JPH0166604U - - Google Patents
Info
- Publication number
- JPH0166604U JPH0166604U JP1987163221U JP16322187U JPH0166604U JP H0166604 U JPH0166604 U JP H0166604U JP 1987163221 U JP1987163221 U JP 1987163221U JP 16322187 U JP16322187 U JP 16322187U JP H0166604 U JPH0166604 U JP H0166604U
- Authority
- JP
- Japan
- Prior art keywords
- mode
- read
- write
- switching
- head
- 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
- Digital Magnetic Recording (AREA)
Description
第１図はこの考案の一実施例の回路構成を示す
ブロツク線図、第２図はこの実施例における各信
号波形を示すタイミングチヤート、第３図は従来
の磁気デイスク装置の回路構成を示すブロツク線
図、第４図は第３図の各信号波形を示すタイミン
グチヤートである。
図において、１はヘツド、２はヘツド駆動手段
（ヘツドＩＣ）、５は自動利得制御増幅器（ＡＧ
Ｃアンプ）、８はモード切換遅延手段（遅延回路
）である。なお、図中同一符号は同一或は相当部
分を示す。
FIG. 1 is a block diagram showing the circuit configuration of an embodiment of this invention, FIG. 2 is a timing chart showing each signal waveform in this embodiment, and FIG. 3 is a block diagram showing the circuit configuration of a conventional magnetic disk device. 4 is a timing chart showing each signal waveform of FIG. 3. In the figure, 1 is a head, 2 is a head driving means (head IC), and 5 is an automatic gain control amplifier (AG).
C amplifier), 8 is a mode switching delay means (delay circuit). Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
与えられた読出し書込み切換信号、指令信号に応
じて、上記ヘツドに読出し書込み動作を行なわせ
るヘツド駆動手段と、書込みモードと読出しモー
ドに切換えられる自動利得制御増幅器（ＡＧＣア
ンプ）とを備えた磁気デイスク装置において、上
記ヘツド駆動手段が外部から与えられた読出し書
込み切換信号に応じて書込みモードから読出しモ
ードに切換わつた時点から所定の時間が経過した
後に上記自動利得制御増幅器（ＡＧＣアンプ）を
書込みモードから読出しモードに切換えるモード
切換遅延手段を設けたことを特徴とする磁気デイ
スク装置。 A head for recording and reproducing data, a head driving means for causing the head to perform read and write operations in response to externally applied read/write switching signals and command signals, and automatic gain control for switching between write mode and read mode. In a magnetic disk device equipped with an amplifier (AGC amplifier), the above-described operation is performed after a predetermined period of time has elapsed from the time when the head driving means switches from the write mode to the read mode in response to a read/write switching signal applied from the outside. A magnetic disk device comprising a mode switching delay means for switching an automatic gain control amplifier (AGC amplifier) from a write mode to a read mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163221U JPH0166604U (en) | 1987-10-26 | 1987-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163221U JPH0166604U (en) | 1987-10-26 | 1987-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0166604U true JPH0166604U (en) | 1989-04-28 |
Family
ID=31447752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987163221U Pending JPH0166604U (en) | 1987-10-26 | 1987-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0166604U (en) |
-
1987
- 1987-10-26 JP JP1987163221U patent/JPH0166604U/ja active Pending
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