Display device and program

Abstract

To enable data to be displayed even after the lapse of a predetermined time, through an operation of a user after the data is input, in a mode in which display of the data input by the user is deleted after the predetermined time passes.SOLUTION: A display device includes: an operation receiving unit which receives an input of data to be displayed from a user; a determination unit which determines whether an operation of the user has been executed or not, the operation for modifying write mode from a temporary write mode to delete display of the data after a predetermined time to a stationary write mode which does not delete the display of the data; and a display control unit which switches display mode of the data, when the determination unit determines that the operation for modifying the write mode has been executed, from displaying the data in the temporary write mode to displaying the data in the stationary write mode.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a display device and a program. [Background technology]

[0002] There are known display devices such as electronic whiteboards on which a user writes strokes using an input means such as a dedicated electronic pen or their hand on a touch panel display, and handwritten data formed by several strokes is displayed. For example, Patent Document 1 discloses a technology in which a user writes using a writing medium that disappears after a certain period of time, and the image obtained by capturing the content with a camera is drawn on the display device. Summary of the Invention [Problem to be solved by the invention]

[0003] However, in conventional technology, in a mode in which the display of data entered by a user is erased after a certain period of time has elapsed, in order for the data to be displayed after the certain period of time has elapsed, it was necessary for the user to switch modes before entering data.

[0004] In view of the above-mentioned problems, an embodiment of the present invention aims to enable the display of data even after a certain period of time has passed after the data has been input, by user operation, in a mode in which the display of data entered by the user is erased after a certain period of time has passed. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, the present invention provides a display device including: an operation receiving unit that receives input of data to be displayed by a user; From the input of the above data Temporary write mode that erases the display of the data after a certain period of time has elapsed For the data entered in a determination unit that determines whether or not the user has performed an operation to change the write mode to a write-fixed mode that does not erase the display of the data; a display control unit that automatically displays a write confirmation button for changing the write mode, wherein the determination unit determines whether to change the write mode based on whether pressing of the write confirmation button has been accepted within a predetermined time after the data has been input, and the display control unitWhen the determination unit determines that an operation to change the write mode has been performed, the display of the data is switched from the display in the temporary write mode to the display in the fixed write mode. Ruko It is characterized by the following. [Effects of the Invention]

[0006] According to an embodiment of the present invention, in a mode in which the display of data entered by a user is erased after a certain period of time has elapsed, the data can be displayed even after a certain period of time has elapsed after the data has been entered, by operating the user. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an example of a schematic diagram of a display system according to an embodiment of the present invention. [Figure 2] FIG. 1 is a diagram illustrating an example of a hardware configuration of a display device according to an embodiment of the present invention. [Figure 3] FIG. 1 is a diagram showing an example of a configuration diagram of functional blocks of a display device according to an embodiment of the present invention. [Figure 4] FIG. 10 is a diagram illustrating an example of a write confirmation button according to an embodiment of the present invention. [Figure 5] FIG. 10 is a diagram illustrating an example of a sequence relating to a display process of a write confirmation button according to an embodiment of the present invention. [Figure 6] FIG. 10 is a diagram illustrating an example of a display screen in a display process of a write confirmation button according to an embodiment of the present invention. [Figure 7] FIG. 10 is a diagram showing an example of a sequence relating to a second display process of the write confirmation button according to the embodiment of the present invention. [Figure 8] FIG. 10 is a diagram showing an example of a display screen in a second display process of the write confirmation button according to the embodiment of the present invention. [Figure 9] FIG. 10 is a diagram showing an example of a sequence relating to a data display process in an asynchronous write mode according to an embodiment of the present invention. [Figure 10]FIG. 10 is a diagram showing an example of a sequence relating to a data display process in a synchronized write mode according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of a display device and a program according to the present invention will be described in detail with reference to the accompanying drawings.

