Gaming machine with bonus mode
US6203429A · kind A · utility
880Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2007/0064
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A gaming machine is operated by a programmed micro-processor in which the first mode of operation, a basic gambling game, is implemented such as video poker or reel-type slot machine play. If bonus symbols are selected in the basic mode, a bonus mode is triggered. In the bonus mode the same or a different game is implemented by the micro-processor system employing a variable probability trial procedure in which the player continues to play and receive awards until a losing combination occurs. The hit rate for the bonus mode is often significantly greater than 50% although the overall hold percentage of the game remains below 100%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.