There will now be described, by way of example only, several embodiments of the present invention with reference to the accompanying drawings of which:
Referring to
It is envisaged that the position-identifying pattern that is printed may have many forms but one suitable example is that shown in
Referring to
When the user has finished marking the document, in this case when the questionnaire is completed, this is recorded in a document completion process, for example by making a mark with the pen in the send box 122. The pen is arranged to recognise the pattern in the send box 122 and determine from that pattern the identity of the document 100.
Referring to
The system also includes an internet connected enhanced paper look up (EPLS) server 304 which has stored on it a set of electronic records which each correspond to a different printed digital document 100. Each of the electronic records in this example comprises an image file which comprises an image of the document as printed, such as a bitmap. The records also include information about the pattern printed with each digital document.
Importantly, this pattern information is stored in a searchable form. An application service handler (ASH) 306, which is a program run, in this case, on a separate server having its own memory, processor I/O devices and communications port, is also provided with Internet connection. The ASH 306 is arranged to interpret the pen strokes recorded by the pen 300, as described below, converting them to an input suitable for the application on the PC 302. The ASH includes an intelligent character recognition (ICR) program so that it can interpret handwritten input on the document 100 and convert it to digital text. A further ASH 307 is also provided, and is associated with a different application and arranged to interpret pen strokes for that application. Basically there is one ASH for each application that makes use of the digital pen and paper system.
Each ASH 306, 307 needs to have a record of the layout of any particular document 100 including the positions, dimensions and functions of each of the patterned areas so that it can process any pen strokes made on the document 100. This record can be retrieved by the ASH from the EPLS 304 when needed.
Referring again to
The LPLS is arranged to pass the pen information as a document request to a pattern allocation unit which forms part of the EPLS 304. One function of this unit is to receive these document requests. The requests include pattern information read from a digital document. The pattern allocation unit then searches the stored pattern information stored on the EPLS to identify the stored electronic record which corresponds to pattern information in the document request. The EPLS identifies the appropriate ASH 306 for use in processing the identified document and sends the digital document identity to the pen as well as the electronic record of the printed document. The pen can then send the pen stroke data and the document identity to the correct ASH 306, 307. The bitmap can be rendered on a screen or printed.
It will be understood that the various components of the system can all be located at separate locations, communicating via the internet as described. Alternatively some or all of them could be provided together on a single server, or grouped on a local network. This might be appropriate where a self-contained system for a limited number of applications is required. In this example, the pattern allocation unit and the store of published document data including electronic records are provided by a single EPLS server.
In order to produce a set of digital documents 100 and an electronic record for storing in the server of the apparatus of
The user may split the pattern between different pattern areas as needed (step 606) and optionally define functions associated with the various patterned areas defined at step 608 so that the application 402 can process data received back when the document 100 has been written on. In the case of the questionnaire document 100 the pattern areas in the larger boxes 120, 121 are identified as a graphical input areas, for which any pen markings should be stored graphically, or perhaps analysed using character recognition and stored as text. The pattern associated with the check boxes 118 is associated with the respective response options so that the checking of the boxes 118 on a number of the forms 100 produces a standard mark, such as a cross, in the check box of the stored document. The pattern associated with the send box 122 is associated with the send function which will cause the pen to stop recording pen strokes for the document 100 and send them to the ASH 306. The document is then named at step 610.
Once the document 100 has been named, the user indicates, using the FDT 416 that it is completed, and the FDT 416 produces and saves a copy of the document which is an electronic record of the content of that document as it will appear when printed. The electronic record may at this stage be an exact copy of the document as it will be printed and can be saved in any one of a number of preferred formats but in this example it is saved as a bitmap image. Otherwise, it could contain the content only without the formatting. It will also be understood that the pattern could be stored separate to the electronic record in some related way. As long as the pattern can be searched and is linked to its corresponding electronic record the record will still be linked to its corresponding printed digital document.