[0009] [First embodiment] <System Overview> FIG. 1 is a diagram illustrating an example of a schematic diagram of a display system according to an embodiment of the present invention. The display system 1 includes display devices 2 (2a, 2b) connected to a communication network 4 such as the Internet, and a server device 3. The display device 2 is a system for conducting a remote conference or the like between the display devices 2a and 2b. Conference materials and the like can be displayed on the display device 2, and a user can draw by hand on the display device 2 using an input device such as an electronic pen or their hand. A stroke is a series of actions in which a user presses an input device such as an electronic pen or their hand against the display, moves it continuously, and then lifts it from the display device. A stroke is information displayed on the display device based on a trajectory of coordinates input by the input device. Handwritten data (or written or drawn) by a user, which includes one or more strokes, is called handwritten data. The handwritten data entered by the user on the display device 2a is transmitted to the server device 3 via the communication network 4. The server device 3 transmits the received handwritten data to the display device 2b, which then displays the received handwritten data on its display, allowing the handwritten data to be simultaneously viewed between locations of the remote conference. Furthermore, there are two writing modes in which a user can input data to the display: temporary writing mode and fixed writing mode. In temporary writing mode (which may also be called marker mode), the written data disappears after a predetermined period of time has elapsed, and the written data is not saved. On the other hand, in fixed writing mode (which may also be called pen mode or fixed writing mode), the written data is saved without disappearing from the display. Here, writing data that disappears after a certain period of time, such as that written in temporary writing mode, is called temporary writing data, and writing data that does not disappear even after a certain period of time, such as that written in fixed writing mode, is called fixed writing data. However, fixed writing mode and fixed writing data are not necessarily saved at the end of the conference, and mean that the display is not erased after a certain period of time has elapsed. Therefore, "fixed writing" may also be called "fixed writing," "fixed writing display," "long-term writing display," etc.The write mode may be synchronized so that the same write mode is used among a plurality of display devices 2 connected to the communication network 4 in the display system 1, or may be asynchronous (not synchronized).

[0010] In an embodiment of the present invention, the display device 2 can display writing data entered by a user in temporary writing mode even after a certain period of time has elapsed. To this end, for example, when a user enters writing data, the display device 2 displays a writing confirmation button near the writing data for a predetermined certain period of time. Furthermore, when the display device 2 detects that the user has pressed the writing confirmation button, it converts the writing data from temporary writing data to confirmed writing data, thereby preventing the display from being erased even after a certain period of time has elapsed.

[0011] Note that the system configuration of the display system 1 shown in Fig. 1 is one example. In Fig. 1, the display system 1 includes two display devices 2, but the display system 1 may include any number of display devices 2 (including one). Alternatively, the server device 3 may not exist, and multiple display devices 2 may communicate directly, or a single display device 2 may exist independently. Furthermore, the communication network 4 may include a connection section via wireless communication such as mobile communication or wireless LAN.

[0012] <Hardware configuration example> Fig. 2 is a diagram showing an example of a hardware configuration of a display device 2 according to an embodiment of the present invention. As shown in Fig. 2, the display device 2 includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, an SSD (Solid State Drive) 204, a network I / F 205, and an external device connection I / F (Interface) 206.

[0013] Of these, the CPU 201 controls the overall operation of the display device 2. The ROM 202 stores programs used to drive the CPU 201, such as the CPU 201 and an IPL (Initial Program Loader). The RAM 203 is used as a work area for the CPU 201. The SSD 204 stores various data, such as programs for the display device. The network controller 205 controls communication with the communication network 4. The external device connection I / F 206 is an interface for connecting various external devices. In this case, the external devices are, for example, a USB (Universal Serial Bus) memory 230 and external devices (a mouse 220, a microphone 240, a speaker 250, and a camera 260).

[0014] The display device 2 also includes a capture device 211, a GPU 212, a display controller 213, a contact sensor 214, a sensor controller 215, an electronic pen controller 216, a short-range communication circuit 219, an antenna 219a of the short-range communication circuit 219, a power switch 222, and selection switches 223.

