×

Microprocessor controlled digital detector

  • US 4,258,423 A
  • Filed: 12/05/1979
  • Issued: 03/24/1981
  • Est. Priority Date: 12/05/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. A microprocessor controlled digital detector for detecting the presence of selected frequencies in an input signal comprising:

  • a microprocessor system having a plurality of inputs and outputs, a waveform shaping circuit having an input adapted to receive an input frequency signal and an output coupled to said microprocessor system, an analog-to-digital converter having an input coupled to receive said input frequency signal and an output coupled to said microprocessor system, a buffer coupled to receive an output from said microprocessor system and having an output indicative of the bandpass of said input signal, and a digital-to-analog converter having an input coupled to an output of said microprocessor system and having an output indicative of the amplitude of said input signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×