CA2400732C - Method and system for digitizing freehand graphics with user-selected properties - Google Patents
Method and system for digitizing freehand graphics with user-selected properties Download PDFInfo
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- CA2400732C CA2400732C CA2400732A CA2400732A CA2400732C CA 2400732 C CA2400732 C CA 2400732C CA 2400732 A CA2400732 A CA 2400732A CA 2400732 A CA2400732 A CA 2400732A CA 2400732 C CA2400732 C CA 2400732C
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0317—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
- G06F3/0321—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- User Interface Of Digital Computer (AREA)
- Processing Or Creating Images (AREA)
- Position Input By Displaying (AREA)
- Image Input (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
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Abstract
This invention relates to an arrangement for inputting graphical information into a computer system, where the graphical information arises when a drawing device is moved relative to a base. The base is provided with a position-coding pattern and the drawing device is arranged to detect positions on the base by means of the position-coding pattern. The computer system is arranged to record position information from the drawing device indicating positions within a first area on the base as graphical inputs and position information indicating positions within a second area on the base as information concerning a visual property associated with the graphical input.
Description
Method and System for Digitizing Freehand Graphics with User-Selected Properties Field of the Invention The present invention concerns an arrangement for inputting graphical information into a computer system, and a base suitable for incorporation in such an arrangement. In addition it concerns a drawing device and a storage medium for digital information.
Technical Background Systems for inputting graphical information into computer systems are used to a great extent together with various types of graphics programs, CAD programs, web design programs, etc. In such a context the input system makes possible the input of hand-drawn figures into the program.
Input systems of this type often consist of a base and a drawing device. When the drawing device is moved over the base its movement is recorded in the system electronically as a graphical input, which can be trans-mitted to a computer system in digital form. An example of such an input system is described in US, 4,717,793, A.
In this a base is arranged to detect inductively the po-sition of a drawing device on the base. By repeated re-cording of this information, the movement of the drawing device across the base results in a graphical input.
Known input systems are often expensive. In addition they are usually unwieldy, particularly if the base is re-quired to have a large input surface and if it is to be possible to input visual properties of graphic inputs.
This makes the use of such input systems more difficult, particularly in mobile applications.
Summary of the Invention This invention aims to solve the above-mentioned problems either completely or partly.
Technical Background Systems for inputting graphical information into computer systems are used to a great extent together with various types of graphics programs, CAD programs, web design programs, etc. In such a context the input system makes possible the input of hand-drawn figures into the program.
Input systems of this type often consist of a base and a drawing device. When the drawing device is moved over the base its movement is recorded in the system electronically as a graphical input, which can be trans-mitted to a computer system in digital form. An example of such an input system is described in US, 4,717,793, A.
In this a base is arranged to detect inductively the po-sition of a drawing device on the base. By repeated re-cording of this information, the movement of the drawing device across the base results in a graphical input.
Known input systems are often expensive. In addition they are usually unwieldy, particularly if the base is re-quired to have a large input surface and if it is to be possible to input visual properties of graphic inputs.
This makes the use of such input systems more difficult, particularly in mobile applications.
Summary of the Invention This invention aims to solve the above-mentioned problems either completely or partly.
This aim is achieved by an arrangement for input-ting graphical information into a computer system, device having a base suitable for use in such an arrangement, a drawing device, a storage medium for digital information and a device.
According to a first aspect of the invention an ar-rangement is provided for inputting graphical information into a computer system, the graphical information arising when a drawing device is moved relative to a base. The arrangement is characterised in that the base is provided with a position-coding pattern and in that the drawing device is arranged to detect positions on the base by means of the position-coding pattern. In addition the computer system is arranged to record position informa-tion from the drawing device indicating positions within a first area on the base as graphical inputs. Position information from the drawing device indicating positions within a second area on the base is recorded as infor-mation concerning a visual property associated with a graphical input.
Such a position-coding pattern can be designed in the way described in the Applicant's International patent application WO 00/73983 published 2000-12-07. Moreover, reference is made to International patent application WO 01/16691, published 2001-03-08 the content of which is included in the present specification by reference. Such a drawing device has a number of applications in addition to the input of graphical information into graphics programs, etc. A user who has such a drawing device for other applications can therefore realise an arrangement in accordance with the invention just by the use of a suitable position-coded base, for example a sheet of paper, and suitable software, for example in a personal computer. Both the software and the base are relatively cheap to produce, for which reason an arrangement in accordance with the invention can be achieved at low cost. The arrangement also permits the carrying out of graphical inputs with various visual properties, which can be selected.
In addition an arrangement in accordance with the invention is suitable for mobile applications, even if the base is made large. If the base is constructed as a sheet of paper it can simply be folded up.
In accordance with a preferred embodiment the com-puter system is integrated in the drawing device. This makes possible even greater mobility. A graphical image can thus be produced in the drawing device and, for exam-ple, later transmitted via a mobile telephone system to a server, without having a personal computer on site.
Alternatively, the computer system may be integrated in a cellular telephone.
Preferably, the computer system may be devised to display an indication of the latest selected visual property. This allows for acknowledging the user as regards the selected visual property.
