3842197

Information

• Patent Grant
• 3842197

• References
• Source

• Patent Number

  3,842,197

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1974
  50 years ago

• CPC

  • G03H1/26 - Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them
  • G11B7/0065 - Recording, reproducing or erasing by using optical interference patterns
  • G11B7/08582 - Sled-type positioners
  • G11B7/0908 - for focusing only
  • G11B7/12 - Heads
  • H04N5/7605 - on discs or drums
  • H04N5/90 - on discs or drums
  • G03H2270/22 - Disc shaped
  • G03H2270/31 - Flexible

• US Classifications

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