JPS5465504A - Recording-reproducing system of information - Google Patents

Recording-reproducing system of information

Info

Publication number
JPS5465504A
JPS5465504A JP13156577A JP13156577A JPS5465504A JP S5465504 A JPS5465504 A JP S5465504A JP 13156577 A JP13156577 A JP 13156577A JP 13156577 A JP13156577 A JP 13156577A JP S5465504 A JPS5465504 A JP S5465504A
Authority
JP
Japan
Prior art keywords
track
recording
final track
final
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.)
Pending
Application number
JP13156577A
Other languages
Japanese (ja)
Inventor
Kimio Tateno
Takeshi Maeda
Seiji Yonezawa
Fumiyuki Inose
Kazuo Shigematsu
Keizo Kato
Toshimitsu Miyauchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13156577A priority Critical patent/JPS5465504A/en
Publication of JPS5465504A publication Critical patent/JPS5465504A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To perform writing of the next track while following the final track by moving a light beam for a specified distance based on the tracking signal of the final track having been stored at the recording.
CONSTITUTION: The tracking signal of the final track having been stored in a memory 6 is converted to an analog signal in a D/A converter 18 and the DC signal to deflect the beam by as much as the intertrack spacing is added by an adder 7 and is applied to a driver 12 via switch 13 to drive a galvanomirror 3. At this same instant, in order to start recording the increase in the laser output via switch 19 and the singal inputting from an information soruce 5 are accomplished by the instruction of a sequence control circuit 21, then a modulator 22 is driven via driver 26, whereby the recording of the next track of the final track is accomplished. thereby, writing of the next track may be performed while following the final track.
COPYRIGHT: (C)1979,JPO&Japio
JP13156577A 1977-11-04 1977-11-04 Recording-reproducing system of information Pending JPS5465504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13156577A JPS5465504A (en) 1977-11-04 1977-11-04 Recording-reproducing system of information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13156577A JPS5465504A (en) 1977-11-04 1977-11-04 Recording-reproducing system of information

Publications (1)

Publication Number Publication Date
JPS5465504A true JPS5465504A (en) 1979-05-26

Family

ID=15061026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13156577A Pending JPS5465504A (en) 1977-11-04 1977-11-04 Recording-reproducing system of information

Country Status (1)

Country Link
JP (1) JPS5465504A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567247A (en) * 1979-06-28 1981-01-24 Matsushita Electric Ind Co Ltd Information reproducing device
JPS5616946A (en) * 1979-07-18 1981-02-18 Matsushita Electric Ind Co Ltd Signal recording unit to information recording medium
JPS5753830A (en) * 1980-09-12 1982-03-31 Sony Corp Tracking servo device for optical information signal reproducer
JPS589226A (en) * 1981-07-07 1983-01-19 Toshiba Corp Optical disk device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567247A (en) * 1979-06-28 1981-01-24 Matsushita Electric Ind Co Ltd Information reproducing device
JPS5616946A (en) * 1979-07-18 1981-02-18 Matsushita Electric Ind Co Ltd Signal recording unit to information recording medium
JPS5753830A (en) * 1980-09-12 1982-03-31 Sony Corp Tracking servo device for optical information signal reproducer
JPS589226A (en) * 1981-07-07 1983-01-19 Toshiba Corp Optical disk device

Similar Documents

Publication Publication Date Title
EP0359541A3 (en) Optical-disk playback apparatus, method of optical-disk playback and combined memory medium
ATE58978T1 (en) SYSTEM FOR REPRODUCTION OF INFORMATION SIGNALS STORED ON A MAGNETIC TAPE.
JPS58101330U (en) Focus servo retraction device in optical equipment
JPS6437729A (en) Optical information recording and reproducing device
KR870006556A (en) Tracking Servo Control
JPS5313309A (en) Optically reproducing unit
JPS5465504A (en) Recording-reproducing system of information
KR860004402A (en) Magnetic Head Control System of Magnetic Disk Device by Index Servo System
JPS55113197A (en) Optical memory unit
CA2177546A1 (en) Tracking Method and Device for Use with an Optical Recording Medium
JPS5285412A (en) Optical record regenerative device
JPS567247A (en) Information reproducing device
EP0395403A3 (en) Optical information recording/ reproducing apparatus comprising digital servo device for performing focusing and/or tracking of optical head based on digital information
JPS54155007A (en) Information recorder
JPS56124168A (en) Device for reproducing information
JPS5738191A (en) Recording method
JPS6443849A (en) Medium driving system for optical recording/reproducing device
EP0402081A3 (en) Optical data recording and reproducing apparatus
JPS57186249A (en) Automatic jump system
JPS57181432A (en) Optical type disc reproducer
JPS5276003A (en) Optical information recording system
JPS5771133A (en) Radiation by electron beam
JPS5465503A (en) Information recorder-reproducer
JPS6442081A (en) Digital servo speed control system
JPS5362502A (en) Optical recording-reproducing apparatus