Information processing scheme for realizing contents transfer and copyright protection
First Claim
1. A bridge device for bridging between communication devices in an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering, in each of the communication devices, unique information which is unique to a short range communication device connectable to the each of the communication devices and permitting information transfer between communication devices which share common unique information, where the unique information is formed by a pair of a public unique information and a secret unique information, and where the registration of the unique information is performed by transmitting the unique information of the short range communication device to the each of the communication devices through short range communication of the short range communication device, the bridge device comprising:
- a unique information storing unit configured to store pairs of the public unique information and the secret unique information of different short range communication devices registered by the bridge device through the short range communication of the short range communication devices respectively;
a proxy check request receiving unit configured to receive a proxy check request for determining, in place of the communication devices, whether to permit information transfer on the basis of the public unique information stored in the unique information storing unit, the public unique information registered by a first communication device, and an address information of a second communication device which is an intended correspondent of the first communication device, from the first communication device;
a first judgment unit configured to judge whether the public unique information registered by the first communication device is the public unique information of one of the different short range communication devices;
a second judgment unit configured to receive the public unique information from the second communication device, and judge whether the public unique information received from the second communication device is the public unique information of one of the different short range communication devices or not;
a device type judgment unit configured to judge whether the second communication device is another bridge device or not, when the first judgment unit judges that the public unique information registered by the first communication device is registered in the unique information storing unit and the second judgment unit judges that one public unique information registered in the unique information storing unit is registered by the second communication device; and
a unique information transmission determining unit configured to determine transmission of the secret unique information registered by the first communication device to the second communication device after confirming that each of the first and second communication devices registers the unique information of any one of the different short range communication devices, according to a judgment result of the device type judgment unit,wherein the communication of the short range communication device is based on a physical layer and a datalink layer, and the communication among the first and second communication devices and the bridge device is based on a network layer and a transport layer.
1 Assignment
0 Petitions
Accused Products
Abstract
An information processing system in which information transfers between communication devices through a network is limited within a prescribed range by registering unique information obtainable within the prescribed range into each device and permitting information transfer between devices which share common unique information, where the unique information is formed by a pair of public and secret unique information, a bridge device is controlled such that, upon receiving a proxy check request from a reception device, whether a transmission device is another bridge device or not is judged when the public unique information registered by the reception device is registered in the bridge device and one public unique information registered in the bridge device is registered by the transmission device. Then, the secret unique information registered by the reception device is transmitted to the transmission device when the transmission device is not another bridge device.
20 Citations
14 Claims
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1. A bridge device for bridging between communication devices in an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering, in each of the communication devices, unique information which is unique to a short range communication device connectable to the each of the communication devices and permitting information transfer between communication devices which share common unique information, where the unique information is formed by a pair of a public unique information and a secret unique information, and where the registration of the unique information is performed by transmitting the unique information of the short range communication device to the each of the communication devices through short range communication of the short range communication device, the bridge device comprising:
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a unique information storing unit configured to store pairs of the public unique information and the secret unique information of different short range communication devices registered by the bridge device through the short range communication of the short range communication devices respectively; a proxy check request receiving unit configured to receive a proxy check request for determining, in place of the communication devices, whether to permit information transfer on the basis of the public unique information stored in the unique information storing unit, the public unique information registered by a first communication device, and an address information of a second communication device which is an intended correspondent of the first communication device, from the first communication device; a first judgment unit configured to judge whether the public unique information registered by the first communication device is the public unique information of one of the different short range communication devices; a second judgment unit configured to receive the public unique information from the second communication device, and judge whether the public unique information received from the second communication device is the public unique information of one of the different short range communication devices or not; a device type judgment unit configured to judge whether the second communication device is another bridge device or not, when the first judgment unit judges that the public unique information registered by the first communication device is registered in the unique information storing unit and the second judgment unit judges that one public unique information registered in the unique information storing unit is registered by the second communication device; and a unique information transmission determining unit configured to determine transmission of the secret unique information registered by the first communication device to the second communication device after confirming that each of the first and second communication devices registers the unique information of any one of the different short range communication devices, according to a judgment result of the device type judgment unit, wherein the communication of the short range communication device is based on a physical layer and a datalink layer, and the communication among the first and second communication devices and the bridge device is based on a network layer and a transport layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication device in an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering, in each of the communication devices, unique information which is unique to a short range communication device connectable to the communication devices and permitting information transfer between communication devices which share common unique information, where the unique information is formed by a pair of a public unique information and a secret unique information, and where the registration of the unique information is performed by transmitting the unique information of the short range communication device to the each of the communication devices through short range communication of the short range communication device, the communication device comprising:
