JPS63191468U - - Google Patents

Info

Publication number

JPS63191468U

JPS63191468U JP7847287U JP7847287U JPS63191468U JP S63191468 U JPS63191468 U JP S63191468U JP 7847287 U JP7847287 U JP 7847287U JP 7847287 U JP7847287 U JP 7847287U JP S63191468 U JPS63191468 U JP S63191468U

Authority

JP

Japan

Prior art keywords

optical reference

reference pattern

signal

floppy disk

light source

Prior art date

1987-05-25

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

Links

• Espacenet
• Global Dossier
• Discuss

• 230000003287 optical effect Effects 0.000 claims description 9
• 238000001514 detection method Methods 0.000 claims description 7
• 238000010586 diagram Methods 0.000 description 10

Cited By (1)