ENSURING PHYSICAL LOCALITY OF ENTITIES SHARING DATA
First Claim
1. A method of controlling distribution of data between entities comprising:
- estimating a distance between a first entity and a second entity; and
distributing the data between the first entity and the second entity only if the estimated distance between the first entity and the second entity is within a distance threshold for the data.
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Accused Products
Abstract
A method and system for ensuring that data is only distributed within a certain physical area are disclosed. In one embodiment, a method provides that data is distributed only if the distance between a source and a sink is within a distance threshold. Under this system, the distance between the source and the sink may be estimated directly or indirectly. In some embodiments, the distance may be estimated by estimating the propagation delay for a signal traversing between the devices. The physical distance between the devices may be determined from the propagation delay. If the physical distance is outside a threshold value, the source may be prohibited from transmitting the data or the sink may refuse to display the data.
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Citations
25 Claims
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1. A method of controlling distribution of data between entities comprising:
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estimating a distance between a first entity and a second entity; and distributing the data between the first entity and the second entity only if the estimated distance between the first entity and the second entity is within a distance threshold for the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising;
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a distance module configured to estimate the distance from the apparatus to a second apparatus in a network; and a decision module, the decision module to decide whether a data transmission between the apparatus and the second apparatus is authorized based on a comparison of the distance estimate to a distance threshold. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system for controlling distribution of data comprising:
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a source configured to transmit data; a sink configured to receive the data; a distance module configured to estimate a distance between the source and the sink; and a decision module configured to allow the data to be distributed only if the estimated distance is within a threshold distance for the data. - View Dependent Claims (20, 21, 22, 23, 24)
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25. The system of claim wherein each intermediate node inserts the processing delay time into the signal.
Specification