EP2210215A2

EP2210215A2 - Method for making at least one identifier and securing the reading thereof by a digital pen associated with a screen sheet, and means for implementing same

Info

Publication number: EP2210215A2
Application number: EP08869879A
Authority: EP
Inventors: Jacques Cinqualbre; Damien Uhlrich
Original assignee: Neolinks; Hopi
Current assignee: Neolinks; Hopi
Priority date: 2007-10-25
Filing date: 2008-10-21
Publication date: 2010-07-28
Also published as: WO2009087315A2; US8596522B2; FR2923035B1; US20110007036A1; WO2009087315A3; FR2923035A1

Abstract

The invention relates to a method for identifying sheets on which is added one identifier or more comprising a combination of juxtaposed screen cells. The method comprises two parts. The first part describes a means for making the differentiating identifiers and the addresses associated with the content areas forming the sheets. The second part describes a means for processing the information of the digital pen transmitted to the computer processing unit by one or more automatic or semiautomatic post-processing operations. The two non-separable parts of this method thus compensate for the potential handling errors of a user who must write or transcribe information onto screen sheets using a digital pen.

Description

A method of constructing at least one identifier and securing its reading by a digital pen associated with a halftone sheet and means for implementing it.

FIELD OF THE INVENTION

The invention relates to a method for constructing at least one identifier and securing its reading, by means of a writing and reading instrument associated with a screened or partially screened sheet. The invention also relates to the system comprising the means for implementing the method according to the present invention.

DEFINITIONS In order to better understand the invention, the following definitions of the most important words and expressions are set out below:

Sheet: physical writing surface that can be for example a sheet of paper.

Frame: a position code used to represent the coordinates O (x, y) of all the points constituting a surface.

Raster Sheet: a physical writing surface on which a position code has been established or printed preferably resting on a flat physical medium called a writing tablet.

Digital pen: writing instrument with a pen body with a writing tip and a means of vision physically associated with an electronic system (camera, light source, CCD sensor, microprocessor, memory, transmission system, etc.) which It allows him to know and record, by interpreting the frame established or printed on a sheet, the coordinates (x, y) of all the points that constitute his lines. O General frame: theoretical total area that a position code is able to encode.

Page: Rectangular surface resulting from the virtual division of the general frame. This cutting is intended for example to fram one or sheets of different sizes (A5, A4, A3 etc.). 5 Cell: Rectangular surface resulting from the virtual cutting of a page. Screen cell: A cell established or printed on a part of a sheet.

Identifier: combination of several raster cells grouped preferably by juxtaposition, this combination being intended, among other things, to make unique the sheet concerned, on which the identifier has been established or printed. Identifier area: Part (s) of the surface of a sheet in which an identifier has been established or printed.

Content Area: The remaining halftone or partially halftone area once the ID field (s) has been (or has been) inserted on the relevant sheet.

STATE OF THE ART

There are several methods for a user to transmit to a computer processing unit graphic information written, drawn or drawn by hand on a sheet. These methods rely on the joint use of a sheet, paper sheet for example, on which has been established or printed a position code (frame) and a digital pen.

Descriptions of these processes can be found in the US patents

5,852,434; US 5,477,012; US 5,661,506; US 5,051,736; US 5,652,412 and in US Patent No. 5,442,147.

Among these methods, there may be mentioned, for example, the one developed by the ANOTO company which proposes a general framework making it possible to encode a total area which can reach, according to their technical data, up to 60 million km ² .

To exploit this general framework in the context of using much smaller surface screen sheets such as sheets of paper in A4 format for example, ANOTO virtually cut out its general frame in addressed pages.

Thus, each of these pages has its own address constructed in the following manner: segment number, shelf number, book number, page number. For example, we imagine a sheet of paper in A4 format on which an address page 156.25.89.17 was printed. This means that this surface unit A4 represents the page No. 17 which has been taken virtually in the book No. 89 which belongs to the shelf No. 25 which itself is part of the segment No. 156 of the general frame of 60 million km ² .

In this context, the digital pen, rather than raising the absolute position of what it is writing in relation to the general network of 60 million km ² , will note on the one hand the relative position of this which is being written on the said sheet in A4 format, and on the other hand the address of the page (segment no., shelf no., no. book, page number) printed on it.

According to this principle, it is possible to differentiate sheets provided that for each of them has been printed a page whose address (segment number, shelf number, book number, page number ) is different. KT International INC, proposes another method to uniquely identify sheets in case the addresses of the pages printed on these sheets are identical. This process is described in US Pat. No. 7,134,606.

To do this, is added to each halftone sheet by identical address pages, an own identifier composed of a combination of raster cells of different addresses, which will thus make each of the sheets unique. This patent is analyzed below.

Description Patent No US 7,134,606 ^0:

As previously defined, a single address of the segment.agre.book.book is associated with each of the pages from the general frame.

We define n master pages having as address "p (a)" (a between 1 and n) to serve as a basis for the construction of the identifier.

