Abstract: A product 100 having a data encoding pattern 108 printed on it, the pattern defining a grid having a grid spacing, wherein the grid spacing has discontinuities arranged to compensate for a mismatch between the resolution at which the pattern 108 is printed and a required value for the grid spacing, the discontinuities being irregularly spaced across the product.

Abstract: A method and apparatus for producing a document having human-readable content and a position identifying encoding pattern. A printer places text or other content onto a substrate, such as paper, and a filter material application system applies transparent filter material to at least a portion of that content to only modify the reflectivity of the content at a predetermined wavelength. Because the reflectivity of the position identifying encoding pattern remains unchanged, it is distinguishable from the content and can be read at the predetermined wavelength. The position identifying pattern can take a number of forms including a number of dots printed at predetermined positions on the substrate on an imaginary grid.

Abstract: A product 100 having a data encoding pattern 108 printed on it, the pattern defining a grid having a grid spacing, wherein the grid spacing has discontinuities arranged to compensate for a mismatch between the resolution at which the pattern 108 is printed and a required value for the grid spacing, the discontinuities being irregularly spaced across the product.

Abstract: A method for preparing a mask for multi-pass printing, comprises determining a characteristic satellite drop spray pattern for printing in a multi-pass mode with a printhead. Positions in the mask are filled with pass numbers. The pass numbers in a given position are selected based on considerations of interactions among main drops and satellite drops.

Abstract: A gesture related to portions of handwritten text is recognized. Furthermore, an action is performed against the portions of the handwritten text. The action is associated with the recognized gesture.

Abstract: A data encoding pattern comprising a plurality of markings respectively composed from at least two sub-markings, wherein the colour of respective ones of the sub-markings and their arrangement for a marking is reserved.

Abstract: A substrate carrying a machine-readable pattern, the pattern comprising a plurality of printed shapes, local portions of the pattern uniquely encoding respective locations of the substrate, the substrate further carrying a human-recognisable printed image, wherein the human-recognisable image is masked at locations of the printed shapes of the machine-readable pattern, thereby preventing the machine-readable pattern from being obscured by the human-recognisable printed image.

Abstract: A method for preparing a mask for multi-pass printing, comprises determining a characteristic satellite drop spray pattern for printing in a multi-pass mode with a printhead. Positions in the mask are filled with pass numbers. The pass numbers in a given position are selected based on considerations of interactions among main drops and satellite drops.

Abstract: A method of applying content and a data encoding pattern 18 to a product 10 comprises: applying the content 14 to a substrate 12; modifying the reflectivity of the content 14 at a predetermined wavelength; and applying the pattern 18 to the product, wherein the method is such that the pattern can be distinguished from the content at the predetermined wavelength.

Abstract: A gesture related to portions of handwritten text is recognized. Furthermore, an action is performed against the portions of the handwritten text. The action is associated with the recognized gesture.