Method and apparatus for randomly positioning indica-bearing members
US4421310A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/34
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a slot machine, the individual mechanical reels are stopped under the command of an electronic circuit at positions determined by a random count created by the electronic circuit. Specifically, counting registers are continuously cycled through counts corresponding to all possible combinations of the indicia on the reels at a rapid rate while the machine is idle, the cycling being stopped when play begins. The content of the registers at the moment when the cycling is stopped determines the position in which the electronic circuit will stop the reels. The randomness of the count may be increased by cyclically changing the relationship between the counting registers and the reels. The reel positions are delineated by a repeated code providing a different code for any successive three positions. Two sensors are provided to determine the position and detect an error in the stopped position of the reel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.