# US 11,443,590 B2 · Fraud detection system in a casino > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,590 B2 - Document ID: US11443590B2 - Status: Granted - Kind: B2 - Application number: 17/034,492 - Filed: 2020-09-28 - Published: 2021-01-14 - Granted: 2022-09-13 - Earliest claimed: 2015-08-03 - Assignees: Angel Group Co., Ltd. - Applicants: Angel Group Co., Ltd. - Inventors: Yasushi Shigeta - Web page: https://patentgrep.com/patent/US11443590B2 ## CPC - G07F 17/3241: {Security aspects of a gaming system, e.g. detecting cheating, device integrity, surveillance (computer security G06F21/00)} - A63F 1/18: Scoring or registering devices; Indicators (A63F1/16 takes precedence) - A63F 3/00157: {Casino or betting games (horse races A63F3/00082)} - G06Q 50/34: Betting or bookmaking, e.g. Internet betting - G07F 17/322: {Casino tables, e.g. tables having integrated screens, chip detection means} - G07F 17/3206: {Player sensing means, e.g. presence detection, biometrics} - G07F 17/3223: {Architectural aspects of a gaming system, e.g. internal configuration, leader-follower, wireless communication} - G07F 17/3248: {involving non-monetary media of fixed value, e.g. casino chips of fixed value} - G07F 17/3251: {involving media of variable value, e.g. programmable cards, programmable tokens} - G07F 17/3293: {Card games, e.g. poker, canasta, black jack} - A63F 1/14: Card dealers - A63F 2001/001: {Bridge or baccarat} - A63F 2250/58: Antifraud or preventing misuse - 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}) - A63F: CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR ## Abstract A fraud detection system which detects fraud in a game of performing collection and redemption of chips in accordance with a win or lose result includes a camera which captures an image of chips contained in a chip tray of a dealer, an image analyzing apparatus which analyses the image captured by the camera to detect an amount of the chips contained in the chip tray, a card distribution device which determines a win or lose result of a game, and a control device which compares the win or lose result of the game and the amount of the chips contained in the chip tray before and after collection and redemption of the chips to detect fraud. ## Claims ### Claim 1 A management system for a casino having a plurality of gaming tables, the management system comprising: a recorder; and a control device; wherein: the recorder is configured to record a progress of each of one or more of a plurality of games played at one of the gaming tables as a respective image; the control device is configured to perform an image analysis on the respective image to recognize respective positions, types, and numbers of chips on the one of the gaming tables wagered by one or more players in respective games of the one or more of the plurality of games, the recognition of at least one of the positions of the chips, the types of the chips, and the numbers of the chips being performed using artificial intelligence technology or machine learning technology; and the recorder has an offset viewing angle capturing a plurality of betting areas on which can be recognized the positions, types, and numbers of the chips wagered by the one or more players. ### Claim 2 (depends on 1) The management system according to claim 1, wherein the control device is configured to recognize one or more stacks of the wagered chips that are near to the recorder and one or more stacks of the wagered chips that are further from the recorder by the performance of the image analysis. ### Claim 3 (depends on 1) The management system according to claim 1, wherein the one or more players, whose wagered chips the control device is configured to recognize via the image analysis, includes a plurality of players. ### Claim 4 (depends on 1) The management system according to claim 1, wherein the recorder is a camera system that has no light for illuminating the wagered chips. ### Claim 5 (depends on 1) The management system according to claim 1, wherein the control device is configured to recognize an amount of the wagered chips. ### Claim 6 (depends on 5) The management system according to claim 5, wherein the control device is configured to record a history of the amount of the wagered chips at predefined timings. ### Claim 7 (depends on 1) The management system according to claim 1, wherein: the control device is configured to specify individual players of the one or more players who are placed at respective playing positions of the one of the gaming tables; the specifying of the individual players includes providing each of the one or more players with a respective identification number or identifying the respective identification number of the each of the one or more players; and the control device is configured to associate respective chips of the chips on the one of the gaming tables with the respective identification number of the respective player who bet the respective chips. ### Claim 8 (depends on 7) The managing system according to claim 7, wherein the control device is configured to: recognize respective amounts of increase/decrease of chips of respective players of the one or more players in the respective games of the one or more of the plurality of games calculated from a win or lose result of the respective game; recognize a respective history within the respective games of the one or more of the plurality of games; and recognize a respective history of win or lose and amounts of income/expenditure of the respective players of the one or more players at timings of each lapse of a predetermined number of the plurality of games. ### Claim 9 (depends on 8) The managing system according to claim 8, further comprising a win or lose result determining device, wherein the win or lose determining device is configured to determine the respective win or lose result of each of the plurality of games use by the control device for the calculation. ### Claim 