3825680

Information

• Patent Grant
• 3825680

• References
• Source

• Patent Number

  3,825,680

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1974
  50 years ago

• CPC

  • H04B14/066 - using differential modulation with several bits [NDPCM]
  • H04N19/50 - using predictive coding
  • H04N19/895 - in combination with error concealment

• US Classifications

  • 348 - Television
  • 375 - Pulse or digital communications