06193608 is referenced by 151 patents and cites 11 patents.

A method of motivating players to return to a casino includes receiving a request to convert a predetermined value of casino currency to cash. Upon the receipt of the request, a premium value is calculated based at least in part on the predetermined value. Subsequently, the customer is provided an instrument having a total value equal to the predetermined value plus the premium value when the instrument is used at the casino. The instrument may comprise a check having a negotiable value equal to the predetermined value, and a second pay-line defining the total value with the premium to be provided if the check is cashed at the issuing casino.

Title
Method for motivating players to return to a casino using premiums
Application Number
8/775598
Publication Number
6193608 (B1)
Application Date
December 31, 1996
Publication Date
February 27, 2001
Inventor
Thomas M Sparico
Riverside
CT, US
James A Jorasch
Stamford
CT, US
Jay S Walker
Ridgefield
CT, US
Agent
Steven M Santisi
US
Patrick J Buckley
US
Kurt M Maschoff
US
Assignee
Walker Digital
CT, US
IPC
A63F 9/22
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