The present invention is directed to a video recorder having user extended and automatically extended time slots. It employs a land unit 100 platform subsystem 1000 with an energetic fluid fuel reservoir 1300 and a boring subsystem 3000 having a plurality of pulsejets 3100. Electrical power can be more advantageously generated from surface areas of building structures previously untapped for solar energy harvesting. In addition, the asymmetry causes the ends of the bits to align in opposite directions in small half-select fields and parallel to each other at large half-select fields, which increases the difference in the switching fields between selected and unselected bits. Even if the input image includes a fold-over component on the high-frequency side or does not include an adequate high-frequency component, an enhanced image can be obtained without enhancing noise. Each of the plurality of tag units may be accessed synchronously.