[0015] Of these, the capture device 211 displays video information as still images or moving images on the display of an external PC (Personal Computer) 270. The GPU (Graphics Processing Unit) 212 is a semiconductor chip that specializes in graphics. The display controller 213 controls and manages screen display to output an image output from the GPU 212 to a display 280 or the like. The contact sensor 214 detects contact of the electronic pen 290, the user's hand H, or the like on the display 280. The sensor controller 215 controls the processing of the contact sensor 214. The contact sensor 214 inputs and detects coordinates using an infrared blocking method. This coordinate input and coordinate detection method involves two light receiving and emitting devices installed at both ends of the upper side of the display 280 emitting multiple infrared rays parallel to the display 280, which are reflected by reflecting members installed around the periphery of the display 280 and return along the same optical path as the light emitted by the light receiving element. The contact sensor 214 outputs the ID of the infrared light emitted by the two light receiving and emitting devices that has been blocked by an object to the sensor controller 215, and the sensor controller 215 identifies the coordinate position of the contact position of the object. The electronic pen controller 216 determines whether the pen tip or the pen tail has touched the display 280 by communicating with the electronic pen 290. The short-range communication circuit 219 is a communication circuit such as NFC (Near Field Communication) or Bluetooth (registered trademark). The power switch 222 is a switch for switching the power of the display device 2 on and off. The selection switches 223 are a group of switches for adjusting, for example, the brightness and color of the display 280.

[0016] The display device 2 further includes a bus line 210. The bus line 210 is an address bus, a data bus, or the like for electrically connecting the components such as the CPU 201 shown in FIG.

[0017] The contact sensor 214 is not limited to an infrared blocking type, and various detection means may be used, such as a capacitive touch panel that identifies the contact position by detecting a change in capacitance, a resistive film touch panel that identifies the contact position by a change in voltage between two opposing resistive films, or an electromagnetic induction touch panel that identifies the contact position by detecting electromagnetic induction caused by a contacting object coming into contact with the display unit. Also, the electronic pen controller 216 may determine whether or not the part of the electronic pen 290 that the user grips or other parts of the electronic pen have been touched, in addition to the pen tip and pen butt.

[0018] <About the function> 3 is a diagram showing an example of a functional block configuration diagram of a display device 2 according to an embodiment of the present invention. The display device 2 has an operation reception unit 10, a display control unit 11, a determination unit 12, a communication unit 13, and a control unit 14. Each of these units is a function or means realized by a CPU 201 executing instructions included in one or more programs installed in the display device 2.

[0019] The operation receiving unit 10 receives operations such as character input and button presses by the user via a contact sensor 214 that detects contact of the electronic pen 290, the user's hand H, or the like on the display 280 of the display device 2.

[0020] The display control unit 11 displays, on the display 280 of the display device 2, the write data input by the user, or a write confirmation button for switching the write data from temporary write data to confirmed write data, or the like.

[0021] The determination unit 12 determines whether a user operation (e.g., pressing a write confirmation button) has been performed to switch the write data from temporary write data to confirmed write data. The determination unit 12 also determines whether to display a write confirmation button based on the current write mode and the status of the user's input of write data. For example, the determination unit 12 determines that the write confirmation button should be displayed when the write mode is the temporary write mode and the user first inputs write data, and requests the display control unit 11 to display the write confirmation button. The determination unit 12 also determines whether to erase the display of the write data and the write confirmation button when N seconds (a predetermined period of time) have passed since the user last inputted the write data without inputting write data or pressing the write confirmation button.

[0022] The communication unit 13 is a communication function that the display device 2 has, and transmits and receives information to and from other server devices 3 or display devices 2 via the communication network 4.

[0023] The control unit 14 controls the switching of the write mode. For example, when the write confirmation button is pressed, the control unit 14 switches the write mode from the temporary write mode to the confirmed write mode.

[0024] <Write confirmation button> 4 is a diagram showing an example of a write confirmation button according to an embodiment of the present invention. In a display area 122 of a display screen 100 displayed on the display device 2 shown in FIG. 4, write data 101 to 104, write data areas 105 and 106, and write confirmation buttons 107 to 109 are displayed.

[0025] The handwritten data 101 to 104 are handwritten data that the user inputs by hand onto the display of the display device 2 using input means such as an electronic pen or a hand.

