JP2007226323A - Digital pen input system and digital pen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To clearly distinguish and input written information on multiple kinds of events while using the same exclusive paper. <P>SOLUTION: A digital pen DP is provided with a plurality of writing parts C1-Cm of different ink colors, and these writing parts are selectively used to write the written information of different colors on the exclusive paper SP. Further, identification tags TG1-TGm are provided corresponding to the writing parts C1-Cm, and the writing parts C1-Cm in use are detected by the identification tags TG1-TGm. The identification information of the identification tags are added to image information TG1-TGm read by a camera 3, and once stored as written data in a storage unit 4 and then transmitted to a server SV from a communication unit 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a digital pen input system capable of processing arbitrary writing information as digital data using dedicated paper and a digital pen, and a digital pen used in the system.

  Conventionally, as a pointing device for reading coordinate information on a plane, there are a mouse used in a personal computer and a digitizer used for inputting drawing data such as CAD (Computer Aided Design) (for example, see Non-Patent Document 1). reference.). The digitizer includes a pen-type or mouse-type input unit for indicating a position on the screen and a plate-like or sheet-like detection unit for detecting position coordinates designated by the input unit. The digitizer is suitable for inputting digital information in fine work because the mouse indicates the relative position from the current position of the mouse pointer, while specifying the absolute position on the plane corresponding to the screen.

  In addition, an electromagnetic digitizer is used in a tablet personal computer (Tablet PC). The electromagnetic digitizer arranges a sensor board on the back side of the liquid crystal panel. The digital pen detects a magnetic field generated by the sensor board and returns a response signal, thereby detecting position information and writing pressure (see, for example, Non-Patent Document 1).

On the other hand, Anotopen (registered trademark) developed by Anoto, Sweden is known as an application utilizing a digital pen (see, for example, Non-Patent Document 3).
The Anoto function is realized by using dedicated paper on which a unique dot pattern is printed for each unit area, a digital pen, and a server. In addition to the writing unit, the digital pen is provided with a small camera, a pen pressure sensor, an image processor, a memory, a communication unit, and a power supply unit. Then, the writing information such as dots, characters, and figures written on the dedicated paper by the writing unit is optically read by a small camera together with the dot pattern, and the position of the pen based on the read dot pattern, the writing information Recognizes handwriting and stroke order, speed of writing, etc. Then, the information representing the recognized handwriting is stored in the memory as writing detection data together with the writing pressure detected by the writing pressure sensor and the date / time information obtained from the internal clock, and then read out from the memory and sent to the server by the communication unit. Send. For example, the server generates display data in a desired form by receiving and arbitrarily processing the handwriting detection data transmitted from the digital pen.

  The digital pen input system using this Anoto function is an effective solution that promotes computerization while inheriting many existing business processing forms by using pen and paper, which are easy analog information input tools. It has become. For example, an electronic schedule book, an electronic medical record, an electronic scoring system, an electronic purchase order, and a golf score card have been developed as applications that apply the Anoto function.

http://e-words.jp/w/E38387E382B8E382BFE382A4E382B6.html

http://pcweb.mycom.co.jp/special/2002/tablet/003.html

http://www.anoto.co.jp/

  However, in the conventional digital pen input system using the Anoto function, if information on multiple types of events with different attributes and items is written on the same dedicated paper, it is difficult to distinguish these types of events from the mixed information. Become. For example, when a disaster investigation record at the time of a disaster is recorded on the paper, if the landslide occurrence area and the building collapse area are almost the same, the graphic representing each area is drawn from the handwriting information digitized by the digital pen. It becomes difficult to distinguish, and as a result, the required research analysis cannot be performed.

  On the other hand, when investigating a plurality of items, it may be possible to input writing information using a special paper different for each investigation item. However, in such an input form, it is necessary to prepare as many dedicated papers as the number of survey items, which leads to a decrease in workability and an increase in running cost.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is to make it possible to input writing information of a plurality of types of events clearly while using the same dedicated sheet. It is an object of the present invention to provide a digital pen input system that improves workability and reduces running costs.