Each of these address master pages "p (a)" is divided into cells "c (i)" defined according to the following pair of coordinates: [x (c (i)) start, y (c (i)) start ; x (c (i)) end, y (c (i)) fin]. Each cell "c (i)" is associated with a number according to its coordinates, for example, from i = 1 to i = 400 in the case where each of the master pages would be divided into 400 cells.

On each sheet, outside the area of identical address content for all the sheets, is inserted an ordered series of juxtaposed raster cells, from the address master pages "p (a)".

Consider that we use four addressed master pages p (1), p (2), p (3) and p (4) (where p (1) ≠ p (2) ≠ p (3) ≠ p (4)) for create the unique identifier. The latter will be made of a combination of four cells as follows: c (w, p (1)); c (x, p (2)); c (y, p (3)); c (z, p (4)) with w, x, y and z between i = 1 and i = 400 in the case of this example. So if w = 3, if x = 56, if y = 238 and if z = 123, the digital pen will understand that it has just read an identifier which consists of 4 numbers: 3.56.238.123

The combination of these cell numbers creates a new address for identifying each sheet. In this context, the three steps to implement this identifier system are as follows: Step 1: the selection of n master pages that will always be used to build the identifiers.

Step 2: the selection of a cell per master page.

Step 3: The juxtaposition of the n cells of the n master pages on the sheet including the content area.

Before writing to the content area, the user checks each box of the identifier or draws a continuous line on them with the digital pen. This allows the computer processing unit, when the digital pen is put back in its storage holder and data unloading ink type "USB", O to associate the data written in the content area to this identifier for a same leaf.

PROBLEM 5 The method described by KT International INC in the US patent No. ⁰

7,134,606 refers to a very particular application of electronic voting. In this context, two hypotheses are posed:

- The digital pen sends its data in continuous flow to the computer processing unit or is put back in place in its storage rack and 0 unloading data type inkwell "USB" as soon as the user has finished filling the content area of a sheet associated with its identifier.

- The user verifies in real time, through a control screen linked to the computer processing unit, that his traces on the identifier and in the content area on the sheet are displayed correctly and / or that the The computer processing unit executes the right processes according to the functions associated with the zones indicated by the digital pen.

But for the wider use of this process in multiple applications such as for example:

- a salesperson who fills out O-screen interview reports cards with a digital pen,

- a technician who fills out quality control forms with a digital pen,

- a doctor who fills prescription sheets with a digital pen, 5 it is possible that they have to inform, during the same work session, using the digital pen, a significant number of different sheets having an own identifier (which makes them unique) before replacing the digital pen in its storage and data unloading support connected to the computer processing unit.

As a result, users can not verify in real time that what they hand-write on the sheets will be processed correctly by the computer processing unit.

In this context, the user can make handling errors before putting the digital pen back into its data storage and unloading rack without being able to rectify them in real time. Several errors of manipulation can be mentioned such as:

the case where the user checks / traces the cells of the identifier in the disorder and / or upside down before starting to write in the content area,

the case where the user only checks / traces a part of the cells of the identifier before starting to write in the content area, the case where the user forgets to tick / trace the cells of the identifier before you start writing in the content area,

Beyond the fact that the patent of KT International INC No. US 7,134,606 does not describe methods for providing a technical solution to address this problem, the identifier construction method described in the patent of KT International INC. US Pat. No. 7,134,606 does not make it possible to use the means of the invention described hereinafter.

SUMMARY DESCRIPTION OF THE INVENTION

The present invention, described in detail in the following parts of this patent, proposes a new way of making unique, by the insertion of a proper identifier (composed of a combination of grouped raster cells), leaves whose area of content is associated with identical and / or different addresses (segment #, shelf #, book #, page #). The process according to the present invention is divided into two indissociable parts. The first is a way to construct the differentiator identifiers and to choose the addresses of the pages established or printed in the content areas that make up the sheets. The second relates to a way of processing the information of the digital pen transmitted to the computer processing unit by automatic or semi-automatic post treatments.

The two parts, indissociable from each other of the process according to the the present invention, thus make it possible to overcome the potential errors of manipulation of the user, cited by way of example above in the "problem" part.

They also allow, in a nonlimiting manner, to confer on the identifiers, other properties or to open for other uses such as: the possibility of varying the size of the identifiers by varying the number of juxtaposed cells in order to to adapt to surface constraints, such as the case of using sheets of very small size, without calling into question the coherence of the process,

the possibility of positioning the zone (s) of the identifier anywhere in the sheet without the latter losing its position coding properties representing the coordinates (x, y) at the location where the identifier has been inserted,

- the use of identifiers to designate a person, a function, or any other object than a sheet.

