JP2008040544A - Display device with coordinate input device, display method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device with a coordinate input device for matching an input position and a display position according to an indicator. <P>SOLUTION: This display device with a coordinate input device includes a coordinate input means and a display means 4 arranged so as to be overlapped with each other and an indicating means 6 for indicating an arbitrary position on a coordinate input means, wherein the coordinate information of the position indicated by the indicating means 6 is input by the coordinate input means, and the display means 4 is made to display image information corresponding to the input coordinate information. An identifier is added to the indicating means, and a correction value for matching the indicated position with the display position of image information corresponding to the position on the display means 4 is calculated for every instruction means identified by identifier, and the calculated correction value is stored for every identifier added to the instruction means 6, and the display position of the image information on the display 4 is corrected for every identified instruction means 6 based on the correction value stored for every identifier. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device with a coordinate input device that detects an indicated position on a coordinate input region, a display method, and a program.

  Coordinates used to control a connected computer or write characters, figures, etc. by pointing to the coordinate input surface with a pointing tool (for example, a dedicated input pen or finger) and inputting the coordinates An input device exists.

  Conventionally, various types of coordinate input devices have been proposed or commercialized. Among them, there is a coordinate input device that can be used in combination with a display device that displays a screen such as a personal computer. This type of device has been widely used because it can be used in an integrated manner with a display so that the operation of a personal computer or the like on the screen can be easily performed by drawing with a pen on paper.

  In an apparatus in which these coordinate input device and display device are integrated, in order to realize an operation such as drawing with a pen on paper by matching the indication point indicated by the coordinate input device with the display point of the display device An important element.

  Traditionally, a number of proposals have been made to match the input points with the display points. For example, in Patent Document 1, a mark such as a cross or a dot is displayed at a known coordinate point on the display screen in advance, and the coordinate value output at that time is pressed by pressing the mark with the pointing tool. The amount of deviation between the display screen and the coordinate input device is calculated from the difference from the known display coordinate value. Then, a method of storing and holding the value and correcting the input coordinate from the value when normal coordinate input is performed is used.

  Further, the correction includes a configuration for correcting a shift amount due to parallax caused by a thickness of a cover of a display unit and the like in addition to correcting a shift at the time of assembling the display screen and the input surface. .

  Many of such coordinate input devices integrated with a display have been commercialized, such as those in the form of a tablet PC and devices used personally such as PDAs.

  In use in such a form, the user is often only the owner of the device, and since it is a use form by the user alone, in most cases, the above correction formula is applied to the device for each user. In many cases, it is sufficient to have one.

  Even in the case of sharing with other users, the user can move and adjust the position of the device itself at the time of use, so that it can be used in a state close to the parallax of the owner. For this reason, as long as the shift at the time of attachment between the input device of the device itself and the display device is corrected, there is no particular problem in operation with respect to the shift due to parallax.

  Alternatively, in the case of an apparatus configuration in which a shift due to parallax is large, as described in Patent Document 2, it is only necessary to perform a correction operation before each user uses it.

  Patent Document 3 describes a configuration in which a plurality of users operate one screen from different directions. Specifically, a plurality of users display a plurality of windows that are operated on one screen, and store a correction value for correcting a shift for each window operated by each user. And the structure which correct | amends the shift | offset | difference by different observation directions with respect to a display screen by performing different correction | amendment to each is described.

JP-A-63-111425 JP 2004-54413 A Japanese Patent Laid-Open No. 10-340159 JP 2005-258810 A Japanese Patent Laid-Open No. 2005-258811

  In recent years, in addition to the above-mentioned personal usage, a coordinate input device integrated display device combined with a PDP, rear projector, etc. having a large screen has come to be seen. In the coordinate input device provided for such a large display, each of a plurality of operators is allowed to input using a pointing tool, thereby improving convenience and more efficient. There is a demand for purposes such as advancing meetings.

  In such a usage mode, in order to match the input position and the display position, it is not efficient to provide a dedicated window for each user as in the conventional example, so that different users can write in the same window. There is a need to.

  In addition, for users of such a large apparatus, there are differences in height, dominant hand, and the like, and the observation conditions for the display position with respect to the indicated position are different.

  In addition, when a plurality of users perform input or the like at the same time, there is a restriction on the standing position and the like, and even the same user does not necessarily have the same observation condition for the entire screen.

  For such a state, the display unit is not moved for each user, and even if one preset correction value is applied, each difference cannot be corrected, and the input position and The display position may be shifted.

  In addition, in the above-described apparatus, when a plurality of people are inputting simultaneously, it is inefficient and virtually impossible to perform the correction amount determination operation each time each input is made. It is.

  In view of the actual situation, an object of the present invention is to provide a display device with a coordinate input device that can match an input position and a display position in accordance with each pointing tool.

The display device with a coordinate input device according to the present invention includes coordinate input means and display means arranged in an overlapping manner, and instruction means for indicating an arbitrary position on the coordinate input means, and is instructed by the instruction means. A display device with a coordinate input device for inputting position coordinate information by the coordinate input means and displaying image information corresponding to the input coordinate information on the display means, and an adding means for adding an identifier to the instruction means And calculating means for calculating a correction value for matching the indicated position and the display position of the image information corresponding to the position on the display means for each indicating means identified by the identifier. Storage means for storing the correction value for each identifier added to the instruction means, and based on the correction value stored for each identifier, the front of the image information for each identified instruction means. And correcting the display position of the display means.
The display method of the present invention includes coordinate input means and display means arranged in an overlapping manner, and instruction means for indicating an arbitrary position on the coordinate input means, and the position indicated by the instruction means. A display method in a display device with a coordinate input device, in which coordinate information is input by the coordinate input means, and image information corresponding to the input coordinate information is displayed on the display means, wherein an identifier is added to the instruction means Calculating a correction value for matching the indicated position and the display position of the image information corresponding to the position on the display means for each indication means identified by the identifier; and the calculated Storing a correction value for each identifier added to the instruction means, and based on the correction value stored for each identifier, the image information for each identified instruction means And correcting the display position of the shown section.
A program according to the present invention causes a computer to execute each step of the method described above.

  According to the present invention, a correction value is stored for each identifier of a plurality of instruction inputs, and the input position and the display position are corrected by correcting the input of the indicator using a correction coefficient corresponding to each identifier. It is possible to provide a display device with a coordinate input device that can match the values in accordance with each of the pointing tools.

  As a configuration of the coordinate input device superimposed on the display screen, various types of coordinate input devices have been devised and commercialized. Here, a description will be given by taking as an example a light-shielding coordinate input device that has a high affinity with a large screen display and that allows a plurality of users to input simultaneously using a plurality of pointing tools. The details of the light-shielding type coordinate input device capable of inputting a plurality of signals simultaneously are detailed in Patent Documents 4 and 5, and therefore only a brief description will be given in this specification.

(Overview of device configuration)
First, the overall configuration of the coordinate input device will be described with reference to FIG. FIG. 1 is a diagram showing a schematic configuration of a light shielding type coordinate input apparatus according to an embodiment of the present invention.

  In FIG. 1, reference numerals 1L and 1R denote sensor units having a light projecting part and a light receiving part. In the case of this embodiment, as shown in FIG. 1, parallel to the X axis of the coordinate input effective area 3 which is a coordinate input surface, and They are arranged at a position symmetric with respect to the Y-axis and separated by a predetermined distance.

  The sensor units 1L and 1R are connected to the control / arithmetic unit 2, receive a control signal from the control / arithmetic unit 2, and transmit the detected signal to the control / arithmetic unit 2.