According to a second aspect of the invention a base is provided for the input of graphical information into a computer system, the graphical information arising when a drawing device is moved relative to the base. The base is provided with a position-coding pattern, which makes it possible to detect positions on the base using the draw-ing device, which is arranged to transmit position infor-mation to the computer system. The base has a first and a second area. Positions within the first area are intended to be detected by the computer system as graphi-cal inputs and positions within the second area as in-formation concerning a visual property associated with a graphical input. A sub-area within the second area, where positions within the sub-area are intended to be detected by the base as information concerning a visual property, is provided with a visible, visual indicator representing this information. This makes the use of an arrangement such as that described above, considerably easier.
According to a first aspect of the invention an ar-rangement is provided for inputting graphical information into a computer system, the graphical information arising when a drawing device is moved relative to a base. The arrangement is characterised in that the base is provided with a position-coding pattern and in that the drawing device is arranged to detect positions on the base by means of the position-coding pattern. In addition the computer system is arranged to record position informa-tion from the drawing device indicating positions within a first area on the base as graphical inputs. Position information from the drawing device indicating positions within a second area on the base is recorded as infor-mation concerning a visual property associated with a graphical input.
Such a position-coding pattern can be designed in the way described in the Applicant's International patent application WO 00/73983 published 2000-12-07. Moreover, reference is made to International patent application WO 01/16691, published 2001-03-08 the content of which is included in the present specification by reference. Such a drawing device has a number of applications in addition to the input of graphical information into graphics programs, etc. A user who has such a drawing device for other applications can therefore realise an arrangement in accordance with the invention just by the use of a suitable position-coded base, for example a sheet of paper, and suitable software, for example in a personal computer. Both the software and the base are relatively cheap to produce, for which reason an arrangement in accordance with the invention can be achieved at low cost. The arrangement also permits the carrying out of graphical inputs with various visual properties, which can be selected.
In addition an arrangement in accordance with the invention is suitable for mobile applications, even if the base is made large. If the base is constructed as a sheet of paper it can simply be folded up.
In accordance with a preferred embodiment the com-puter system is integrated in the drawing device. This makes possible even greater mobility. A graphical image can thus be produced in the drawing device and, for exam-ple, later transmitted via a mobile telephone system to a server, without having a personal computer on site.
Alternatively, the computer system may be integrated in a cellular telephone.
Preferably, the computer system may be devised to display an indication of the latest selected visual property. This allows for acknowledging the user as regards the selected visual property.
According to a second aspect of the invention a base is provided for the input of graphical information into a computer system, the graphical information arising when a drawing device is moved relative to the base. The base is provided with a position-coding pattern, which makes it possible to detect positions on the base using the draw-ing device, which is arranged to transmit position infor-mation to the computer system. The base has a first and a second area. Positions within the first area are intended to be detected by the computer system as graphi-cal inputs and positions within the second area as in-formation concerning a visual property associated with a graphical input. A sub-area within the second area, where positions within the sub-area are intended to be detected by the base as information concerning a visual property, is provided with a visible, visual indicator representing this information. This makes the use of an arrangement such as that described above, considerably easier.
The first and the second area on the base are pre-ferably separated from each other in a visible way, which makes it easier for a user to work with an arrangement according to the invention.
The information concerning visual properties can preferably consist of colour information, which enables more expressive graphical inputs to be carried out, as several colours can be used.
According to another embodiment the information con-cerning visual properties can consist of line ---roe infor-mation, which enables more expressive graphical inputs to be carried out, as several types of line can be used, for example solid, dotted and broken.
According to a further embodiment the information concerning visual properties can consist of line width information, which enables more expressive graphical in-puts to be carried out, as several line widths can be used.
When the second area is used for colour in=ormation, a sub-area within the second area, where a position within the sub-area is intended to indicate a rarticular colour, can preferably be coloured with this cc--our. This results in a user interface, which is independent of language.
According to another embodiment a sub-area within the above-mentioned second area, where a position with-in the sub-area is intended to indicate a particular colour, can be provided with an alphanumeric indicator signifying this colour. This makes it possible for a user with limited colour vision to be able, in spite of this, to carry out graphical inputs with colour properties as required.
According to yet another embodiment the second area can comprise a set of visually separated sub-areas, each provided with at least one alphanumeric symbol. This makes possible the input of properties from a great number of visual properties even though only a small second area is provided. This is because a combination of sub-area indications can be made arbitrarily long.
According to a third aspect of the invention a draw-ing device is provided for inputting graphical informa-5 tion into a computer system, where the graphical informa-tion arises when the drawing device is moved relative to a base. The drawing device is arranged to detect posi-tions on the base by the utilisation of a position-coding pattern marked on the base. A computer system integrated in the drawing device is arranged to detect positions within a first area on the base as graphical inputs and positions within a second area on the base as information concerning visual properties associated with a graphical input. The advantages of such a drawing device are shown in the discussion above. The drawing device can also be varied in a number of ways corresponding to the base described above.
According to a fourth aspect of the invention a storage medium for digital information is provided, which can be read by a computer system, the storage medium con-taining a program for inputting graphical information into a computer system where the program defines the fol-lowing steps: recording of position information from a drawing device indicating positions within a -first area on a base as graphical inputs; and recording of position information from a drawing device indicating positions within a second area on the base as information con-cerning visual properties associated with a graphical in-put. Such a program makes possible the function of an ar-rangement of the type described above. The program can also be varied in a number of ways corresponding to the base described above.
