3890472

Information

• Patent Grant
• 3890472

• References
• Source

• Patent Number

  3,890,472

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • H04Q11/04 - for time-division multiplexing
  • H04B14/02 - characterised by the use of pulse modulation
  • H04J3/1676 - Time-division multiplex with pulse-position, pulse-interval, or pulse-width modulation
  • H04L5/22 - using time-division multiplexing
  • H04L25/49 - using code conversion at the transmitter using predistortion using insertion of idle bits for obtaining a desired frequency spectrum using three or more amplitude levels; Baseband coding techniques specific to data transmission systems

• US Classifications

  • 370 - Multiplex communications
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems