JPS6413255A - Disk discriminating method - Google Patents

Disk discriminating method

Info

Publication number
JPS6413255A
JPS6413255A JP16936587A JP16936587A JPS6413255A JP S6413255 A JPS6413255 A JP S6413255A JP 16936587 A JP16936587 A JP 16936587A JP 16936587 A JP16936587 A JP 16936587A JP S6413255 A JPS6413255 A JP S6413255A
Authority
JP
Japan
Prior art keywords
disk
revolution
pickup
decided
outputted
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
JP16936587A
Other languages
Japanese (ja)
Inventor
Hiroaki Tsuboi
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP16936587A priority Critical patent/JPS6413255A/en
Publication of JPS6413255A publication Critical patent/JPS6413255A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To discriminate the kind of a disk in a short time by detecting the presence of the disk by focus servo, and in addition, detecting the number of revolutions, after shifting an optical pickup to the position of the minimum diameter. CONSTITUTION:On an instruction from the key of an operation part 20, a slider servo amplifier 10 sends a drive signal through a system controller 5, and makes the pickup 6 move from the innermost periphery to the outer periphery of the disk 1. A detection signal is outputted from a position detector 19, and the pickup 6 stops at a prescribed position. Next, a focus servo circuit 8 is operated, and when a lock detection signal is outputted, a selector switch 16 controls the revolution of a spindle motor 2 through a spindle drive circuit 18. Besides, the number of revolution Nx of the spindle motor 2 is detected according to the output data of a counter 4. If the number of revolution Nx is smaller than a prescribed value, it is decided that an 8 inch LV is loaded, and its conditions is indicated on an indication part 21, and if larger than the prescribed value, it is decided that a 12 inch LV is loaded, and the discrimination of the disk is facilitated.
JP16936587A 1987-07-07 1987-07-07 Disk discriminating method Pending JPS6413255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16936587A JPS6413255A (en) 1987-07-07 1987-07-07 Disk discriminating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16936587A JPS6413255A (en) 1987-07-07 1987-07-07 Disk discriminating method

Publications (1)

Publication Number Publication Date
JPS6413255A true JPS6413255A (en) 1989-01-18

Family

ID=15885231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16936587A Pending JPS6413255A (en) 1987-07-07 1987-07-07 Disk discriminating method

Country Status (1)

Country Link
JP (1) JPS6413255A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184716A (en) * 1990-11-20 1992-07-01 Sanyo Electric Co Ltd Recording apparatus of information
JPH04205720A (en) * 1990-11-29 1992-07-27 Fujitsu Ten Ltd Optical disk controller
EP0594046A3 (en) * 1992-10-21 1995-02-22 Blaupunkt Werke Gmbh Apparatus for optical record carrier having a disc shape.
KR100413836B1 (en) * 2000-10-30 2003-12-31 주식회사 엘에스텍 Light and blak light utilizing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63268159A (en) * 1987-04-24 1988-11-04 Hitachi Ltd Disk discriminator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63268159A (en) * 1987-04-24 1988-11-04 Hitachi Ltd Disk discriminator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184716A (en) * 1990-11-20 1992-07-01 Sanyo Electric Co Ltd Recording apparatus of information
JPH04205720A (en) * 1990-11-29 1992-07-27 Fujitsu Ten Ltd Optical disk controller
EP0594046A3 (en) * 1992-10-21 1995-02-22 Blaupunkt Werke Gmbh Apparatus for optical record carrier having a disc shape.
KR100413836B1 (en) * 2000-10-30 2003-12-31 주식회사 엘에스텍 Light and blak light utilizing the same

Similar Documents

Publication Publication Date Title
EP0494421B1 (en) Tachometer and rotor identificaton system for centrifuges
JPS6442091A (en) Disk reproducing device
CA2074978A1 (en) Position detecting apparatus and method
EP0265286B1 (en) Random reproducing system for disk player
JPS6413255A (en) Disk discriminating method
CA2009023C (en) Optical disk recording/reproducing apparatus and its disk rotary driving apparatus
JP2551714B2 (en) Disk sensing device
KR920009776B1 (en) DISK DETECTOR OF CARROUSEL TYPE CDP
JPH05258450A (en) Disk size detector
US5594310A (en) Apparatus and method for expanding and controlling the multifunction mechaposition
KR0155761B1 (en) Disk discriminator
US5886358A (en) Device for detecting cut of a tape having engaged gear detecting means
KR0136637Y1 (en) Device for detecting optical disks
KR970006185B1 (en) Disk discrimination method optical disc reproducing device
JPS56130862A (en) Player with automatic changer
JPS56105361A (en) Record player
JPH02161654A (en) Device for detecting whether or not a disk is normally installed in a disk player
KR970006178B1 (en) Cd position setting method using sensor condition
JPS63268159A (en) Disk discriminator
KR970000413B1 (en) Lever and arm control method by sensing position of compact disc and device therefor
JPH0643894Y2 (en) Disc player
KR100202486B1 (en) How to determine the type of tape
JPS5525827A (en) Player device
JPH058753U (en) Compact disk misinsertion processing device
JP2982349B2 (en) Optical disc player