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JPS6423426A - Optical medium recording device - Google Patents

Optical medium recording device

Info

Publication number
JPS6423426A
JPS6423426A JP62180478A JP18047887A JPS6423426A JP S6423426 A JPS6423426 A JP S6423426A JP 62180478 A JP62180478 A JP 62180478A JP 18047887 A JP18047887 A JP 18047887A JP S6423426 A JPS6423426 A JP S6423426A
Authority
JP
Japan
Prior art keywords
correction
current
trailing
generate
pulse
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
Application number
JP62180478A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kimoto
Giichi Aoki
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.)
Nikon Corp
Original Assignee
Nikon Corp
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 Nikon Corp filed Critical Nikon Corp
Priority to JP62180478A priority Critical patent/JPS6423426A/en
Publication of JPS6423426A publication Critical patent/JPS6423426A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To form a correct and large pit without causing a hindrance to the automatic tracking and automatic focusing by preventing the laser power from being lost completely at the leading correction period. CONSTITUTION:A recording pulse current generating circuit 1 receives a recording signal to generate a usual recording pulse current (b). Pulse edge detection circuits 2, 4 detect respectively the leading and trailing of the recording signal to generate a trigger signal (c). Correction pulse current generating circuits 3, 5 receive trigger signals c, e to generate correction pulses d, f of one bit length in both the polarities. The laser diode is driven by a current being the sum of the current (b), the correction pulse currents d, f and a DC bias current (g). On the other hand, a trailing setting circuit 11 decreases the power from the usual level in the trailing correction period but not made to zero so as to be a level or over by the control of the circuit 5.
JP62180478A 1987-07-20 1987-07-20 Optical medium recording device Pending JPS6423426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62180478A JPS6423426A (en) 1987-07-20 1987-07-20 Optical medium recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62180478A JPS6423426A (en) 1987-07-20 1987-07-20 Optical medium recording device

Publications (1)

Publication Number Publication Date
JPS6423426A true JPS6423426A (en) 1989-01-26

Family

ID=16083923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62180478A Pending JPS6423426A (en) 1987-07-20 1987-07-20 Optical medium recording device

Country Status (1)

Country Link
JP (1) JPS6423426A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH027231A (en) * 1988-06-27 1990-01-11 Hitachi Ltd Information recording method
JPH05143998A (en) * 1991-11-25 1993-06-11 Fujitsu General Ltd Driving circuit for optical disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH027231A (en) * 1988-06-27 1990-01-11 Hitachi Ltd Information recording method
JPH05143998A (en) * 1991-11-25 1993-06-11 Fujitsu General Ltd Driving circuit for optical disk device

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