Abstract: Systems and methods for providing high-quality region of interest (HQ-ROI) viewing within an overall scene by enabling one or more HQ-ROIs to be viewed in a controllable fashion, as higher quality ‘windows-within-a-window’ of regions (spatial subsets) of a scene.

Abstract: A clock synchronization scheme for use with an access network element having scalable architecture. A point-to-point, high-speed communication link provided between two adjacent banks of the access network element logically interconnects a plurality of banks in a linear stack, thereby creating a stackplane hierarchy for local traffic. A primary bank includes a central master timing and frame alignment control block operable based on a master reference clock. A secondary bank immediately coupled to the primary bank is operable to synchronize its local clock based on a delay preset signal provided by the primary bank. Each remaining secondary bank is operable to synchronize its local clock based on the delay preset signal provided by a local master timing control block disposed in the secondary bank immediately above it.

Abstract: A clock synchronization scheme for use with an access network element having scalable architecture. A point-to-point, high-speed communication link provided between two adjacent banks of the access network element logically interconnects a plurality of banks in a linear stack, thereby creating a stackplane hierarchy for local traffic. A primary bank includes a central master timing and frame alignment control block operable based on a master reference clock. A secondary bank immediately coupled to the primary bank is operable to synchronize its local clock based on a delay preset signal provided by the primary bank. Each remaining secondary bank is operable to synchronize its local clock based on the delay preset signal provided by a local master timing control block disposed in the secondary bank immediately above it.