[0026] The writing data areas 105 and 106 are rectangular areas with the smallest area, containing the grouped writing data, in which writing data within a predetermined distance is grouped into one writing data, and whose sides are parallel to the sides of the display area 122. In Fig. 4, the writing data areas 105 and 106 correspond to the grouped writing data 101 and 102, and the grouped writing data 103 and 104, respectively.

[0027] The write confirmation buttons 107 to 109 are buttons used to enable the writing data entered by the user in temporary writing mode to be displayed even after a certain period of time has elapsed. A write confirmation button can be displayed for each piece of writing data (i.e., multiple write confirmation buttons can be displayed). Alternatively, a single write confirmation button can be displayed corresponding to all writing data in the display area 122, or a single write confirmation button can be displayed corresponding to writing data in a pre-specified area within the display area 122. When a write confirmation button is displayed for each piece of writing data, the write confirmation button is displayed at a fixed distance from the writing data area. In FIG. 4, the write confirmation button 107 is displayed at the upper left, a fixed distance from the writing data area 105, and the write confirmation button 108 is displayed at the lower right, a fixed distance from the writing data area 106. Furthermore, the write confirmation button 109 corresponding to all writing data in the display area 122 is displayed at the upper right within the display area 122. Furthermore, after the write confirmation button is pressed, the display may be erased or may continue to be displayed. Furthermore, after the write confirmation button is pressed, the write mode may be switched from the temporary write mode to the confirmed write mode. Furthermore, if the write confirmation button is left as it is rather than erased after pressing, the write mode may be switched between the confirmed write mode and the temporary write mode, and the write data may be switched between the temporary write data and the confirmed write data, each time the write confirmation button is pressed.

[0028] <Writing data write confirmation process> FIG. 5 is a diagram showing an example of a sequence related to the display process of the write confirmation button according to an embodiment of the present invention. In this sequence, the display device 2 displays the write confirmation button when the user inputs write data in temporary write mode, and erases the write data and the write confirmation button if N seconds have passed since the last input of write data without the user pressing the write confirmation button. Furthermore, if the user presses the write confirmation button within N seconds after inputting the write data, the display device 2 changes the temporary write data to the confirmed write data. FIG. 6 is a diagram showing an example of a display screen in the display process of the write confirmation button according to an embodiment of the present invention, and shows the display screen displayed on the display device 2 in this sequence. The processing of each step in FIG. 5 will be described below with reference to the display screen of FIG. 6.

[0029] Step S20: The operation reception unit 10 of the display device 2 receives handwritten data written by the user on the display of the display device 2 using an input means such as a hand or an electronic pen, and transmits the received written data to the judgment unit 12 of the display device 2 as operation information.

[0030] Step S21: Since the write mode is the temporary write mode and the write confirmation button is not displayed, the judgment unit 12 of the display device 2 sends a message to the display control unit 11 requesting the display of the write data and the write confirmation button.

[0031] Step S22: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the writing data 111 and the writing confirmation button 112 as shown on the display screen 110 in FIG.

[0032] Step S23: The operation accepting unit 10 of the display device 2 accepts new written data by the user, similar to the process in step S20, and transmits the accepted written data to the determining unit 12 of the display device 2 as operation information.

[0033] Step S24: Since the write mode is the temporary write mode and the write confirmation button 112 is already displayed, the judgment unit 12 of the display device 2 sends a message to the display control unit 11 requesting the display of the newly accepted write data.

[0034] Step S25: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 further displays the writing data 114 as shown on the display screen 113 in FIG.

[0035] Step S26: The operation reception unit 10 of the display device 2 receives new writing data from the user, and transmits the received writing data to the determination unit 12 of the display device 2 as operation information.

[0036] Step S27: Since the write mode is the temporary write mode and the write confirmation button 112 is already displayed, the judgment unit 12 of the display device 2 sends a message to the display control unit 11 requesting the display of the newly accepted write data.

[0037] Step S28: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 further displays the writing data 116 as shown on the display screen 115 of FIG.

[0038] Step S29: The determination unit 12 of the display device 2 detects that no new input of write data or pressing of the write confirmation button 112 has been received within N seconds since the last time write data was received. Here, N is a predetermined fixed time, for example, N=10. Based on this detection result, the determination unit 12 sends a message to the display control unit 11 requesting the deletion of the displayed write data 111, 114, 116 and the write confirmation button 112.

