Systems and methods are provided for interactive construction of an object boundary by minimizing a sum of costs, including costs associated with inconsistency of the image data and costs associated with undesired curve shape properties. The controller includes a drive interface for traversing and accessing audio data files stored on a drive of a computer system. Thus, when in a power down mode a minimal power source may be used to power the separate link integrity module separate from the power source to the core network device functionality. An output port of the source device conveys the overlay information to the second port of the display device.