# US 5,702,302 A · Gambling machine with display means for the display of symbols

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- Number: US 5,702,302 A
- Document ID: US5702302A
- Status: Granted
- Kind: A
- Application number: 08/531,500
- Filed: 1995-09-21
- Granted: 1997-12-30
- Earliest claimed: 1994-09-23
- Assignees: Atronic Casino Technology Distribution GmbH
- Inventors: Michael Gauselmann
- Web page: https://patentgrep.com/patent/US5702302A

## CPC

- G07F 17/3244: {Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes}
- G07F: COIN-FREED OR LIKE APPARATUS (coin sorting G07D3/00; coin testing G07D5/00; {handling coins or paper currencies apart from payment activated apparatus G07D; payment architectures, schemes or protocols G06Q20/00})

## Abstract

The stopped rotating bodies of coin-operated gambling machines display a symbol combination which decides a win or non-win situation. The stop positions of the rotating bodies are determined with a random number generator. A random number generator is provided, which allows, without large expenditures, to adapt quickly the respective number of symbols to be displayed and the respective display frequency. A result output region is coordinated to each symbol. The symbol sequence is determined for the respective result output region with a pseudo-random number. The pseudo-random number is compared with a predetermined number from the respective result output region and in case of a numerical coincidence between pseudo-random number and predetermined number, a symbol of a rotating reel stop position and coordinated to the result output region, is displayed.

## Claims

### Claim 1

A method of operating a gambling machine comprising the steps:
initiating a game;
determining a certain game stop position of a displayed rotating reel;
determining a pseudo-random number with a pseudo-random number generating means for the certain game stop position;
comparing the pseudo-random number with a predetermined number within a range of pseudo-random numbers generatable for the possible game stop position;
increasing the certain game stop position by a step where the pseudo-random number does not numerically coincide with the predetermined number and determining another pseudo-random number and repeating the above steps following such determination;
displaying the symbol associated with the game stop position when the pseudo-random number numerically coincides with the predetermined number and paying out a winning amount when coordinated to the symbol displayed.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising
determining upon initiating a game a first displayed rotating reel and performing the recited procedure for this displayed rotating reel;
determining the presence of a last displayed rotating reel upon displaying the symbol associated with the game stop position;
transferring operation to a displayed rotating reel next in sequence if the thereto preceding rotating reel was the last displayed rotating reel, and determining a possible game stop position for the displayed rotating reel next in sequence and performing the steps recited above following to such determination of a possible game stop position.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the predetermined number is associated with the value "0".

### Claim 4 (depends on 1)

The method according to claim 1, wherein the range of pseudo-random numbers of a result output region is different for each game stop position.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising displaying the symbol on display means;
indicating a win or non-win situation with the symbol displayed;
employing a microcomputer for sequential control of above operational steps.

### Claim 6 (depends on 1)

The method according to claim 1, further comprising
actuating the gambling machine by manually contacting buttons located on the gambling machine.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the displayed rotating reel is provided by a rotating reel body forming part of a gambling machine.

### Claim 8

An entertainment machine comprising a display means for displaying symbols, where the symbols indicate a win or non-win situation;
a control unit with a microprocessor for sequential control of operation, wherein the symbol to be displayed is determined by a random number generator, wherein a result output region is coordinated to each symbol, and wherein a pseudo-random number is determined in symbol sequence with the pseudo-random number generator from within a respective result output region until the determined pseudo-random number numerically coincides with a predetermined number from the respective result output region, and wherein the symbol coordinated to the result output region is displayed with the display means when a numerical coincidence is present.