Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
  • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
  • G11B7/0857—Arrangements for mechanically moving the whole head
  • G11B7/08582—Sled-type positioners
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
  • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
  • G11B7/0925—Electromechanical actuators for lens positioning
  • G11B7/0929—Electromechanical actuators for lens positioning for tracking only
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
  • H02K41/02—Linear motors; Sectional motors
  • H02K41/035—DC motors; Unipolar motors
  • H02K41/0352—Unipolar motors
  • H02K41/0354—Lorentz force motors, e.g. voice coil motors
  • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
  • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
  • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
  • H02P25/032—Reciprocating, oscillating or vibrating motors
  • H02P25/034—Voice coil motors

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Power Engineering (AREA)
• Optics & Photonics (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Electromagnetism (AREA)
• Moving Of Heads (AREA)
• Reciprocating, Oscillating Or Vibrating Motors (AREA)
• Moving Of Head For Track Selection And Changing (AREA)
• Rotational Drive Of Disk (AREA)
• Optical Recording Or Reproduction (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=19820866

Family Applications (1)

Country Status (17)

Families Citing this family (15)

Family Cites Families (7)

• 1974
  • 1974-02-28 NL NL7402768A patent/NL7402768A/xx not_active Application Discontinuation
  • 1974-04-29 US US05/464,852 patent/US3969574A/en not_active Expired - Lifetime
  • 1974-09-03 CH CH1192974A patent/CH586445A5/xx not_active IP Right Cessation
• 1975
  • 1975-02-11 ZA ZA00750859A patent/ZA75859B/xx unknown
  • 1975-02-15 DE DE19752506424 patent/DE2506424A1/de active Pending
  • 1975-02-25 GB GB7807/75A patent/GB1501758A/en not_active Expired
  • 1975-02-25 JP JP50022494A patent/JPS5199006A/ja active Pending
  • 1975-02-25 CA CA220,742A patent/CA1063723A/en not_active Expired
  • 1975-02-25 NO NO750637A patent/NO750637L/no unknown
  • 1975-02-25 BR BR1139/75A patent/BR7501139A/pt unknown
  • 1975-02-25 DK DK72675AA patent/DK137905B/da unknown
  • 1975-02-25 AT AT142875A patent/AT345010B/de not_active IP Right Cessation
  • 1975-02-25 IT IT67485/75A patent/IT1030220B/it active
  • 1975-02-25 SE SE7502098A patent/SE7502098L/xx unknown
  • 1975-02-26 ES ES435086A patent/ES435086A1/es not_active Expired
  • 1975-02-26 BE BE153785A patent/BE826028A/xx unknown
  • 1975-02-28 FR FR7506359A patent/FR2262849A1/fr not_active Withdrawn

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