  To achieve the above object, the present invention provides a digital pen input comprising a sheet on which a different dot pattern is displayed for each unit area, and a digital pen for writing writing information consisting of dots or lines on the sheet. In the system, a plurality of writing parts that bleed out different color inks on the digital pen, a writing part selection part for selecting these writing parts, and a color of the selected writing part are identified. Identification means is newly provided. And the writing information described on the said sheet | seat is optically read with a dot pattern by the said selected writing part, and the writing locus | trajectory of this writing information is recognized based on a dot pattern. Then, the information indicating the recognized writing locus is stored in association with the information indicating the color of the identified writing portion.

  According to the present invention, it is possible to describe writing information of a plurality of colors using one digital pen. The recognized handwriting information is stored in association with the identification information representing the ink color. For this reason, it becomes possible to process a plurality of writing information mixedly written on one sheet of dedicated paper SP by color, and different digital pens or different dedicated sheets can be used for writing different types of information. This eliminates the need for use, thereby maintaining good input workability and reducing running costs.

The present invention is also characterized by having the following specific configuration.
In the first configuration, as means for identifying the color of the writing unit, an identification tag is provided in association with each of the plurality of writing units, and the selected writing is based on the identification information generated from these identification tags. The color of the part is identified. If comprised in this way, a color can be identified by a simple process.

  In the second configuration, the writing information read by the imaging unit is converted into spatial image information represented by hue, saturation, and brightness, the hue component is extracted from the spatial image information, and the extracted hue component is also stored. And the color of the selected writing part. If comprised in this way, the color of a writing part can be identified without providing an identification tag, and there exists an advantage which can be comprised cheaply.

  In the third configuration, an information processing device that can be connected to a communication network is further provided, and the information indicating the stored writing locus and the information indicating the color of the writing portion are transmitted from the digital pen to the information processing device. The information processing apparatus receives the information indicating the writing locus and the information indicating the color of the writing portion transmitted from the digital pen, and based on the received information indicating the writing locus and the information indicating the color of the writing portion. The writing information is processed according to the color of the writing part. With this configuration, it is possible to quickly transfer information generated by the digital pen to the information processing apparatus and generate desired color-specific processing data.

  In particular, it is preferable that the information indicating the writing trajectory and the information indicating the color of the writing part are transmitted in real time from the digital pen to the information processing apparatus while writing. If it does in this way, it will become possible for an administrator to confirm the written information which the investigator described on the exclusive sheet outdoors on the information processing apparatus installed indoors in real time and for each color.

  According to a fourth configuration, in the information processing apparatus, a writing table transmitted from the digital pen is provided with a memory table for storing information indicating correspondence between colors of the writing units of the digital pen and a plurality of investigation target items. The item to be investigated corresponding to the information representing the color of each is identified based on the information stored in the memory table. And based on this identification result, the information showing the writing locus | trajectory sent from the digital pen is processed for every investigation object item. If comprised in this way, in an information processing apparatus, it will become possible to perform the process according to investigation object item using the information showing the color of the writing part sent from a digital pen.

In short, in the present invention, the digital pen is provided with a plurality of writing parts that bleed out inks of different colors and a means for identifying the colors, and the color of the writing part selected from the writing parts is identified. Information representing the color is stored in association with information representing the writing trajectory.
Therefore, according to the present invention, it is possible to input writing information of a plurality of types of events clearly using the same dedicated sheet, thereby improving the input workability and reducing the running cost. An input system can be provided.

Embodiments according to the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a schematic configuration diagram showing a first embodiment of a digital pen input system according to the present invention.
The system of this embodiment uses the Anoto function, and is realized by a dedicated paper SP, a digital pen DP, and a server SV. On the dedicated paper SP, a unique square dot pattern (annot pattern) consisting of 6 × 6 = 36 dots is printed for each unit area (1.5 mm square). For example, as shown in FIG. 12, each dot pattern is arranged such that 36 dots are slightly shifted from the orthogonal point of the grid in either the upper, lower, left, or right directions. Each dot pattern is unique. In addition, on the dedicated paper SP, for example, the identification information and the map of the survey target area are printed or described for each survey item in a density or color that does not inhibit the reading of the dot pattern.

  The digital pen DP includes a plurality of writing parts C1 to Cm having different ink colors and a selection part 2 for selectively selecting these writing parts C1 to Cm. The writing parts C1 to Cm are each composed of a pen tip and an ink cartridge. Identification tags TG1 to TGm are attached to the writing parts C1 to Cm, respectively. Each of these identification tags TG1 to TGm generates different identification information set in advance to identify the ink color.