For this purpose, the invention relates to a method of construction and composition on at least one sheet of at least one identifier from at least one sample of at least one cell in at least one page from a general frame and creation of a halftone or partially halftone content area on which the hand of a user writes or bears graphic signs, this content area being obtained by at least one sample of at least one cell in at least one least one page from a general frame, O method of securing the reading of the identifier by means of a digital writing and reading instrument associated with at least one sheet, this method being particularly particular in what:

. n "master" pages P of address "P (ai)" (1 <i <n) each divided into C (I) cells (1 <l <n1) are defined to form at least a portion of the identifier by 5 removal of at least one cell and grouping,

. a special master address page "P (a1)" dedicated to the beginning of each identifier in which a "D" cell of beginning of each identifier constructed is defined,

. a special master address page "P (a2)" dedicated to the end of each identifier in which an end cell "F" of each identifier constructed is defined,

. we define m pages "slaves""p" of address "p (bj)" (1 <j <m) each divided into m1 cells "c (J)" 1 <J <m1 to form by sampling and grouping each zone content of each writing surface, 5. between the first cell "D" and the last cell "F" of each identifier, for a given sheet, a cell c (J) taken from a slave page is inserted. "p" whose address is identical to that of the cells c (J) used to constitute the content area belonging to this same sheet,

. for the other cells C (I) of the same identifier, which are neither the cell "D" nor the cell "F" nor the cell c (J), one or more addresses "P" are chosen. ) "randomly or according to an algorithm,

. we proceed to the acquisition of the identifier by passing the digital writing and reading instrument on all the cells of the identifier,

. the content area is used by writing in this area on the screen paper with the digital writing and reading instrument. the write result is sent in the form of a data stream to a computer processing unit,

. the data corresponding to this result is filtered and processed before its final use.

The invention also relates to the system comprising the means for implementing the method above.

LIST OF FIGURES

The present method will be better understood on reading the description which follows, given by way of nonlimiting example with reference to the appended drawings in which:

. FIG. 1 is a schematic view showing a composite sheet, an identifier constructed from a combination of raster cells and a fully rasterized content area,

. FIG. 2 is a graphical representation showing the method of constructing at least one identifier according to the present invention, FIG. 3 is the general diagram of the architecture of the system making it possible to implement the method according to the present invention, FIG. 4 is a user-side flowchart of instruction sequences relating to the filling sequence of a sheet composed of an identifier constructed from a combination of raster cells and a content area, FIG. 5 is a flowchart of series of phases relating to the automatic or semi-automatic processing of the data transmitted by the digital pen to the computer processing unit,

. FIG. 6 is the representation of an automaton making it possible to carry out a filtering on the data sent to the computer processing unit by the digital pen,. FIG. 7 is a representation of a virtual data filtering grid on which the automaton shown in FIG. 8 can traverse, by way of example, several paths to perform a processing on the data received by the unit of 5 data processing,

. Figure 8 is a representation of a controller for processing the data sent to the computer processing unit by the digital pen.

DETAILED DESCRIPTION OF THE INVENTION

We will now describe the method of constructing at least one identifier and securing its reading and the means of its implementation according to the present invention, with reference to the various figures.

5 Description of Figure 1 - Halftone sheet bearing the identifier

In the following description, which is an example of implementation of the method relating to this invention, it will be based on conventional plain paper. The paper may be in the form of insulated sheet (s), a notebook or a conventional notebook or a block held by a spiral or retained by a clip.

On the sheet available to the user, there will be two or three distinct areas:

The first zone is called "zone of the identifier" containing the identifier of the sheet consisting of n raster cells, for example juxtaposed in one or more blocks (to facilitate the understanding of the present invention will be limited in the following for example, to a single block of adjacent cells juxtaposed). This area can be variably positioned on the sheet. The general outline of the elements of the identifier will preferably be visible graphically by the user. It is also possible to graphically mark by indicators (simple geometrical forms of type squares, circles or others) the place where the writing line of the digital pen must start and the place where it must end (these graphical geometric indicators start and end can be rasterized figures or not and in the case of a frame it can be significant or not). 5 - The second zone is called "content zone". It is woven over its entire surface as part of this example and located inside the sheet. It's certain this area of content that the user will enter, using the digital pen, handwritten data. Depending on the application, the content area will be blank or structured by fields to be completed, such as: quality control forms, maintenance reports forms, administrative forms, etc.

The third zone will be necessary only in the case of use of a digital pen having the ability to transmit its data by a bluetooth or other wireless communication protocol. It is called "sending zone". It corresponds to a dedicated screen box whose outline will preferably be visible graphically by the user.

Description of Figure 2 - Constitution of the identifier by grouping cells.

We will now describe the method of constructing the identifier using the term juxtaposition for the cells constituting the identifier, without wanting to be limited in the way of grouping them.

We define n master pages "P" having as address "P (ai)" (i between 1 and n) to serve as a basis for the construction of the identifier. For example, 256 master pages having respectively P (a1), P (a2), P (a3) and P (a256) address will be dedicated.

Each of these address master pages "P (ai)" is divided into neither cells "C (I)" (I between 1 and ni) defined according to the following pair of coordinates: [x (C (1)) start , y (C (l)) start; X (C (I)) end, y (C (1)) fin].

In the context of this example, each master page will be divided into 400 cells juxtaposed from C (1) to C (400) (in this frame n1 = 400). One can also choose by convention and for example that the master pages are composed of 40 rows of 10 juxtaposed cells and that the latter are numbered from 1 to 10 for the first line, from 11 to 20 for the second line, from 21 to 30 for the third line, etc.

