Game token verification system

Abstract

A game token verification system includes a coin passage defined in a game machine, a perforated game token, a game token sensor installed in the coin passage and adapted for sensing movement of the game token through the coin passage and producing a corresponding identification signal indicative of the pattern of the perforations of the game token, and a comparator installed in the game machine and adapted for receiving the identification signal produced by the game token sensor and comparing the received identification signal to a predetermined reference data and recognizing the authenticity of the game token subject to the comparison result.

1 . A game token verification system, comprising:
 a coin passage defined in a game machine, said coin passage having a bottom side edge;   a game token movable through said coin passage along said bottom side edge, said game token being a small disc used in lieu of currency in said game machine and having holes made thereon subject to a predetermined pattern;   a game token sensor installed in said coin passage and adapted for sensing the presence of a game token in said coin passage and producing a corresponding identification signal, said game token sensor comprising a plurality of light emitter and receiver sets arranged along multiple concentric circles in said coin passage in such a manner that the distance between the center of said concentric circles and said bottom side edge of said coin passage is equal to the radius of said game token; and   a comparator installed in said game machine and adapted for receiving the identification signal produced by said game token sensor and comparing the received identification signal to a predetermined reference data and recognizing the identification of the game token sensed by said game token sensor subject to the comparison result.   
     
     
         2 . The game token verification system as claimed in  claim 1 , wherein the holes of said game token are perforations made subject to a predetermined pattern.