3930117

Information

• Patent Grant
• 3930117

• References
• Source

• Patent Number

  3,930,117

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1975
  49 years ago

• CPC

  • G11B9/075 - using mechanical contact with record carrier
  • H04N5/9204 - using frequency division multiplex

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 386 - Motion video signal processing for recording or reproducing
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER