JP2015201120A - Display system and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display system and a display method that can start up fast when a power source changes its power supply state from a power non-supply state to a power supply state, and also can secure security.SOLUTION: When an instruction for change from a power supply state to a first power non-supply state is input on a touch panel (13), a control part (21) of a control device (2) ends a program for image display being actuated, after storing an edited image displayed at a display part (11) in a second storage part (222). When an instruction for change from the power supply state to a second power non-supply state is input on the touch panel (13), the control part (21) ends the program for image display being actuated, without storing the edited image displayed at the display part (11) in a second storage part (222).

Description

  The present invention relates to a display system having a sleep function and a display method.

  A display system having a large display, represented by an electronic whiteboard or an electronic blackboard, is used as an information device for presenting various types of information to multiple viewers at meetings, business presentations, education, training, etc. Used.

  For example, Patent Document 1 discloses a display system including a computer, a keyboard, and a display, and includes a first connection unit that connects the keyboard and the display, and a second connection unit that connects the display and the computer. Is disclosed. The display system disclosed in Patent Document 1 is configured to send the same code as the start instruction key or the shutoff instruction key to the computer using the second connection means in response to pressing of the power switch. Yes. In the display system disclosed in Patent Document 1 configured as described above, the power sources of the computer and the display can be linked with one operation of the operator.

  However, the display system disclosed in Patent Document 1 is activated when the system is started by supplying power from the power source to the computer and the display after the power is turned off (OFF) and then the system is turned on. There is a problem that time becomes long.

  As a method for solving such a problem, a method of setting a sleep mode (suspend mode) has been proposed. When shifting from the normal mode to the sleep mode, an operating system (OS) program, various application programs, and work data activated in the display system are stored in a RAM (Random Access Memory) or HDD (Hard Disk Drive). After the storage, the power supply state of the power source is switched from the power supply state to the non-power supply state without completely shutting off the power source.

  In the display system shifted to the sleep mode as described above, when the power supply state by the power source is switched from the non-power supply state to the power supply state, it was activated at the time of setting the normal mode immediately before the transition to the sleep mode. Since the OS program, various application programs, and work data are read from the RAM and HDD and the system is activated, the system is restored from the sleep mode, so that high-speed activation can be realized.

JP 2009-98753 A

  In the above prior art, when the power supply state by the power source is switched from the power supply state to the non-power supply state, the next system start-up can be started at high speed by shifting to the sleep mode. Work data immediately before shifting to the mode is also read from the RAM or HDD, and an image based on the read work data is displayed on the display.

  As described above, when an image based on the work data immediately before the transition to the sleep mode is displayed on the display display, information for the user of the display system immediately before the transition to the sleep mode is displayed after the return to the sleep mode. It becomes known to users of the system and there are security issues.

  An object of the present invention is to provide a display system and a display method capable of realizing high-speed start-up and ensuring security when the power supply state by a power source is switched from a non-power supply state to a power supply state. It is.

The present invention includes a power supply unit,
A nonvolatile first storage unit for storing an image display program;
A display unit connected to the power supply unit and supplied with power from the power supply unit;
A first display control unit that activates the image display program stored in the first storage unit and causes the display unit to display a reference image based on the image display program;
An image editing content input unit for inputting editing content to be applied to the reference image displayed on the display unit;
A second display control unit that edits the reference image based on the editing content input to the image editing content input unit, and displays the edited editing image on the display unit;
A second storage unit capable of storing the edited image displayed on the display unit;
A first switching instruction input unit for inputting an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state or the second non-power supply state;
A control unit for controlling a power supply state from the power supply unit to the display unit;
When an instruction to switch from the power supply state to the first non-power supply state is input to the first switch instruction input unit, after the edited image displayed on the display unit is stored in the second storage unit, Terminate the image display program being started, and switch the power supply state to the display unit to the first non-power supply state,
When an instruction to switch from the power feeding state to the second non-power feeding state is input to the first switching instruction input unit, the edited image displayed on the display unit is not stored in the second storage unit, And a control unit that terminates the image display program that is being activated and switches the supply state of power to the display unit to the second non-power supply state.

In the display system of the present invention, the second switching in which an instruction to switch the power supply state from the power supply unit to the display unit from the first non-power supply state or the second non-power supply state to the power supply state is input. An instruction input unit;
The controller is
When an instruction to switch from the first non-power supply state to the power supply state is input to the second switch instruction input unit, the power supply state to the display unit is switched to the power supply state, and the first display control unit After starting the image display program, the edited image stored in the second storage unit is displayed on the display unit,
When an instruction to switch from the second non-power supply state to the power supply state is input to the second switch instruction input unit, the power supply state to the display unit is switched to the power supply state, and the first display control unit The image display program is activated to display the reference image on the display unit.

  In the display system of the present invention, the second storage unit is a nonvolatile hard disk drive.