For a given identifier, each raster cell number I entering into its composition will be different. For example, for a horizontal identifier composed of 5 juxtaposed raster cells and according to the convention previously chosen, there will be: - C (I) taken from the master page av having for address P (av),

then C (1 + 1) taken from the master page aw having the address P (aw), and then C (1 + 2) taken from the master page ax having for address P (ax),

then C (l + 3) taken from the master page ay having for address P (ay),

then C (1 + 4) taken from the master page az having the address P (az).

The numbers v, w, x, y and z may be chosen randomly or according to another algorithm among the n master pages numbered from i = 1 to i = 256 in the context of the example.

In addition, we will dedicate two special master pages among the n having for example for address P (a1) and P (a2) in each of which we will take a cell, one "D" will be placed at the beginning and the other "F" Will be placed at the end of each identifier constructed according to the present method. Thus, in the context of the previous example of the horizontal identifier composed of five raster cells, av will be equal to ai and az will be equal to a2.

These operations make it possible for the processes described later in this patent, to: - determine whether the plots of the digital pen are positioned on the area of the identifier or on the content area,

know the relative position of the points constituting the plots with respect to the sheet regardless of the addresses P (ai) associated with the raster cells of the identifier,

- determine the beginning and the end of the identifier by means of the cells D and F. - determine whether the user has drawn / ticked all the raster cells of the identifier, in the order or in the disorder, once or many times etc.

On the other hand, we define m slave pages "p" having as address "p (bj)" (j between 1 and m) for framing the content areas of each sheet. For example, 256 slave pages with p (b1), p (b2), p (b3) to p (b256) address will be dedicated.

Each of these slave pages of address "p (bj)" is divided into m1 cells "c (J)" (J between 1 and m1) defined according to the following pair of coordinates: [x (c (J)) beginning , y (c (J)) start; x (c (J)) end, y (c (J)) fin]. In order for the process to work, it is necessary that x (c (J)) start = X (C (I)) start, y (c (J)) start = y (C (1)) start, x (c (I)) J)) end = X (C (I)) end, y (c (J)) end = y (C (1)) end and that ni = m1.

Thus, when an identifier is positioned on a sheet that is assumed to be framed over its entire surface by a slave page of address p (bj) divided into cells c (J) (indeed, to understand this explanation, it is assumed that the content area is entirely framed with a slave page of address p (bj) and that it covers the whole surface of the sheet) and if I = J, we replace the cells c (J) except one of the content area by the cells C (I) constituting the identifier. The cell of the zone of content c (J) which will not be replaced in the identifier can be placed indifferently between the first cell "D" of the identifier taken from the address master page P (a1) and the last cell "F" of the identifier taken from the address master page P (a2). Therefore, in the previously treated example, horizontal identifier composed of 5 raster cells and according to the convention chosen (40 rows of 10 juxtaposed cells numbered from 1 to 10 for the first line, from 11 to 20 for the second line, from 21 to 30 for the third line, etc.) if we assume that the identifier is positioned in the upper left corner of the sheet and if we apply the method thus described, we will have:

C (1) taken from the master page ai having the address P (a1), C (2) taken from the master page aw having the address P (aw), C (3) taken from the master page ax having the address P (ax), c (4) taken from the slave page by having the address p (by), - and C (5) taken from the master page a2 having the address P (a2).

The numbers w and x will be chosen between i = 3 and i = 256 and will necessarily be different from i = 1 and i = 2 (reserved for cells D and F). The number "y" is between j = 1 and j = 256.

By adding further in the example, and assuming ai is the master page # 1, that a2 is the master page # 256, that aw is the master page # 123, that ax is the page master # 95 and that by is the slave page # 52, the digital pen will understand that it has just read an identifier which consists of 2 numbers: 123.95 (the order is important) and that the latter is associated with the content area whose slave frame printed in the identifier is taken from the slave page # 52.

Description of Figure 3 - Schematic diagram of the system architecture.

FIG. 3 is a general diagram of the architecture of the system for securing the reading of identifiers by means of a digital pen which according to its definition is a writing and reading instrument and is in accordance with the method according to the invention associated with raster paper.

It comprises a sheet as described in Figure 1. It also includes a digital pen having writing capabilities on a conventional paper sheet. This digital pen is equipped with an electronic system able to interpret the frame (position code) and to record the position of what it is writing according to the x and y coordinates.

On the other hand, the digital pen has, in addition, a system of transmission of data between him and the computer processing unit which can be:

- a storage rack (USB ink type) or

a wireless communication protocol of the Bluetooth or other type.

The system includes the computer processing unit which can be either a PC-type computer, Mac, operating under any operating system

(Windows, OSX, Linux, etc.), a mobile phone with the ability to run computer programs, or any other system that can accommodate the programs necessary for the implementation of this invention.

The system also includes a database that combines: - a number "ai" different to each page "master" address P (ai) used to implement this method.

a number "bj" different to each page "slave" address p (bj) used to implement this method.

- A number "I" different to each cell C (I) taken from the "master" address pages P (ai) to implement this method.

- A number "J" different to each cell c (J) taken from the pages "slaves" address p (bj) to implement this method.

a number "bj" to each identifier composed of a sequence of numbers "ai" different from ai and a2 (for example 25.213.25.67 in the case of an identifier composed of 7 raster cells).

- Plots made by the user with the digital pen on the frame of the content area specific to each identifier, then saved in the database.

This database can be installed locally in the computer processing unit or remotely on a server.

Description of Figure 4 - User Actions

Fig. 4 is a flow chart showing a sequence of instructions relating to the filling of a sheet according to the present method viewed from the side of the user.

Step 1: Identifying the identifier

With the help of the digital pen, the user checks each cell of the identifier or draws a continuous line on the latter. The outline of the identifier will preferably be visible graphically by the user. Graphical indicators (simple geometrical shapes such as squares, circles or others) can also be used to indicate where the line should start and where it should start. end.

Step 2: Writing phase

The user writes, using the digital pen, handwritten data in the content area belonging to the same sheet as the identifier marked or drawn. Depending on the application, the content area will be blank or structured by fields to be filled, such as: quality control forms, maintenance reports forms, etc.

After this step, the user can restart this process, that is to say on other sheets, as many times as necessary. Step 3: Storage of the pen and data transmission

The user puts back the digital pen in its storage medium (USB ink type), which triggers a cascade of orders resulting in sending data stored in the memory of the digital pen to the computer processing unit . In the case of the use of a digital pen having the capacity to transmit data by a wireless communication protocol of bluetooth type or other, one will check on the sheet of paper a dedicated box halftone, whose outline will be preferably graphically visible by the user, which will trigger the sending of the data stored in the memory of the digital pen to the computer processing unit. This sequence of instructions will be respected by the user in the case of normal use. However, it is possible that the latter makes handling errors such as for example:

- The case where this one ticks / traces the cells of the identifier in the disorder and / or upside down before starting to write in the zone of contents. - The case where the user checks / tracing only part of the identifier cells before starting to write in the content area.

- The case where the user forgets to check / trace the cells of the identifier before starting to write in the content area.

In this context, in order to mitigate these potential errors, will be described in the following part of the automatic or semi automatic data processing processes that the computer processing unit has received from the digital pen.

Description of Figure 5 - Internal Data Processing

The chain of internal operations will now be described with reference to FIG. 5 constituting the second part of the method according to the invention. Step 1: Data transmission When the digital pen receives the order to send its data to the computer processing unit (when handing the digital pen in the storage medium, for example a USB inkwell, or when a special box is ticked for order the pen to send its data by protocol

5 wireless communication type Bluetooth or other), it transmits:

- its unique identifier number (that of the digital pen used),

the number of pages of different addresses (P (ai) or p (bj) as part of this process) traveled by the digital pen during the current operation.

During this same time, for each page on which the digital pen has written, it transmits:

- the address of the page (P (ai) or p (bj) as part of this process).

- the virtual surface of the page giving the coordinates (x min, y min) and (x max, y max).

- the number of plots on the relevant page ((a plot = everything the pen5 writes between the moment when the user presses the tip on the paper and the moment when he raises the tip of the paper) or (a trace = everything the pen writes between the moment when the user presses the writing tip on the paper and the moment the digital pen goes to a different address frame)).

Simultaneously, for each plot made by the digital pen, it O transmits:

- the color of the line (parameter defined in the memory of the digital pen).

- the line thickness (parameter defined in the digital pen's memory).

- the start date of each track relative to the internal clock of the digital pen.

- The duration of each trace (in milliseconds for example) 5 - the coordinates of all the points captured by the digital pen during the drawing (when writing, the pen captures its position coordinates Technically, it can capture up to at 50 points / second).

and at each captured point characterized by its coordinates (x, y) is associated a variable quantifying the pressure (function of the force applied by the user to the digital pen O and consequently the force applied by the tip of the pen. writing of the latter on the writing surface) on the one hand, and the time differential between the captured point and the previous point on the other hand. Step 2: first filtering of the data.

An automaton A (FIG. 6) is used which traverses the data, described in step 1, chronologically. The purpose of this PLC A is to detect the passage of the digital pen from one sheet to another between two discharges of data from the latter to the computer processing unit. It is a deterministic finite automaton defined by the quintuple A = (E ₁ Σ, f, d, Q) where:

- E = {EO, E1, E2} is the set of states of the automaton.

- Σ = {P (a1), ..., P (an), p (b1), ..., p (bm)} is the set of addresses recognized by the automaton. The P (ai) for i ranging from 1 to n being the addresses of the master pages. The p (bj) for j ranging from 1 to m being the addresses of the slave pages.

- f: E x Σ -> E being the transition function of the PLC.

- d = EO is the initial state of the automaton.

- Q = {E2} is the set of terminal states of the automaton. Namely the state in which the automaton is located when it has found a transition from one sheet to another.

We then have the transition function of the automaton defined as follows:

- f (EO, p (bk)) = E1 when the PLC has recognized an address p (bk) associated with a slave page. - f (E1, P (ai)) = E1 for all i going from 1 to n when the automaton has recognized any address P (ai) associated with the master pages.

- f (E1, P (bl)) = E2 when the PLC has recognized an address p (bl) associated with a slave page different from p (bk).

The automaton A traverses the data collected in step 1 in time [from t (startjraces) = (date of the first trace after the previous unloading of data from the digital pen) to t (end_traces) = (date of the last drawing before transmission of data contained in the memory of the digital pen to the computer processing unit)].

When the controller arrives in the E2 state, it has detected that the digital pen has moved from one sheet to another. This transition is not at this time totally determined. In fact, it is not known whether the plots corresponding to the transitions of the automaton A from the state E1 back to the state E1 (loop in FIG. 6) belong to the sheet containing the address halftone content zone. p (bk) or to the sheet containing the framed content area of address p (bl). Groupings are then carried out in such a way that the plots corresponding to these indeterminate transitions of the automaton belong to both the group of plots for which it is certain that they belong to the sheet containing the raster content area of address p ( bk) and to the group of plots for which we are sure to belong to the sheet containing the framed content area of address p (bl). The automaton having traversed all the plots in the time will thus obtain between 1 and n groups of plots depending, in particular, on the number of sheets indicated by the user. We will then filter the tracks thus grouped again in the next step.

Step 3: Second Data Filtering

Then comes a second phase of filtering the group-by-group plots.

In the context of this second filtering, we imagine a virtual grid G divided into surface units S (k) (FIG. 7) defined according to the following pair of coordinates [x (S (k)) start, y (S (k)) beginning; x (S (k)) end, y (S (k)) fin] such that:

- k between 1 and ni or k between 1 and m1 with ni = m1. - x (S (k)) start = X (C (I)) start = x (c (J)) start.

- y (S (k)) start = y (C (1)) start = y (c (J)) start.

- x (S (k)) end = X (C (I)) end = x (c (J)) fin.

- y (S (k)) end = y (C (1)) fin = y (c (J)) fin.

by convention k = I = J. The traces T belonging to the group being filtered are stacked chronologically and virtually on each surface unit S (k) in such a way that:

- All the traces T of the group belonging to the cells C (I = I) are found in the unit of surface S (k = 1), the traces of the cell C (l = 2) in the unit of surface S ( k = 2) and so on up to 1 = 400 and k = 400 in the context of the example described in the paragraph "description of FIG. 2".

- All the tracts T of the group belonging to the cells c (J = 1) are found in the unit of surface S (k = 1), the plots of the cell c (J = 2) in the unit of surface S ( k = 2) and so on up to J = 400 and k = 400 in the context of the example described in the paragraph "description of FIG. 2".

Thus, if for example the user has made 3 plots T at dates t0, t1, t2 (where t0 <t1 <t2) on the same cell C (I = I) of address P (a1). We have G (S (k = 1)) = [T (t0,

P (a1), C (I)); T (M ₁ P (a ₁ ), C (I)); T (t2, P (a1), C (1))]. In other words, if one writes on corresponding cells, that is to say with the same coordinates, and located on 1 or 2 different leaves, the 3 plots will appear superimposed and chronologically classified on the virtual grid G.

Step 4: Treatment phase

The processing passes for each group of plots T, by searching for the presence of an identifier, through the virtual grid G. To do this, an automaton B (FIG. 8) is applied by the processing unit to each group of T traces The recognition of an identifier will depend on the reading path of the traces T stored in S (k) on the grid G. To recognize horizontal identifiers, it is possible for example to read the traces T, stored in the grid, by traversing the units surface S (k) from left to right on the same line. For vertical identifiers, we will go through the surface units S (k) from top to bottom on the same column. It will also be possible to use more complex route diagrams by adding the temporal data, by traversing only the continuous traces etc.

The automaton B making it possible to recognize an identifier is a deterministic finite automaton defined by the quintuplet B = (E, Σ, f, d, Q) where: - E = {E0, E1, E2, E3} is the set of states of the automaton.

- Σ = {P (a1) P (an), p (b1), ..., p (bm)} is the set of addresses recognized by the automaton. P (a1) and P (a2) being the addresses of the master pages indicating the beginning and the end of an identifier. The P (a1) ≠ P (a1) ≠ P (a2) for i ranging from 3 to n being the addresses of the master pages composing the identifier. The p (bj) for j ranging from 1 to m being the addresses of the slave pages.

- f: E x Σ -> E being the transition function of the PLC.

- d = EO is the initial state of the automaton.

- Q = {E3} is the set of terminal states of the PLC. Namely the state in which the automaton is located when it recognized an identifier. We then have the transition function of the automaton defined as follows:

- f (E0, P (a1)) = E1

- f (E1, P (ai)) = E1 for all i ranging from 3 to n.

- f (E1, p (bj)) = E2 - f (E2, P (ai)) = E2 for all i ranging from 3 to n.

