JPS6427084A - Track access method for information recording and reproducing device - Google Patents
Track access method for information recording and reproducing deviceInfo
- Publication number
- JPS6427084A JPS6427084A JP18231487A JP18231487A JPS6427084A JP S6427084 A JPS6427084 A JP S6427084A JP 18231487 A JP18231487 A JP 18231487A JP 18231487 A JP18231487 A JP 18231487A JP S6427084 A JPS6427084 A JP S6427084A
- Authority
- JP
- Japan
- Prior art keywords
- track
- detected
- signal
- counting
- optical
- 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 make track counting correct and to speedily and stably execute an access to a desired information track by masking a detecting signal in an area between the tracks in which an optical head crosses. CONSTITUTION:In the condition of stopping an optical card 1, an optical head 18 is moved, reflected light from an optical beam spot is detected by an optical detector 23, the number of tracking tracks is calculated, and a speed signal is detected and formed 71 based on a light quantity signal from the detector 23. At an MPU 10, when a first track crossing is detected, a mask signal is outputted in the area between the tracks from a memory 76 based on the detecting speed. A counting is executed based on the mask signal, a correct crossing track number is seeked, and the track number is detected by counting this. As this result, the access to the information track to be aimed is executed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18231487A JPS6427084A (en) | 1987-07-23 | 1987-07-23 | Track access method for information recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18231487A JPS6427084A (en) | 1987-07-23 | 1987-07-23 | Track access method for information recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6427084A true JPS6427084A (en) | 1989-01-30 |
Family
ID=16116137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18231487A Pending JPS6427084A (en) | 1987-07-23 | 1987-07-23 | Track access method for information recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6427084A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0538025A2 (en) * | 1991-10-18 | 1993-04-21 | International Business Machines Corporation | Disk drive |
-
1987
- 1987-07-23 JP JP18231487A patent/JPS6427084A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0538025A2 (en) * | 1991-10-18 | 1993-04-21 | International Business Machines Corporation | Disk drive |
US5426625A (en) * | 1991-10-18 | 1995-06-20 | International Business Machines Corporation | Masking of tracking error signal abnormalities due to media defects |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MY127657A (en) | Optical recording medium, method for recording /reproducing the optical recording medium and apparatus for recording/reproducing the optical recording medium | |
KR910001661A (en) | Optical Disc Device | |
ATE117454T1 (en) | METHOD AND DEVICE FOR CONTROLLING AND DETECTING A RECORDING LASER. | |
ATE86043T1 (en) | TRACKING SYSTEMS FOR OPTICAL DISC PLAYERS. | |
JPS5345506A (en) | Information detecting apparatus | |
DE3279157D1 (en) | Storage medium track pitch detector | |
JPS6467776A (en) | Disk device | |
EP0372953A3 (en) | Method of, and apparatus for detecting access speed for a disc player | |
JPS6467775A (en) | Disk device | |
JPS6427084A (en) | Track access method for information recording and reproducing device | |
ATE122173T1 (en) | OPTICAL RECORDING AND PLAYBACK SYSTEM WITH DUAL LIGHT SOURCE. | |
JPS5764337A (en) | Track retrieval device | |
ATE207649T1 (en) | OPTICAL SEARCH METHOD AND DEVICE | |
JPS5764334A (en) | Optical information recording system | |
JPS60171637A (en) | Circuit for counting number of traversed track | |
JPS57164447A (en) | Position detecting device | |
JPS5764336A (en) | Track signal recording system of optical disk device | |
JPS55157133A (en) | Information recording and reproducing device | |
JPS53149301A (en) | Optical recorder-reproducer | |
JPS54130004A (en) | Cylinder position detecting method of magnetic disc apparatus | |
JPS57103138A (en) | Inspecting method for recording medium | |
JPS6449145A (en) | Optical recording medium and reading method thereof | |
JPS57212647A (en) | Method and device for recording and reproducing signal | |
JPS6472331A (en) | Optical disk recording and reproducing device | |
EP0397541A3 (en) | Track access system for magnetooptical reading and recording apparatus |