Patent ID: 8729902
Filing Date: 2014-05-20
Classification: G01V

Abstract:
1. A metal detector display in a metal detector having: a search loop assembly comprising one or more coils for transmitting and receiving electrical signals; circuitry for generating a transmit waveform applied to one or more coils in the search loop assembly, wherein the waveform consists of one or more signals comprising one or more frequencies or one or more time-domain sequences or a combination thereof; signal processing circuitry which receives a response signal from the search loop assembly and separates the response signal into its constituent signal components, and performs analyses on said constituent signal components; the improvement comprising: a graphical display which displays analysis results on said constituent signal components from said signal processing circuitry, where the results displayed include two or more graphical regions, further comprising two or more graphs which show two or more graphed responses of the two or more components of the received signal; a user interface comprising one or more of a keypad, knobs, switches, touchscreen, other interface elements; wherein the graphed responses are selectable among amplitude versus frequency, VOI versus frequency, and time domain responses.