Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
  • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
  • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
  • G11B19/124—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of diameter of disks
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
  • G11B3/02—Arrangements of heads
  • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
  • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
  • G11B3/08503—Control of drive of the head
  • G11B3/08506—Control of drive of the head for pivoting pick-up arms
  • G11B3/08512—Control of drive of the head for pivoting pick-up arms using optical detecting means

Priority Applications (1)

Applications Claiming Priority (1)

Publications (2)

Family

ID=19815804

Family Applications (1)

Country Status (1)

• 1972
  • 1972-04-07 NL NL7204724A patent/NL149022B/xx not_active IP Right Cessation

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