Electronic gaming device and associated identification unit

1. An electronic gaming machine comprising:

at least one identification unit carried by a player, the identification unit comprising a housing, a transmitter for wirelessly transmitting a unique identifier of the identification unit and at least one touch sensor which causes the transmitter to transmit the identifier when the housing is touched to a touchscreen; and

an electronic gaming device for a multi-player game, the electronic gaming device comprising the touchscreen for controlling the game and a receiver for wirelessly communicating with the identification units of the players;

wherein the gaming device includes a correlator, which correlates a time associated with a touch of the touchscreen by the identification unit with a time associated with an identifier transmitted by the identification unit and received by the receiver of the gaming device in order to assign the touch of the touchscreen to the identification unit of the player.

2. An electronic gaming machine according to claim 1 , wherein the touchscreen evaluates the position of the touch location and uses it to control the game.

3. An electronic gaming machine according to claim 2 , wherein the touchscreen is a multitouch-capable touchscreen.

4. An electronic gaming machine according to claim 3 , wherein the identification unit further comprises a locating circuit for determining an approximate location area of the identification unit over the touchscreen and the transmitter also transmits the current location area when transmitting the identifier,

wherein for approximately simultaneous touches of the touchscreen or approximately simultaneously received identifiers, the correlator compares the received location areas with the positions of the respective touches and, when the position of one of these touches falls within the respective location area of the respective identification unit, assigns this touch to this identification unit.

5. An electronic gaming machine according to claim 4 , wherein the locating circuit determines its location area by phase or transit-time measurements in radio, optical or sound fields emitted by the gaming device by means of transmitter units.

6. An electronic gaming machine according to claim 4 , wherein the locating circuit determines its location area by means of transmitter units using satellite navigation.

7. An electronic gaming machine according to claim 3 , wherein the gaming device further comprises a locating receiver for locating an identification unit, which is just transmitting its identifier, to an approximate location area of this identification unit over the touchscreen,

wherein for approximately simultaneous touches of the touchscreen or approximately simultaneously received identifiers, the correlator compares the located location areas with the positions of the respective touches and, when the position of one of these touches falls within the respective location area of the respective identification unit, assigns this touch to this identification unit.

8. An electronic gaming machine according to claim 7 , wherein the locating receiver has multiple distributed receiving antennas in order to determine the location area of the identification unit by at least one of phase and transit-time measurements on the transmissions of its identifiers.

9. An electronic gaming machine according to claim 7 , wherein the identifier of the identification unit is additionally optically coded on its housing and the locating receiver has a camera in order to determine the location area of the identification unit by detection of the optical coding in a camera image.

10. An electronic gaming machine according to claim 1 , wherein the correlator discards simultaneous touches of the touchscreen.

11. An electronic gaming machine according to claim 1 , wherein the gaming device further comprises a transmitter and transmits an identifier of the touchscreen and the receiver of the gaming device for an identification unit identifier also receives a touchscreen identifier transmitted back by the identification unit,

wherein the identification unit further comprises a receiver, which receives the identifier of a touchscreen, and the transmitter of the identification unit also transmits the received touchscreen identifier on transmission of the identification unit identifier,

wherein the correlator only correlates with the touches those identification unit identifiers whose received touchscreen identifier match the previously transmitted touchscreen identifier.

12. An electronic gaming machine according to claim 1 , wherein the touchscreen is configured in the form of a multiplayer gaming table.

13. An electronic gaming machine according to claim 12 , wherein the multiplayer gaming table comprises at least one of a roulette, poker, blackjack and baccarat live table game.

14. An electronic gaming machine according to claim 1 , wherein the housing of the identification unit is in the form of a gaming chip with the touch sensor located on its outer periphery.

15. An electronic gaming machine according to claim 1 , wherein the touch sensor is formed by one or more pressure switches, which provide tactile feedback to the user upon operation.

16. An electronic gaming machine according to claim 1 , wherein the touch sensor is a shock sensor, which is arranged in the housing of the identification unit.

17. An electronic gaming machine according to claim 1 , wherein the touch of the touchscreen and the identifier transmitted by the identification unit are provided with time stamps from a system-wide clock cycle for time correlation.

18. An electric gaming machine according to claim 1 , wherein a touch of the touchscreen transmits a position of the touch location to a processing unit and the receiver is electronically coupled to the processing unit.

19. An electronic gaming machine according to claim 18 , wherein the processing unit comprises the correlator.

20. An electronic gaming machine according to claim 19 , wherein a clock frequency of the processing unit is correspondingly high and the transmission times of the identification units are correspondingly short to provide high time correlation resolution.

21. An electronic gaming machine according to claim 1 , wherein the correlator discards simultaneously received identifiers.