Data terminal equipment
First Claim
Patent Images
1. In an information providing system where a server provides content data stored therein to a data terminal equipment placed on an information users side for retrieving the content data through a communications network, said data terminal equipment comprising:
- an index retrieval part for retrieving index data indicating said content data;
an authentication part for authenticating said content data based on the index data retrieved by said index retrieval part; and
a content retrieval part for retrieving said content data from said server only if said authentication part has confirmed authenticity of the said content data.
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Accused Products
Abstract
A data terminal equipment retrieves index data indicating content data. Then, the data terminal equipment authenticates the content data based on the index data. Only if the authenticity of the content data has been confirmed, the data terminal equipment retrieves the content data from a first server.
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Citations
20 Claims
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1. In an information providing system where a server provides content data stored therein to a data terminal equipment placed on an information users side for retrieving the content data through a communications network, said data terminal equipment comprising:
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an index retrieval part for retrieving index data indicating said content data;
an authentication part for authenticating said content data based on the index data retrieved by said index retrieval part; and
a content retrieval part for retrieving said content data from said server only if said authentication part has confirmed authenticity of the said content data. - View Dependent Claims (2, 3, 4, 5)
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6. In an information providing system where a server provides content data stored therein to a data terminal equipment placed on an information user side through a communications network, a method of retrieving the content data by said data terminal equipment, said method comprising:
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a step of retrieving index data indicating said content data;
a step of authenticating said content data based on the index data retrieved in said index retrieving step; and
a step of retrieving said content data from said server only if authenticity of the said content data has been confirmed in authenticating step. - View Dependent Claims (7, 8, 9, 10)
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11. A recording medium having a program stored therein, said program for retrieving content data by a data terminal equipment placed on an information user side in an information providing system in which a server provides the content data stored therein through a communications network, said program comprising:
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a step of retrieving index data indicating said content data;
a step of authenticating said content data based on the index data retrieved in said index retrieving step; and
a step of retrieving said content data from said server only if authenticity of the said content data has been confirmed in said authenticating step. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19, 20)
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16. A program for retrieving content data by a data terminal equipment placed on an information user side in an information providing system in which a server provides the content data stored therein through a communications network, said program comprising:
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a step of retrieving index data indicating said content data;
a step of authenticating said content data based on the index data retrieved in said index retrieving step; and
a step of retrieving said content data from said server only if authenticity of the said content data has been confirmed in authenticating step.
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Specification