[0039] Step S30: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 erases the display of the writing data 111, 114, 116 and the writing confirmation button 112.

[0040] Step S31: The operation accepting unit 10 of the display device 2 accepts new written data by the user, and transmits the accepted written data to the determining unit 12 of the display device 2 as operation information.

[0041] Step S32: Since the write mode is the temporary write mode and the write confirmation button is not displayed, the judgment unit 12 of the display device 2 sends a message to the display control unit 11 requesting the display of the write data and the write confirmation button.

[0042] Step S33: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the writing data 118 and the writing confirmation button 119 as shown on the display screen 117 in FIG.

[0043] Step S34: The operation accepting unit 10 of the display device 2 accepts the user pressing the write confirmation button 119, and transmits this to the determining unit 12 of the display device 2 as operation information.

[0044] Step S35: The determination unit 12 of the display device 2 detects that the write confirmation button 112 has been pressed within N seconds since the last time the write data was received. Based on this detection result, the determination unit 12 displays the displayed write data 118 as confirmed write data, and transmits a message to the display control unit 11 requesting that the write confirmation button 119 be deleted.

[0045] Step S36: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the displayed writing data 118 as confirmed writing data and erases the display of the writing confirmation button 119. For example, the display control unit 11 may delete the writing data 118 displayed as temporary writing data, and then write the writing data 118 as confirmed writing data. Furthermore, the display control unit 11 may change the color, thickness, transparency, etc. of the stroke in the writing data 118 newly written as confirmed writing data so that it is clear that the writing data 118 has been changed from temporary writing data to confirmed writing data. Furthermore, after detecting the pressing of the writing confirmation button, the determination unit 12 of the display device 2 may change the writing mode to the confirmed writing mode and treat the writing data by the user as confirmed writing data.

[0046] Through the above process, the display device 2 displays the write confirmation button when the user inputs writing data (temporary writing data) in the temporary writing mode (marker mode). Furthermore, if the display device 2 detects that the user has pressed the write confirmation button within a predetermined period of time after the user last inputs temporary writing data, it can change the displayed temporary writing data to confirmed writing data. That is, in a mode in which the display of data input by the user is erased after a certain period of time has elapsed, the display device 2 can display the input data even after a certain period of time has elapsed after the data has been input.

[0047] <Second write confirmation process for write data> FIG. 7 is a diagram showing an example of a sequence relating to a second display process of the write confirmation button according to an embodiment of the present invention. In this sequence, a display process different from the process shown in FIG. 5 will be described with respect to the process relating to the display of the write confirmation button. Also, FIG. 8 is a diagram showing an example of a display screen in the second display process of the write confirmation button according to an embodiment of the present invention, and shows the display screen displayed on the display device 2 in this sequence. The process of each step in FIG. 7 will be described below together with the display screen in FIG. 8.

[0048] Step S40: As in the process of step S20 in FIG. 5, the operation reception unit 10 of the display device 2 receives data written by the user and transmits the received data written as operation information to the determination unit 12 of the display device 2.

[0049] Step S41: The determination unit 12 of the display device 2 transmits a message requesting the display of the write data to the display control unit 11. Unlike the process of step S21 in Fig. 5, the determination unit 12 does not request the display of a write confirmation button at this point.

[0050] Step S42: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the writing data 131 as shown on the display screen 130 in FIG.

[0051] Step S43: The operation accepting unit 10 of the display device 2 accepts new written data by the user, and transmits the accepted written data to the determining unit 12 of the display device 2 as operation information.

[0052] Step S44: The determination unit 12 of the display device 2 transmits to the display control unit 11 a message requesting the display of the written data.

[0053] Step S45: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the writing data 133 as shown on the display screen 132 in FIG.

[0054] Step S46: The determination unit 12 of the display device 2 detects that no new input of write data has been accepted within N seconds since the last time write data was accepted. Here, N is a predetermined fixed time, for example, N=10. Based on this detection result, the determination unit 12 transmits a message to the display control unit 11 requesting the display of a write confirmation button.