Brief Description of the Drawings Fig. 1 shows an arrangement for inputting graphical information in accordance with the invention.
The information concerning visual properties can preferably consist of colour information, which enables more expressive graphical inputs to be carried out, as several colours can be used.
According to another embodiment the information con-cerning visual properties can consist of line ---roe infor-mation, which enables more expressive graphical inputs to be carried out, as several types of line can be used, for example solid, dotted and broken.
According to a further embodiment the information concerning visual properties can consist of line width information, which enables more expressive graphical in-puts to be carried out, as several line widths can be used.
When the second area is used for colour in=ormation, a sub-area within the second area, where a position within the sub-area is intended to indicate a rarticular colour, can preferably be coloured with this cc--our. This results in a user interface, which is independent of language.
According to another embodiment a sub-area within the above-mentioned second area, where a position with-in the sub-area is intended to indicate a particular colour, can be provided with an alphanumeric indicator signifying this colour. This makes it possible for a user with limited colour vision to be able, in spite of this, to carry out graphical inputs with colour properties as required.
According to yet another embodiment the second area can comprise a set of visually separated sub-areas, each provided with at least one alphanumeric symbol. This makes possible the input of properties from a great number of visual properties even though only a small second area is provided. This is because a combination of sub-area indications can be made arbitrarily long.
According to a third aspect of the invention a draw-ing device is provided for inputting graphical informa-5 tion into a computer system, where the graphical informa-tion arises when the drawing device is moved relative to a base. The drawing device is arranged to detect posi-tions on the base by the utilisation of a position-coding pattern marked on the base. A computer system integrated in the drawing device is arranged to detect positions within a first area on the base as graphical inputs and positions within a second area on the base as information concerning visual properties associated with a graphical input. The advantages of such a drawing device are shown in the discussion above. The drawing device can also be varied in a number of ways corresponding to the base described above.
According to a fourth aspect of the invention a storage medium for digital information is provided, which can be read by a computer system, the storage medium con-taining a program for inputting graphical information into a computer system where the program defines the fol-lowing steps: recording of position information from a drawing device indicating positions within a -first area on a base as graphical inputs; and recording of position information from a drawing device indicating positions within a second area on the base as information con-cerning visual properties associated with a graphical in-put. Such a program makes possible the function of an ar-rangement of the type described above. The program can also be varied in a number of ways corresponding to the base described above.
Brief Description of the Drawings Fig. 1 shows an arrangement for inputting graphical information in accordance with the invention.
Fig. 2 shows an alternative embodiment of a base in-tended to be used in such an arrangement.
Fig. 3 shows a further embodiment of such a base.
Fig. 4 shows diagrammatically the steps in a compu-ter program suitable for use in an arrangement in accor-dance with the invention.
Description of Preferred Embodiments Fig. 1 shows an arrangement for inputting graphi-cal information in accordance with the invention. The ar-rangement comprises a drawing device 1, which is moved over a base 3. In the embodiment shown a trace 5, prefer-ably of ink, is deposited on the base 3. This is not, however, necessary. The base can be made of an easily erasable material, which means that the base 3 can be used many times. A position-coding pattern 7 (shown en-larged) is printed on the base.
The position-coding pattern 7 is so designed that if part of the pattern with a certain minimum size is re-corded, then this part of the pattern's position in the pattern and thereby on the base can be determined unam-biguously.
The positioning coding pattern 7 can advantageous-ly be of such a type as shown in the Applicant's above-mentioned Applications WO 00/73983 and PCT/SE00/01667 where each position is coded by a number of symbols and where a symbol is used to code a number of positions. The position-coding pattern 7 shown is constructed as shown in WO 00/73983, where a large dot represents a "one" and a small dot represents a "zero". It is, however, also possible to design the position-coding pattern 7 as de-scribed in PCT/SEOO/01667, where different displacements of a dot in relation to a raster point code different symbol values.
The drawing device 1 is arranged to detect positions on the base 3 utilising the position-coding pattern 7.
When the drawing device 1 is moved relative to the base 3 and in contact with this, the drawing device records a series of positions on the base 3, which series is trans-mitted to a computer system 9, in this case a personal computer. The computer system may also be integrated in a cellular telephone. The transmission of the position information can be carried out by means of various types of cables or by means of an infrared link. However, a short-range radio link is preferably used, for example in accordance with the BLUETOOTH standard. The position information can be transmitted as a set of pairs of co-ordinates, but preferably the drawing device 1 first converts the series of pairs of co-ordinates into a polygon train which is then transmitted. It is recognised that the transmission can be carried out in several steps. For example, an input can be carried out with the drawing device and base and then the position information is transmitted to a personal computer. This information can then be transmitted over a network to a server, in which interpretation of the graphical inputs is carried out.
The drawing device 1 may be provided with means for allotting a detected position a time-stamp. This enables the order of graphical inputs to be preserved.The base 3 comprises a first area 11 corresponding to a first number of pairs of co-ordinates, and a second area 13, corresponding to a second number of pairs of co-ordinates. The first area 11 and the second area 13 on the base 3 are visually separated, in this case by means of a printed line 15.
