Slot Machine Capable of Keeping Constant Order or Constant Tempo of Stopping Rotation Reels

A slot machine comprising:

• a plurality of rotation reels rotatably installed in a casing and each having an outer surface on which a plurality of symbols are provided;
• a display window displaying the symbols provided on the outer surface of each of the rotation reels to an outside;
• an input device operable by a player;
• a memory for storing stop positions of the symbols;
• and
• a controller programmed to execute at least processing of:
• (A) storing the stop positions of the symbols on each of the rotation reels in a previous game in the memory;
• (B) when an input is made from the input device, rotating the rotation reels and determining the stop positions of the symbols displayed in the display window;
• (C) storing, in the memory, the stop positions of the symbols determined in the processing (B);
• (D) based on the stop positions of the symbols on each of the rotation reels in the previous game, which are stored in the processing (A), and the stop positions of the symbols on each of the rotation reels, which are stored in the processing (C), adjusting the rotating rotation reels to have a predetermined positional relationship in terms of the symbols by adjusting the rotation speed of the rotation reels,
• the rotation speed being adjusted by increasing or decreasing the rotation speed of the rotation reels,
• the predetermined positional relationship being achieved by adjusting the rotation speed such that the rotation reels stop at identical or predetermined intervals;
• and
• (E) stopping the rotation reels at timings and intervals based on the predetermined positional relationship adjusted in the processing (D).

A slot machine comprising:

• a plurality of rotation reels rotatably installed in a casing and each having an outer surface on which a plurality of symbols are provided;
• stepping motors for rotating the rotation reels, respectively;
• a display window displaying the symbols provided on the outer surface of each of the rotation reels to an outside;
• an input device operable by a player;
• a memory for storing stop positions of the symbols;
• and
• a controller programmed to execute at least processing of:
• (2A) storing the stop positions of the symbols on each of the rotation reels in a previous game in the memory;
• (2B) when an input is made from the input device, rotating the rotation reels and determining the stop positions of the symbols displayed in the display window;
• (2C) storing, in the memory, the stop positions of the symbols determined in the processing (2B);
• (2D) determining the frequency of a pulse input to the stepping motors corresponding to the respective rotation reels based on the stop positions of the symbols on the rotation reels in the previous game, which are stored in the processing (2A), and the stop positions of the symbols on the rotation reels, which are stored in the processing (2C), and adjusting the rotating rotation reels to have a predetermined positional relationship in terms of the symbols by adjusting the rotation speed of the rotation reels by inputting the pulse with the determined frequency to the stepping motors corresponding to the respective rotation reels,
• the predetermined positional relationship being achieved by adjusting the rotation speed such that the rotation reels stop at identical or predetermined intervals;
• and
• (2E) stopping the rotation reels at timings and intervals based on the predetermined positional relationship adjusted in the processing (2D).

A method of controlling a slot machine,

• the slot machine including:
• a plurality of rotation reels rotatably installed in a casing and each having an outer surface on which a plurality of symbols are provided;
• a display window displaying the symbols provided on the outer surface of each of the rotation reels to an outside;
• an input device operable by a player;
• a memory for storing stop positions of the symbols;
• and
• a controller,
• the method comprising the steps executed by the controller of:
• (3A) storing the stop positions of the symbols on each of the rotation reels in a previous game in the memory;
• (3B) when an input is made from the input device, rotating the rotation reels and determining the stop positions of the symbols displayed in the display window;
• (3C) storing, in the memory, the stop positions of the symbols determined in the step (3B);
• (3D) based on the stop positions of the symbols on each of the rotation reels in the previous game, which are stored in the step (3A), and the stop positions of the symbols on each of the rotation reels, which are stored in the step (3C), adjusting the rotating rotation reels to have a predetermined positional relationship in terms of the symbols by adjusting the rotation speed of the rotation reels,
• the rotation speed being adjusted by increasing or decreasing the rotation speed of the rotation reels,
• the predetermined positional relationship being achieved by adjusting the rotation speed such that the rotation reels stop at identical or predetermined intervals;
• and
• (2E) stopping the rotation reels at timings and intervals based on the predetermined positional relationship adjusted in the step (3D).