10 (depends on 7) The managing system according to claim 7, wherein the control device is configured to: specify an individual player of the one or more players as being in a strange situation in which an amount of the wagered chips, a winning amount, and/or a win and lose history is strange compared to statistical data; and output an indication of an existence of the specified individual player being in the strange situation. ### Claim 11 (depends on 10) The managing system according to claim 10, wherein the strange situation is: 1) a situation in which the winning amount is more than a predetermined amount; 2) a situation in which a state that an amount of the wagered chips at a lose time is small and an amount of the wagered chips at a win time is large continues for several games and the state is strange compared with statistical data; 3) a situation in which an actual winning amount of a respective player of the one or more players is strange compared to an average winning amount statistically expected based on history of wagered amounts; 4) a situation in which a respective position of the chips wagered by a respective player of the one or more players and a respective amount of the chips obtained by the respective player are strange compared with statistical data; and/or 5) a situation in which a winning rate when an amount of the wagered chips is more than a predetermined amount is strange compared with statistical data. ### Claim 12 (depends on 7) The managing system according to claim 7, wherein the specifying of the individual players by the control device includes extracting respective face images of the players using the artificial intelligence technology or machine learning technology. ### Claim 13 (depends on 1) The managing system according to claim 1, wherein the recorded comprises two cameras. ### Claim 14 A management system comprising: a camera system including at least one camera, wherein the at least one camera is positioned raised from a top surface of a game table and oriented so that a respective direction from the camera to a respective focal point of the camera is oblique relative to the top surface of the game table, wherein the camera system is configured to record a progress of each of one or more of a plurality of games played at the game table as a respective set of one or more images generated by the at least one camera; and a control device, wherein the control device is configured to: perform image analysis on the respective sets of one or more images to recognize respective positions, types, and numbers of chips on the game table wagered in the respective one or more of the plurality of games; and perform the recognizing of at least one of the respective positions of the chips, the respective types of the chips, and the respective numbers of the chips in the respective one or more of the plurality of games using artificial intelligence technology or machine learning technology. ### Claim 15 (depends on 14) The management system according to claim 14, wherein the control device is configured to recognize one or more stacks of the wagered chips that are near to the camera and one or more stacks of the wagered chips that are further from the camera by the performance of the image analysis. ### Claim 16 (depends on 14) The management system according to claim 14, wherein the control device is configured to perform the recognition, via the image analysis, for chips wagered by a plurality of players. ### Claim 17 (depends on 14) The management system according to claim 14, wherein the camera system has no light for illuminating the wagered chips. ### Claim 18 (depends on 14) The management system according to claim 14, wherein the control device is configured to determine an amount of the wagered chips. ### Claim 19 (depends on 18) The management system according to claim 18, wherein the control device is configured to record a history of the amount of the wagered chips at predefined timings. ### Claim 20 (depends on 14) The management system according to claim 14, wherein: the game table includes a plurality of predefined betting areas; and the recognition of the positions of the chips on the game table includes identifying in which respective ones of the plurality of predefined betting areas the respective chips are positioned. ### Claim 21 (depends on 20) The management system according to claim 20, wherein the recognition of the respective positions of the respective chips in the respective predefined betting areas is performed using the artificial intelligence technology or machine learning technology based on a respective viewing angle of the at least one camera. ### Claim 22 (depends on 14) The management system according to claim 14, wherein: the game table includes a plurality of predefined player positions; and the recognition of the positions of the chips on the game table includes identifying in which respective ones of the plurality of predefined player positions the respective chips are positioned. ### Claim 23 (depends on 14) The management system according to claim 14, wherein the at least one camera includes a plurality of cameras. ### Claim 24 (depends on 14) The management system according to claim 14, wherein the control device is configured to: recognize respective amounts of increase/decrease of chips in the respective games calculated from a win or lose result of the respective game; recognize a respective history within the respective game; and recognize a respective history of win or lose and amounts of income/expenditure at timings of each lapse of a predetermined number of the plurality of games. ### Claim 25 (depends on 24) The management system according to claim 24, further comprising a win or lose result determining device, wherein the win or lose result determining device is configured to determine the respective win or lose result of the respective games used by the control device for the calculation.