JPS6443849A - Medium driving system for optical recording/reproducing device - Google Patents

Medium driving system for optical recording/reproducing device

Info

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
Application number
JP20029887A
Other languages
Japanese (ja)
Other versions
JPH0754607B2 (en
Inventor
Hiroshi Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP62200298A priority Critical patent/JPH0754607B2/en
Publication of JPS6443849A publication Critical patent/JPS6443849A/en
Publication of JPH0754607B2 publication Critical patent/JPH0754607B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP62200298A 1987-08-11 1987-08-11 Optical recording / reproducing device Expired - Fee Related JPH0754607B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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