- f (E2, P (a2)) = E3

When the automaton arrives in the state E3, it saves the identifier thus recognized and the address of the associated slave page, then continues reading the traces T stored in the grid G according to the chosen path. If no identifier is recognized by the PLC, an appropriate message may be displayed by the computer processing unit to the user, for example to ask him to switch the digital pen on the identifier of the sheet concerned, so that the traces belonging to the address content area p (bj) can be associated with a valid identifier. For each recognized identifier, the computer processing unit will verify, by consulting the database, that the latter exist with the frames address slaves p (bj) associated. If this is not the case, the computer processing unit will check if there may be ambiguity in the recognition of the identifier. For example, the computer processing unit will check the dates associated with the traces T. If necessary, the computer control unit will display a message to the user informing him of an incorrect, invalid or insufficient input and will ask him to redo the procedure for validating the identifier.

Claims

1. Method for constructing and composing on at least one sheet of at least one identifier from at least one sample of at least one cell in at least one page from a general frame, method for creating a rasterized or partially rasterized content area on which the hand of a user writes or bears graphic signs, this content area being obtained by at least one sample of at least one cell in at least one page resulting from a frame general, the reading of the identifier being carried out by means of a digital writing and reading instrument associated with at least one sheet characterized in that:

. we define n "master" pages P with address "P(ai)" (1<i<n) each divided into ni cells C(I) (1<l<n1) to form at least one identifier part per sampling of at least one cell and grouping,

. we define a special master page with address “P(a1)” dedicated to the start of each identifier from which we take a cell “D” at the start of each constructed identifier,

. we define a special master page with address “P(a2)” dedicated to the end of each identifier from which we take a cell “F” at the end of each constructed identifier, . we define m "slave" pages "p" with address "p(bj)" (1<j<m) each divided into m1 cells "c(J)" 1<J<m1 to form each zone by sampling and grouping content of each writing surface,

. we insert between the first cell "D" and the last cell "F" of each identifier, for a given sheet, a cell c(J) taken from a slave page "p" whose address is identical to that of the cells c (J) used to constitute the content area belonging to this same sheet,

. we choose for the other cells C(I) of the same identifier, which are neither the cell "D" nor the cell "F" nor the cell c(J), one or more address(es) "P(ai )" randomly or according to an algorithm, . we choose for the cell c(J) of the same identifier of a given sheet and for all the cells c(J) which make up the content area of this same sheet, an address "p(bj)" randomly or according to an algorithm,

. the identifier is acquired by passing the digital writing and reading instrument over all the cells of the identifier,. the content area is used by writing in this area on the screened paper with the digital writing and reading instrument,

. the writing result is sent in the form of a series of data to a computer processing unit,

. we filter and process the data corresponding to this result before its final use.

5 2. Method according to claim 1 characterized in that an identifier is composed by the juxtaposition of several raster cells each taken from a master page P of distinct address and by a start cell D and an end cell F taken each in a separate special master page.

3. Method according to the preceding claim characterized in that 0 we compose an identifier by the juxtaposition of at least five raster cells taken for two of them from a master page P of distinct address and by a special cell taken in a special slave page supplemented by a starting cell D and an ending cell F each taken for the latter from a special master page. 5

4. Method according to claim 1 characterized in that an identifier start mark and an identifier end mark are created.

5. Method according to the preceding claim characterized in that the start and end marks of the identifier are cells, respectively "D" and "F" taken from the master pages P in which a cell c(J) taken is inserted O in a slave page "p".

6. Method according to claim 1 characterized in that the digital writing and reading instrument sends the data to the computer processing unit via a USB inkwell.

7. Method according to claim 1 characterized in that the digital writing and reading instrument sends the data to the computer processing unit by a wireless communication protocol.

8. Method according to the preceding claim characterized in that the communication protocol is that known under the name Bluetooth.

9. Method according to claim 1 characterized in that O the organization chart is essentially composed of the following main steps: the user marks the identifier with the digital pen, the user registers using the digital pen data of writing and graphics in the content area or fills in the fields of a form established or printed in the content area, 5. the user repeats the two previous steps as many times as necessary on as many sheets as necessary, the user replaces the digital pen in its storage support, data stored in the memory of the pen is transmitted to the computer processing unit, a first filtering of the data is carried out by a automaton A,

5. We carry out a second filtering by grouping and organizing the data in a virtual grid G, we process the data thus grouped and organized by an automaton B.

10. Method according to claim 1 characterized in that it further comprises the details of the steps of 0. transmission by the digital pen which transmits each time its unique identification number, the number of pages of different addresses covered by the digital pen during the current operation, for each page covered its respective address, its virtual surface and the 5 number of traces, for each trace, the color and thickness of the line, the date and time of the start of the trace, the coordinates (x, y) of all the captured points belonging to the same trace, for each point captured, a variable reflecting the pressure force of the pen 0 on the sheet and the duration between two successive points,

. first filtering: assignment of each plot to the corresponding sheet and grouping,

. second filtering: we order the traces group by group and we stack them chronologically on each surface unit of the grid G, 5. processing: each group of traces T is processed by searching for the presence of an identifier that we recognize, if there is no recognition of the identifier, the user is asked to validate it again.