[0055] Step S47: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the write confirmation button 135 as shown on the display screen 134 in FIG.

[0056] Step S48: The operation accepting unit 10 of the display device 2 accepts new writing data by the user, and transmits the accepted writing data to the determining unit 12 of the display device 2 as operation information.

[0057] Step S49: The determination unit 12 of the display device 2 detects that input of new write data has been accepted before M seconds have elapsed since the write confirmation button was displayed. Here, M is a predetermined fixed time, for example, M=10. Based on this detection result, the determination unit 12 transmits a message to the display control unit 11 requesting the display of the write data and the deletion of the write confirmation button 135.

[0058] Step S50: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the write data 137 and erases the write confirmation button 135 as shown on the display screen 136 in FIG.

[0059] Step S51: As in the process of step S46, the display control unit 11 of the display device 2 detects that no new input of write data has been accepted within N seconds since the last acceptance of write data. Based on this detection result, the determination unit 12 transmits a message to the display control unit 11 requesting the display of a write confirmation button.

[0060] Step S52: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 displays the write confirmation button 139 as shown on the display screen 138 in FIG.

[0061] Step S53: The determination unit 12 of the display device 2 detects that no new writing data has been input or no pressing of the writing confirmation button 139 has been accepted within M seconds since the writing confirmation button was displayed. Based on this detection result, the determination unit 12 transmits a message to the display control unit 11 requesting that the displayed writing data 131, 133, 137 and the writing confirmation button 139 be erased.

[0062] Step S54: Based on the request message received from the determination unit 12, the display control unit 11 of the display device 2 erases the displayed writing data 131, 133, 137 and the writing confirmation button 139.

[0063] Through the above process, if the display device 2 does not detect the input of new write data for N seconds after the user inputs temporary write data in the temporary write mode (marker mode), it displays the write confirmation button. Furthermore, if the display device 2 does not detect the input of new temporary write data or the press of the write confirmation button for M seconds, it erases the display of all temporary write data and the write confirmation button. Note that in this sequence, as with the process shown in FIG. 5, the display device 2 can change the displayed temporary write data to confirmed write data when it receives the press of the write confirmation button. That is, in a mode in which the display of data input by the user is erased after a certain time has elapsed, the display device 2 can display the input data even after a certain time has elapsed after the data has been input.

[0064] <Write confirmation process when write mode is asynchronous> 9 is a diagram showing an example of a sequence relating to data display processing when the write modes are asynchronous according to an embodiment of the present invention. This sequence describes processing in the case where the write modes are not synchronized between the display devices 2 at each location (here, as an example, between the display devices 2a and 2b at two locations) when a conference or the like is held between locations via the server device 3. The processing of each step in FIG. 9 will be described below.

[0065] Step S60: Similar to the processing shown in step S20 of FIG. 5, the operation reception unit 10 of the display device 2a receives handwritten data written by the user on the display of the display device 2 using an input means such as a hand or an electronic pen in temporary writing mode (marker mode).

[0066] Step S61: The display control unit 11 of the display device 2a displays the temporary write data and the write confirmation button, similar to the processing shown in step S22 of Fig. 5. In this sequence, the description of the processing related to the display of the confirm write button by the determination unit 12 will be omitted, but the display control unit 11 displays the write confirmation button based on the processing of the determination unit 12.

[0067] Step S62: The communication unit 13 of the display device 2a transmits a message requesting the display of the temporary writing data to the server device 3. The request message includes information about the temporary writing data (display position, stroke color, thickness, transparency, etc.).

[0068] Step S63: The server device 3 transmits the received request message to the communication unit 13 of the display device 2b.

[0069] Step S64: The display control unit 11 of the display device 2b displays the temporary write data based on the received request message.

[0070] Step S65: The operation reception unit 10 of the display device 2a detects that the user has pressed the write confirmation button.

[0071] Step S66: The display control unit 11 of the display device 2a erases the display of the temporary write data and the write confirmation button.

[0072] Step S67: The communication unit 13 of the display device 2a transmits to the server device 3 a message requesting the deletion of the temporarily written data.