  The digital pen DP includes an image processor 1, a camera 3, a storage unit 4, a communication unit 5, and a power supply unit 6 for supplying power supply voltages to these circuit units. The camera 3 uses a solid-state imaging device, and the imaging range that can be read at one time is set to be equivalent to the size of the dot pattern consisting of the above 6 × 6 = 36 dots. The communication unit 5 is used for data communication with the server SV. For example, Bluetooth (registered trademark) is used as the communication method. When the server SV is a portable information processing device such as a notebook personal computer, the digital pen DP and the server SV are connected via a signal cable such as a USB cable. You may do it.

  The image processor 1 is configured as follows. FIG. 3 is a block diagram showing the functional configuration. That is, the image processor 1 includes a CPU (Central Processing Unit) 11 formed of a microprocessor. A program memory 13 is connected to the CPU 11 via the bus 12, and a communication interface 15, a tag interface 16, a camera interface 17, a clock circuit 18, and a memory interface 19 are connected to the CPU 11, respectively.

  The communication interface 15 performs communication processing for transmitting writing data to and from the server SV via the communication unit 5 under the control of the CPU 11. The tag interface 16 receives the identification information (ink cartridge ID) of the writing units C1 to Cm selected by the selection unit 2 from the identification tags TG1 to TGm and passes it to the CPU 11. The camera interface 17 drives the camera 3 under the control of the CPU 11 to capture writing information and dot pattern image information on the dedicated paper SP imaged by the camera 3. The clock circuit 18 outputs information representing the current date and time.

  The storage unit 4 is connected to the memory interface 19. The storage unit 4 is provided with a dot pattern / position correspondence table 41 and a writing information storage unit 42. The dot pattern-position correspondence table 41 stores information representing the position coordinates of the dot pattern on the dedicated paper SP in association with the identification information of each dot pattern printed on the dedicated paper SP. Used to recognize or handwriting. The writing information storage unit 42 temporarily stores the image information of the dedicated paper SP imaged by the camera 3, and the writing data generated by a recognition processing program and a writing data generation program, which will be described later, is stored in the surge SV. Remember until it is sent.

  The program memory 13 includes a reading control program 131, a recognition processing program 132, an ink cartridge identification program 133, a writing data generation program 134, and a writing data transmission control program 135 as programs necessary for realizing the present invention. Are stored.

  When a writing operation such as a dot or a line is performed on the dedicated paper SP by the writing units C1 to Cm, the reading control program 131 prints the writing information described on the dedicated paper SP in advance on the dedicated paper SP. The CPU 11 is caused to execute control for causing the camera 3 to capture an image together with the dot pattern thus formed and storing the image information obtained by the image capturing in the writing information storage unit 42 of the storage unit 4.

  The recognition processing program 132 reads the stored image information for each dot pattern, recognizes each dot pattern included in the image information, and stores the position coordinate information corresponding to the identification information in the dot pattern of the storage unit 4- Read from the position correspondence table 41. That is, this recognizes the position of the pen tip on the dedicated paper SP and the handwriting of the writing information.

  Each time the writing operation is performed, the ink cartridge identification program 133 receives the identification information from the identification tags TG1 to TGm attached to the writing portions C1 to Cm used for the writing operation via the tag interface 16. CPU11 is made to perform the process acquired by this. The identification information of the identification tags TG1 to TGm is used as information indicating the color of the writing part in use, that is, the color of the ink cartridge.

  The writing data generation program 134 causes the CPU 11 to execute the following processing. That is, the identification information (identifying ink color) of the identification tags TG1 to TGm acquired by the ink cartridge identification program 133 is added to the position coordinate information representing the position of the pen tip recognized by the recognition processing program 132 and the handwriting of the writing information. Cartridge ID) is added. At the same time, information representing the current date and time is acquired from the clock circuit 18, and the identification information (digital pen ID) of the digital pen DP stored in advance is read and added to the position coordinate information. Further, the camera 3 reads and recognizes information (dedicated paper ID) indicating the type of dedicated paper previously described on the dedicated paper SP, and adds the recognized dedicated paper ID to the position coordinate information. Thus, handwritten data is generated. Then, the generated writing data is stored in the writing information storage unit 42 of the storage unit 4.

