Patent 7857317 was granted and assigned to Sega on December, 2010 by the United States Patent and Trademark Office.
A game machine is provided with a target, a CRT, a card reader and a cash-box on a front face. A player inserts his own ID card into the card reader. The CRT displays information concerning a game and has a function of a game display when a game adopting darts is executed. A target is both a target hit by an arrow and also a tool by which players obtain points, areas or numerals by arrow throwing. A button is provided on the game machine for “Player Change” of the darts, which is used as an operation input switch for a control unit (100).