Data use management system, transmitting apparatus having management function, and data use management method
First Claim
1. A data use management system comprising at least one receiving apparatus connected to a network and capable of receiving and using predetermined data, and a transmitting apparatus which transmits the data to said receiving apparatus via said network,wherein use of the data on said network is managed on the basis of a transmitting time for transmission of predetermined information between said transmitting apparatus and said receiving apparatus,wherein said transmitting apparatus has:
- transmission time measuring means of measuring the transmission time for transmission of the predetermined information for measurement between said transmitting apparatus and said receiving apparatus;
reference time storage means of storing a plurality of reference times;
transmitting-side authentication means of comparing the transmission time and the plurality of reference times, thereby determining to which one of ranges of transmission time classified on the basis of the reference times the transmission time belongs, determining, on the basis of the result of said determination, whether or not said receiving apparatus having the transmission time is permitted to use the predetermined data, and performing authentication if said receiving apparatus is permitted to use the predetermined data; and
authentication count means of incrementing an authentication count which is a number of instances of authentication performed by said transmitting-side authentication means,wherein said receiving apparatus has receiving-side authentication means of performing authentication with said transmitting-side authentication means, and wherein said transmitting apparatus compares the authentication count with a maximum authentication count determined in advance with respect to each of the ranges of transmission time, and inhibits further authentication if the authentication count is larger than the maximum authentication count;
wherein said transmitting-side authentication means sets the maximum authentication count to a smaller value based on a result of said classification of the plurality of ranges so that a class with greater transmission time is set to the smaller value of the maximum authentication count.
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Accused Products
Abstract
The conventional method of limiting the number of receiving apparatus has a problem that if the limited number of appliances is reduced to limit distribution to unspecified appliances outside a home, distribution to appliances in the home is limited unnecessarily. If the limited number of appliances is increased, distribution to appliances outside the home cannot be sufficiently limited. The invention provides at least one receiving apparatus, (e.g., digital television sets and PCs,) connected to a network and capable of receiving and using predetermined data, and a transmitting apparatus, (e.g., an AV server) for transmitting the data to the receiving apparatus via the network. Use of the data on the network is managed based on the transmission time required for transmission of predetermined information between the transmitting apparatus and the receiving apparatus.
18 Citations
21 Claims
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1. A data use management system comprising at least one receiving apparatus connected to a network and capable of receiving and using predetermined data, and a transmitting apparatus which transmits the data to said receiving apparatus via said network,
wherein use of the data on said network is managed on the basis of a transmitting time for transmission of predetermined information between said transmitting apparatus and said receiving apparatus, wherein said transmitting apparatus has: -
transmission time measuring means of measuring the transmission time for transmission of the predetermined information for measurement between said transmitting apparatus and said receiving apparatus; reference time storage means of storing a plurality of reference times; transmitting-side authentication means of comparing the transmission time and the plurality of reference times, thereby determining to which one of ranges of transmission time classified on the basis of the reference times the transmission time belongs, determining, on the basis of the result of said determination, whether or not said receiving apparatus having the transmission time is permitted to use the predetermined data, and performing authentication if said receiving apparatus is permitted to use the predetermined data; and authentication count means of incrementing an authentication count which is a number of instances of authentication performed by said transmitting-side authentication means, wherein said receiving apparatus has receiving-side authentication means of performing authentication with said transmitting-side authentication means, and wherein said transmitting apparatus compares the authentication count with a maximum authentication count determined in advance with respect to each of the ranges of transmission time, and inhibits further authentication if the authentication count is larger than the maximum authentication count; wherein said transmitting-side authentication means sets the maximum authentication count to a smaller value based on a result of said classification of the plurality of ranges so that a class with greater transmission time is set to the smaller value of the maximum authentication count.
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2. A transmitting apparatus having a management function for enabling at least one receiving apparatus connected to a network and configured to receive and use data via said network, said transmitting apparatus comprising:
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transmission time measuring means of measuring the transmission time for transmission of predetermined information between said transmitting apparatus and said receiving apparatus; reference time storage means of storing a plurality of reference times; transmitting-side authentication means of comparing the measured transmission time and the plurality of reference times to determine to which one of a plurality of ranges the transmission time belongs, the plurality of ranges being classified based on the plurality of reference times and of determining, based on which one of the plurality of ranges the measured transmission time belongs, whether or not said receiving apparatus having the corresponding measured transmission time is permitted to use the data, and performing authentication if said receiving apparatus is permitted to use the data; authentication count means of incrementing an authentication count which is a number of instances of authentication performed by said transmitting-side authentication means; and a management function of comparing the incremented authentication count with a maximum authentication count determined in advance with respect to each of the plurality of ranges, and inhibiting further authentication if the incremented authentication count is larger than the maximum authentication count; wherein said transmitting-side authentication means sets the maximum authentication count to a smaller value based on a result of said classification of the plurality of ranges so that a class with greater transmission time is set to the smaller value of the maximum authentication count. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A data use management method, comprising steps of:
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when transmitting data via a network from a transmitting apparatus to at least one receiving apparatus connected to the network and capable of receiving and using the data, permitting access to the data by the at least one receiving apparatus via the network based on a transmitting time for transmission of predetermined information between the transmitting apparatus and said receiving apparatus exceeding one value, measuring the transmission time for transmission of the predetermined information between said transmitting apparatus and said receiving apparatus, comparing the measured transmission time and a plurality of reference times to determine to which one of a plurality of ranges the transmission time belongs, the plurality of ranges being classified based on the plurality of reference times, and determining, based on which one of the plurality of ranges the measured transmission time belongs, whether or not said receiving apparatus having the corresponding measured transmission time is permitted to use the data, performing authentication if said receiving apparatus is permitted to use the data, incrementing the authentication count which is a number of instances of authentication performed, comparing the increased authentication count with a maximum authentication count determined in advance with respect to each of the plurality of ranges, and inhibiting further authentication if the incremented authentication count is larger than the maximum authentication count, and setting the maximum authentication count to a smaller value based on a result of said classification of the plurality of ranges in the authentication so that a class with greater transmission time is set to the smaller value of the maximum authentication count.
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21. A recording medium having the program stored thereon and configured to be processed using a computer, the program executing the method including
measuring the transmission time for transmission of predetermined information between a transmitting apparatus and a receiving apparatus; -
storing a plurality of reference times; comparing the measured transmission time and the plurality of reference times to determine to which one of a plurality of ranges the transmission time belongs, the plurality of ranges being classified based on the plurality of reference times; determining, based on which one of the plurality of ranges the measured transmission time belongs, whether or not said receiving apparatus having the corresponding measured transmission time is permitted to use the data; performing authentication if said receiving apparatus is permitted to use the data; incrementing an authentication count which is a number of instances of authentication performed; comparing the incremented authentication count with a maximum authentication count determined in advance with respect to each of the plurality of ranges; and inhibiting further authentication if the incremented authentication count is larger than the maximum authentication count; setting the maximum authentication count to a smaller value based on a result of said classification of the plurality of ranges in the authentication so that a class with greater transmission time is set to the smaller value of the maximum authentication count.
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Specification