[0073] Step S68: The server device 3 transmits the received request message to the communication unit 13 of the display device 2b.

[0074] Step S69: The display control unit 11 of the display device 2b erases the display of the temporarily written data.

[0075] Step S70: The display control unit 11 of the display device 2a displays the temporary writing data erased in step S66 as confirmed writing data (which will not be erased even after a certain time has passed). Here, to make it clear that the temporary writing data has been changed to confirmed writing data, the color, thickness, transparency, etc. of the stroke in the confirmed writing data may be specified to be different from the information in the temporary writing data displayed in step S61.

[0076] Step S71: The communication unit 13 of the display device 2 transmits a message requesting the display of the confirmed write data to the server device 3. The request message includes information about the confirmed write data (display position, stroke color, thickness, transparency, etc.).

[0077] Step S72: The server device 3 transmits the received request message to the communication unit 13 of the display device 2b.

[0078] Step S73: The display control unit 11 of the display device 2b displays the confirmed write data (which will not be erased even after a certain time has passed) based on the received request message.

[0079] By the above process, when the write modes are not synchronized among the display devices 2 at each site, the display device 2 can display the input data even after a certain time has passed in the temporary write mode. Similarly, when there are three or more display devices 2, the server device 3 transmits the request message to all the display devices 2 except the display device 2 from which the request message was received.

[0080] <Write confirmation process when write mode is synchronized> Fig. 10 is a diagram showing an example of a sequence relating to data display processing when writing modes are synchronized according to an embodiment of the present invention. This sequence describes processing when writing modes are synchronized between display devices 2 at each location (here, as an example, between display devices 2a and 2b at two locations) when a conference or the like is held between locations via a server device 3. Below, the processing of each step in Fig. 10 will be described, focusing on the differences from the processing in Fig. 9.

[0081] At the start, the write mode of the display devices 2a and 2b is the temporary write mode (marker mode). Steps S75 to S88 execute the same processes as steps S60 to S73 in FIG.

[0082] Step S89: The control unit 14 of the display device 2a switches the write mode from the temporary write mode to the fixed write mode.

[0083] Step S90: The communication unit 13 of the display device 2a transmits to the server device 3 a message requesting switching of the write mode from the temporary write mode to the fixed write mode.

[0084] Step S91: The server device 3 transmits the received request message to the communication unit 13 of the display device 2b.

[0085] Step S92: The control unit 14 of the display device 2b switches the write mode from the temporary write mode to the fixed write mode. At this point, the write mode changes from the temporary write mode to the fixed write mode in both the display device 2a and the display device 2b.

[0086] Step S93: In the final write mode (pen mode), the operation reception unit 10 of the display device 2a receives handwritten data written by the user on the display of the display device 2 using an input means such as a hand or an electronic pen.

[0087] Step S94: The display control unit 11 of the display device 2a displays the confirmed write data.

[0088] Step S95: The communication unit 13 of the display device 2a transmits a message requesting the display of the confirmed write data to the server device 3. The request message includes information about the confirmed write data (display position, stroke color, thickness, transparency, etc.).

[0089] Step S96: The server device 3 transmits the received request message to the communication unit 13 of the display device 2b.

[0090] Step S97: The display control unit 11 of the display device 2b displays the confirmed write data based on the received request message.

[0091] By the above process, when the write modes are synchronized among the display devices 2 at each base, the display device 2 can display the input data even after a certain time has passed in the temporary write mode. Similarly, when there are three or more display devices 2, the server device 3 transmits the request message to all the display devices 2 except the display device 2 from which the request message was received.

[0092] <Modification> As a modified example, the operation of pressing the final write button may be performed by voice recognition using a voice input by the user from the microphone 240 of the display device 2, or by clicking the mouse 220 of the display device 2. Alternatively, switching between the temporary write data and the final write data, or switching between the write modes, may be performed by an operation other than pressing the final write button. For example, switching between the temporary write data and the final write data, or switching between the write modes, may be performed by a gesture operation (a predetermined specific operation) via the contact sensor 214 using the electronic pen 290 or the user's hand H, or by voice recognition using the input voice described above, a gesture operation using a mouse, or the like.

