3873992

Information

• Patent Grant
• 3873992

• References
• Source

• Patent Number

  3,873,992

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  49 years ago

• CPC

  • H04N5/921 - by recording or reproducing the baseband signal
  • G11B5/00 - Recording by magnetisation or demagnetisation of a record carrier Reproducing by magnetic means Record carriers therefor
  • H03G9/16 - incorporating negative feedback
  • H03G9/18 - for tone control and volume expansion or compression
  • H03G11/02 - by means of diodes

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 386 - Motion video signal processing for recording or reproducing