Digital watermarks and trading cards
First Claim
Patent Images
1. A trading card comprising a substrate and an image formed thereon, wherein the card conveys a frail steganographic watermark representing plural-bit digital data, the frail watermark permitting a copy of the card to be differentiated from the original.
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Accused Products
Abstract
Digital watermarks can be employed in conjunction with trading cards (e.g., baseball cards, fantasy game cards, etc.) to serve a variety of purposes. Among these are facilitating on-line collecting and game-play. Digital watermarks may also be used in distinguishing genuine cards from counterfeits.
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Citations
11 Claims
- 1. A trading card comprising a substrate and an image formed thereon, wherein the card conveys a frail steganographic watermark representing plural-bit digital data, the frail watermark permitting a copy of the card to be differentiated from the original.
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5. A method of playing a fantasy role-playing game involving playing cards, wherein:
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at least one of said cards conveys a plural-bit steganographic watermark;
a first player presents a watermarked card to an optical input device, and is issued a virtual card corresponding thereto; and
the game provides for the conquest of said virtual card by a second player, and its consequent loss by the first player. - View Dependent Claims (6)
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7. A trading card comprising a substrate and an image formed thereon, wherein:
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the card conveys a steganographic watermark representing plural-bit digital data, the trading card has a sports player depicted thereon; and
the digital data serves as an index to a data repository, said data repository having stored therein information comprising at least the following, or a hyperlink to at least the following;
recent auction prices relating to said trading card.
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8. A method comprising:
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issuing a trading card comprising a substrate and an image formed thereon, the card conveying a steganographic watermark representing plural-bit digital data;
receiving data from a first custodian of the card when said first custodian presents the card to a system equipped with an optical image sensor and the system decodes the plural-bit digital data from the steganographic watermark; and
entering information in a database that associates said card with said first custodian, said information including electronic address data corresponding to an internet resource associated with said first custodian. - View Dependent Claims (9, 10, 11)
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Specification