An image sensing device and image sensing method are described herein. An accumulator space may be formed using the shell of the compressor, thereby simplifying an assembly process. The versioning method enables processing undo and redo operations of the data loading between a later version and a previous version. When the light assembly is assembled, a side edge of the circuit board is seated in one of the tray slots. The two flat surfaces are configured for diverging light to lateral sides of an original path. The fast decoding technique may be employed to simultaneously decode multiple dimensions of a pattern on the media surface.