Abstract: This disclosure relates to advanced signal processing technology including signal encoding and digital watermarking. Aspects of the disclosure provide methods, articles of manufacture and systems for determining printing plate inconsistencies, e.g., for printing presses printing encoded images or artwork. Of course, other features and combinations are described as well.

Abstract: Substrates and technology for detecting printing plate misuse or mismatch. Such misuse or mismatch may result in multiple, different encoded signal being erroneously included in packaging. One claim generally recites a substrate for a package, hang tag or label, the substrate including: barcode including check digit; printed control icon, the printed control icon comprising a design printed with each of four (4) ink separations, the design comprising plurality of design elements, the plurality of design elements comprising a central element, rotation indicator corresponding to the check digit, and a plurality of registration indicators, the four (4) ink separations comprising Cyan (C) color channel, Magenta (M) color channel, Yellow (Y) color channel and Black (K) color channel; in which the printed control icon indicates a printing plate mismatch when it comprises more than one (1) observable rotation indicator. Of course, other features, claims and combinations are described as well.

Abstract: This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking.

Abstract: Advanced signal processing technology including signal encoding and digital watermarking. Disclosure includes monitoring spectral differences within control strip area to determine signal robustness of encoded signals printed outside of control strip area. Other combinations and technology provided too.

Abstract: Systems, methods, and devices for decoy routing and covert channel bonding are described. The decoy routing system includes a client computing device, a decoy router, and a decoy proxy such that packets addressed to a decoy destination are re-routed by the decoy router to a covert destination via the decoy proxy. The decoy routing method may be applied to a covert channel bonding process, in which a plurality of packet data streams are sent to one or more decoy destinations, re-routed appropriately via one or more decoy routers and/or decoy proxies, and assembled together into a single packet data stream at either a decoy proxy, or a final covert destination.

Abstract: A packet is classified into a class. A priority value is assigned to the packet wherein packets in a flow are assigned priorities according to some probability distribution within some band. A determination is made, at a network device for a highest latency class, whether a sum of queued packet sizes of previously received packets having an equal or smaller latency class than the packet and larger or equal priority than the packet is larger than a threshold value. When the sum is larger, the packet is dropped, otherwise a determination is made whether a latency class of the packet is less than the latency class of the network device. When the latency class is not less, the packet is stored in a queue for the latency class. When the latency class is less, then the process is repeated until the packet is dropped or stored in a queue.

Abstract: Systems, methods, and devices for decoy routing and covert channel bonding are described. The decoy routing system includes a client computing device, a decoy router, and a decoy proxy such that packets addressed to a decoy destination are re-routed by the decoy router to a covert destination via the decoy proxy. The decoy routing method may be applied to a covert channel bonding process, in which a plurality of packet data streams are sent to one or more decoy destinations, re-routed appropriately via one or more decoy routers and/or decoy proxies, and assembled together into a single packet data stream at either a decoy proxy, or a final covert destination.