As well as the electronic record, the FDT may optionally also create a Paper Application Definition (PAD) file which is a file defining those features or parameters of the document 100 that will be needed by the ASH 306 to interpret pen strokes made on the document 100. Those parameters may include the size and shape of the pattern areas, their relative positions in pattern space as indicated by a unique pattern ID or perhaps a seed for producing the portion of pattern, and their functions, such as whether they are check boxes, areas for graphical input, areas for ICR analysis or areas having other functions. These parameters are the ones necessary to allow the processing of pen strokes made on the document 100 using the pen 300. It will, of course, be understood that the electronic record may form part of the PAD file.
The electronic record—and optionally the PAD file—is then transmitted at step 610 to the EPLS 304 when the document 100 has been finished and printed and before it is written on with the pen, so that the ASH can interpret pen strokes on the document 100 and produce the necessary inputs to the application 402. The electronic record enables the digital document to be reproduced either on a display screen or as hardcopy as it is printed.
When combined with pen stroke information by an appropriate application service handler this can enable a user to view a copy of a printed document together with the pen markings and if desired produce a copy of the originally printed document with the markings.
From the preceding description it can be seen that the EPLS server receives document requests which comprise pattern information, finds the electronic record which includes pattern which matches this request and transmits this to the PC making the request or perhaps to another device which is running an appropriate ASH. The PC, or the ASH, then generates the copy from the electronic record and combines it with any pen markings recorded by the pen. This can then be displayed on a monitor associated with the PC.
A method and apparatus for the creation of the electronic copies and printing of digital documents will now be described. The printing of the digital document—comprising the content and the pattern may be achieved in a single pass process using any printer that has a sufficient resolution to produce the dots of the pattern.
When a user decides to print a document, the printer driver or print on demand (POD) tool is called up from the application. In a typical graphical user interface, such as Microsoft Windows, running a word processing package to design a form, such as Word 6.0, calling the printer driver is performed by selecting “file” then click “print” in the drop down box that appears below. This will cause the printer driver to display a set of visual prompts on the screen to which the user can respond. These prompts may include the option to print the document with or without pattern.
Once the user has responded to the prompts called by the POD tool, a form of printer driver, it takes the file—a PDF file in this example—produced by the application and produces a print file in a page description language (PDL) describing the arrangement of any text and graphics forming the content in the document. Many different PDL languages could be used such as PCL developed by Hewlett Packard or Postscript developed by Adobe Systems. If one has not already been created before printing the printer driver may also produce a suitable electronic record, which in this example is a bitmap. It could of course be provided in some other format such as PDF. This is sent to the EPLS server. If the content has changed since the document was designed, there will be a difference between any copy reproduced from the electronic record and the actual printed document. To overcome this, a new electronic record 708 may be produced at this stage and stored on the EPLS 304. This may be stored as a replacement for any existing description held on the EPLS, perhaps as part of the PAD file. In this manner, the copy of the printed file retrieved from the EPLS is as near as possible to the printed document—including requested changes such as scaling or colour selection. If the copy is viewed on screen or printed it will be much closer to the actual printed document.
In an alternative or additional to the storage of an electronic record which is an exact copy of the printed document, the electronic record may comprise one or more identifiers which identify information relevant to the production of the document. For example, in the case of a form which is made by merging data from a database into fields of a template the electronic record may also indicate the identity and/or location of a template and also the identity and/or location of data added to the template to create the document. It may also include information about any printer settings used in printing, for example that would change the scale or format of the document, or perhaps alter the colours used when printing.
In this alternative, or in addition, the electronic record may contain enough information to not only allow the document to be reproduced but also encodes other information which is needed to reproduce the document yet can not be determined merely from looking at the printed document, such as the use of a certain template or location of a database which holds the added data. This is shown by way of example in
It will be understood that the electronic record may be held in many forms and in a number of different possible locations. If the printing and writing on the documents is performed within a closed system such as an internal company workflow the record could be saved on a local disk. If the paper is to form part of an open system and could be used by any one, anywhere in the world, the record should be saved in a place where it can be accessed globally across a network. This could be on a server which provides a local paper look up service, or together with an ASH which is known to an EPLS server.
Number | Date | Country | Kind |
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0321167.9 | Sep 2003 | GB | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP04/52085 | 9/8/2004 | WO | 00 | 8/9/2007 |