JPS57154689A - Display recognizing method on disk medium - Google Patents

Display recognizing method on disk medium

Info

Publication number
JPS57154689A
JPS57154689A JP56041333A JP4133381A JPS57154689A JP S57154689 A JPS57154689 A JP S57154689A JP 56041333 A JP56041333 A JP 56041333A JP 4133381 A JP4133381 A JP 4133381A JP S57154689 A JPS57154689 A JP S57154689A
Authority
JP
Japan
Prior art keywords
medium
rotation
characters
lamp
disk
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
JP56041333A
Other languages
Japanese (ja)
Inventor
Kiyoshi Iiizumi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56041333A priority Critical patent/JPS57154689A/en
Publication of JPS57154689A publication Critical patent/JPS57154689A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To recognize the display on a medium, in a static state, by irradiating a light beam in the form synchronizing with rotation of the medium, to the disk medium being in a rotating state, and illuminating the medium at a position of the same rotation angle. CONSTITUTION:A magnetic disk device 1 is provided with a magnetic disk medium 2 whose rotation is driven freely in the direction as indicated with an arrow A by a motor 9. The disk medium 2 consists of plural disks 3, and on the disk 3 of its uppermost part, plural characters 5 are displayed, and the contents of stored information are displayed. A lamp driving circuit 7 for periodically turning on and off a lamp 6 on the medium, synchronizing with rotation of the medium 2 is connected. The rotating medium 2 is illuminated by a light beam 13 emitted from the lamp 6 whenever it comes to a position of the same rotation angle, and the characters 5 can be seen in a static state. When the lamp driving circuit 7 is synchronized with an output of a sensor 11 for detecting the rotation of the medium, said characters can be recognized even if the rotational frequency is varied.
JP56041333A 1981-03-20 1981-03-20 Display recognizing method on disk medium Pending JPS57154689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041333A JPS57154689A (en) 1981-03-20 1981-03-20 Display recognizing method on disk medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041333A JPS57154689A (en) 1981-03-20 1981-03-20 Display recognizing method on disk medium

Publications (1)

Publication Number Publication Date
JPS57154689A true JPS57154689A (en) 1982-09-24

Family

ID=12605589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041333A Pending JPS57154689A (en) 1981-03-20 1981-03-20 Display recognizing method on disk medium

Country Status (1)

Country Link
JP (1) JPS57154689A (en)

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