JPH0164136U - - Google Patents
Info
- Publication number
- JPH0164136U JPH0164136U JP1987157703U JP15770387U JPH0164136U JP H0164136 U JPH0164136 U JP H0164136U JP 1987157703 U JP1987157703 U JP 1987157703U JP 15770387 U JP15770387 U JP 15770387U JP H0164136 U JPH0164136 U JP H0164136U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- control device
- access
- disk device
- disk control
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図はこの考案の一実施例による磁気デイス
ク装置を示す概念図、第２図は第１図の装置でア
クセスできる領域とアクセス禁止信号との関係を
示した表、第３図は従来の磁気デイスク装置を示
す概念図である。
図中、１は磁気デイスク制御装置、２は書き込
み／読み出し制御回路、３は磁気デイスク装置、
４はユーザトラツク領域、５は制御信号、６はア
クセス禁止回路、７ａはシステムトラツク領域ア
クセス禁止信号、７ｂはユーザトラツク領域アク
セス禁止信号、８はシステムトラツク領域である
。なお、図中、同一符号は同一、又は相当部分を
示す。
FIG. 1 is a conceptual diagram showing a magnetic disk device according to an embodiment of the invention, FIG. 2 is a table showing the relationship between areas that can be accessed by the device of FIG. 1 and access prohibition signals, and FIG. 1 is a conceptual diagram showing a magnetic disk device. In the figure, 1 is a magnetic disk control device, 2 is a write/read control circuit, 3 is a magnetic disk device,
4 is a user track area, 5 is a control signal, 6 is an access prohibition circuit, 7a is a system track area access prohibition signal, 7b is a user track area access prohibition signal, and 8 is a system track area. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
データを書き込み、読み出しする磁気デイスク装
置において、磁気記録媒体上の特定範囲に対する
該磁気デイスク制御装置からのアクセスを禁止す
る機能を備えた磁気デイスク装置。 A magnetic disk device that writes and reads data in accordance with access from a magnetic disk control device, the magnetic disk device having a function of prohibiting access from the magnetic disk control device to a specific range on a magnetic recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157703U JPH0164136U (en) | 1987-10-15 | 1987-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157703U JPH0164136U (en) | 1987-10-15 | 1987-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164136U true JPH0164136U (en) | 1989-04-25 |
Family
ID=31437380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987157703U Pending JPH0164136U (en) | 1987-10-15 | 1987-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164136U (en) |
-
1987
- 1987-10-15 JP JP1987157703U patent/JPH0164136U/ja active Pending
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