The computer system 9 is arranged, using suitable software, to record position information from the drawing device, for example in the form of a polygon train, with-in the first area 11 as a graphical input. In the example shown, a trace 5 is deposited as mentioned when the drawing device 1 is moved over the base 3 in contact with this. As this movement takes place within the first area 11, the computer system 9 records the position in-formation which then arises and which is transmitted as a graphical input 17. The graphical input 17 is thus gra-phical digital information, which corresponds to a copy of the trace 5. This graphical input 17 can, for example, be reproduced on the screen 19 of the computer system 9.
When a position within the first area is recorded, a corresponding pixel in an image in an application is set accordingly to "one". A graphical input thus means that at least one image pixel, stored or displayed, changes state. A number of graphical inputs can make up an image which, for example, can be sent with an e-mail.
When the drawing device detects a position, this position is allotted a time-stamp, which corresponds to the time of detection. This timing information may be saved and used by the system in order to reproduce, not only a completed drawing, but also the manner in which the drawing was formed.
The computer system 9 is also arranged to record po-sition information from the drawing device 1 within the second area 13 as information concerning a visual pro-perty associated with a graphical input. For example, as already shown, after having created and recorded a gra-phical input 17, the user can point with the drawing de-vice 1 at a particular sub-area 21 in the second area 13 and thereby assign to the graphical input 17 a property (for example the colour blue) associated with this sub-area 21. This can also be done before the graphical input 17 is carried out, depending upon how the software in the computer system 9 is set. A sub-area 21 within the second area 13, where a position within the sub-area 21 is intended to indicate a particular visual property, is suitably provided with a visible, visual indicator 22 representing this property.
The computer system can also be integrated into the drawing device. In this way a complete graphic image can be produced in the drawing device and then, for example, transmitted by means of a mobile telephone system to a server or the like. The drawing device 1 can also be in-tegrated into, for example, a mobile telephone. It is also possible to let a computer system in the drawing de-vice identify which positions are to be interpreted as graphical inputs and which are to be interpreted as vis-ual properties. The information corresponding to graphi-cal inputs with particular properties can then be trans-mitted to another computer system, for example a personal computer.
Fig. 2 shows an alternative embodiment of a base 3' intended to be part of an arrangement according to the invention. Also here the base 3' comprises a first area 11' and a second area 13'. In this embodiment these are produced as physically separate units. As in the pre-viously shown embodiment, the first area 11' is used to create graphical inputs and to accept a corresponding trace 5'. The second area 13' is used to assign visual properties to the graphical inputs.
When a visual property is chosen, this property may preferably be fed back to the user in some way in order to acknowledge the choice of visual property. If, for instance, the drawing device communicates with a personal computer and the user chooses the visual property blue, the legend "blue" may be displayed on the monitor of the personal computer. If the drawing device communicates with a cellular telephone, a display on this telephone may be used in the same way. Alternatively, a display could be provided on the drawing device itself in order to achieve this functionality.
Fig. 3 shows a further embodiment of a base 3" ac-cording to the invention. The base may generally consist of a paper sheet, which is an inexpensive solution. It may also be made of a synthetic material such as polymer, which could allow ink-text and -figures on the surface to be easily erased. The base, as mentioned, is provided with a position-coding pattern. Also here the base 3"
comprises a first area 11" and a second area 13". As in the previously shown embodiment the first area 11" is used to create graphical inputs and to accept a corre-sponding trace 5". The second area 13" is used to assign visual properties to the graphical inputs. The second 5 area 13" has here a number of divisions 23, 25, 27, 29, 31, 33, each containing a number of sub-areas 21". Each sub-area 21" comprises a set of positions. When a computer system in the arrangement detects any of the positions within this set, this is recorded as infor-10 mation concerning a visual property corresponding to this sub-area 21". The position codes in the sub-area 21" do not normally occur within other sub-areas in the base 3".
The information concerning a visual property can be colour information. The base 3" has here a first division 23 and a third division 27 in the second area 13" which are used for recording colour information. The sub-areas within the first division 23 are printed with alphanume-ric indicators 22" signifying the colours represented by the sub-areas. In this case these consist of the names of the colours, but, for example, colour codes could also be used. The sub-areas in the third division 27 have been coloured with the colours (shown here by different shading) they represent, which provides a user interface, which is independent of language. The second division 25 is used in a similar way to represent line thickness in-formation and the fourth division 29 is used to represent line type information. In fig 3, there is shown 16 separate sub-areas, each having a numeral 0 to 9 and letters A to F attributed to each sub-area. When the drawing device points at one such area a numeral or letter corresponding to this sub-area may be inserted in the message. In this way, character recognition can be avoided. There may be further sub-areas, for example corresponding to all commonly used letters A to Z and a to z to enable insertion of normal characters. This may be used for specifying for instance an e-mail address, a fax number or a keyword. These sub-areas may thus be used to achieve non-graphical inputs as well as applying properties to graphical inputs. In this way virtually any type of simulated keyboard with for instance ASCII-characters may be achieved.
A fifth division 31 in the second sub-area 13"
comprises visually separated sub-areas, each provided with at least one alphanumeric character. By pointing at a sequence of these characters the user can input an arbitrarily long code, corresponding to a particular visual property. In this way a small surface can be pro-vided with means for reliable indication of a large num-ber of properties.
