Pre-printed surface for handwriting, comprising a pre-printed graphical representation of the passing of a period of time, and associated computer program

A stationery system comprising:

• a collection of pre-printed surfaces on which handwritten entries can be made, wherein each pre-printed surface comprises
• a pre-printed graphical representation of passing of at least one segment of a plurality of segments of a period of time,
• at least one entry creation zone for user entry and identification of at least one segment,
• at least one pre-printed mark for local identification of the at least one entry creation zone,
• at least two pre-printed marks for global identification of the pre-printed surface and which establish reference positions on the pre-printed surface, and
• a graphical code comprising
• information for identifying, using the graphical code, the respective pre-printed surface within the collection of pre-printed surfaces,
• composition of the respective pre-printed surface with respect to arrangement of the at least one entry creation zone, and
• dimensional parameters of the pre-printed surface;
• and
• a computer program including a sequence of instructions which, when executed by a computer processor,
• process images of respective pre-printed surfaces,
• correct perspectives of the images of respective pre-printed surfaces, produced by angled imaging of the pre-printed surfaces, using the pre-printed marks for global identification and the dimensional parameters of the graphical code of the respective pre-printed surface,
• identify an entry creation zone in an image of a respective pre-printed surface, using the at least one pre-printed mark for local identification and the at least two pre-printed marks for global identification,
• identify on a respective pre-printed surface, within the collection of pre-printed surfaces, a handwritten entry created by the user in an entry creation zone and corresponding to a segment, and
• create a time entry in a database associated with an electronic planner, based on identifying of the handwritten entry created by the user, using the segment appearing in the entry creation zone.