JPS61126467U - - Google Patents
Info
- Publication number
- JPS61126467U JPS61126467U JP878585U JP878585U JPS61126467U JP S61126467 U JPS61126467 U JP S61126467U JP 878585 U JP878585 U JP 878585U JP 878585 U JP878585 U JP 878585U JP S61126467 U JPS61126467 U JP S61126467U
- Authority
- JP
- Japan
- Prior art keywords
- disk device
- track
- information storage
- storage circuit
- magnetic disk
- 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
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図は、本考案による磁気デイスク装置にお
ける情報記憶手段の一実施例を示すブロツク図で
ある。第２図は、第１図における書込み電流制御
手段の一実施例を示すブロツク図を、説明図と共
に記載したものである。第３図は、第１図におけ
る書込みの禁止信号を修飾する論理例を示す論理
図である。
１…アドレスバツフア回路、２…情報記憶回路
、３…出力バツフア回路、８…定電流源、９，１
０…アナログスイツチ、１１…磁気ヘツド、１８
…ＡＮＤゲート、１９…ＯＲゲート、４〜７，１
２〜１７…信号線。
FIG. 1 is a block diagram showing an embodiment of information storage means in a magnetic disk device according to the present invention. FIG. 2 is a block diagram showing one embodiment of the write current control means in FIG. 1, together with explanatory diagrams. FIG. 3 is a logic diagram showing a logic example for modifying the write inhibit signal in FIG. 1. DESCRIPTION OF SYMBOLS 1... Address buffer circuit, 2... Information storage circuit, 3... Output buffer circuit, 8... Constant current source, 9, 1
0...Analog switch, 11...Magnetic head, 18
...AND gate, 19...OR gate, 4 to 7, 1
2 to 17...Signal line.
Claims (1)
気デイスク装置のトラツクごとに、任意に設定さ
れる制御情報を格納するための情報記憶回路と、
前記情報記憶回路からの制御情報により前記デイ
スク装置への書込み電流を前記トラツクごとに制
御するための複数のアナログスイツチと、前記ト
ラツクごとに前記デイスク装置への書込みを禁止
してデータを保護するためのゲートとを具備して
構成した磁気デイスク装置。 an information storage circuit for storing control information arbitrarily set for each track of a magnetic disk device having a plurality of tracks assigned addresses;
a plurality of analog switches for controlling write current to the disk device for each track based on control information from the information storage circuit; and for protecting data by inhibiting writing to the disk device for each track. A magnetic disk device comprising a gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP878585U JPS61126467U (en) | 1985-01-25 | 1985-01-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP878585U JPS61126467U (en) | 1985-01-25 | 1985-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61126467U true JPS61126467U (en) | 1986-08-08 |
Family
ID=30488393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP878585U Pending JPS61126467U (en) | 1985-01-25 | 1985-01-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61126467U (en) |
-
1985
- 1985-01-25 JP JP878585U patent/JPS61126467U/ja active Pending
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