3723638

Information

• Patent Grant
• 3723638

• References
• Source

• Patent Number

  3,723,638

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • H04N9/7912 - the interfering signals being intermodulation signals
  • H04N9/898 - using frequency multiplication of the reproduced colour signal carrier with another auxiliary reproduced signal

• US Classifications

  • 386 - Motion video signal processing for recording or reproducing