Information storage medium and electronic device using the same for authentication purposes
AssigneeSega Enterprises, Ltd.
InventorAtsushi Kitahara
Life of this patent
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Abstract
Security is ensured by judging agreement with a specific indication, such as a trademark, whose identity is socially recognizable to effectively expel counterfeits from the market. A game machine in which a CD-ROM 17 is mounted on a game machine 10 to play a game based on program information stored in the CD-ROM 17 comprises a recognition sensor 22 reading a trademark indication region 20 on the exterior surface of the CD-ROM 17, and a judging unit judging whether a specific trademark TM is displayed in a trademark indication region, the game based on the program information being prevented from starting, or if started stopped when the specific trademark TM is not displayed.
Claims21
An electronic device comprising:
- a medium mounting unit on which an information storage medium storing a game program is to be detachably mounted;
- an optical detection unit which optically detects said information storage medium at an information region storing said game program and at a predetermined region different from said information region, wherein an authentic information storage medium should carry a predetermined specific indication formed on the predetermined region of such an area size and a property as optically detectable by an optical detection unit as well as visually recognizable to the eye as the specific indication;
- a game control unit which controls a game in accordance with said game program stored in said information storage medium;
- a storage unit which stores a reference signal corresponding to said predetermined specific indication;
- and
- a judging unit which compares a detected signal which is generated by detecting said predetermined region, with said reference signal stored in said storing unit to judge whether or not said predetermined specific indication is formed on said predetermined region.
An optically detectable disc-shaped information storage medium for use with an electronic device, comprising an information region in which a game program is stored in a manner optically detectable by an electronic device, said medium further comprising a predetermined region in which an authentication indication is formed in such a manner as to be visually recognizable to a human eye as well as optically detectable by an optical detection unit so that said authentication indication can be visually perceived by a human, as well as be optically detectable by said electronic device and compared with reference signals stored in said electronic device when said medium is mounted on said electronic device.
An optically detectable disc-shaped information storage medium for use with an electronic device for executing a game program, comprising:
- a transparent disc-shaped substrate;
- an information storing region defined at a surface of said substrate with game program information stored with pits;
- an image indication region defined at a region of said surface of the substrate different from said information storage region and formed with an authentication image indication by using a group of pits so as to be visually recognizable to the human eye as the authentication image indication as well as optically detectable as a signal indicative of the authentication image indication when said image indication region is optically detected by said electronic device for comparison of the detected signal with a reference data stored in said electronic device, said authentication image indication being of a nature that an unauthorized use of said authentication image indication on said information storage medium is legally prohibited;
- a reflection layer covering said surface of the substrate;
- and
- a protection layer covering said reflection layer.
An optically detectable disc-shaped information storage medium for use with an electronic device for executing a game program, comprising:
- a disc-shaped substrate;
- a first region defined on said substrate and storing game program information;
- and
- an image indication region formed on said substrate with an indication of "SEGA" in such a manner as to be visually recognizable to the human eye as well as readable by said electronic device as a signal indicative of the indication of "SEGA" to be compared with a reference signal indicative of the indication of "SEGA" stored in said electronic device for authentication purposes when said medium is mounted on the electronic device.
Dependencies are inferred from the claim text.