A print data generation system is provided that is compatible with any of a plurality of printers of a printing network. The physical device includes a data source which outputs a data sequence along time series. The method may also include streaming data managed by a second database file system for the query. The layers can be provided in a lateral arrangement, such as an end-to-end, face-to-face, L-shaped or U-shaped arrangement. The video device may determine a first time instance.