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Police traffic radar for allowing manual rejection of incorrect patrol speed display

DC
  • US 5,565,871 A
  • Filed: 02/10/1995
  • Issued: 10/15/1996
  • Est. Priority Date: 02/10/1995
  • Status: Expired due to Term
First Claim
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1. In a police traffic surveillance radar having an antenna unit of conventional design for transmitting radar signals and receiving radar signals reflected from stationary and moving objects, and coupled to a frequency counting and display unit of conventional design having at least one display window, the improvement comprising:

  • a switch having open and closed states and which can be caused to transition between said open and closed states by a user directly or through an infrared data link, said switch providing the capability for a user to reject an obviously incorrect patrol speed by causing said switch to transition to a predetermined one of said open or closed states;

    a first circuit for selecting a radar return signal received by said antenna as the most likely candidate for calculating and displaying patrol car speed, and for calculating and displaying patrol car speed in said at least one display window of said counting and display unit based upon said selected most likely candidate radar return signaland wherein said first circuit is coupled to said switch so as to sense the state of said switch so as to determine if the displayed patrol speed currently displayed by said first circuit is incorrect, and, if said user has rejected the currently displayed patrol speed, said first circuit for blanking the displayed patrol speed and generating said reject signal and, upon receiving said reject signal, selecting a new most likely candidate radar return signal for calculating and displaying patrol car speed, and for calculating and displaying patrol car speed in said at least one display window based upon said selected new most likely candidate radar return signal.

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