A sixth division 33 is used for specifying in which layer a graphical input is to be deposited in for example a drawing. Applying graphical inputs on different lavers may be useful in many applications. For instance, a machine drawing may be completed in a first layer and legends explaining features of the machine may be placed in a second layer. Then it is optional whether the explanations should be displayed or not. Different recipients may also be emailed with different sets of layers.
It is also possible to interrelate different sub-areas in the second area. Thus, for instance, a specific layer may be assigned specific properties, such as a specific line width and a specific line colour.
Graphical inputs may be assigned other types of visual properties. A graphical input may be assigned a "text"-property, which makes the system apply OCR
(Optical Character Recognition) functionalities on the input. A recorded legend may be given a visual property such as "bold" or "italic" by using a corresponding subarea.
The same concept applies to geometrical forms such as circles and rectangles. A coarse circle form inputted by the user may then, for instance, be perfected by the system, by applying a "circle" subarea. Alternatively,., the user may specify a centre and radius for a circle in the first area and mark a "circle" subarea in the second area. Similarly, logos and other figures may be drawn.
Other subarea-functions may be "erase" Ie_ete objects in an area:, "clear" (delete all objects) and "undo" (delete the latest inputted object).
Fig. 4 shows diagrammatically the steps in a compu-ter program suitable for incorporation in an arrangement according to the invention where a base has owc areas.
The program, which can be stored on any digital storage medium (for example a diskette), defines steps as fol-lows. After the identification 41 of a positicn, which is preferably carried out in the drawing device, it is determined 43 whether the position lies within the first area. If such is the case, there is a first recording 45 of the position information as a graphical inooo. This first recording comprises a number of subrouo:nes (not shown). Otherwise the position lies within the second area, so that a second recording 47 of the pcsicion in-formation takes place as information concerning visual properties of a graphical input. The second recording also comprises a number of sub-routines (not s=own).
The scope of the patent protection applied for is not restricted to the embodiments described above. The invention can be varied and changed in a number of ways within the scope of the following claims.
Fig. 3 shows a further embodiment of such a base.
Fig. 4 shows diagrammatically the steps in a compu-ter program suitable for use in an arrangement in accor-dance with the invention.
Description of Preferred Embodiments Fig. 1 shows an arrangement for inputting graphi-cal information in accordance with the invention. The ar-rangement comprises a drawing device 1, which is moved over a base 3. In the embodiment shown a trace 5, prefer-ably of ink, is deposited on the base 3. This is not, however, necessary. The base can be made of an easily erasable material, which means that the base 3 can be used many times. A position-coding pattern 7 (shown en-larged) is printed on the base.
The position-coding pattern 7 is so designed that if part of the pattern with a certain minimum size is re-corded, then this part of the pattern's position in the pattern and thereby on the base can be determined unam-biguously.
The positioning coding pattern 7 can advantageous-ly be of such a type as shown in the Applicant's above-mentioned Applications WO 00/73983 and PCT/SE00/01667 where each position is coded by a number of symbols and where a symbol is used to code a number of positions. The position-coding pattern 7 shown is constructed as shown in WO 00/73983, where a large dot represents a "one" and a small dot represents a "zero". It is, however, also possible to design the position-coding pattern 7 as de-scribed in PCT/SEOO/01667, where different displacements of a dot in relation to a raster point code different symbol values.
The drawing device 1 is arranged to detect positions on the base 3 utilising the position-coding pattern 7.
When the drawing device 1 is moved relative to the base 3 and in contact with this, the drawing device records a series of positions on the base 3, which series is trans-mitted to a computer system 9, in this case a personal computer. The computer system may also be integrated in a cellular telephone. The transmission of the position information can be carried out by means of various types of cables or by means of an infrared link. However, a short-range radio link is preferably used, for example in accordance with the BLUETOOTH standard. The position information can be transmitted as a set of pairs of co-ordinates, but preferably the drawing device 1 first converts the series of pairs of co-ordinates into a polygon train which is then transmitted. It is recognised that the transmission can be carried out in several steps. For example, an input can be carried out with the drawing device and base and then the position information is transmitted to a personal computer. This information can then be transmitted over a network to a server, in which interpretation of the graphical inputs is carried out.
The drawing device 1 may be provided with means for allotting a detected position a time-stamp. This enables the order of graphical inputs to be preserved.The base 3 comprises a first area 11 corresponding to a first number of pairs of co-ordinates, and a second area 13, corresponding to a second number of pairs of co-ordinates. The first area 11 and the second area 13 on the base 3 are visually separated, in this case by means of a printed line 15.
The computer system 9 is arranged, using suitable software, to record position information from the drawing device, for example in the form of a polygon train, with-in the first area 11 as a graphical input. In the example shown, a trace 5 is deposited as mentioned when the drawing device 1 is moved over the base 3 in contact with this. As this movement takes place within the first area 11, the computer system 9 records the position in-formation which then arises and which is transmitted as a graphical input 17. The graphical input 17 is thus gra-phical digital information, which corresponds to a copy of the trace 5. This graphical input 17 can, for example, be reproduced on the screen 19 of the computer system 9.
