JPS6457425A - Optical disk - Google Patents

Optical disk

Info

Publication number
JPS6457425A
JPS6457425A JP62215685A JP21568587A JPS6457425A JP S6457425 A JPS6457425 A JP S6457425A JP 62215685 A JP62215685 A JP 62215685A JP 21568587 A JP21568587 A JP 21568587A JP S6457425 A JPS6457425 A JP S6457425A
Authority
JP
Japan
Prior art keywords
track
crosstalk
disk
tracks
signal
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
JP62215685A
Other languages
Japanese (ja)
Other versions
JP2650267B2 (en
Inventor
Tetsuo Hosomi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62215685A priority Critical patent/JP2650267B2/en
Publication of JPS6457425A publication Critical patent/JPS6457425A/en
Application granted granted Critical
Publication of JP2650267B2 publication Critical patent/JP2650267B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To eliminate the danger to cause malfunction and to attain the stable tilt correction by recording a constant pattern in a sample shape on a disk track, and detecting a crosstalk signal level from an adjoining track. CONSTITUTION:On a disk 5, tracks ABC including an intermittent pattern 4 for detecting a tilt exists, an optical beam is focused onto the track A on a disk and the reflected optical beam is made incident on a detector 7. By the detector 7, besides this, the signal by a crosstalk from the track B and the track C is reproduced. The signal due to the crosstalk from the tracks B and C is amplified by an amplifying circuit 8, converted to the output in accordance with the signal level reproduced from respective tracks with a frequency discriminating circuit 9 and a servo action is executed so that a crosstalk quantity from the track B and the crosstalk quantity from the track A can be equal. Thus, the generation of malfunction is eliminated and a stable tilt correction can be executed.
JP62215685A 1987-08-28 1987-08-28 optical disk Expired - Lifetime JP2650267B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215685A JP2650267B2 (en) 1987-08-28 1987-08-28 optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215685A JP2650267B2 (en) 1987-08-28 1987-08-28 optical disk

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6102608A Division JP2626550B2 (en) 1994-05-17 1994-05-17 Optical disk drive

Publications (2)

Publication Number Publication Date
JPS6457425A true JPS6457425A (en) 1989-03-03
JP2650267B2 JP2650267B2 (en) 1997-09-03

Family

ID=16676462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215685A Expired - Lifetime JP2650267B2 (en) 1987-08-28 1987-08-28 optical disk

Country Status (1)

Country Link
JP (1) JP2650267B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489661A (en) * 1990-07-26 1992-03-23 Matsushita Electric Ind Co Ltd Signal recording and reproducing device
EP0492889A2 (en) * 1990-12-18 1992-07-01 Pioneer Electronic Corporation Crosstalk quantity detector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952341A (en) * 1982-09-16 1984-03-26 Mitsubishi Electric Corp Data coding system
JPS5968814A (en) * 1982-10-12 1984-04-18 Fuji Photo Film Co Ltd Tracking servo system in reproducing system of video signal
JPS60177448A (en) * 1984-02-22 1985-09-11 Toshiba Corp Disk for signal adjusting
JPS61120323A (en) * 1984-11-14 1986-06-07 Sony Corp Recording system of digital signal
JPS61126635A (en) * 1984-11-21 1986-06-14 Nec Home Electronics Ltd Optical memory disc
JPS61214681A (en) * 1985-03-20 1986-09-24 Sony Corp Terminal equipment for video tex with japanese language sentence generating means
JPS6453361A (en) * 1987-08-24 1989-03-01 Nikon Corp Disk medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952341A (en) * 1982-09-16 1984-03-26 Mitsubishi Electric Corp Data coding system
JPS5968814A (en) * 1982-10-12 1984-04-18 Fuji Photo Film Co Ltd Tracking servo system in reproducing system of video signal
JPS60177448A (en) * 1984-02-22 1985-09-11 Toshiba Corp Disk for signal adjusting
JPS61120323A (en) * 1984-11-14 1986-06-07 Sony Corp Recording system of digital signal
JPS61126635A (en) * 1984-11-21 1986-06-14 Nec Home Electronics Ltd Optical memory disc
JPS61214681A (en) * 1985-03-20 1986-09-24 Sony Corp Terminal equipment for video tex with japanese language sentence generating means
JPS6453361A (en) * 1987-08-24 1989-03-01 Nikon Corp Disk medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489661A (en) * 1990-07-26 1992-03-23 Matsushita Electric Ind Co Ltd Signal recording and reproducing device
EP0492889A2 (en) * 1990-12-18 1992-07-01 Pioneer Electronic Corporation Crosstalk quantity detector

Also Published As

Publication number Publication date
JP2650267B2 (en) 1997-09-03

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