3221159

Information

• Patent Grant
• 3221159

• References
• Source

• Patent Number

  3,221,159

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1965
  59 years ago

• CPC

  • G06G7/1921 - for forming Fourier integrals, harmonic analysis and synthesis
  • G01V1/364 - Seismic filtering
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/192 - Measuring systems
  • H03M2201/20 - A/D converters
  • H03M2201/3105 - Successive addition or subtraction of selected values
  • H03M2201/311 - with plural stages
  • H03M2201/3131 - Direct selection from all possible values
  • H03M2201/3173 - Inductors
  • H03M2201/415 - Amplitude modulated carrier
  • H03M2201/418 - Width modulated pulses
  • H03M2201/4185 - Frequency modulated pulses
  • H03M2201/4212 - Serial
  • H03M2201/4233 - Bivalued
  • H03M2201/4262 - Binary radix
  • H03M2201/537 - Integration
  • H03M2201/538 - Differentiation
  • H03M2201/60 - Fidelity improvement
  • H03M2201/6114 - Manual
  • H03M2201/712 - at input
  • H03M2201/715 - Electrical
  • H03M2201/8112 - Gaseous tubes
  • H03M2201/8176 - Magnetic cores

• US Classifications

  • 702 - Data processing: measuring, calibrating, or testing
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 341 - Coded data generation or conversion
  • 367 - Communications, electrical: acoustic wave systems and devices
  • 708 - Electrical computers: arithmetic processing and calculating