Method for using communication channel round-trip response...

Details Method for using communication channel round-trip response... Method for using communication channel round-trip response...

2008-07-08

2008-07-08

Barron, Jr., Gilberto (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C726S004000, C380S258000

Reexamination Certificate

active

07398392

ABSTRACT:
The present method for using communication channel round-trip response time for digital asset management utilizes a predetermined distance between a sending device and a receiving device to prevent unauthorized receipt of digital content when the unauthorized receiving device is located beyond the predetermined distance. When the receiving device requests digital content from the sending device, the sending device replies with a request for an acknowledgement. The receiving device sends the requested acknowledgement. The time between sending the request for an acknowledgement and receipt of the acknowledgement is the actual round-trip response time. The actual round-trip response time is compared to a predetermined response time limit for the predetermined distance and if the actual response time is within the predetermined response time limit, the request for digital content is granted and if the actual round-trip response time is not within the predetermined response time limit, the request for digital content is denied.

REFERENCES:
patent: 6931131 (2005-08-01), Becker, Jr. et al.
patent: 2005/0265503 (2005-12-01), Rofheart et al.

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