US 6,550,765 B1 · Game machine

Abstract

A game machine precluding deceit by making it impossible to learn the renewal period of a counter used to produce a random number for determining a big hit. The game machine includes a liquid crystal display device and a controller, the liquid crystal display device providing a varying display in response to a startup command and displaying symbols including a special symbol shifting to a special game state when the varying display stops at a specified combination of the special symbols. The controller executes a game control process including control of the display by the liquid crystal display device. The controller includes counters that repeatedly add a fixed number at counting time intervals and are initialized at constant periods and extract, for use as a special determination-purpose random number, a sum of count values of two specified counters initialized at different periods when the startup command is issued, and determines if the game is shifted to the special playing state based on the random number.

Claims8

Dependent claims

A game machine comprising:

a display device starting a varying display in response to a startup command, the display device displaying symbols necessary for a game, the symbols including special symbols arranged so that game state shifts to a special game state if the varying display stops at a specified combination of the special symbols;
a controller executing a game control process including controlling the varying display, the controller having a plurality of counters, count values of which are obtained from repeated additions of respective fixed numbers at respective specified counting time intervals and are initialized at respective constant periods, wherein a value calculated using the count values of two of the plurality of counters, the respective constant periods of the two counters being different from each other, is extracted as a random number for a determination, when the startup command is issued, as to whether the game state is to be shifted to the special game state based on the random number.

A method of playing a game comprising:

starting a varying display in response to a startup command;
displaying symbols necessary for a game, the symbols including special symbols arranged so that game state shifts to a special game state if the varying display stops at a specified combination of the special symbols;
and
executing a game control process including control of the varying display, the game control process including:
repeating a first addition of a first fixed number at first counting time intervals to obtain a first count value and storing the first count value,
initializing the first count value at first constant periods,
repeating a second addition of a second fixed number at second specified counting intervals to obtain a second count value and storing the second count value,
initializing the second count value at second constant periods different from the first constant periods,
extracting a value calculated using the first and second count values as a special determination random number when the startup command is issued, and
determining if the game is to be shifted to the special game state based on the special determination random number.

7 more elements

Dependencies are inferred from the claim text.

Game machine

Life of this patent

Game machine

Life of this patent

Abstract

Claims8