  The writing data transmission control program 135 reads writing data generated by the writing data generation program 134 corresponding to the writing operation from the writing information storage unit 42 of the storage unit 4 every time one writing operation is completed. The CPU 11 is caused to execute control for reading and transmitting the read writing data from the communication unit 5 to the server SV.

  On the other hand, the server SV is configured as follows. FIG. 4 is a block diagram showing the functional configuration. In other words, the server SV is connected to a CPU (Central Processing Unit) 21 via a bus 22 with a program memory 23 and a data memory 24, and a communication interface 25 and an input / output interface 28.

  The communication interface 25 performs communication processing for receiving writing data with the digital pen DP described above via the communication unit 26 under the control of the CPU 21. An input device 29 such as a keyboard and a mouse and a display device 30 including a liquid crystal display (LCD) are connected to the input / output interface 28. The input / output interface 28 recognizes the input information input from the input device 29 and passes it to the CPU 21. At the same time, display data is received from the data memory 24 under the control of the CPU 21, and this display data is displayed on the display device 30.

  The data memory 24 is provided with a writing data storage unit 241 and a processing information storage unit 242. The writing data storage unit 241 is used for storing writing data transmitted from the digital pen DP. The processing information storage unit 242 is used to store survey information and the like obtained by processing with an application program described later.

  The program memory 23 stores a pen authentication processing program 231, an application selection program 232, and a plurality of application programs 233 to 23n. The application programs 233 to 23n are prepared in advance for each type of the dedicated paper SP or each ink color, and cause the CPU 21 to execute the processing of the survey information for a predetermined survey target item.

  The pen authentication processing program 231 causes the CPU 21 to execute processing for authenticating the validity of the digital pen DP based on the digital pen identification information (digital pen ID) included in the writing data sent from the digital pen DP. .

  The application selection program 232 executes processing for selecting the application programs 233 to 23n corresponding to the dedicated paper SP based on the identification information of the dedicated paper SP included in the writing data sent from the digital pen DP. Let At this time, the optimum application programs 233 to 23n may be selected in consideration of the identification information (cartridge IDs representing ink colors) of the identification tags TG1 to TGm in addition to the identification information of the dedicated paper SP. .

Next, the operation of the system configured as described above will be described.
Prior to the survey, the surveyor selects, for example, a dedicated paper SP on which a map of the survey target area that he is in charge of is described. At the same time, the selection unit 2 of the digital pen DP is operated to select and use ink cartridges C1 to Cm of ink colors corresponding to the survey items. Then, the survey result is written on the dedicated paper SP using the digital pen DP at the survey site.

At this time, the following process is executed in the image program 1 of the digital pen DP. FIG. 5 is a flowchart showing the processing procedure and processing contents.
That is, the image processor 1 monitors the start of the writing operation in step 5a. When the start of the writing operation is detected in this state, first, in step 5b, identification information of the identification tags TG1 to TGm corresponding to the ink cartridge currently in use is acquired as an ID for identifying the color of the ink cartridge. Subsequently, the current date and time information is acquired from the clock circuit 18 in step 5c.

  Next, the image program 1 captures the image information of the handwriting and the dot pattern imaged by the camera 3 in step 5d via the camera interface 17, and temporarily stores the captured image information in the writing information storage unit 42 of the storage unit 4. Remember. In step 5e, the temporarily stored image information is read from the writing information storage unit 42 for each dot pattern, the dot pattern is image-recognized, and the position coordinate information corresponding to the dot pattern identification information is stored in the storage unit. 4 is read from the dot pattern-position correspondence table 41. Thus, the position of the pen tip on the dedicated paper SP and the handwriting of the writing information are recognized.

  In step 5f, the image program 1 adds the recognized pen tip position and the position coordinate information indicating the handwriting of the writing information to the identification information of the identification tags TG1 to TGm, the date and time information of the clock circuit 18, and the pen information. Identification information and information indicating the type of dedicated paper are added. Thus, handwritten data is generated. Then, the generated writing data is stored in the writing information storage unit 42 of the storage unit 4.