  Reference numeral 4 denotes a retroreflective portion having a retroreflective surface that reflects incident light in the direction of arrival. The retroreflecting unit 4 is arranged on the outer three sides of the coordinate input effective area 3 as shown in the figure, and the light projected from the left and right sensor units 1L and 1R in a range of about 90 ° is sent to the sensor units 1L and 1R. Retroreflects towards.

  The retroreflective portion 4 has a three-dimensional structure as viewed microscopically. At present, the retroreflective portion 4 is mainly arranged by regularly arranging bead type retroreflective tape or corner cubes by machining or the like. Retroreflective tape to wake up is known.

  The light retroreflected by the retroreflecting unit 4 is detected one-dimensionally by the sensor units 1L and 1R, and the light quantity distribution is transmitted to the control / arithmetic unit 2.

  The coordinate input effective area 3 is configured as a display screen of a display device such as a PDP, a rear projector, or an LCD panel, and can be used as an interactive input device.

  In the above configuration, when an input instruction is given to the coordinate input effective area 3 by the pointing tool and the light projected from the light projecting portions of the sensor units 1L and 1R is blocked (light shielding portion), the light receiving portions of the sensor units 1L and 1R Then, the light of the light shielding part (reflected light by retroreflection) is not detected. That is, as a result, it is possible to determine from which direction the light could not be detected.

  Therefore, the control / arithmetic unit 2 first detects a plurality of light-shielding ranges of the portion instructed to be input by the pointing tool from the light amount change detected by the left and right sensor units 1L and 1R. And the direction (angle) of the edge part of the light shielding range with respect to each of the sensor units 1L and 1R is calculated from the edge part information of the light shielding range.

  Then, based on the number of detected light-shielding ranges, data obtained from the light-shielding ranges used for coordinate calculation is determined, and coordinates are calculated from the calculated direction (angle), distance information between the sensor units 1L and 1R, and the like. The coordinate value of the pointing tool on the input effective area 3 is calculated geometrically.

  Here, the indicator 6, 6 'used is provided with a switch so that the pen tip can detect contact with the screen (pen down). When an input is made with the pointing tool, this switch information and predetermined pen identification information (pen ID) are sent out toward the main body.

  The received switch information and pen ID are associated with the previously detected coordinate value of the light shielding range, and the interface 7 (for example, RS, USB, etc.) is connected to an external terminal such as a host computer connected to the display device. , IEEE1394 etc.).

(Explanation of sensor unit)
As shown in FIG. 2, each of the sensor units 1L and 1R includes a plurality of imaging lenses 107 (A) and (B), and is configured so that an image from each lens is imaged on the light detection element CCD 104. ing. By configuring in this way, the input area is observed from different positions, and even when input is made with a plurality of indicators, the other indicator is completely in the shadow of one indicator. It is possible to avoid a state such as so-called total eclipse that is hidden.

  This is combined with a coordinate calculation method using the edge information of the light shielding area, which will be described later, so that the coordinate calculation can be performed regardless of the arrangement of the plurality of pointing tools.

  Although not shown, each imaging optical system is provided with an illuminating unit composed of an infrared LED, and lighting control or non-lighting control is performed under the control of the arithmetic control unit 2. Then, light is projected onto the retroreflective member provided in the periphery of the input area.

  Since the projected light is retroreflected in the illuminated direction, it is imaged by each lens and detected as a distribution of light quantity on the CCD 104.

(Explanation of arithmetic control unit)
FIG. 3 is a block diagram showing the configuration of the control arithmetic unit. The light quantity distribution obtained from the CCDs of the sensor units 1L and 1R is converted into digital data by the AD converter 23 and is taken into the CPU 21.

  The CPU 21 stores in advance the initial light amount distribution in a state where there is no input by the pointing tool, takes in the light amount distribution obtained by the sensor unit as described above at a specific sampling rate, and compares it with the initial light amount distribution. ing.

