Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
  • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
  • G01P3/42—Devices characterised by the use of electric or magnetic means
  • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
  • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
  • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
  • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
  • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
  • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
  • G11B15/093—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing driving condition of record carrier, e.g. travel, tape tension
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
  • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
  • G11B15/46—Controlling, regulating, or indicating speed
  • G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Transmission And Conversion Of Sensor Element Output (AREA)
• Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
• Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
• Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3602764

Family Applications (1)

Country Status (11)

Families Citing this family (4)

Family Cites Families (3)

• 1974
  • 1974-10-09 AT AT812474A patent/AT331355B/de not_active IP Right Cessation
• 1975
  • 1975-09-26 DE DE19752542956 patent/DE2542956A1/de not_active Withdrawn
  • 1975-10-06 IT IT6947475A patent/IT1047347B/it active
  • 1975-10-06 GB GB4077775A patent/GB1476418A/en not_active Expired
  • 1975-10-06 CH CH1295975A patent/CH593580A5/xx not_active IP Right Cessation
  • 1975-10-06 DK DK449175A patent/DK141919B/da unknown
  • 1975-10-06 CA CA237,118A patent/CA1083688A/en not_active Expired
  • 1975-10-06 JP JP50119882A patent/JPS5164974A/ja active Pending
  • 1975-10-07 ES ES441554A patent/ES441554A1/es not_active Expired
  • 1975-10-07 BE BE160768A patent/BE834288A/xx unknown
  • 1975-10-08 FR FR7530806A patent/FR2287700A1/fr active Granted

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