When a position within the first area is recorded, a corresponding pixel in an image in an application is set accordingly to "one". A graphical input thus means that at least one image pixel, stored or displayed, changes state. A number of graphical inputs can make up an image which, for example, can be sent with an e-mail.
When the drawing device detects a position, this position is allotted a time-stamp, which corresponds to the time of detection. This timing information may be saved and used by the system in order to reproduce, not only a completed drawing, but also the manner in which the drawing was formed.
The computer system 9 is also arranged to record po-sition information from the drawing device 1 within the second area 13 as information concerning a visual pro-perty associated with a graphical input. For example, as already shown, after having created and recorded a gra-phical input 17, the user can point with the drawing de-vice 1 at a particular sub-area 21 in the second area 13 and thereby assign to the graphical input 17 a property (for example the colour blue) associated with this sub-area 21. This can also be done before the graphical input 17 is carried out, depending upon how the software in the computer system 9 is set. A sub-area 21 within the second area 13, where a position within the sub-area 21 is intended to indicate a particular visual property, is suitably provided with a visible, visual indicator 22 representing this property.
The computer system can also be integrated into the drawing device. In this way a complete graphic image can be produced in the drawing device and then, for example, transmitted by means of a mobile telephone system to a server or the like. The drawing device 1 can also be in-tegrated into, for example, a mobile telephone. It is also possible to let a computer system in the drawing de-vice identify which positions are to be interpreted as graphical inputs and which are to be interpreted as vis-ual properties. The information corresponding to graphi-cal inputs with particular properties can then be trans-mitted to another computer system, for example a personal computer.
Fig. 2 shows an alternative embodiment of a base 3' intended to be part of an arrangement according to the invention. Also here the base 3' comprises a first area 11' and a second area 13'. In this embodiment these are produced as physically separate units. As in the pre-viously shown embodiment, the first area 11' is used to create graphical inputs and to accept a corresponding trace 5'. The second area 13' is used to assign visual properties to the graphical inputs.
When a visual property is chosen, this property may preferably be fed back to the user in some way in order to acknowledge the choice of visual property. If, for instance, the drawing device communicates with a personal computer and the user chooses the visual property blue, the legend "blue" may be displayed on the monitor of the personal computer. If the drawing device communicates with a cellular telephone, a display on this telephone may be used in the same way. Alternatively, a display could be provided on the drawing device itself in order to achieve this functionality.
Fig. 3 shows a further embodiment of a base 3" ac-cording to the invention. The base may generally consist of a paper sheet, which is an inexpensive solution. It may also be made of a synthetic material such as polymer, which could allow ink-text and -figures on the surface to be easily erased. The base, as mentioned, is provided with a position-coding pattern. Also here the base 3"
comprises a first area 11" and a second area 13". As in the previously shown embodiment the first area 11" is used to create graphical inputs and to accept a corre-sponding trace 5". The second area 13" is used to assign visual properties to the graphical inputs. The second 5 area 13" has here a number of divisions 23, 25, 27, 29, 31, 33, each containing a number of sub-areas 21". Each sub-area 21" comprises a set of positions. When a computer system in the arrangement detects any of the positions within this set, this is recorded as infor-10 mation concerning a visual property corresponding to this sub-area 21". The position codes in the sub-area 21" do not normally occur within other sub-areas in the base 3".
The information concerning a visual property can be colour information. The base 3" has here a first division 23 and a third division 27 in the second area 13" which are used for recording colour information. The sub-areas within the first division 23 are printed with alphanume-ric indicators 22" signifying the colours represented by the sub-areas. In this case these consist of the names of the colours, but, for example, colour codes could also be used. The sub-areas in the third division 27 have been coloured with the colours (shown here by different shading) they represent, which provides a user interface, which is independent of language. The second division 25 is used in a similar way to represent line thickness in-formation and the fourth division 29 is used to represent line type information. In fig 3, there is shown 16 separate sub-areas, each having a numeral 0 to 9 and letters A to F attributed to each sub-area. When the drawing device points at one such area a numeral or letter corresponding to this sub-area may be inserted in the message. In this way, character recognition can be avoided. There may be further sub-areas, for example corresponding to all commonly used letters A to Z and a to z to enable insertion of normal characters. This may be used for specifying for instance an e-mail address, a fax number or a keyword. These sub-areas may thus be used to achieve non-graphical inputs as well as applying properties to graphical inputs. In this way virtually any type of simulated keyboard with for instance ASCII-characters may be achieved.
A fifth division 31 in the second sub-area 13"
comprises visually separated sub-areas, each provided with at least one alphanumeric character. By pointing at a sequence of these characters the user can input an arbitrarily long code, corresponding to a particular visual property. In this way a small surface can be pro-vided with means for reliable indication of a large num-ber of properties.
A sixth division 33 is used for specifying in which layer a graphical input is to be deposited in for example a drawing. Applying graphical inputs on different lavers may be useful in many applications. For instance, a machine drawing may be completed in a first layer and legends explaining features of the machine may be placed in a second layer. Then it is optional whether the explanations should be displayed or not. Different recipients may also be emailed with different sets of layers.
It is also possible to interrelate different sub-areas in the second area. Thus, for instance, a specific layer may be assigned specific properties, such as a specific line width and a specific line colour.