  When an input by the pointing tool is made, a difference from the initial light amount distribution is detected. Therefore, the changed portion is specified as a light shielding range and coordinate calculation is performed. At this time, if a switch signal or an ID signal is transmitted from the pointing tool, the signal is detected by the pen signal receiving unit 5, and the signal is decoded by the SUBCPU 24 and notified to the CPU 21.

(Explanation of coordinate calculation method)
Next, a coordinate calculation method for calculating the position coordinates of the pointing tool when the sensor units on both sides are used will be described.

  As described above, if the light shielding range is specified, the angle of the portion with respect to the reference point can be calculated. For example, when the center of the light-shielding range can be calculated, if the distance DLR between the sensor units 1L and 1R is known, the coordinates of the intersection can be calculated using the angle information in the coordinate system as shown in FIG. It is.

  In addition, when a plurality of inputs are made and their positional relationships overlap when viewed from the sensor, the center of the light shielding range may not be the center of the support as described above.

  However, as described in the above sensor configuration, since the sensor unit observes the region from different positions with the plurality of imaging means, one of the compound eyes is in a partial eclipse state, not a total state. Therefore, the information on the end of the pointing tool can be obtained.

  Assuming that the shape of the pointing tool is substantially circular, the coordinate value can be calculated from the edge information as shown in FIG. In FIG. 5, if one sensor knows the angle of one end and the other sensor knows the angle of two ends, the intersection of the bisectors of the angle at the two intersections P1 and P2 is obtained. Once calculated, the coordinate value of the support can be calculated.

In this way, by performing coordinate calculation from the sensor unit and end information of the compound eye configuration,
It becomes possible to use a plurality of indicators simultaneously.

(Explanation of indicator configuration)
The pointing tool used for input has a configuration as shown in FIG. At the tip of the pointing tool, a pen tip SW 60 is provided as a switch that is turned on when an instruction is given to the screen, and a side SW 62 is provided as a switch for performing an operation such as a right button of a mouse.

  The internal configuration of the pointing tool is as shown in FIG. 7. The switch information is input to the control means 64. When the switch is pressed, the information and the identifier (pen ID) set in advance on the pointing tool are displayed. ) Is transmitted to the main body by driving the light emitting LED 63. In the figure, 66 is a battery as a power source, and 65 is a converter that boosts the battery voltage.

  The signal to be transmitted is configured by a pulse train as shown in FIG. 8A. Each pulse is modulated at a specific frequency in order to avoid influences such as disturbance. In the illustrated example, SW0 and SW1 are transmitted as pen tip SW and side SW signals, and ID0 and ID1 are transmitted as pen ID information.

  In this example, the ID is represented by 2 bits, but of course, it may be composed of any number of bits depending on the system.

  The transmitted signal is detected and demodulated by the pen signal receiving unit 5 on the main body side, detected as a pulse train as shown in FIG. 8B, decoded into each signal data, and used by the main body CPU 21.

(Explanation of position correction)
By using the input area 4 of the coordinate input device as a display screen of the display device, it can be used as a device in which input and output are integrated. In such an apparatus, as described above, there is a problem that the input position and the display position are deviated due to the displacement of attachment and the parallax due to the observation position. In order to absorb this shift, position correction is performed.

  FIG. 9 is a typical example of determining a correction value for performing this position correction. When the position correction value setting mode is activated by a menu, an externally provided switch, a command, or the like, a cross or the like is displayed at a known point of the display position coordinates on the screen. The user uses the support tool to input at a point that seems to match the display position.

  Assuming that the coordinate values of the display position are Px and Py and the coordinate values input by the user are Dx and Dy, as shown in FIG. 10, deviation amounts Δx and Δy can be defined for each coordinate axis. This value is measured at a plurality of points, for example, five points in the example of FIG. 9, and a correction value is determined so that each deviation is minimized.

  There are various correction methods, such as a method that determines the origin, defines the magnification and offset, and corrects them, and determines multiple fixed points and sequentially approaches the coordinate values according to the distance from those points. A method can be considered. What correction method is used is a matter of design choice. Various methods of determining the correction value are conceivable, such as linear correction and correction using higher-order equations, but may be determined in view of the accuracy required of the system.