The image processor 1 monitors the end of the writing operation in step 5g, and reads and recognizes image information and generates and stores writing data in steps 5d to 5f until one writing operation ends. Repeatedly. On the other hand, when the end of the one writing operation is detected, the image processor 1 shifts from step 5g to step 5h, where it corresponds to the one writing operation from the writing information storage unit 42 of the storage unit 4. Read the writing data. Then, the writing data is transmitted from the communication unit 5 to the server SV via the communication interface 15.
Thereafter, each time a writing operation is performed, the digital pen DP executes the processing from step 5a to step 5h described above.

On the other hand, the server SV executes the following processing. FIG. 6 is a flowchart showing the processing procedure and processing contents.
That is, the CPU 21 of the server SV monitors the arrival of handwritten data in step 6a. In this state, when writing data arrives from the digital pen DP and is received by the communication unit 26, the CPU 21 fetches the received writing data through the communication interface 25 in step 6b and writes the writing data in the data memory 24. The data is stored in the storage unit 241.

  When the writing data is stored, the CPU 21 first authenticates the validity of the digital pen DP based on the identification information (digital pen ID) of the digital pen included in the writing data in step 6c. When the validity of the pen is confirmed, the CPU 21 next extracts a dedicated paper ID from the writing data in step 6d. Then, based on the extracted dedicated paper ID, an application program corresponding to the type of the dedicated paper is selected in step 6e. At the same time, in step 6f, the cartridge ID is extracted from the writing data, and the ink color is determined based on the extracted cartridge ID. In step 6g, the determined ink color is given as a parameter to the application program, thereby causing the color-specific processing to be performed on the pen position and handwriting information included in the writing data.

  Finally, the processing information generated by the processing is stored in the processing information storage unit 242 of the data memory 24. When a display command is input by the operator, the corresponding processing information is read from the processing information storage unit 242 and displayed on the display device 30. When a print command is input, it is transferred to a printer (not shown) and printed out.

  FIG. 7 is a diagram illustrating a description example of writing information by the digital pen DP and a display example of writing data in the server SV. As shown in the drawing, when writing information such as lines is written on the same dedicated paper SP by selectively using writing parts C1 to Cm having different ink colors of the digital pen DP, the writing information is stored in the server SV. Separately identified and displayed on the display device 30 as it is.

  The CPU 21 monitors the end of reception of the writing data in step 6i, and until the reception of all the writing data is ended, the processing of the writing data, the application program selection processing, and the information processing for each ink color are performed in steps 6b to 6h. Processing and processing information storage / display processing are repeatedly executed. When reception of all writing data is completed, a series of processes for writing data transmitted from one digital pen DP is ended.

  As described above, in the first embodiment, a plurality of writing parts C1 to Cm having different ink colors are provided in the digital pen DP, and writing information of different colors is written on the dedicated paper SP by selectively using them. Identification tags TG1 to TGm are provided in association with the writing parts C1 to Cm, and the writing part in use is detected by these identification tags. And the identification information of the said identification tag is added to the image information read by the camera 3, this is preserve | saved as writing data, and it is made to transmit to server SV.

  Therefore, it is possible to describe writing information of a plurality of colors using one digital pen DP. Further, since the position coordinate information representing the recognized pen position, handwriting, etc. is stored together with the identification information of the identification tag representing the color of the ink cartridge and then transmitted to the server SV, the server SP is mixed in one dedicated paper SP. It is possible to process and display a plurality of writing information described in the above by color. For this reason, it is not necessary to use different digital pens DP and different dedicated paper SPs for writing different information, thereby maintaining good input workability and reducing running costs.

(Second Embodiment)
The second embodiment of the present invention converts image information read by a camera into spatial image information represented by hue, saturation, and brightness when identifying the color of a writing part in use in a digital pen. The hue component is extracted from the spatial image information, and the color of the writing portion in use is identified based on the extracted hue component.

The second embodiment of the present invention will be described in detail below. The configurations of the dedicated paper SP, the digital pen DP, and the server SV will be described by extending the reference numerals described in the first embodiment.
In order to realize the functions of the present embodiment, the program memory 13 provided in the image processor 1 of the digital pen DP stores a spatial image conversion processing program and a color identification processing program.

The space image conversion processing program causes the CPU 11 to execute processing for converting image information captured by the camera 3 into an HSV space image. The HSV space image includes an H (Hue / hue) component, an S (Saturation / saturation) component, and a V (Value / lightness) component.
The color identification processing program extracts an H (Hue / hue) component from the converted HSV space image. And CPU11 is made to perform the process which identifies the ink color of the writing parts C1-Cm in use based on this extracted H (Hue / hue) component.

