Information distribution system, information distribution device, information receiving device, information distribution method, information distribution program, recording medium recording the information distribution program, information receiving method, information receiving program, and recording medium recording the information receiving program
First Claim
Patent Images
1. An information distribution system which distributes contents data via a communications network, the contents data being provided by an information source provider, comprising:
- a distribution device for distributing distribution data containing the contents data; and
a receiving device for receiving and storing the distribution data,wherein;
the distribution data further contains use limitation information of the distribution data, andthe receiving device rewrites the use limitation information of the stored distribution data upon receipt of permission by the distribution device, wherein;
the receiving device receives from the distribution device a reuse information key indicative of details of changes made in the use limitation information and rewrites use limitation information of the distribution data stored in the receiving device based on the reuse information key.
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Accused Products
Abstract
In the case of modifying available copy count information which is contained in distribution data, the distribution data being distributed from a distribution server and stored in a PC which serves as a receiving device, the PC sends a reuse request to the distribution server. Thereafter, the PC receives a reuse information key from the distribution server so as to rewrite the available copy count of the distribution data based on the reuse information key, thereby making it possible to reuse the distribution data already distributed once.
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Citations
26 Claims
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1. An information distribution system which distributes contents data via a communications network, the contents data being provided by an information source provider, comprising:
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a distribution device for distributing distribution data containing the contents data; and a receiving device for receiving and storing the distribution data, wherein; the distribution data further contains use limitation information of the distribution data, and the receiving device rewrites the use limitation information of the stored distribution data upon receipt of permission by the distribution device, wherein; the receiving device receives from the distribution device a reuse information key indicative of details of changes made in the use limitation information and rewrites use limitation information of the distribution data stored in the receiving device based on the reuse information key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An information distribution device, which is connected to a communications network and distributes distribution data containing contents data which is provided by an information source provider with respect to a receiving device, wherein:
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the distribution data further contains use limitation information of the distribution data, the device comprising; a reuse request information receiving section for receiving from the receiving device a request for rewriting use limitation information of the distribution data stored in the receiving device; and a reuse permission section for giving permission to rewrite the use limitation information of the distribution data stored in the receiving device, wherein; the reuse permission section sends a reuse information key indicative of details of changes made in the use limitation information with respect to the receiving device, and the receiving device rewrites the use limitation information of the distribution data stored in the receiving device based on the reuse information key. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An information receiving device, which is connected to a communications network and receives from a distribution device distribution data containing contents data which is provided by an information source provider, wherein:
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the distribution data further contains use limitation information of the distribution data, the device comprising; an order placing section for sending a request for rewriting use limitation information of distribution data which is stored in the information receiving device with respect to the distribution device; and a reuse setting section for rewriting the use limitation information of the stored distribution data when obtaining permission to rewrite the use limitation information of the distribution data from the distribution device, wherein the reuse setting section receives from the distribution device a reuse information key indicative of details of changes made in the use limitation information and rewrites the use limitation information of the distribution data based on the reuse information key. - View Dependent Claims (17, 18, 19, 20)
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21. An information distribution method, which is connected to a communications network and distributes distribution data containing contents data from a distribution device to receiving devices, the contents data being provided by an information source provider,
the method wherein the distribution data further contains use limitation information of the distribution data, the method comprising the steps of: -
receiving from the receiving device a request for rewriting the use limitation information of distribution data which is stored in the receiving device; giving permission to rewrite the use limitation information of the distribution data stored in the receiving device; providing a reuse information key indicating a change in the use limitation information being supplied to the receiving device; and
the receiving device rewriting the use limitation information of the distribution area stored in the receiving device reference to the reuse information key.
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22. A computer readable recording medium storing a program that is executed by a computer to perform an information distribution program, which is connected to a communications network and distributes distribution data containing contents data from a distribution device to receiving devices, the contents data being provided by an information source provider,
the program wherein: -
the distribution data further contains use limitation information of the distribution data, and the program using a computer to execute the processes of; receiving from the receiving device a request for rewriting the use limitation information of distribution data which is stored in the receiving device; and giving permission to rewrite the use limitation information of the distribution data stored in the receiving device, providing a reuse information key indicating a change in the use limitation information being supplied to the receiving device; and
the receiving device rewriting the use limitation information of the distribution area stored in the receiving device reference to the reuse information key. - View Dependent Claims (23)
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24. An information receiving method, which is connected to a communications network and receives distribution data containing contents data from a distribution device, the contents data being provided by an information source provider,
the method wherein the distribution data further contains use limitation information of the distribution data, the method comprising the steps of: -
sending a request for rewriting use limitation information of distribution data which is stored in the information receiving device with respect to the distribution device, rewriting the use limitation information of the stored distribution data when obtaining permission to do so from the distribution device, providing a reuse information key indicating a change in the use limitation information being supplied to the receiving device, and the receiving device rewriting the use limitation information of the distribution area stored in the receiving device reference to the reuse information key.
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25. A computer readable recording medium storing a program that is executed by a computer to perform an information receiving program, which is connected to a communications network and receives from a distribution device distribution data containing contents data provided by an information source provider,
the program wherein the distribution data further contains use limitation information of the distribution data, the program using a computer to execute the processes of: -
sending a request for rewriting the use limitation information of distribution data which is stored in the information receiving device with respect to the distribution device; rewriting the use limitation information of the stored distribution data when obtaining permission to do so from the distribution device; providing a reuse information key indicating a change in the use limitation information being supplied to the receiving device and the receiving device rewriting the use limitation information of the distribution area stored in the receiving device reference to the reuse information key. - View Dependent Claims (26)
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Specification