Graphical inputs may be assigned other types of visual properties. A graphical input may be assigned a "text"-property, which makes the system apply OCR
(Optical Character Recognition) functionalities on the input. A recorded legend may be given a visual property such as "bold" or "italic" by using a corresponding subarea.
The same concept applies to geometrical forms such as circles and rectangles. A coarse circle form inputted by the user may then, for instance, be perfected by the system, by applying a "circle" subarea. Alternatively,., the user may specify a centre and radius for a circle in the first area and mark a "circle" subarea in the second area. Similarly, logos and other figures may be drawn.
Other subarea-functions may be "erase" Ie_ete objects in an area:, "clear" (delete all objects) and "undo" (delete the latest inputted object).
Fig. 4 shows diagrammatically the steps in a compu-ter program suitable for incorporation in an arrangement according to the invention where a base has owc areas.
The program, which can be stored on any digital storage medium (for example a diskette), defines steps as fol-lows. After the identification 41 of a positicn, which is preferably carried out in the drawing device, it is determined 43 whether the position lies within the first area. If such is the case, there is a first recording 45 of the position information as a graphical inooo. This first recording comprises a number of subrouo:nes (not shown). Otherwise the position lies within the second area, so that a second recording 47 of the pcsicion in-formation takes place as information concerning visual properties of a graphical input. The second recording also comprises a number of sub-routines (not s=own).
The scope of the patent protection applied for is not restricted to the embodiments described above. The invention can be varied and changed in a number of ways within the scope of the following claims.
Claims (39)
1. A system for digitizing a freehand graphic, the system comprising: a base including: a surface; a position-coding pattern fixed to the surface and detectable by an optical sensor; a first area of the surface; and a second area of the surface; a drawing device having an optical sensor functional to detect a position in the position-coding pattern; and a microprocessor adapted to perform the following actions: determining if the position detected by the optical sensor is in the first area or the second area; if the position is in the first area of the surface, then interpreting the position as a point in the freehand graphic; and if the position is in the second area of the surface, then interpreting the position as a selection of a property for the freehand graphic.
2. The system of claim 1, wherein the drawing device includes the microprocessor.
3. The system of claim 1, wherein the microprocessor resides externally of the drawing device.
4. The system of claim 1, further comprising a cellular phone, and wherein the cellular phone includes the microprocessor.
5. The system of claim 1, further comprising a display to indicate a property selected from the second area.
6. The system of claim 1, wherein said position-coding pattern is printed on said surface of said base.
7. A device for enabling the digitization of a freehand graphic, the device including a base comprising: a surface; a position-coding pattern fixed to the surface and detectable by and optical sensor; a first area of the surface; and a second area of the surface visually distinct from the first area, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises an indication of a property for a freeform graphic.
8. The device of claim 7, wherein the second area is physically separated from the first area.
9. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas.
10. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises a label representing a property for a freeform graphic.
11. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises an indication of a color for a freeform graphic.
12. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises an indication of a line thickness for a freeform graphic.
13. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises an indication of a type of line for a freeform graphic.
14. The device of claim 7, wherein the second area includes a plurality of visually distinct sub-areas, and at least one of the sub-areas comprises an indication of a layer for deposition of a freeform graphic.
15. The device of claim 7, wherein said position coding pattern is printed on said surface of said base.
16. A drawing device for digitally creating a freeform graphic, the drawing device comprising: an optical sensor for detecting a position in a position-coding pattern fixed to a surface; and a microprocessor adapted to perform the following actions:
determining if the position detected by the optical sensor is in a first area of the surface; if the position is in the first area, then interpreting the position as a point in the freehand graphic;
determining if the position detected by the optical sensor is in a second area of the surface; and if the position is in the second area, then interpreting the position as a selection of a property for the freehand graphic.
determining if the position detected by the optical sensor is in a first area of the surface; if the position is in the first area, then interpreting the position as a point in the freehand graphic;
determining if the position detected by the optical sensor is in a second area of the surface; and if the position is in the second area, then interpreting the position as a selection of a property for the freehand graphic.
17. The drawing device of claim 16, wherein the microprocessor is further adapted to assign a time-stamp to the position detected by the optical sensor.
18. The drawing device of claim 16, wherein the microprocessor is further adapted to determine an order in which the position was detected relative to other positions detected by the optical sensor.
19. The drawing device of claim 16, wherein said position coding pattern is printed on said surface.
20. A method of digitizing a freehand graphic, the method comprising:
receiving a position indicator detected on a position-coding pattern fixed to a surface by an optical sensor as the optical sensor moves over the surface; determining if a position corresponding to the position indicator lies in a first area of the surface; if the position lies in the first area, then interpreting the position as defining part of the freehand graphic; determining if the position corresponding to the position indicator lies in a second area of the surface; and if the position lies in the second area, then determining a property for the freehand graphic.
receiving a position indicator detected on a position-coding pattern fixed to a surface by an optical sensor as the optical sensor moves over the surface; determining if a position corresponding to the position indicator lies in a first area of the surface; if the position lies in the first area, then interpreting the position as defining part of the freehand graphic; determining if the position corresponding to the position indicator lies in a second area of the surface; and if the position lies in the second area, then determining a property for the freehand graphic.
21. The method of claim 20, further comprising assigning a time-stamp to the position corresponding to the position indicator.