FIG. 8 is a flowchart showing a processing procedure and processing contents by the image processor 1 of the digital pen DP according to the second embodiment. In the figure, the same parts as those in FIG.
In the digital pen DP, when the image processor 1 detects the start of the writing operation in step 5a, the image information of the handwriting and the dot pattern captured by the camera 3 is captured via the camera interface 17 in step 5d. The information is temporarily stored in the writing information storage unit 42 of the storage unit 4. In step 8a, the stored image information is read out and converted into an HSV space image. Subsequently, in step 8b, an H (Hue / hue) component is extracted from the converted HSV space image and extracted. Based on the H (Hue / hue) component, the ink colors of the writing parts C1 to Cm in use are identified.

  Subsequently, the image processor 1 acquires the current date and time information from the clock circuit 18 in step 5c, and reads and recognizes information (dedicated paper ID) indicating the type of the dedicated paper SP. In step 5e, the temporarily stored image information is read from the writing information storage unit 42 for each dot pattern, the dot pattern is image-recognized, and the position coordinate information corresponding to the dot pattern identification information is stored in the storage unit 4. Are read from the dot pattern-position correspondence table 41. Thus, the position of the pen tip on the dedicated paper SP and the handwriting of the writing information are recognized.

  Then, in step 5f, the image program 1 adds information indicating the ink color of the writing parts C1 to Cm identified in the step 8b to the position coordinate information indicating the recognized pen tip position and the handwriting of the writing information. The date and time information acquired from the clock circuit 18, the identification information (digital pen ID) of the digital pen DP, and the information indicating the type of the dedicated paper SP (dedicated paper ID) are added. Thus, handwritten data is generated. Then, the generated writing data is stored in the writing information storage unit 42 of the storage unit 4.

  Then, the image processor 1 monitors the end of the writing operation in step 5g. When one writing operation is ended, the image processor 1 shifts from step 5g to step 5h, where the writing information storage unit 42 of the storage unit 4 stores the 1 Read the writing data corresponding to the writing operation of the batch. Then, the writing data is transmitted from the communication unit 5 to the server SV via the communication interface 15.

  As described above, in the second embodiment, in the digital pen DP, image information read by the camera 3 is converted into an H (Hue / hue) component, an S (Saturation / saturation) component, and a V (Value / lightness) component. Is converted into the spatial image information represented by the above, and the H (Hue / hue) component is extracted from the spatial image information, and based on the extracted H (Hue / hue) component, The colors are identified. Accordingly, it is possible to identify the colors of the writing parts C1 to Cm without providing the identification tags TG1 to TGm in the writing parts C1 to Cm, thereby making it possible to configure the digital pen DP at low cost.

(Third embodiment)
In the third embodiment of the present invention, a server is provided with a memory table for storing information indicating correspondence between colors of a plurality of writing parts of a digital pen and a plurality of items to be investigated, and the writing transmitted from the digital pen is provided. The investigation target item corresponding to the information representing the color of the copy is identified based on the information stored in the memory table. Based on the identification result, the writing data sent from the digital pen is processed according to the item to be investigated.

The third embodiment of the present invention will be described in detail below. The configurations of the dedicated paper SP, the digital pen DP, and the server SV will be described by extending the reference numerals described in the first embodiment.
In order to realize the functions of the present embodiment, a survey item-color correspondence table is stored in the data memory 24 in the server SV. In this table, information representing the ink colors of the writing portions C1 to Cm is stored in association with the identification information of the plurality of investigation target items. FIG. 10 shows an example. The program memory 23 of the server SV stores a plurality of application programs 233 to 23n that perform information processing by color.

Due to such a configuration, the server SV executes the following color-specific information processing. FIG. 9 is a flowchart showing the processing procedure and processing contents.
That is, in the server SV, when the CPU 21 identifies the ink colors of the writing parts C1 to Cm in use based on the cartridge ID included in the writing data or the H (Hue / hue) component of the HSV space image, first, the CPU 21 proceeds to step 9a. Then, the search target item corresponding to the identified ink color is searched from the check item-color correspondence table. Next, in step 9b, an application program corresponding to the searched survey target item is selected, and information processing for each survey target item is performed according to the selected application program. In step 9 c, survey data is generated and stored in the processing information storage unit 242 of the data memory 24.

