Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2007-05-15
2007-05-15
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S160000, C713S161000, C709S229000, C709S230000
Reexamination Certificate
active
09595498
ABSTRACT:
An apparatus and method for sending and receiving fragmented Audio/Video Control packets using a communication software layer that is separate from a processing software layer. The method and apparatus may be used in a system for transferring copy protected digital audio/video signals between devices. In one embodiment of the present invention, a connection is established between a source and a sink device. Next, a communication layer of code on the source device receives at least one packet of data from the sink device. Next, the communication software on the source sends to the sink a response for each of the packets of data. Next, this embodiment of the source communication software sends all the packets as one group to a processing layer of code on the source device.
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Barron Jr. Gilberto
Nobahar A.
Sony Corporation
Sony Electronics Inc.
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