  Display points for setting correction values are observed at different positions depending on various factors such as the user's standing position, height, and dominant hand.

  For example, as shown in FIG. 11, as an input to the display point P, different positions are designated for a user having a pen with PenID: 1 and a user having PenID: 2.

  Thus, for example, when the correction value of the user with PenID: 1 is applied to the coordinate value of the user with PenID: 2, the deviation is not corrected, and in some cases, it may be observed as if it has been further blurred. It is possible.

  Therefore, in the present application, paying attention to the pen ID used for the correction value determination work, the correction value is calculated from the deviation amount for each ID, and the value is stored. The stored correction value is determined by determining which ID indicating tool the input coordinate value is based on during the normal input operation, and applying the correction value of the ID to the input coordinate value. Allows correction to the user.

  FIG. 12 is a flowchart for the correction value setting operation. When the correction value setting work mode is set by an instruction from an indicator to an icon or the like provided in a menu or an input area, the correction value setting work is started (step S100). At this time, the ID of the pointing tool that has performed the icon instruction is stored (step S101).

  Next, input points for correction value setting are displayed (step S103). At this time, the number of input points n is initialized in advance (step S102).

  If displayed, it is determined whether or not there is an input in the vicinity of the point (step S104). If there is no input, the process branches to step S105, and a timeout is monitored. If there is no input for a certain period of time, the operation is terminated with a timeout. If it is within the time, return to the loop.

  If there is an input, the process moves to step S106, and the ID is inspected for the input coordinate value. If the ID of the input coordinate value is different from the previously stored ID, a loop is performed as in the case where there is no input.

  If the IDs match, the obtained coordinate value is stored (step S107), the number of input points n is incremented, and if the number of input points has not reached the specified number, the display position is changed and displayed again. Loop until input is made.

  When all the points are input, the correction coefficient is calculated (step S110). The calculated correction coefficient is associated with the pen ID and stored in the storage means, and the operation is terminated (steps S111 and S112).

  When an input is made during normal input using the correction coefficient thus obtained, the correction coefficient is selected and determined from the ID, and if the coordinate value is corrected based on the correction coefficient, the input with little positional deviation is ID. It becomes possible every time.

  In the above flow, the ID for supporting the menu, icon, etc. for starting the correction value setting work is first stored, and the correction value setting work is performed. Here, when the mode is shifted to the correction value setting mode by an external command or the like, the ID of the coordinate value first input in the vicinity of the input point is stored, and the operation is performed on the ID. It may be configured.

(Other embodiments)
As described above, in the light-shielding coordinate input device, it is possible to input simultaneously with a plurality of pointing tools. While the ID1 user is making an input on the screen, when the ID2 user makes a new input, the work of the user who has made the input is hindered, and the correction coefficient setting work is performed. Doing is inefficient from a collaborative perspective.

  In addition, when working on an area where a large icon is selected, it may be acceptable to input with a gap, but if you want to perform a detailed input work on a specific area, etc. If the setting is left shifted, the working efficiency will be reduced.

  Therefore, even if another pointing tool is being input, a correction coefficient can be set for a specific area for each ID.

  For example, as shown in FIG. 13, when the user ID1 is performing a drawing operation on the right half of the screen, the user ID2 only needs to be able to set the correction value within the range used by the user ID2. In this way, the ID2 pen is corrected based on its own correction data in the area.

  On the other hand, for ID1, even if the pointing tool enters this area, the correction data in this area is corrected with the correction coefficient set for the entire screen.

  FIG. 14 is a flowchart of correction value setting work for each region. First, the correction value setting mode is activated by clicking the side SW of the pointing tool or the like. At this time, the indicator ID is taken in when the side SW is pressed (step S201).