  As described above, according to the third embodiment, when the researcher selectively uses the writing parts C1 to Cm of the digital pen DP and enters the information for each item to be investigated on the dedicated paper SP, the server SV According to the ink colors of the writing parts C1 to Cm, the application program of the survey target item corresponding to the ink color is automatically selected, and information processing for each survey target item of the writing data is executed according to this application program. The

  For example, when investigating the actual state of illegal dumping, the survey items “industrial waste”, “oversized waste” and “ Assume that the survey results for "general waste" are entered. In this case, for example, the ink colors “red”, “green”, and “blue” are assigned to the “industrial waste”, “oversized garbage”, and “general waste” that are the above-described investigation target items.

In this state, the investigator selectively uses the ink colors “red”, “green”, and “blue” from the writing parts C1 to Cm of the digital pen DP to provide information for each item to be investigated on the dedicated paper SP. When writing, the server SV identifies the survey items “industrial waste”, “oversized waste” and “general waste” corresponding to the ink colors “red”, “green” and “blue”. Written information is processed by “industrial waste”, “oversized garbage” and “general waste”.
Therefore, the researcher can enter the survey results for a plurality of survey target items in a mixed manner on one dedicated paper SP using one digital pen DP, thereby improving the survey efficiency. it can.

(Other embodiments)
In each of the above embodiments, the writing data is transferred from the digital pen DP to the server SV via a wireless line. However, the present invention is not limited to this. For example, a memory slot for mounting an external storage medium such as a memory card is provided in the digital pen, and writing data is stored in the external storage medium mounted in the memory slot. The writing data may be processed by loading the external storage medium into the memory slot of the server and reading it.

  In the embodiment, the digital pen DP recognizes the dot pattern from the image information captured by the camera 3, recognizes the position coordinate information representing the pen position and the handwriting based on the dot pattern, and the position coordinate information. Is transmitted to the server SV together with information indicating the ink color in use. However, the present invention is not limited to this, and the image data captured by the camera 3 is transferred from the digital pen DP to the server SV together with the color identification information. You may make it recognize the position coordinate information showing the position and handwriting of a pen. In this way, the processing load on the digital pen DP can be reduced.

  Furthermore, writing attribute information such as writing pressure, writing speed, and writing order may be added to the writing data in addition to information indicating the pen position and handwriting, identification information indicating the ink color, and date / time information. In addition, the configuration of the digital pen, particularly the number of writing parts C1 to Cm, the ink color thereof, the ink color identification means, the contents of the recognition process, the writing data transfer means from the digital pen to the server, and the server configuration, particularly processing The processing procedure, contents, and the like can be variously modified and implemented without departing from the gist of the present invention.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in each embodiment. Furthermore, you may combine suitably the component covering different embodiment.

1 is a schematic configuration diagram showing a first embodiment of a digital pen input system according to the present invention. The figure which shows the structure of the digital pen used with the system shown in FIG. The block diagram which shows the function structure of the image processor provided in the digital pen shown in FIG. The block diagram which shows the function structure of the server in the system shown in FIG. The flowchart which shows the process sequence and processing content by the image processor of the digital pen shown in FIG. The flowchart which shows the process sequence and process content by the server shown in FIG. The figure which shows the example of a display of the writing information by the digital pen shown in FIG. 2, and the display example in the server of the said writing information. The flowchart which shows the process sequence and process content by the image processor of the digital pen concerning 2nd Embodiment of this invention. The flowchart which shows the procedure and content of the writing information processing according to color by the server of the digital pen input system concerning the 3rd Embodiment of this invention. The figure which shows an example of the investigation item-color correspondence table used for the writing information processing classified by color shown in FIG. The figure which shows the example of description of the writing information used as the object of the writing information processing classified by color shown in FIG. The figure which shows an example of the dot pattern for implement | achieving an Anoto function.

