3716789

Information

• Patent Grant
• 3716789

• References
• Source

• Patent Number

  3,716,789

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1973
  51 years ago

• CPC

  • H04B14/066 - using differential modulation with several bits [NDPCM]

• US Classifications

  • 704 - Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression
  • 341 - Coded data generation or conversion
  • 375 - Pulse or digital communications