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a unique information storing unit configured to store a pair of the public unique information and the secret unique information of a short range communication device transmitted from the short range communication device to the communication device through the short range communication of the short range communication device; a check unit configured to check whether the secret unique information registered in the unique information storing unit is registered by an other communication device which is an intended correspondent of the communication device or not; a route search unit configured to produce a routing list indicating a route by which the other communication device can be reached from the communication device, by searching at least one bridge device for bridging between the communication device and the other communication device, when the check unit indicates that the secret unique information registered in the unique information storing unit is not registered by the other communication device; a routing list size judgment unit configured to judge whether a size of the routing list is less than or equal to a prescribed size or not; and a proxy check request transmission unit configured to transmit a proxy check request for determining whether to permit information transfer in place of the communication devices, the public unique information registered by the communication device, and an address information of the other communication device, to a first bridge device on the route when the routing list size judgment unit judges that the size of the routing list is less than or equal to the prescribed size, wherein the communication of the short range communication device is based on a physical layer and a datalink layer, and the communication among the communication devices and the bridge devices is based on a network layer and a transport layer. - View Dependent Claims (10, 11, 12)
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13. A method for controlling a bridge device for bridging between communication devices in an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering, in each of the communication devices, unique information which is unique to a short range communication device connectable to the each of the communication devices and permitting information transfer between communication devices which share common unique information, where the unique information is formed by a pair of a public unique information and a secret unique information, and where the registration of the unique information is performed by transmitting the unique information of the short range communication device to the each of the communication devices through short range communication of the short range communication device, the method comprising:
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storing pairs of the public unique information and the secret unique information of different short range communication devices registered by the bridge device through the short range communication of the short range communication devices respectively; receiving a proxy check request for determining, in place of the communication devices, whether to permit information transfer on the basis of the public unique information stored in the unique information storing unit, the public unique information registered by a first communication device, and an address information of a second communication device which registers the public unique information of another of the different short range communication devices and is an intended correspondent of the first communication device, from the first communication device; first judging whether the public unique information registered by the first communication device is the public unique information of one of the different short range communication devices or not; receiving the public unique information of the another of the different short range communication devices from the second communication device; receiving the public unique information from the second communication device; second judging whether the public unique information received from the second communication device is the public unique information of one of the different short range communication devices or not; third judging whether the second communication device is another bridge device or not, when the first judging judges that the public unique information registered by the first communication device is registered by the storing and the second judging judges that one public unique information registered by the storing is registered by the second communication device; and determining whether or not to transmit the secret unique information registered by the first communication device to the second communication device, after confirming that each of the first and second communication devices register the unique information of any one of the different short range communication devices, according to a judgment result of the third judging, wherein the communication of the short range communication device is based on a physical layer and a datalink layer, and the communication among the first and second communication devices and the bridge device is based on a network layer and a transport layer.
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14. A method for controlling a communication device in an information processing system in which a range of information transfer between communication devices through a network is limited within a prescribed range by registering, in each of the communication devices, unique information which is unique to a short range communication device connectable to the communication devices and permitting information transfer between communication devices which share common unique information, where the unique information is formed by a pair of a public unique information and a secret unique information, and where the registration of the unique information is performed by transmitting the unique information of the short range communication device to the each of the communication devices through short range communication of the short range communication device, the method comprising:
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storing the public unique information and the secret unique information of a short range communication device transmitted from the short range communication device to the communication device through the short range communication of the short range communication device; checking whether the secret unique information registered by the storing is registered by an other communication device which is an intended correspondent of the communication device or not; producing a routing list indicating a route by which the other communication device can be reached from the communication device, by searching at least one bridge device for bridging between the communication device and the other communication device, when the checking indicates that the secret unique information registered in the unique information storing unit is not registered by the other communication device; judging whether a size of the routing list is less than or equal to a prescribed size or not; and transmitting a proxy check request for determining whether to permit information transfer in place of the communication devices, the public unique information registered by the communication device, and an address information of the other communication device, to a first bridge device on the route when the judging judges that the size of the routing list is less than or equal to the prescribed size, wherein the communication of the short range communication device is based on a physical layer and a datalink layer, and the communication among the communication devices and the bridge devices is based on a network layer and a transport layer.
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Specification