JPS6186864U - - Google Patents
Info
- Publication number
- JPS6186864U JPS6186864U JP16940084U JP16940084U JPS6186864U JP S6186864 U JPS6186864 U JP S6186864U JP 16940084 U JP16940084 U JP 16940084U JP 16940084 U JP16940084 U JP 16940084U JP S6186864 U JPS6186864 U JP S6186864U
- Authority
- JP
- Japan
- Prior art keywords
- head
- difference
- positioning control
- circuit
- utility
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Description
第１図は本考案によるヘツドの位置決め制御装
置の一実施例を示すブロツク図、第２図は送り方
向検出のための波形図、第３図は目標位置へのア
クセス時の動作波形図、第４図は臨界制御時の動
作波形図である。
１…ヘツド、２…ヘツド送り装置、３…位置検
出装置、４…方向検出装置、５…目標入力回路、
６…演算回路、７…駆動回路、８…極点検出回路
、９…判定回路、１０…速度検出回路、１１…許
容値入力回路。
Fig. 1 is a block diagram showing an embodiment of the head positioning control device according to the present invention, Fig. 2 is a waveform diagram for detecting the feeding direction, Fig. 3 is an operational waveform diagram when accessing the target position, FIG. 4 is an operational waveform diagram during critical control. DESCRIPTION OF SYMBOLS 1...Head, 2...Head feeding device, 3...Position detection device, 4...Direction detection device, 5...Target input circuit,
6... Arithmetic circuit, 7... Drive circuit, 8... Pole detection circuit, 9... Judgment circuit, 10... Speed detection circuit, 11... Allowable value input circuit.
Claims (1)
ドの現在位置との差を検出し、この差が零となる
方向に駆動回路からの信号で移動して目標位置へ
アクセスする装置において、目標位置に対する許
容値を入力するための許容値入力回路と、前記目
標位置と現在位置との差の信号が許容値入力回路
の許容値以内であるときアクセス終了信号を駆動
回路へ出力する判定回路とを具備してなることを
特徴とするヘツドの位置決め制御装置。 (2) 実用新案登録請求の範囲第１項記載におい
て、ヘツドの現在位置と目標位置との差は極点検
出回路で検出されたヘツド極点位置のタイミング
をもつて判断するようにしたヘツドの位置決め制
御装置。 (3) 実用新案登録請求の範囲第２項記載におい
て、ヘツドの送り速度が一定以下になつたときの
タイミングをさらに付加した時点で判断するよう
にしたヘツドの位置決め制御装置。[Claims for Utility Model Registration] (1) Detect the difference between the input target movement position of the head and the current position of the head, and move in the direction where this difference becomes zero using a signal from the drive circuit to move to the target position. A device for accessing a position includes a tolerance input circuit for inputting a tolerance value for a target position, and an access end signal when a signal of a difference between the target position and the current position is within a tolerance value of the tolerance input circuit. 1. A head positioning control device comprising: a determination circuit that outputs an output to a drive circuit. (2) The head positioning control described in paragraph 1 of the claims for utility model registration, wherein the difference between the current position of the head and the target position is determined based on the timing of the head pole position detected by the pole detection circuit. Device. (3) The head positioning control device as set forth in claim 2 of the utility model registration, wherein the head positioning control device is configured to make the determination at the additional timing when the head feed speed becomes below a certain level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16940084U JPS6186864U (en) | 1984-11-08 | 1984-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16940084U JPS6186864U (en) | 1984-11-08 | 1984-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6186864U true JPS6186864U (en) | 1986-06-06 |
Family
ID=30727138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16940084U Pending JPS6186864U (en) | 1984-11-08 | 1984-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6186864U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538662A (en) * | 1978-09-09 | 1980-03-18 | Pioneer Video Corp | Tracking servo-drawing-in unit of optical information reader |
| JPS5760541A (en) * | 1980-09-30 | 1982-04-12 | Fujitsu Ltd | Optical disc reproducer |
-
1984
- 1984-11-08 JP JP16940084U patent/JPS6186864U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538662A (en) * | 1978-09-09 | 1980-03-18 | Pioneer Video Corp | Tracking servo-drawing-in unit of optical information reader |
| JPS5760541A (en) * | 1980-09-30 | 1982-04-12 | Fujitsu Ltd | Optical disc reproducer |
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