理情報とを記録した光デイスクを使用する光デ
イスク装置において、 前記管理情報を前記光デイスクより読み出して
保持しておくための高速記憶手段と、前記光デイ
スクへのアクセスが発生したとき前記アクセスが
前記管理情報の記憶領域に対するものであるかど
うかを判定するアクセス判定手段と、前記アクセ
ス判定手段により前記管理情報領域へのアクセス
が検出された場合、前記光デイスクに対するアド
レスを前記高速記憶手段に既転送の同一情報に対
するアドレスに変換するアドレス変換手段とを備
え、 予め前記光デイスク上の前記管理情報を前記高
速記憶手段に転送し、前記管理情報に対するアク
セスが発生した場合、実際に光デイスクから読み
出すことなく、前記高速記録手段に記憶された同
一情報を読み出すことを特徴とする光デイスク装
置。[Claims for Utility Model Registration] In an optical disk device that uses an optical disk on which data and management information for searching and managing the data are recorded, the management information is read from the optical disk and retained. access determination means for determining whether or not the access is to the management information storage area when the access to the optical disk occurs; address conversion means for converting an address for the optical disk into an address for the same information already transferred to the high-speed storage means, when an access to the optical disk is detected; An optical disk device characterized in that when the management information is accessed, the same information stored in the high-speed recording means is read out without actually reading it from the optical disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9275690U JPH0454084U (en) | 1990-09-05 | 1990-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9275690U JPH0454084U (en) | 1990-09-05 | 1990-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454084U true JPH0454084U (en) | 1992-05-08 |
Family
ID=31829457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9275690U Pending JPH0454084U (en) | 1990-09-05 | 1990-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454084U (en) |
-
1990
- 1990-09-05 JP JP9275690U patent/JPH0454084U/ja active Pending
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