JPS6443849A - Medium driving system for optical recording/reproducing device - Google Patents
Medium driving system for optical recording/reproducing deviceInfo
- Publication number
- JPS6443849A JPS6443849A JP20029887A JP20029887A JPS6443849A JP S6443849 A JPS6443849 A JP S6443849A JP 20029887 A JP20029887 A JP 20029887A JP 20029887 A JP20029887 A JP 20029887A JP S6443849 A JPS6443849 A JP S6443849A
- Authority
- JP
- Japan
- Prior art keywords
- control
- mpu
- switch
- recording
- constant speed
- 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.)
- Granted
Links
Abstract
PURPOSE:To remove the restriction of a recording area due to the variation of the starting position of a card end by performing constant speed control in a range where a light beam scans an information recording part, and changing it into position control in the track stopping/reversing part of a recording medium. CONSTITUTION:While recording or reproducing is performed as a card A being in a constant speed state, an MPU 10 instructs a polarity conversion circuit 11 so that the time constant of a frequency/voltage converter 3 and the gain of an amplifier 4 come to be prescribed values. At that time, a switch SW1 is being turned on and a driver 12 is operated by the loop of the constant speed control. Next, when information is outputted to the MPU 10, the MPU 10 turns on the switch SW4, and turns off the switch SW1, and changes the control into a position servo. Then, the recording area can be expanded by setting previously the terminal point of a track at high precision by the control by the position servo.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200298A JPH0754607B2 (en) | 1987-08-11 | 1987-08-11 | Optical recording / reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200298A JPH0754607B2 (en) | 1987-08-11 | 1987-08-11 | Optical recording / reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6443849A true JPS6443849A (en) | 1989-02-16 |
JPH0754607B2 JPH0754607B2 (en) | 1995-06-07 |
Family
ID=16421991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62200298A Expired - Fee Related JPH0754607B2 (en) | 1987-08-11 | 1987-08-11 | Optical recording / reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0754607B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01227265A (en) * | 1988-03-07 | 1989-09-11 | Matsushita Electric Ind Co Ltd | Recording medium transfer device |
JPH02154364A (en) * | 1988-12-06 | 1990-06-13 | Olympus Optical Co Ltd | Optical card device |
US5380996A (en) * | 1992-07-10 | 1995-01-10 | Olympus Optical Co., Ltd. | Optical card recording/regenerating method and apparatus for driving optical card with respect to optical head so as to increase or decrease relative speed in at least one of ID divisions of optical card |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5512504A (en) * | 1978-07-07 | 1980-01-29 | Sony Corp | Magnetic card unit |
JPS61146058U (en) * | 1985-02-28 | 1986-09-09 | ||
JPS629959A (en) * | 1985-07-09 | 1987-01-17 | Fujitsu Ltd | Bit pattern conversion system |
-
1987
- 1987-08-11 JP JP62200298A patent/JPH0754607B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5512504A (en) * | 1978-07-07 | 1980-01-29 | Sony Corp | Magnetic card unit |
JPS61146058U (en) * | 1985-02-28 | 1986-09-09 | ||
JPS629959A (en) * | 1985-07-09 | 1987-01-17 | Fujitsu Ltd | Bit pattern conversion system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01227265A (en) * | 1988-03-07 | 1989-09-11 | Matsushita Electric Ind Co Ltd | Recording medium transfer device |
JPH02154364A (en) * | 1988-12-06 | 1990-06-13 | Olympus Optical Co Ltd | Optical card device |
US5380996A (en) * | 1992-07-10 | 1995-01-10 | Olympus Optical Co., Ltd. | Optical card recording/regenerating method and apparatus for driving optical card with respect to optical head so as to increase or decrease relative speed in at least one of ID divisions of optical card |
Also Published As
Publication number | Publication date |
---|---|
JPH0754607B2 (en) | 1995-06-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |