Patent ID: 6155565
Filing Date: 2000-12-05
Classification: A63F

Abstract:
A method of retrofitting an amusement machine, said amusement machine including a cabinet, a first playfield, a projection arrangement, a game piece, a first sensor, and a control unit, said first playfield being mounted in said cabinet, said projection arrangement projecting a virtual video image to appear to be superimposed upon said first playfield, said virtual video image including a virtual video target, said game piece being movable relative to said first playfield, said first sensor being mounted to said first playfield and generating a first sensor signal in response to sensing at least one of the presence and absence of said game piece at a location on said first playfield, said control unit selecting said virtual video image from first image data partly in response to said first sensor signal, said method comprising:removing said first playfield from said cabinet;installing a second playfield into said cabinet, said second playfield having a second sensor mounted thereto, said projection arrangement projecting said virtual video image to appear to be superimposed upon said second playfield, said second sensor generating a second sensor signal in response to sensing at least one of the presence and absence of said game piece at a location on said second playfield; andmodifying said control unit to select said virtual video image from second image data partly in response to said second sensor signal.