  When the ID is fetched, for example, a display for prompting the correction area setting is performed near the coordinates where the side SW is pressed (step S202).

  When the display is performed, the process waits until the area is designated by the previously stored ID indicating tool (step S203). When the area is designated, for example, the upper left coordinates of the area are stored as the start point coordinates and the lower right coordinates are stored as the end point coordinates (step S204).

  When the area designation is completed, the correction data acquisition points are initialized (step S205), and the input points are displayed. At this time, the coordinates of the input point are calculated from the start point and end point coordinates of the previously stored area (step S206).

  It is determined whether or not the input point has been input by the pointing tool having the same ID (steps S207 and S209). If the input point has not been input, a loop is made until timeout (step S208).

  When input is made, data is stored (step S210), calculation display of other input points is performed (step S211), and the loop is repeated until all input points are input (step S212).

  When all points have been input, a correction coefficient is calculated (step S213), the ID, the correction coefficient, and the start point / end point coordinates of the target area are stored (step S214), and the setting mode ends.

  In a normal input state, when a coordinate value is obtained, an ID is detected and a search is made as to whether there is a correction coefficient corresponding to the ID.

  If there is a correction coefficient, determine whether the area to be applied is the whole area or a partial area, and if it is a partial area, determine whether the obtained coordinate value is in the corresponding area, If it is within the region, the coordinate value is corrected using the corresponding correction coefficient.

  Assume that a correction coefficient is set for each area for a certain ID as shown in FIG. For such an area, the correction coefficient for a certain coordinate value can be determined as shown in the flowchart of FIG.

  When the coordinate value is acquired (step S301), ID is detected (step S302).

  It is determined whether or not a correction coefficient has already been set for this ID. If it has not been set, a default value is used as the correction coefficient. In this case, the default value may be a value that is not corrected, a correction value set in advance as the system, a correction value set by another ID, or an average value of a plurality of correction values may be used. Good.

  If an area is set, it is determined which area the coordinate value corresponds to (step S305). When the coordinate value is included in area 1 in FIG. 15, the correction coefficient for area 1 is set in step S306, and when it is determined that it is included in area 2 (step S307), the correction coefficient for area 2 is set. (Step S308). If neither is included, the correction value set in the entire area is set (step S309).

  The coordinate value is corrected using the set correction coefficient (step S310) and output is performed (step S311).

  By performing such correction work for each ID, correction specific to each pointing tool can be performed.

  In the above example, there are two areas and the entire area, but it is obvious that the present invention is not limited to this, and more areas may be set in any way. When the areas overlap, the correction coefficients of the two areas may be averaged in the overlapping area, or a newly set area may be used preferentially.

  Release of the area and the correction coefficient in the area may be performed at an arbitrary timing using a menu or the like, or in use in a place such as a conference room where an unspecified number of users use the device, It may be canceled when the device is turned on or off.

  In the description of the above embodiment, the light shielding type coordinate input device has been described as an example. However, the method of the coordinate input device is not limited to this method, and any coordinate input device that can identify the instruction means. For example, it is generally applicable.

  Also, the identification method of the instruction means is applicable as long as the instruction means can be identified by some means, even if communication using infrared light as in the embodiment is not performed. The identification number is not particularly limited.

  Although the embodiment has been described in detail above, the present invention can take an embodiment as a system, apparatus, method, program, storage medium, or the like. Specifically, the present invention may be applied to a system composed of a plurality of devices, or may be applied to an apparatus composed of a single device.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowchart shown in the drawing) that realizes the functions of the above-described embodiments may be directly or remotely supplied to the system or apparatus. In this case, this can also be achieved by reading and executing the supplied program code by the computer of the system or apparatus.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, or the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  Another program supply method is download. In this case, first, a browser on the client computer is used to connect to a home page on the Internet. Then, the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage by downloading it to a recording medium such as a hard disk. It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  It is also conceivable to install the program of the present invention using encryption. In this case, first, the encrypted data is stored in a storage medium such as a CD-ROM and distributed to the user, and the user who clears the predetermined condition is allowed to download key information for decryption from the homepage via the Internet. To do. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS or the like operating on the computer based on the instruction of the program may be a part of the actual processing or Even if all are performed, the function of the above-described embodiment is realized.

