JPS6460878A - Method for detecting reference position of head - Google Patents
Method for detecting reference position of headInfo
- Publication number
- JPS6460878A JPS6460878A JP21773287A JP21773287A JPS6460878A JP S6460878 A JPS6460878 A JP S6460878A JP 21773287 A JP21773287 A JP 21773287A JP 21773287 A JP21773287 A JP 21773287A JP S6460878 A JPS6460878 A JP S6460878A
- Authority
- JP
- Japan
- Prior art keywords
- head
- detected
- track
- reference position
- stepping motor
- 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
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Abstract
PURPOSE:To accurately move a head to a reference position in an error within a quantity of travel by one pulse of a stepping motor, by using a rotary position sensor and a home position sensor. CONSTITUTION:At the time of returning the head 42 from an arbitrary position to the reference position, a first detecting means (rotary position sensor) 64 which rotates the stepping motor 34 at every constant angle by a weak exciting pattern of one cycle which sets a prescribed excitation phase as reference discriminates whether or not it detects the part to be detected of a rotary member, and executes such operation repeatedly until the part to be detected is detected. Next, the stepping motor 34 is rotated at every constant rotation, and the head 42 is moved in the direction of the reference position track by track, and also, a second detecting means (home position sensor) 69 discriminates whether or not it detects the movement of the head 42 to a prescribed position at every movement of track, and executes such operation repeatedly until the movement to the prescribed position is detected. And the position of the head after that is set as the reference position. In such a way, it follows that the head 42 can be positioned at an arbitrary track on a recording medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21773287A JPS6460878A (en) | 1987-08-31 | 1987-08-31 | Method for detecting reference position of head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21773287A JPS6460878A (en) | 1987-08-31 | 1987-08-31 | Method for detecting reference position of head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6460878A true JPS6460878A (en) | 1989-03-07 |
Family
ID=16708877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21773287A Pending JPS6460878A (en) | 1987-08-31 | 1987-08-31 | Method for detecting reference position of head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6460878A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0428400U (en) * | 1990-06-30 | 1992-03-06 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS618781A (en) * | 1984-06-20 | 1986-01-16 | Mitsubishi Electric Corp | Head positioning device |
JPS61134976A (en) * | 1984-12-06 | 1986-06-23 | Canon Inc | Method for positioning head |
JPS61204875A (en) * | 1985-03-06 | 1986-09-10 | Matsushita Electric Ind Co Ltd | Recording and reproducing device |
-
1987
- 1987-08-31 JP JP21773287A patent/JPS6460878A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS618781A (en) * | 1984-06-20 | 1986-01-16 | Mitsubishi Electric Corp | Head positioning device |
JPS61134976A (en) * | 1984-12-06 | 1986-06-23 | Canon Inc | Method for positioning head |
JPS61204875A (en) * | 1985-03-06 | 1986-09-10 | Matsushita Electric Ind Co Ltd | Recording and reproducing device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0428400U (en) * | 1990-06-30 | 1992-03-06 |
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