22. The method of claim 20, further comprising determining an order in which the position indicator was detected relative to other positions detected by the optical sensor.
23. The method of claim 20, wherein determining a property for the freehand graphic comprises: determining a sub-area of the second area in which the position lies; and determining that the property for the freehand graphic comprises a property represented by the sub-area.
24. The method of claim 20, further comprising if the position lies in the second area, then displaying a portion of the freehand graphic drawn after determining the property for the freehand graphic in visual accordance with the property.
25. The method of claim 20, further comprising if the position lies in the second area, then after determining the property for the freehand graphic, applying the property determined to all portions of the freehand graphic created until a new property for the freehand graphic is selected.
26. The method of claim 20, further comprising if the position lies in the second area, then displaying a portion of the freehand graphic drawn before determining the property for the freehand graphic in visual accordance with the property.
27. The method of claim 20, wherein the property is selected from the group consisting of color, line thickness, line type, and layer.
28. A computer-readable medium having computer-executable instructions for performing the method of claim 20.
29. A computer system adapted to perform the method of claim 20.
30. The method of claim 20, wherein said position coding pattern is printed on a surface to be read by said optical sensor.
31. A method of digitizing a freehand graphic, the method comprising:
receiving from an optical sensor an indicator of a position in a selection area of a position-coding pattern fixed to a surface; determining from a plurality of visual properties a visual property mapped to the position in the selection area; and until a new indicator of a position in the selection area of the position-coding pattern is received, applying the visual property to portions of the freehand graphic thereafter drawn by movement of the optical sensor over a drawing area of the position-coding pattern.
receiving from an optical sensor an indicator of a position in a selection area of a position-coding pattern fixed to a surface; determining from a plurality of visual properties a visual property mapped to the position in the selection area; and until a new indicator of a position in the selection area of the position-coding pattern is received, applying the visual property to portions of the freehand graphic thereafter drawn by movement of the optical sensor over a drawing area of the position-coding pattern.
32. The method of claim 31, further comprising displaying an indication of the visual property when it is being applied.
33. A computer-readable medium having computer-executable instructions for performing the method of claim 31.
34. The method of claim 31, wherein said position coding pattern is printed on a surface to be read by said optical sensor.
35. A device for enabling the digitization of a freehand graphic, the device including a base comprising: a surface; a position-coding pattern fixed to the surface and detectable by an optical sensor; a first area of the surface; a second area of the surface having no overlap with the first area; the second area having a plurality of sub-areas; and at least one of the plurality of sub-areas having a visual indicator representing specific information a user can submit to a computer system by moving a drawing device including the optical sensor over the at least one of the plurality of sub-areas.
36. The device of claim 35, wherein the visual indicator comprises at least one alphanumeric symbol.
37. The device of claim 35, wherein the plurality of sub-areas are visually separated.
38. The device of claim 35, wherein the specific information comprises an ASCII code corresponding to the visual indicator.
39. The device of claim 35, wherein said position coding pattern is printed on said surface of said base.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0000945A SE517984C2 (en) | 2000-03-21 | 2000-03-21 | Arrangement for input of information |
| SE0000945-6 | 2000-03-21 | ||
| PCT/SE2001/000585 WO2001071473A1 (en) | 2000-03-21 | 2001-03-21 | Data input arrangement |
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| CA2400732A1 CA2400732A1 (en) | 2001-09-27 |
| CA2400732C true CA2400732C (en) | 2011-02-08 |
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| CA2400732A Expired - Fee Related CA2400732C (en) | 2000-03-21 | 2001-03-21 | Method and system for digitizing freehand graphics with user-selected properties |
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2001
- 2001-03-21 CN CNB01806759XA patent/CN1227578C/en not_active Expired - Fee Related
- 2001-03-21 EP EP01914307A patent/EP1269300A1/en not_active Ceased
- 2001-03-21 CA CA2400732A patent/CA2400732C/en not_active Expired - Fee Related
- 2001-03-21 AU AU2001239653A patent/AU2001239653A1/en not_active Abandoned
- 2001-03-21 WO PCT/SE2001/000585 patent/WO2001071473A1/en active Application Filing
- 2001-03-21 JP JP2001569599A patent/JP4783534B2/en not_active Expired - Lifetime
- 2001-03-21 KR KR1020027011964A patent/KR100799054B1/en not_active IP Right Cessation
- 2001-03-21 CN CNB2005100065613A patent/CN1316350C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4783534B2 (en) | 2011-09-28 |
| CN1316350C (en) | 2007-05-16 |
| EP1269300A1 (en) | 2003-01-02 |
| CN1418339A (en) | 2003-05-14 |
| CA2400732A1 (en) | 2001-09-27 |
| JP2003528387A (en) | 2003-09-24 |
| SE517984C2 (en) | 2002-08-13 |
| CN1673944A (en) | 2005-09-28 |
| CN1227578C (en) | 2005-11-16 |
| KR20020088080A (en) | 2002-11-25 |
| WO2001071473A1 (en) | 2001-09-27 |
| SE0000945L (en) | 2001-09-22 |
| AU2001239653A1 (en) | 2001-10-03 |
| SE0000945D0 (en) | 2000-03-21 |
| KR100799054B1 (en) | 2008-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150323 |