11. Method according to claim 1 characterized in that the filtering of the data is carried out by a automaton A which goes through the data received from the digital pen O to detect the passage of the digital pen from one sheet to another knowing the whole addresses of master and slave pages, it groups the data and stacks them chronologically in order to detect possible user errors.

12. Method according to claim 1 characterized in that the data processing is carried out by the automaton B which makes it possible to recognize an identifier, to save it with the address of the associated slave page and to ask the user to revalidate the identifier if it is not recognized.

13. System for implementing the method according to any one of the preceding claims, characterized in that it consists of the following means: a digital writing and reading instrument,. a writing tablet receiving at least one sheet of screened paper, a screened sheet comprising a screened content area, formed by taking and grouping at least one cell c(J) taken from a slave page "p" of address p(bj), an area of the identifier consisting of a juxtaposition of cells taken from the master pages "P" and from the slave pages "p" and possibly including a framed box to be validated for sending the data to the computer processing unit and geometric graphic indicators of start and end of zone, an automaton A, an automaton B, a computer processing unit,. a database which combines:

- a different “ai” number for each “master” page with address P(ai) used to implement this process.

- a different “bj” number for each “slave” page with address p(bj) used to implement this process. - a different “I” number for each cell C(I) taken from the “master” pages with address P(ai) to implement this process.

- a different “J” number for each cell c(J) taken from the “slave” pages with address p(bj) to implement this process.

- a “bj” number for each identifier composed of a series of “ai” numbers different from ai and a2 (for example 25.213.25.67 in the case of an identifier composed of 7 raster cells).

- the traces made by the user with the digital pen on the frame of the content area specific to each identifier, then recorded in the database.

14. System according to claim 13 characterized in that the content area is structured by fields to be filled in: forms, reports.

15. System according to claim 13 characterized in that the digital writing and reading instrument is a digital pen which consists of: a pen body, a writing tip on ordinary paper and a means of vision of the reading micro-camera type,. a digital system for interpreting the frame and recording the position of the writing tip during writing according to x and y coordinates, a storage medium triggering the sending of data corresponding to its use, a data transmission assembly between it and the computer processing unit, 5. of a wireless communication protocol.

16. System according to claim 13 characterized in that the computer processing unit is a microcomputer or a mobile telephone.

17. System according to claim 13 characterized in that the automaton A is a deterministic finite automaton applied by the computer processing unit 0 which carries out filtering by browsing the data to detect the passage of the digital pen from a sheet to the the other between two data downloads to the computer unit and which is defined by the quintuple A = (E, Σ, f, d, Q) where:

- E = {EO, E1, E2} is the set of states of the automaton.

- Σ = {P(a1), ..., P(an), p(b1) p(bm)} is the set of addresses recognized by the automaton. The P(ai) for i ranging from 1 to n being the addresses of the master pages. The p(bj) for j ranging from 1 to m being the addresses of the slave pages.

- f: E x Σ -> E being the transition function of the automaton.

- d = EO is the initial state of the automaton.

- Q = {E2} is the set of terminal states of the automaton. Namely the state in which the automaton finds itself when it has found a transition from one sheet to another, determining the transition function of the automaton defined as follows:

- f(EO,p(bk)) = E1 when the automaton has recognized an address p(bk) associated with a slave page.

• f(E1,P(ai)) = E1 for all i going from 1 to n when the automaton has recognized any 5 address P(ai) associated with the master pages, by which the automaton A browses the data collected in step 1 over time [from t(beginning) = (date of the first trace after the previous download of data from the digital pen) to t(end) = (date of the last trace before transmission of the data contained in the memory from the digital pen to the computer processing unit).

18. System according to claim 13 characterized in that the automaton B is a deterministic finite automaton applied by the computer processing unit on each group of traces for the recognition of an identifier and which is defined by the quintuple B = ( E, Σ, f, d, Q) where: 5 - E = {EO, E1, E2, E3} is the set of states of the automaton.

- Σ = {P(a1), .... P(an), p(b1), ..., p(bm)} is the set of addresses recognized by the automaton. P(a1) and P(a2) being the addresses of the master pages indicating the start and end of an identifier. The P(ai) ≠ P(a1) ≠ P(a2) for i ranging from 3 to n being the addresses of the master pages composing the identifier. The p(bj) for j ranging from 1 to m being the addresses of the slave pages. - f: E x Σ -> E being the transition function of the automaton.

- d = EO is the initial state of the automaton.

- Q = {E3} is the set of terminal states of the automaton. Namely the state in which the automaton is when it has recognized an identifier,

Determining the transition function of the automaton as follows: - f(E0,P(a1)) = E1

- f(E1,P(ai)) = E1 for all i going from 3 to n.

- f(E1,p(bj)) = E2

- f(E2,P(ai)) = E2 for all i going from 3 to n.

- f(E2,P(a2)) = E3 19. System according to claim 13 characterized in that the database contains the addresses P(ai) of each master page, the addresses p(bj) of each slave page, the number (I) of each cell C(I) taken from the master pages, the number J of each cell c(J) taken from the slave pages, the numbers (bj) specific to each identifier, the plots specific to each zone of content made by the user with the digital pen.