[0093] 9 or 10, also in the display device 2b, for example, a confirm write button may be displayed in addition to the temporary write data in steps S62 to S64 of Fig. 9, and the display of the confirm write button may be erased in steps S67 to S69 of Fig. 9. Furthermore, separate from the input of write data by a user on the display device 2a, another user on the display device 2b may simultaneously input write data, and at this time, a confirm write button may be displayed for the write data for each user, or a common confirm write button may be displayed for the write data of all users.

[0094] Although several forms for carrying out the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and substitutions can be made within the scope that does not deviate from the gist of the present invention.

[0095] For example, the example of the functional block configuration diagram in Figure 3 is divided according to main functions to make it easier to understand the processing by the display system 1 and the display device 2. The method of dividing the processing units and the names thereof do not limit the present invention. The processing by the display system 1 and the display device 2 can be divided into even more processing units depending on the processing content. Furthermore, the processing can also be divided so that one processing unit includes even more processes.

[0096] Furthermore, each function of the above-described embodiments can be realized by one or more processing circuits. Here, the term "processing circuit" in this specification includes a processor programmed to perform each function by software, such as a processor implemented by an electronic circuit, as well as devices such as an ASIC (Application Specific Integrated Circuit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and conventional circuit modules designed to perform each of the above-described functions.

[0097] Additionally, the described devices represent only one of several computing environments for implementing the embodiments disclosed herein. In one embodiment, display system 1 and display device 2 include multiple computing devices, such as a server cluster, configured to communicate with each other via any type of communication link, including a network, shared memory, etc., and to perform the processes disclosed herein. [Explanation of symbols]

[0098] 1 Display System 2 Display device 3. Server equipment 4. Communication Network 10 Operation reception section 11 Display control unit 12 Judgment Department 13 Communications Department 14 Control Unit [Prior art documents] [Patent documents]

[0099] [Patent Document 1] Patent No. 5906922

Claims

1. an operation receiving unit that receives input of data to be displayed by a user; a determination unit that determines whether or not the user has performed an operation to change the write mode to a fixed write mode in which the display of the data is not erased, for data that has been input in a temporary write mode in which the display of the data is erased after a certain time has elapsed since the input of the data; a display control unit that automatically displays a write confirmation button for changing the write mode; and the determination unit determines whether to change the write mode based on whether pressing of the write confirmation button has been accepted within a predetermined time after the data has been input, The display control unit is a display device that switches the display of the data from the temporary write mode to the fixed write mode when the judgment unit determines that an operation to change the write mode has been performed.

2. The display device according to claim 1 , wherein the display control unit displays the write confirmation button when the user first inputs the data while the write mode is the temporary write mode and the write confirmation button is not displayed.

3. The display device according to claim 1 , wherein the display control unit displays a plurality of the write confirmation buttons corresponding to a plurality of the data.

4. The display device according to claim 1 , wherein the display control unit displays one of the write confirmation buttons for a plurality of the data displayed within a predetermined range.

5. The display device according to claim 1 , wherein the display control unit displays the write confirmation button for each of the users who input the data.

6. The display device according to claim 1 , wherein the display control unit displays one write confirmation button for each of the data input by the user.

7. The display device according to claim 1 , wherein the display control unit displays the data in the temporary write mode and the fixed write mode so that at least one of color, thickness, and transparency is different.

8. The display device according to claim 1 , wherein the operation receiving unit receives a voice operation or a mouse operation from the user as the operation for the determination unit to change the writing mode.

9. an operation receiving unit step of receiving input of data to be displayed by a user; a determination step of determining whether or not the user has performed an operation to change the write mode to a fixed write mode in which the display of the data is not erased, for data input in a temporary write mode in which the display of the data is erased after a certain time has elapsed since the input of the data; a display control step of automatically displaying a write confirmation button for changing the write mode; A program for causing a display device to execute the above, the determining step determines whether to change the write mode based on whether pressing of the write confirmation button is accepted within a predetermined time after the data is input, The display control step is a program for switching the display of the data from the temporary write mode to the fixed write mode when it is determined in the determination step that an operation to change the write mode has been performed.

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