  Furthermore, the program read from the recording medium may be written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. In this case, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the written program instructions, and the functions of the above-described embodiment are realized by the processing. Is done.

It is a figure which shows schematic structure of the coordinate input device of the light-shielding system of embodiment of this invention. It is a figure which shows the detailed structure of the sensor unit of embodiment of this invention. It is a block diagram which shows the detailed structure of the control and arithmetic unit of embodiment of this invention. It is a figure for demonstrating the coordinate calculation in the sensor unit which has multiple light-receiving parts of embodiment of this invention. It is a figure for demonstrating an example of the coordinate calculation by the edge part information of the light-shielding range of embodiment of this invention. It is a figure for demonstrating the outline of the instruction | indication means of embodiment of this invention. It is a figure for demonstrating the block configuration of the instruction | indication means of embodiment of this invention. It is a figure explaining the transmission signal from the instruction | indication means of embodiment of this invention. It is a figure explaining the received signal from the instruction | indication means of embodiment of this invention. It is a figure explaining an example of the correction coefficient setting operation | movement of embodiment of this invention. It is a figure explaining the deviation | shift amount regarding the correction coefficient setting of embodiment of this invention. It is a figure explaining the difference for every support tool at the time of the correction coefficient setting of embodiment of this invention. It is a flowchart of the correction coefficient setting operation | movement of embodiment of this invention. It is a figure explaining the correction coefficient setting operation | movement at the time of input operation by the some indicator of embodiment of this invention. It is a flowchart of the correction coefficient setting operation | movement at the time of input operation by the some indicator of embodiment of this invention. It is a figure for demonstrating the example of the some correction coefficient setting area | region of embodiment of this invention. It is a flowchart for the coordinate correction | amendment at the time of the several correction coefficient setting area | region setting of embodiment of this invention.

Explanation of symbols

1L, 1R Sensor unit 2 Arithmetic / control unit 3 Coordinate input effective area 4 Retroreflective unit 5 Pen signal receiving unit 6, 6 ′ Indicator

Claims (4)

Coordinate input means and display means arranged in an overlapping manner, and instruction means for instructing an arbitrary position on the coordinate input means, and coordinate information of the position designated by the instruction means is inputted by the coordinate input means A display device with a coordinate input device for displaying image information corresponding to the input coordinate information on the display means,
Adding means for adding an identifier to the indicating means;
Calculation means for calculating a correction value for matching the indicated position and the display position of the image information corresponding to the position on the display means for each indication means identified by the identifier;
Storage means for storing the calculated correction value for each identifier added to the instruction means,
A display device with a coordinate input device, wherein the display position of image information on the display means is corrected for each identified instruction means based on the correction value stored for each identifier. A designation means for designating an area by the instruction means;
Setting means for setting a correction value for the designated area;
The display device with a coordinate input device according to claim 1, further comprising storage means for storing the set correction value in association with an identifier of the instruction means and the designated area. . Coordinate input means and display means arranged in an overlapping manner, and instruction means for instructing an arbitrary position on the coordinate input means, and coordinate information of the position designated by the instruction means is inputted by the coordinate input means A display method in a display device with a coordinate input device that causes the display means to display image information corresponding to the input coordinate information,
Adding an identifier to the indicating means;
Calculating a correction value for matching the indicated position and the display position of the image information corresponding to the position on the display means for each indication means identified by the identifier;
Storing the calculated correction value for each identifier added to the instruction means,
A display method comprising: correcting a display position of image information on the display unit for each identified instruction unit based on a correction value stored for each identifier.   A program for causing a computer to execute each step of the method according to claim 3.

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