3869715

Information

• Patent Grant
• 3869715

• References
• Source

• Patent Number

  3,869,715

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1975
  49 years ago

• CPC

  • G11B20/10 - Digital recording or reproducing
  • G06K7/0163 - by means of additional timing marks on the record-carrier
  • G06K13/18 - the record carrier being longitudinally extended
  • G11B15/20 - Moving record carrier backwards or forwards by finite amounts
  • G11B15/52 - by using signals recorded on, or derived from, record carrier
  • G11B27/26 - by photoelectric detection

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER