JP6034672B2 - Drawing system - Google Patents

Description

  The present invention relates to a drawing system including a plurality of display devices having a drawing surface on which a diagram is displayed by a drawing process, and a drawing device that gives an instruction related to the drawing to any one of the display devices.

  In recent years, for example, in a touch panel device for information display installed in a public space, a pressure-sensitive sensor is mounted at the tip of a corresponding pen-type input device, and line width, line density, etc. of drawing are switched according to the pressure value. Thus, a drawing system capable of more intuitive drawing has been disclosed.

  For example, in Patent Document 1, when the line width change process is designated by comparing the pen pressure value detected by detecting the pen pressure value applied to the input pen and a plurality of threshold values, or the line density An image input device is disclosed that can change the line width or line density when the change process is specified, and can input an image in the same manner as in actual drawing.

JP-A-8-87372

  On the other hand, there may be a case where drawing is performed on a plurality of apparatus bodies using one input pen. As described above, when changing the output value such as the line width and the line density according to the detected writing pressure value, the LUT that associates the writing pressure value with the output value (a plurality of threshold values in Patent Document 1). I need something like this. However, since a plurality of apparatus main bodies do not necessarily have the same LUT, there is a possibility that a diagram with different attributes may be drawn for each apparatus main body.

  However, in the image input apparatus of Patent Document 1, since the input pen and the apparatus main body are connected by a cable, one input pen is specified for one apparatus main body, and thus such a problem cannot be solved.

  The present invention has been made in view of such circumstances, and an object of the present invention is to have a drawing device (input pen) store setting data related to drawing such as the LUT and the color of a diagram to be drawn. Even when the display device to be drawn changes by setting the display device according to the setting data stored in the drawing device, the same attribute (for example, line width, It is an object of the present invention to provide a drawing system capable of drawing a line drawing of drawing colors and the like.

A drawing system according to the present invention includes a plurality of display devices having a drawing surface on which a diagram is displayed by a drawing process, and a drawing device that gives instructions related to the drawing to a display device selected from the plurality of display devices The drawing device includes: a first storage unit that stores setting data related to the drawing; an acquisition unit that acquires identification data related to the reception unit of the selected display device; and the acquired identification data using, the selected display device, and a transmission unit configured to transmit the setting data, the display device, the reception unit receives the setting data, based on the setting data received, the drawing characterized in that it comprises a drawing hand stage to perform processing.

In the present invention, the first storage unit of the drawing device stores setting data related to the drawing, and the acquisition unit acquires identification data related to the receiving unit of the selected display device, and transmits the transmission data. The unit transmits the setting data to the selected display device using the acquired identification data . When the receiving unit of the selected display device receives the setting data, the drawing processing is performed based on the setting data received by the drawing unit of the selected display device.

In the drawing system according to the present invention, the drawing device includes determination means for determining whether or not the selected display device is changed to another display device, and the selected display device is changed to another display device. If it is determined that acquires identification data relating to the receiving unit of the other display devices which the acquisition unit has been changed, by using the identification data acquired, the transmitting unit has a display device has been changed, the When the setting data already stored in the first storage unit is transmitted and each display device receives the already stored setting data, each display device performs setting related to drawing based on the already stored setting data. The setting means to perform is provided.

  In the present invention, the determination unit of the drawing device determines whether or not the selected display device has been changed to another display device. For example, the selected display device has been changed to another display device. If determined, the acquisition means acquires identification data relating to a receiving unit of another display device that has been changed, and using the acquired identification data, the transmission unit transmits the identification data to the changed other display device. 1 Setting data already stored in the storage unit is transmitted. In another changed display device, when the already stored setting data is received, the setting means performs setting related to drawing based on the received already stored setting data.

  In the drawing system according to the present invention, each display device includes a radio field intensity measuring unit that measures radio field intensity related to data reception from the drawing unit, a second storage unit that stores a specific radio field intensity range in advance, A touch panel that detects a contact with the drawing surface and receives a position designation, and when receiving a plurality of position designations before the drawing process, the radio wave intensity is the highest among a plurality of locations corresponding to the plurality of position designations. And instructing means for instructing to adjust the radio field intensity so that the radio field intensity at a weak point is included in the radio field intensity range.

  In the present invention, before the drawing process, when the touch panel accepts a plurality of position designations, the radio field intensity measuring unit measures the radio field intensity, and the instruction means sets the plurality of position designations. The drawing unit is instructed to adjust the radio wave intensity so that the radio wave intensity at the weakest radio wave intensity is included in the radio wave intensity range.

  In the drawing system according to the present invention, in each display device, the drawing surface is rectangular, and the plurality of places include at least corners of the drawing surface.

  In the present invention, the plurality of locations include at least corners of the drawing surface, and the instruction means is configured to perform the instruction based on a measurement result of the radio wave intensity measurement unit at the plurality of locations. To do.

  In the drawing system according to the present invention, when each display device receives a position designation within a predetermined range from the location where the radio field intensity is weakest during the drawing process, the radio field intensity measurement unit performs the position designation. The radio wave intensity is measured at a corresponding location, and the instruction means performs the instruction based on the measurement result.

  In the present invention, during the drawing process, when the touch panel accepts a position designation at a location within a predetermined range from the location where the radio field strength is weakest, the radio field strength measurement unit performs the location designation. The radio field intensity is measured at the corresponding location, and the instruction means instructs the drawing device based on the measurement result.

  In the drawing system according to the present invention, the drawing device includes an adjusting unit that adjusts the radio wave intensity, and the increase width when the adjusting unit increases the radio wave intensity is larger than the decrease band when the radio wave intensity is decreased. It is characterized by being.

  In the present invention, the adjustment means increases the radio wave intensity when increasing the radio field intensity to be greater than the decrease range when decreasing the radio wave intensity, and adjusts the radio wave intensity according to an instruction from the instruction means of the display device. adjust.

In the drawing system according to the present invention, each display device detects a touch on the drawing surface and receives a position designation, and a display unit that displays a figure representing a position where the position designation should be received on the drawing surface. And position designation determination means for determining whether or not a position designation has been made at a location related to the figure, and based on the determination result of the position designation determination means, the acquisition means of the drawing device is connected to the reception unit of the own apparatus. And an identification data transmitting unit that transmits the identification data.

In the present invention, when the display means displays the graphic on the drawing surface, and when the position designation determination means determines that there is a position designation at a location related to the graphic, The identification data transmission unit transmits identification data related to the reception unit of the own device to the acquisition unit of the drawing device related to the position designation.

  In the drawing system according to the present invention, when each display device determines that a position has been specified by the position specification determination unit, the display unit further displays the figure at another location, and the position specification determination unit The identification data transmitting unit is configured to perform the transmission when the determination is performed again and it is determined again that the position has been designated.

  In the present invention, when the display means displays the figure on the drawing surface, and the position designation determination means determines that the position is specified at a location related to the figure, the display means The graphic is further displayed at another location, and when the position designation determining means determines again that the location designation at the other location has been made, the identification data transmission unit performs the transmission.

  According to the present invention, since the display device performs setting in accordance with setting data stored in the drawing device, even when the display device to be drawn changes, the same attribute (for example, line Width, drawing color, etc.) can be drawn.

It is the conceptual diagram which displayed notionally the drawing system which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the principal part structure of the pen-type input device which concerns on Embodiment 1 of this invention. 6 is an exemplary diagram illustrating an example of a pen pressure conversion table in a storage unit in the pen-type input device according to Embodiment 1. FIG. It is an illustration figure which shows an example of the format of the transmission data transmitted to an electronic whiteboard in the pen-type input device which concerns on Embodiment 1 of this invention. It is an illustration figure which shows the other example of the format of the transmission data transmitted to an electronic whiteboard in the pen-type input device which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the principal part structure of the electronic whiteboard which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the principal part structure of the control part in the touchscreen part of the electronic whiteboard which concerns on Embodiment 1 of this invention. In Embodiment 1 of this invention, when using a pen type input device as a mouse | mouth, it is an illustration figure which shows an example of the format of the transmission data transmitted to an electronic whiteboard from a pen type input device. In Embodiment 1 of this invention, when using a pen type input device as a digitizer, it is an illustration figure which shows an example of the format of the transmission data transmitted to an electronic whiteboard from a pen type input device. In Embodiment 1 of this invention, it is explanatory drawing explaining the adjustment of the electromagnetic wave strength performed by the adjustment instruction | indication part. In Embodiment 1 of this invention, it is explanatory drawing explaining the process in which the user determines the apparatus used as the object which gives a drawing instruction | indication. It is a functional block diagram explaining the process of the light scanning in the touchscreen part of the electronic whiteboard which concerns on Embodiment 1 of this invention. It is explanatory drawing explaining the detection of the scanning and the contact position with a light-shielding object in the electronic whiteboard of Embodiment 1 of this invention. 5 is a flowchart illustrating a drawing instruction that the pen-type input device performs on the electronic whiteboard in Embodiment 1 of the present invention. It is explanatory drawing explaining use of the pen-type input device in the drawing system which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the principal part structure of the pen-type input device which concerns on Embodiment 2 of this invention. It is a functional block diagram which shows the principal part structure of the electronic whiteboard which concerns on Embodiment 2 of this invention.

  Hereinafter, in the drawing system according to the embodiment of the present invention, the drawing device and the display device are applied to a pen-type input device and a touch panel device including the pen-type input device, respectively, as an example in the drawings. Based on the details. As a touch panel device, a so-called electronic whiteboard will be described as an example.

(Embodiment 1)
FIG. 1 is a conceptual diagram conceptually showing a drawing system according to Embodiment 1 of the present invention. The drawing system according to Embodiment 1 of the present invention includes a plurality of electronic whiteboards 100 and 300 and a pen-type input device 200. In the drawing system according to the present invention, drawing processing is performed on the electronic whiteboards 100 and 300 in accordance with an instruction related to drawing from the pen-type input device 200 (hereinafter referred to as a drawing instruction). Further, the pen-type input device 200 is configured to draw a diagram having the same attribute on both the electronic whiteboard 100 and the electronic whiteboard 300.

  The configurations of the electronic whiteboard 100 and the electronic whiteboard 300 are the same, and only the configurations of the electronic whiteboard 100 and the pen-type input device 200 will be described below.

  The electronic whiteboard 100 detects the position of the pen-type input device 200 by a display unit 100A having a drawing surface 101 on which a diagram is displayed by a drawing process and a method to be described later, and performs predetermined processing on the drawing surface 101. A touch panel unit 100B that receives a position designation of the position.

  The touch panel unit 100B according to the first embodiment of the present invention is a so-called infrared shielding touch panel that includes a light emitting element that emits infrared light and a light receiving element that receives infrared light, and detects the position of the light shielding object.

  FIG. 2 is a functional block diagram showing the main configuration of the pen-type input device 200 according to Embodiment 1 of the present invention. The pen-type input device 200 is configured to be communicable with the touch panel unit 100B, and transmits setting data and input device information, which will be described later, to the touch panel unit 100B.

  In addition, the pen-type input device 200 includes a contact portion 201 that comes into contact with the drawing surface 101 of the display portion 100A and a pen-type casing 202 that accommodates each portion related to generation of the input device information. It has. The contact portion 201 has a columnar shape and is held by the casing 202 so that the contact portion 201 can move along the axial direction (or longitudinal direction) of the casing 202.

  The pen-type input device 200 further includes a writing pressure detection unit 210, a control unit 220, a storage unit 230, a posture detection unit 240, and a communication unit 250, which are accommodated in the casing 202. Yes.

  The writing pressure detection unit 210 measures the contact pressure due to the contact between the tip of the contact unit 201 and the drawing surface 101 when the user holds the pen-type input device 200 and draws on the drawing surface 101 of the display unit 100A. To do. In other words, during the contact, the pressure applied to the contact portion 201 (hereinafter referred to as writing pressure) is measured. For example, the writing pressure detection unit 210 detects the writing pressure using a so-called distortion sensor, and the thickness of a line to be drawn is changed by the writing pressure.

  The posture detection unit 240 has a so-called tilt sensor or a triaxial acceleration sensor, and detects the posture of the own device (pen-type input device 200). More specifically, the posture detection unit 240 detects the inclination of the axis of the pen-type input device 200 with respect to the vertical axis, that is, the axis in the direction of gravity, or whether or not the own device is moving.

  The storage unit 230 includes, for example, a non-volatile storage medium such as a flash memory, an EEPROM (registered trademark), an HDD, an MRAM (magnetic resistance memory), an FeRAM (ferroelectric memory), or an OUM. The storage unit 230 also includes a pen pressure conversion table used when correcting the detection result by the pen pressure detection unit 210 in the LUT process, an identification ID of the pen-type input device 200 (for example, MAC (Media Access Control)). ) Address) etc. are stored.

  FIG. 3 is an exemplary diagram showing an example of a writing pressure conversion table in the storage unit 230 in the pen-type input device 200 according to the first embodiment. In the first embodiment, in order to reduce the amount of data transmission, (0, 0), (PI (0), PO (0)), (PI (1), PO (1)), (PI (2), PO (2)), (4095, PO (3)) is specified for correction by 5-point interpolation (input value is 12 bits).

  The control unit 220 acquires the detection result detected by the posture detection unit 240 or the writing pressure detection unit 210 and transmits the detection result to the electronic whiteboards 100 and 300 via the communication unit 250. The control unit 220 includes a determination unit 221, an acquisition unit 222, and an adjustment unit 223.

  The determination unit 221 determines whether or not a device (selected display device) to which a drawing instruction is given has been changed. In the first embodiment, since the pen-type input device 200 gives a drawing instruction to the electronic whiteboard 100 or the electronic whiteboard 300, has the target to be drawn changed from the electronic whiteboard 100 to the electronic whiteboard 300? Whether the electronic whiteboard 300 is changed to the electronic whiteboard 100 is determined.

  When the drawing instruction is given to any of the electronic whiteboards, the identification ID of the electronic whiteboard side (hereinafter referred to as the receiving side) for which communication is currently established is stored in the storage unit 230. Therefore, the determination unit 221 performs the determination based on whether or not the responding reception side identification ID matches the reception side identification ID already stored in the storage unit 230.

  As described above, when the determination unit 221 determines that the device to which the drawing instruction is to be applied has been changed, the acquisition unit 222 identifies the receiving side after the change by a response from the receiving side. Get an ID. Also, the acquisition unit 222 changes the reception-side identification ID already stored in the storage unit 230 to the changed reception-side identification ID.

  In addition, the present invention is not limited to this. From the electronic whiteboard to be changed by appropriately performing the operation at the timing when the user changes the electronic whiteboard to be drawn using the pen-type input device 200. You may comprise so that identification ID of an own device may be transmitted to the pen-type input device 200. FIG. Specifically, when a list of pen-type input devices that can be handled by the user is displayed on the electronic whiteboard to be changed by the user's operation and the user selects any pen-type input device, the list should be changed. The electronic whiteboard transmits its own identification ID to the selected pen-type input device.

  The adjustment unit 223 adjusts the radio wave intensity in communication between the communication unit 250 and the electronic whiteboard 100 in accordance with an instruction from the adjustment instruction unit 18 of the electronic whiteboard 100 described later.

  The communication unit 250 transmits the setting data and input device information to, for example, the communication unit 5 described later of the electronic whiteboard 100 in accordance with an instruction from the control unit 220. The communication unit 250 is configured to perform wireless communication such as Bluetooth (trademark registration) and ZigBee (trademark registration).

  Here, the setting data includes the pen pressure conversion table used for correcting the detection result detected by the posture detection unit 240 or the pen pressure detection unit 210, and the set value of the color of the diagram to be drawn by such a drawing instruction. Etc.

  The input device information includes a detection result (writing pressure information) detected by the writing pressure detection unit 210, a detection result (motion information) detected by the posture detection unit 240, and a tact switch attached to the pen-type input device 200. Switch ON / OFF information from (not shown).

  FIG. 4 is an exemplary diagram showing an example of a format of transmission data to be transmitted to the electronic whiteboard 100 in the pen-type input device 200 according to the first embodiment of the present invention, and FIG. 5 is a diagram illustrating the first embodiment of the present invention. 6 is an exemplary diagram illustrating another example of a format of transmission data to be transmitted to the electronic whiteboard 100 in the pen-type input device 200 according to the embodiment. FIG. 4 and 5, for convenience of explanation, a case where a MAC address is used as the identification ID on the receiving side is taken as an example.

  As shown in FIG. 4, in the transmission data 1 to 3, a transmission side MAC address is assigned to the extended part, and the basic part has the MAC address (transmission side MAC address) and the setting data or input unit information. Is assigned.

  Further, the present invention is not limited to this, and as shown in FIG. 5, in the transmission data 1A to 3A, an ID (reception side communication unit ID) of the communication unit 5 of the electronic whiteboard 100 is further added to the basic part. You may do it. Thereby, the electronic whiteboard 100 can enable communication only when the ID of the communication unit 5 matches the reception side communication unit ID of the transmission data 1A to 3A.

  FIG. 6 is a functional block diagram showing a main configuration of the electronic whiteboard 100 according to Embodiment 1 of the present invention.

  The display unit 100A includes a drawing surface 101 (drawing surface) such as an LCD or an EL (Electroluminescence) panel, and characters and lines are transmitted based on the setting data and input device information transmitted from the pen-type input device 200. The figure is displayed on the drawing surface 101.

  The touch panel unit 100 </ b> B includes a control unit 1, a ROM 2, a RAM 3, a communication unit 5, a radio wave intensity measurement unit 6, a storage unit 7, and a scanning unit 9, and the touch panel unit 100 </ b> B is a pen via the communication unit 5. The setting data and input device information are received from the mold input device 200.

  The control unit 1 of the touch panel unit 100 </ b> B instructs the display unit 100 </ b> A to draw characters, diagrams, and the like based on the coordinates related to the scanning result by the scanning unit 9. Characters, lines, etc. are displayed on the drawing surface 101 according to the setting data.

  A control program is stored in the ROM 2 in advance, and the RAM 3 temporarily stores data and can be read out regardless of the storage order, storage position, or the like. The RAM 3 stores, for example, a program read from the ROM 2 and various data generated by executing the program.

  The control unit 1 loads the control program stored in advance in the ROM 2 onto the RAM 3 and executes it, thereby controlling the various hardware described above via the bus and causing the touch panel unit 100B to function.

  The communication unit 5 receives the setting data, input device information, and the like from the pen-type input device 200. Corresponding to the communication unit 250 of the pen-type input device 200, the communication unit 5 is configured to perform wireless communication such as Bluetooth (registered trademark) and ZigBee (registered trademark).

  The radio wave intensity measurement unit 6 measures the radio wave intensity in communication between the pen-type input device 200 and the communication unit 5. For example, when the communication unit 5 receives the setting data from the pen-type input device 200, the radio wave intensity measurement unit 6 performs radio wave intensity measurement. The measurement result obtained by the radio wave intensity measuring unit 6 is obtained as an RSSI (Received Signal Strength Indication or Received Signal Strength Indicator) value.

  The storage unit 7 is configured by a non-volatile storage medium such as a flash memory, EEPROM (registered trademark), HDD, MRAM (magnetoresistance memory), FeRAM (ferroelectric memory), or OUM, for example. The storage unit 7 receives and records the setting data, and stores a minimum radio wave intensity range described later.

  FIG. 7 is a functional block diagram showing a main configuration of the control unit 1 in the touch panel unit 100B of the electronic whiteboard 100 according to Embodiment 1 of the present invention. The control unit 1 includes a CPU 11, a coordinate detection unit 12, a shading object management unit 13, an information integration unit 14, an information setting unit 15, a drawing unit 16, a setting reception unit 17, an adjustment instruction unit 18, A display control unit 19 and a position designation determination unit 20 are provided.

  The coordinate detection unit 12 detects the coordinates of a light shielding object (for example, the pen-type input device 200) on the drawing surface 101. Specifically, the coordinates of such a light shielding object are detected based on an intensity signal described later that is sent when the light blocking on the drawing surface 101 of the display unit 100A is detected by the touch panel unit 100B.

  The light shielding object management unit 13 manages the position (coordinates) of the light shielding object detected by the scanning of the scanning unit 9. For example, when the light shielding object moves, the light shielding object management unit 13 stores a coordinate history representing the movement trace of the light shielding object.

  The information integration unit 14 integrates the coordinates detected by the coordinate detection unit 12 with, for example, setting data, input device information, and the like received from the pen-type input device 200 via the communication unit 5, thereby drawing data related to drawing. Is generated.

  There are two types of output, mouse or digitizer. For example, the pen-type input device 200 can be used as a mouse or a digitizer by displaying two methods of a mouse and a digitizer on the drawing surface 101 and prompting the user to make a selection. The choices are displayed on the drawing surface 101 using, for example, a remote controller (not shown).

  FIG. 8 is an exemplary diagram showing an example of a format of transmission data transmitted from the pen-type input device 200 to the electronic whiteboard 100 when the pen-type input device 200 is used as a mouse in the first embodiment of the present invention.

  For example, when the pen-type input device 200 is provided with a mouse function, the coordinates (horizontal movement amount and vertical movement amount in FIG. 8) and click information (button1) in FIG. Information corresponding to .about.3: 1: click, 0: do not click). When the transmission data is transmitted to the control unit 1 of the electronic whiteboard 100, the control unit 1 draws on the drawing surface 101 with reference to the received format information using a drawing application.

  FIG. 9 is an exemplary diagram showing an example of a format of transmission data transmitted from the pen-type input device 200 to the electronic whiteboard 100 when the pen-type input device 200 is used as a digitizer in Embodiment 1 of the present invention.

  When the pen-type input device 200 has a digitizer function, in addition to the information corresponding to the mouse as shown in FIG. 8, the pen pressure value when touching (contacting) the drawing surface 101 (FIG. 9). Also has a 12-bit example).

  On the control unit 1 (drawing application) side of the electronic whiteboard 100, a writing pressure value is acquired, and, for example, a diagram to be drawn is changed according to the acquired writing pressure value. For example, the higher the writing pressure value, the thicker the width of the drawn diagram, and the lower the pressure value, the thinner. Further, the higher the writing pressure value, the darker the color of the drawn diagram, and the lower the pressure value, the thinner.

  For example, the information setting unit 15 associates the pen-type input device 200 such as the MAC address (identification ID) with the pen pressure conversion table and the color of the diagram to be drawn by such a drawing instruction. Set the set value of.

  More specifically, when the setting related to the setting data such as the writing pressure conversion table and the color of the diagram to be drawn is received from the user via the drawing surface 101, the information setting unit 15 displays the received setting data. Then, the data is transmitted to the pen-type input device 200 via the communication unit 5. The pen type input device 200 stores the received setting data in the storage unit 230 and updates the already stored setting data.

  In a specific case, the information setting unit 15 receives the setting data from the pen-type input device 200 via the communication unit 5 and converts the setting data already stored in the storage unit 7 into the received setting data. change.

  The drawing unit 16 uses the drawing data generated by the information integration unit 14 to generate an image to be displayed on the drawing surface 101, and outputs the generated image as an image signal to the drawing surface 101. Do.

  The setting receiving unit 17 receives settings from the user such as the setting data, that is, the writing pressure conversion table, the setting value of the color of the diagram to be drawn according to the drawing instruction. For example, the user appropriately operates a remote controller (not shown) to display a reception screen for receiving such a setting on the drawing surface 101, and the writing pressure conversion table and the drawing instruction are displayed via the reception screen. The setting of the color setting value of the diagram to be drawn is accepted.

  Based on the measurement result by the radio field intensity measurement unit 6, the adjustment instruction unit 18 is configured so that the pen-type input device 200 (communication unit 250), the communication unit 5, and the like are within the minimum radio field intensity range stored in the storage unit 7. The adjustment unit 223 of the pen-type input device 200 is instructed to adjust the radio wave intensity in the communication. The minimum radio wave intensity range is a radio wave intensity range determined by the user, and is, for example, a range of −80 dbm to −85 dbm.

  For example, before the drawing process is performed, when the coordinate detection unit 12 receives position designations at a plurality of locations on the drawing surface 101 and detects the coordinates of such locations, or when the communication unit 5 detects a pen-type input device. While receiving the setting data or input device information from 200, the radio field intensity measurement unit 6 performs radio field intensity measurement, and based on the measurement result, as described above, the adjustment instruction unit 18 adjusts the radio field intensity. The pen type input device 200 is instructed. Hereinafter, the adjustment of the radio field intensity performed by the adjustment instruction unit 18 in the first embodiment will be described in detail.

  FIG. 10 is an explanatory diagram for explaining the adjustment of the radio field intensity performed by the adjustment instruction unit 18 in the first embodiment of the present invention.

  At the timing when the pen-type input device 200 (communication unit 250) and the electronic whiteboard 100 (communication unit 5) are paired, the user calibrates the radio field intensity in the following procedure. As shown in FIG. 10, when the user selects calibration from the menu using a remote controller (not shown) in the order of P1 to P4, the CPU 11 issues an instruction to display the position for calibration, and the display control unit. 19 displays a position (indicated by “+” in FIG. 10) for calibration on the drawing surface 101.

  At this time, the user touches with the pen-type input device 200 in the order of P1 to P4. Since touching is performed in this order, the movement amount of the user can be reduced. In addition, since the calibration is performed at the four corner positions of the drawing surface 101, if there is no problem with the radio wave intensity here, it is considered that there is no problem with the radio wave condition at any location on the drawing surface 101. be able to.

  When the user touches the position indicated by “+” with the pen-type input device 200, the radio wave intensity measuring unit 6 measures the radio wave intensity and can acquire the radio wave intensity (RSSI value) at P1 to P4 at this time. .

  Subsequently, calibration is performed so that the portion with the lowest RSSI value (the portion with the weakest radio wave intensity) acquired in P1 to P4 is within the minimum radio wave intensity range. Based on the result, the adjustment instruction unit 18 instructs the pen-type input device 200 to adjust the radio field intensity.

The radio wave intensity is also adjusted while the drawing process is being performed. In the following, for convenience of explanation, it is assumed that the place where the RSSI value is the lowest is P4.
For example, when the pen-type input device 200 touches a place close to P4 (for example, within 20 cm around P4) where the RSSI value is the lowest even while the user is drawing, the radio wave intensity measurement unit 6 measures the radio field intensity and can acquire the radio field intensity at P4 at this time.

  When the radio field intensity measured at this time is higher than the minimum radio field intensity range, the adjustment instructing unit 18 instructs the pen type input device 200 to reduce the radio field intensity, and the adjustment unit of the pen type input device 200 223 lowers the radio field intensity so as to be within the minimum radio field intensity range. Such adjustment of the radio wave intensity is performed when data communication between the electronic whiteboard 100 and the pen-type input device 200 is not performed.

  If the measured radio field intensity is weaker than the minimum radio field intensity range, the adjustment instruction unit 18 instructs the pen input device 200 to improve the radio field intensity, and the adjustment unit 223 of the pen type input device 200. However, the radio field intensity is increased so as to be within the minimum radio field intensity range.

  It should be noted that the amount of increase when the adjustment unit 223 increases the radio field intensity is greater than the range of decrease when the radio field intensity is decreased. For example, the raised width is 10 dbm and the lowered width is 1 dbm. This is because if the radio field strength is increased, there is a risk that communication will not be possible at this time, and there is a need to restore it immediately. If the radio field strength is decreased, there is a risk that wireless communication cannot be performed if the signal strength is too low. It is because there is sex.

  On the other hand, as described above, the display control unit 19 displays “+” on the drawing surface 101 as a graphic representing a location where a position designation should be accepted. When “+” is displayed on the drawing surface 101, the user touches such a place with the pen-type input device 200.

  Based on the detection result by the coordinate detection unit 12, the position designation determination unit 20 determines whether or not the “+” position displayed on the drawing surface 101 by the display control unit 19 has been touched, in other words, such a position. It is determined whether or not the position is designated.

  In the drawing system according to the present invention, when the display control unit 19 displays a “+” figure on the drawing surface 101, the user touches the position with the pen-type input device 200, thereby touching the touched object. The electronic whiteboard 100 related to the drawing surface 101 can be determined as a device to which a drawing instruction is given. Hereinafter, a method for determining a device to which a drawing instruction is to be given will be described in detail.

  FIG. 11 is an explanatory diagram for explaining a process of determining a device to which a user gives a drawing instruction in Embodiment 1 of the present invention. In the following, it is assumed that the user determines the electronic whiteboard 100 as a device to which a drawing instruction is given.

  First, as shown in FIG. 11A, the display control unit 19 displays figures (P in FIG. 11) indicating P11 to P16 on the drawing surface 101.

  When the user determines the electronic whiteboard 100 as a device to which a drawing instruction is to be given, as shown in FIG. 11B, any one of P11 to P16 is touched using the pen-type input device 200 (FIG. 11B). In this example, the case where the user touches P14 is described as an example).

  At this time, the position designation determination unit 20 detects a touch (position designation) at the position related to P14. When a touch at a position related to P14 is detected, the display control unit 19 displays a graphic of “◯” again at another location around P14 (P141) as shown in FIG. 11C.

  As illustrated in FIG. 11C, when the user touches P141 again using the pen-type input device 200, the position designation determination unit 20 detects a touch (position designation) at the position according to P141. In this case, the CPU 11 transmits the MAC address of its own device (communication unit 5) to the pen-type input device 200 via the communication unit 5. As a result, the pen-type input device 200 and the electronic whiteboard 100 can communicate.

  That is, normally, it can communicate only with an electronic whiteboard having the same MAC as the MAC address (identification ID) for specifying the electronic whiteboard, which is stored in the storage unit 230 of the pen-type input device 200. When a device to which a drawing instruction is to be given is determined by touching, the device to which the drawing instruction is given to the electronic whiteboard 100 related to the touch regardless of the MAC address stored in the storage unit 230. And Note that the system can be further enhanced by repeating FIGS. 11C and 11D.

  On the other hand, the CPU 11 controls the light emitting element and the light receiving element of the scanning unit 9.

  The touch panel unit 100B is an infrared shielding touch panel as described above. That is, when the front end of the pen-type input device 200 touches the drawing surface 101 of the display unit 100A, the position of the light shielding object (pen-type input device 200) is detected by detecting light blocking. That is, as a result of scanning, a signal (intensity signal) obtained from the light receiving element is sent to the control unit 1, and based on this, the coordinate detection unit 12 detects the coordinates of the light shielding object. In this way, the touch panel unit 100B receives input of position designation, characters, line drawings, and the like on the display unit 100A (the drawing surface 101) from the user.

  The touch panel unit 100B includes a scanning unit 9 that scans infrared light (hereinafter referred to as infrared light) along the drawing surface 101 of the display unit 100A, and the scanning unit 9 emits infrared light. A light emitting unit 91 having a plurality of light emitting elements, a light receiving unit 92 having a plurality of light receiving elements for receiving infrared light from the corresponding light emitting elements, and a light emission signal and a light reception signal from the control unit 1 (CPU 11), respectively. It further includes an address decoder 93 assigned to the light emitting unit 91 and the light receiving unit 92, and an A / D converter 94 for converting an analog signal from the light receiving unit 92 used for detecting light blockage into a digital signal.

  FIG. 12 is a functional block diagram illustrating light scanning processing in the touch panel unit 100B of the electronic whiteboard 100 according to Embodiment 1 of the present invention.

  The light emitting unit 91 has a multiplexer (not shown), and each of the light emitting elements is connected to the multiplexer. The light receiving unit 92 also includes a multiplexer (not shown), and each of the light receiving elements is connected to the multiplexer. Further, each light emitting element of the light emitting unit 91 is configured to correspond (oppose) to any one light receiving element of the light receiving unit 92.

  The CPU 11 of the control unit 1 outputs a light emission signal for causing the plurality of light emitting elements to emit light to the address decoder 93A, and outputs a light reception signal for causing the plurality of light receiving elements to receive light to the address decoder 93B. The address decoder 93A outputs, to the light emitting unit 91, a signal for specifying any one of the light emitting elements related to light emission in response to the signal from the CPU 11, and the address decoder 93B responds to the signal from the CPU 11. Then, a signal for specifying the light receiving element corresponding to the specified light emitting element among the light receiving elements is output to the light receiving unit 92.

  The light emitting element thus identified emits infrared light, and the corresponding light receiving element receives infrared light. At this time, an intensity signal indicating the intensity of the infrared light received by the light receiving element as a voltage value is output to the A / D converter 94. The A / D converter 94 converts the intensity signal into an 8-bit digital signal, for example, and outputs the converted intensity signal to the control unit 1. The control unit 1 sequentially repeats the process of acquiring the intensity signal from each light receiving element in order to acquire the intensity signal from all the light receiving elements.

  The CPU 11 of the control unit 1 calculates the amount of light received by the light receiving element based on the intensity signal acquired from each light receiving element. When the calculated amount of received light exceeds a predetermined threshold, the CPU 11 determines that the optical path of the infrared light received by the light receiving element is not blocked. When the calculated amount of received light is equal to or less than a predetermined threshold, it is determined that the optical path of infrared light received by the light receiving element is blocked.

  Based on the determination result of the CPU 11, the coordinate detection unit 12 detects the position of contact between the pen-type input device 200 and the drawing surface 101. That is, the coordinate detection unit 12 identifies a light receiving element in which the optical path of infrared light is blocked, and based on the position of the identified light receiving element, the pen-type input device 200 on the drawing surface 101 of the display unit 100A. Processing for detecting the position of the tip, that is, the coordinates of contact is performed.

  Hereinafter, the scanning and detection of the contact position with the light shielding object will be described in detail. FIG. 13 is an explanatory diagram for explaining scanning and detection of a contact position with a light shielding object in the electronic whiteboard 100 according to Embodiment 1 of the present invention.

  The drawing surface 101 of the display unit 100A has a rectangular shape, and a plurality of light emitting elements 911, 911,... Are arranged in parallel along the edge of the display unit 100A on the right side and the lower side of the drawing surface 101 in the drawing. Has been. The light emitting element 911 is, for example, a light emitting diode (LED) that emits infrared light. In the drawing, the optical path of the infrared light emitted from each light emitting element 911 is indicated by a solid arrow.

  The plurality of light emitting elements 911, 911,... On the right side are provided such that the optical paths of the infrared light emitted from the respective light emitting elements 911 are parallel to each other along the drawing surface 101. 911, 911,... Are similarly provided.

  That is, the lower light emitting elements 911, 911,... In the left-right direction (x-axis direction) and the right light emitting elements 911, 911,. They are provided so as to be orthogonal to each other.

  In addition, light receiving elements 921, 921,... Are provided on the drawing surface 101 of the display unit 100A at positions facing the light emitting elements 911, 911,.

  That is, on the left side and the upper side of the drawing surface 101 of the display unit 100A, a plurality of light receiving elements 921, 921,. The light receiving element 921 is a light receiving diode that receives infrared light. The infrared light from the light emitting elements 911, 911,... Is received by the light receiving elements 921, 921,.

  As in the case of the light emitting elements, the upper light receiving elements 921, 921, ... and the left light receiving elements 921, 921, ... are provided so that the optical paths of the infrared light to be received are orthogonal to each other.

  The scanning unit 9 sequentially causes the light emitting elements 911 to emit light one by one from one end to the other end in the X-axis direction and from one end to the other end in the Y-axis direction on the drawing surface 101 of the display unit 100A. The contact position with the pen-type input device 200 on the drawing surface 101 of the part 100A is detected as described above.

  FIG. 14 is a flowchart for explaining a drawing instruction that the pen-type input device 200 gives to the electronic whiteboard 100 in the first embodiment of the present invention.

  When the tact switch attached to the pen-type input device 200 is turned on, the posture detection unit 240 detects the movement of the own device (pen-type input device 200), and based on the detection result of the posture detection unit 240, The controller 220 determines whether or not the movement of its own device has been detected (step S101).

  When it is determined that the movement of the own device has not been detected (step S101: NO), the control unit 220 repeats such determination until the movement of the own device is detected.

  Further, when the control unit 220 determines that the movement of its own device has been detected (step S101: YES), for example, the pen pressure conversion table, the set value of the color of the diagram to be drawn according to such a drawing instruction (hereinafter referred to as “the drawing pressure”) The setting data such as the color setting value is simply identified (step S102).

  More specifically, the control unit 220 transmits the writing pressure conversion table, color setting values, and the like that are already stored in the storage unit 230 to the electronic whiteboard 100 via the communication unit 250, and information on the electronic whiteboard 100. The setting unit 15 performs setting in the storage unit 7 based on the received writing pressure conversion table, color setting values, and the like so as to be the same as these.

  At this time, the control unit 220 initializes a motion count in the posture detection unit 240 (step S103).

  Next, the determination unit 221 determines whether or not a device to which a drawing instruction is to be given has been changed (step S104). Such determination by the determination unit 221 has already been described, and detailed description thereof is omitted here.

  When the determination unit 221 determines that the device to which the drawing instruction is to be applied has been changed (step S104: YES), for example, the device to which the drawing instruction is to be applied is changed from the electronic whiteboard 100 to the electronic whiteboard 300. In this case, the acquisition unit 222 acquires the MAC address (identification ID) of the communication unit of the electronic whiteboard 300 from the changed electronic whiteboard 300. The method for acquiring the identification ID by the acquisition unit 222 has already been described, and detailed description thereof will be omitted.

  Next, the control unit 220 uses the MAC address acquired by the acquisition unit 222 to identify the electronic whiteboard 300, the writing pressure conversion table, the color setting value, and the like (step S105). Such identification has already been described, and detailed description thereof will be omitted. Thereafter, the process returns to step S104.

  On the other hand, when the determination unit 221 determines that the device to which the drawing instruction is to be applied has not been changed (step S104: NO), the control unit 220 determines whether or not setting data has been received from the electronic whiteboard 100. (Step S106).

  That is, it is assumed that the user changes the writing pressure conversion table, the color setting value, and the like by appropriately operating the electronic whiteboard 100. In such a case, since the changed writing pressure conversion table and setting data such as color setting values are transmitted from the electronic whiteboard 100 to the pen-type input device 200, the control unit 220 monitors the communication unit 250. Then, it is determined whether or not the changed setting data is received.

  When the control unit 220 determines that the setting data has been received (step S106: YES), the information setting unit 15 stores the same so as to be the same as the received writing pressure conversion table, color setting value, and the like (setting data). The setting data stored in the unit 230 is updated (step S107). Thereafter, the process returns to step S104.

  On the other hand, when it is determined that the setting data is not received from the electronic whiteboard 100 (step S106: NO), the control unit 220 determines whether there is data (for example, input device information) to be transmitted to the electronic whiteboard 100. Determination is made (step S108).

  When it is determined that there is data to be transmitted to the electronic whiteboard 100 (step S108: YES), the control unit 220 transmits such data to the electronic whiteboard 100 via the communication unit 250 (step S109). Thereafter, the process returns to step S104.

  At this time, the electronic whiteboard 100 receives the data, performs drawing processing as appropriate, and displays a diagram on the drawing surface 101.

  Next, when the control unit 220 determines that there is no data to be transmitted to the electronic whiteboard 100 (step S108: NO), whether or not the movement of the own device has been detected based on the detection result of the posture detection unit 240. Is determined (step S110).

  When it is determined that the movement of its own device has been detected (step S110: YES), the control unit 220 initializes a motion count in the posture detection unit 240 (step S111). On the other hand, when it is determined that the movement of the own device has not been detected (step S110: NO), the control unit 220 increments the motion count in the posture detection unit 240 (step S112).

  Next, the controller 220 determines whether or not the motion count is greater than a predetermined threshold (step S113). If the control unit 220 determines that the motion count is greater than the predetermined threshold (step S113: YES), the process returns to step S101, and, for example, the pen-type input device 200 transitions to a sleep mode.

  In addition, when it is determined that the motion count is not greater than the predetermined threshold value (step S113: NO), the control unit 220 instructs the timing unit (not shown) to start timing. Next, the control unit 220 determines whether or not a predetermined time has elapsed from the start of timing based on the timing result of the timing unit (step S114).

  If the controller 220 determines that the predetermined time has elapsed (step S114: YES), the process returns to step S104.

  When it is determined that the predetermined time has not elapsed (step S114: NO), the control unit 220 monitors the tact switch to determine whether the switch is off (step S115).

  If the control unit 220 determines that the switch is not turned off (step S115: NO), the process returns to step S114. On the other hand, when the control unit 220 determines that the switch is off (step S115: YES), the process ends.

  As described above, in the case where the pen-type input device 200 is not provided with a tact switch, if it is determined in step S114 that the predetermined time has not elapsed, the process waits until the predetermined time has elapsed. When the use of the pen-type input device 200 is finished, the processes in step S104, step S106, step S108, and step S110 are NO, the motion count is incremented, and when the motion count becomes larger than the threshold value, standby is performed in the sleep mode (energy saving mode). .

  FIG. 15 is an explanatory diagram illustrating use of the pen-type input device 200 in the drawing system according to Embodiment 1 of the present invention.

  For example, it is assumed that the user is drawing on the electronic whiteboard 100 using the pen-type input device 200, and a red and thick line diagram is drawn on the electronic whiteboard 100. At this time, the pen pressure conversion table and color setting values on the pen-type input device 200 side and the pen pressure conversion table and color setting values on the electronic whiteboard 100 side are made identical.

  On the other hand, it is assumed that the device on which the drawing instruction is given is changed from the electronic whiteboard 100 to the electronic whiteboard 300 by drawing on the electronic whiteboard 300 in the middle. Even in such a case, as described in the flowchart of FIG. 14, the pen pressure conversion table and color setting values on the pen-type input device 200 side, the pen pressure conversion table and color setting values on the electronic whiteboard 300 side, and the like. Therefore, a red and thick line diagram is drawn on the electronic whiteboard 300.

  The configuration of the electronic whiteboard 100 in the first embodiment is not limited to the above description content. For example, the electronic whiteboard 100 includes a PC, and the PC includes an information setting unit 15, a drawing unit 16, a setting receiving unit 17, an adjustment instruction unit 18, a display control unit 19, and a position designation determination unit 20. You may comprise so that the function of this may be made.

  It should be noted that the coordinate detection unit 12, the shading object management unit 13, the information integration unit 14, the information setting unit 15, the drawing unit 16, the setting reception unit 17, the adjustment instruction unit 18, and the display control unit described above. 19 and the position designation determination unit 20 may be configured by hardware logic, or may be constructed in software by the CPU 11 executing a predetermined program.

  Further, the determination unit 221, the acquisition unit 222, and the adjustment unit 223 described above may be configured by hardware logic, or are configured in software by the control unit 220 executing a predetermined program. May be.

(Embodiment 2)
FIG. 16 is a functional block diagram showing a main part configuration of the pen-type input device 200 according to the second embodiment of the present invention, and FIG. 17 shows a main part configuration of the electronic whiteboard 100 according to the second embodiment of the present invention. It is a functional block diagram shown.

  The electronic whiteboard 100 and the pen-type input device 200 in the drawing system according to the second embodiment have substantially the same configuration as that of the first embodiment. However, the electronic whiteboard 100 further includes the proximity wireless communication unit 8, and the pen-type input device 200 further includes the proximity wireless communication unit 260.

  The close proximity wireless communication unit 8 and the close proximity wireless communication unit 260 use a wireless system capable of communicating only within a short distance of several centimeters to several tens of centimeters such as near field communication (NFC (Near Field Communication), TransferJet (registered trademark)).

  In the drawing system according to the second embodiment, the proximity wireless communication unit 8 and the proximity wireless communication unit 260 are used when determining a device to which a drawing instruction is to be given. For convenience of explanation, a case where the electronic whiteboard 100 is determined as an apparatus to which the pen-type input device 200 gives a drawing instruction will be described as an example.

  When the pen-type input device 200 and the electronic whiteboard 100 are within a predetermined distance and communication between the close proximity wireless communication unit 8 and the close proximity wireless communication unit 260 is possible, the close proximity wireless communication unit 8 5 is transmitted to the proximity wireless communication unit 260, and the pen-type input device 200 can acquire the MAC address of the receiving side (the communication unit 5 of the electronic whiteboard 100). As a result, the electronic whiteboard 100 is determined as a device to which the pen-type input device 200 gives a drawing instruction.

  The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

1 control unit 5 communication unit (reception unit, reception setting transmission unit, identification data transmission unit)
6 Radio field intensity measurement unit 7 Storage unit (first storage unit, second storage unit)
11 CPU
15 Information setting part (setting part)
16 Drawing part 17 Setting reception part (reception means)
18 Adjustment instruction section (instruction means)
19 Display control unit (display means)
20 Position designation determination unit 100, 300 Electronic whiteboard (display device)
100B Touch panel unit 101 Surface to be drawn 200 Pen-type input device (drawer)
210 writing pressure detection unit 220 control unit 221 determination unit 222 acquisition unit 223 adjustment unit 230 storage unit 240 posture detection unit 250 communication unit (transmission unit)

Claims (8)

In a drawing system including a plurality of display devices having a drawing surface on which a diagram is displayed by a drawing process, and a drawing device that gives instructions related to the drawing to a display device selected from the plurality of display devices,
The drawing device
A first storage unit for storing setting data relating to the drawing;
Obtaining means for obtaining identification data relating to the receiving unit of the selected display device;
A transmission unit that transmits the setting data to the selected display device using the acquired identification data ,
Each display device
The reception unit receives the setting data,
Based on the received configuration data, drawing system, characterized in that it comprises a drawing hand stage for processing the drawing. The drawing device
Determination means for determining whether or not the selected display device has been changed to another display device;
If the selected display device is determined to have been changed to another display device, it acquires identification data relating to the receiving unit of the other display devices which the acquisition unit has been changed,
Using the acquired identification data, the transmission unit transmits the setting data already stored in the first storage unit to another changed display device,
Each display device
2. The drawing system according to claim 1, further comprising a setting unit configured to perform a setting related to drawing based on the already stored setting data when the already stored setting data is received. Each display device
A radio wave intensity measuring unit for measuring radio wave intensity relating to data reception from the drawing device;
A second storage unit that stores a specific radio field intensity range in advance;
A touch panel that detects contact with the drawing surface and receives position designation;
When a plurality of position designations are received before the drawing process, the radio wave intensity is included in the radio wave intensity range so that the radio wave intensity at the weakest radio wave intensity is included in the radio wave intensity range among the plurality of positions corresponding to the plurality of position designations. 2. The drawing system according to claim 1, further comprising instruction means for instructing to adjust the intensity. Each display device
The drawing surface is rectangular;
The drawing system according to claim 3 , wherein the plurality of places include at least corners of the drawing surface. Each display device
During the drawing process, when the position designation within the predetermined range is received from the location where the radio field intensity is weakest, the radio field intensity measurement unit measures the radio field intensity at the location corresponding to the position designation, drawing system according to claim 3 or 4, characterized in that based on the results of the measurement, the indication means are configured to perform the instructions. The drawing device
It has adjustment means to adjust the radio field intensity,
The drawing system according to any one of claims 3 to 5 , wherein an increase width when the adjustment means increases the radio field intensity is larger than a decrease width when the radio field intensity is decreased. Each display device
A touch panel that detects contact with the drawing surface and receives position designation;
Display means for displaying on the drawing surface a graphic representing a location where position designation is to be accepted;
Position designation determination means for determining whether or not there has been a position designation at a location related to the figure;
The identification data transmitting unit that transmits the identification data related to the receiving unit of the own apparatus to the obtaining unit of the drawing device based on a determination result of the position designation determining unit. Drawing system. Each display device
When it is determined by the position specification determination means that the position has been specified, the display means further displays the graphic at another location, and the position specification determination means performs the determination again. The drawing system according to claim 7 , wherein when the determination is made, the identification data transmission unit performs the transmission.

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