×

Signal measurement and processing method and apparatus

  • US 7,548,819 B2
  • Filed: 02/27/2004
  • Issued: 06/16/2009
  • Est. Priority Date: 02/27/2004
  • Status: Active Grant
First Claim
Patent Images

1. Apparatus for generating an output dependent upon the impedance or at least one component of the impedance of a device, the apparatus comprising:

  • a load component having a known impedance or at least one component thereof for connection in series with said device;

    a signal generating arrangement for generating a time-varying electrical signal for application to the series connected load component and device;

    a measurement channel for measuring voltages;

    a switch arrangement connected to said measurement channel for switching the measurement channel to sequentially measure a first voltage on a first side of said load component, and a voltage difference between said first side and a second side of said load component; and

    a processing arrangement connected to said measurement channel for processing the sequentially measured voltages to generate an output dependent upon said impedance or said at least one component of impedance of said device.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×