Explanation of symbols

  SP: dedicated paper, DP: digital pen, SV: server, C1 to Cm ... ink cartridge, TG1 to TGm ... identification tag, 1 ... image processor, 2 ... ink cartridge switching unit, 3 ... camera, 4 ... storage unit, 41 ... dot pattern-position correspondence table, 42 ... writing information storage unit, 5 ... communication unit, 6 ... power supply unit, 11 ... image processor CPU, 12 ... image processor bus, 13 ... image processor program memory, 131 ... read Control program, 132 ... recognition processing program, 133 ... ink cartridge identification program, 134 ... writing information generation program, 135 ... writing information transmission control program, 15 ... communication interface, 16 ... tag interface, 17 ... camera interface, 18 ... clockwise , 19 ... Memory interface, 21 ... Server CPU, 22 ... Server bus, 23 ... Server program memory, 231 ... Pen authentication processing program, 232 ... Application selection program, 233-23n ... Application program, 24 ... Data memory 241 ... Written information storage unit, 242 ... Processing information storage unit, 25 ... Communication interface, 26 ... Communication unit, 27 ... Antenna, 28 ... Input / output interface, 29 ... Input device, 30 ... Display device.

Claims (9)

A sheet on which different dot patterns are displayed for each unit area, and a digital pen for writing writing information consisting of dots or lines on the sheet;
The digital pen is
A plurality of writing parts that bleed out different color inks;
A writing part selection unit for selecting the plurality of writing parts;
An identification means for identifying the color of the writing part selected by the writing part selection part;
Imaging means for optically reading writing information written on the sheet together with the dot pattern by the selected writing unit;
Recognizing means for recognizing information representing a writing trajectory of the writing information read by the imaging means based on the dot pattern read together with the writing information;
A digital pen input system comprising: storage means for storing information representing the recognized writing trajectory in association with information representing the color of the writing portion identified by the identifying means. The identification means includes
An identification tag that is provided in association with each of the plurality of writing units and generates different identification information for each writing unit;
2. The digital pen input system according to claim 1, further comprising means for identifying the color of the writing part selected by the writing part selection unit based on the identification information generated from the identification tag. The identification means includes
Means for converting the writing information read by the imaging means into spatial image information represented by hue, saturation and brightness;
2. A means for extracting a hue component from the spatial image information and identifying a color of a writing portion selected by the writing portion selection section based on the extracted hue component. Digital pen input system. Further comprising an information processing device connectable to a communication network;
The digital pen is
Further comprising transmission means for transmitting information representing the writing trajectory and information representing the color of the writing part stored in the storage means to the information processing apparatus via the communication network;
The information processing apparatus includes:
Means for receiving information representing the writing trajectory and information representing the color of the writing part transmitted from the digital pen;
The processing means for processing the writing information for each color of the writing unit based on the received information indicating the writing trajectory and information indicating the color of the writing unit. Digital pen input system. The processing means includes
A memory table that stores information indicating correspondence between the colors of the plurality of writing parts and the plurality of survey target items;
Means for identifying the survey target item corresponding to the received information indicating the color of the writing unit based on the information stored in the memory table;
5. The digital pen input system according to claim 4, further comprising means for processing the information representing the received writing trajectory for each item to be investigated based on the identification result. A digital pen for writing writing information consisting of dots or lines on a sheet on which a different dot pattern is displayed for each unit area,
A plurality of writing parts that bleed out different color inks;
A writing part selection unit for selecting the plurality of writing parts;
An identification means for identifying the color of the writing part selected by the writing part selection part;
Imaging means for optically reading writing information written on the sheet together with the dot pattern by the selected writing unit;
Recognizing means for recognizing information representing a writing trajectory of the writing information read by the imaging means based on the dot pattern read together with the writing information;
A digital pen comprising: storage means for storing information representing the recognized writing trajectory in association with information representing the color of the writing portion identified by the identifying means. The identification means includes
An identification tag that is provided in association with each of the plurality of writing units and generates different identification information for each writing unit;
7. The digital pen according to claim 6, further comprising means for identifying the color of the writing part selected by the writing part selection unit based on the identification tag. The identification means includes
Means for converting the writing information read by the imaging means into spatial image information represented by hue, saturation and brightness;
7. A means for extracting a hue component from the spatial image information and identifying a color of a writing portion selected by the writing portion selection section based on the extracted hue component. Digital pen. Transmission means for associating information representing the writing trajectory stored in the storage means and information representing the color of the writing portion with each other and transmitting the information to the information processing apparatus via a communication network;
The digital pen according to claim 6, further comprising:

Images