According to the present invention, a first display for starting an image display program stored in advance in the first storage unit and displaying a reference image based on the image display program on the display unit supplied with power from the power supply unit. Control process;
An image editing content input step in which editing content to be applied to the reference image displayed on the display unit is input;
A second display control step of editing the reference image based on the editing content input in the image editing content input step, and displaying the edited editing image on the display unit;
A first switching instruction input step in which an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state or the second non-power supply state;
A control step of controlling a power supply state from the power supply unit to the display unit,
When an instruction to switch from the power supply state to the first non-power supply state is input in the first switching instruction input step, the edited image displayed on the display unit is stored in the second storage unit and then activated. Ending the image display program therein, switching the power supply state to the display unit to the first non-power supply state,
When an instruction to switch from the power supply state to the second non-power supply state is input in the first switching instruction input step, the edited image displayed on the display unit is not stored in the second storage unit, And a control step of ending the image display program that is being activated and switching the power supply state to the display unit to the second non-power supply state.

  According to the present invention, the control unit controls the supply state of power to the display unit by the power supply unit. When an instruction to switch the power supply state of the power supply unit from the power supply state to the first non-power supply state is input to the first switching instruction input unit, the control unit edits the display displayed on the display unit. After the image is stored in the second storage unit, the activated image display program is terminated, and the power supply state to the display unit is switched to the first non-power supply state. In addition, when an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the second non-power supply state is input to the first switching instruction input unit, the control unit is displayed on the display unit. The image display program that is being activated is terminated without storing the edited image in the second storage unit, and the power supply state to the display unit is switched to the second non-power supply state.

  In the display system according to the present invention configured as described above, when the operator switches the power supply state from the power supply unit to the display unit from the power supply state to the non-power supply state, the first non-power supply state and the second Two non-power supply states can be selected. In the display system, when an instruction to switch to the first non-power supply state is input by the operator, the control unit terminates the image display program after storing the edited image in the second storage unit. This is convenient when suspending a conference using the system. That is, when resuming the conference using the display system, the edited image stored in the second storage unit can be read and displayed on the display unit, so that the conference after resumption can proceed smoothly.

  In the display system, when an instruction to switch to the second non-power supply state is input by the operator, the control unit terminates the image display program without storing the edited image in the second storage unit. For example, it is convenient when a conference using a display system is ended. That is, even if another operator activates the display system after the conference using the display system is finished, the edited image is not stored in the second storage unit. It is possible to prevent the displayed edited image from being displayed on the display unit when the system is started by another operator. This prevents information based on the edited image from being known to other operators, and ensures security.

  According to the invention, in the control step, the power supply state to the display unit by the power source unit is controlled. In this control step, when an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state is input in the first switching instruction input step, the edit displayed on the display unit After the image is stored in the second storage unit, the activated image display program is terminated, and the power supply state to the display unit is switched to the first non-power supply state. In the control process, when an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the second non-power supply state is input in the first switching instruction input step, the display unit displays the power. The image display program that is being activated is terminated without storing the edited image in the second storage unit, and the power supply state to the display unit is switched to the second non-power supply state.

  In the display method according to the present invention configured as described above, when the operator switches the power supply state from the power supply unit to the display unit from the power supply state to the non-power supply state, the first non-power supply state and the second Two non-power supply states can be selected. In the display method, when an instruction to switch to the first non-power supply state is input by the operator in the first switching instruction input step, the image display program is stored after the edited image is stored in the second storage unit in the control step. For example, it is convenient when the conference using the display method is temporarily suspended. That is, when resuming the conference using the display method, the edited image stored in the second storage unit can be read and displayed on the display unit, so that the conference after resumption can proceed smoothly.

  Further, in the display method, when an instruction to switch to the second non-power supply state is input by the operator in the first switching instruction input step, an image display is performed without storing the edited image in the second storage unit in the control step. For example, it is convenient when ending a conference using the display method. That is, even if another operator uses the display method after the conference using the display method ends, the edited image is not stored in the second storage unit. It is possible to prevent the edited image from being displayed on the display unit when another operator uses the display method. This prevents information based on the edited image from being known to other operators, and ensures security.

1 is a block diagram illustrating a configuration of a display system 100 according to an embodiment of the present invention. FIG. 3 is a diagram schematically showing a configuration of a touch panel 13. 4 is a diagram illustrating an example of a reference image displayed on a display surface 11a of a display unit 11. FIG. It is a flowchart which shows operation | movement of the display system 100 to which the display method which concerns on one Embodiment of this invention was applied. It is a flowchart which shows operation | movement of the display system 100 to which the display method which concerns on one Embodiment of this invention was applied. It is a flowchart which shows operation | movement of the display system 100 to which the display method which concerns on one Embodiment of this invention was applied. It is a flowchart which shows operation | movement of the display system 100 to which the display method which concerns on one Embodiment of this invention was applied. 6 is a diagram illustrating an example of a non-power supply state switching instruction icon displayed on the display surface 11a of the display unit 11. FIG. An example of an image displayed on the display surface 11a of the display unit 11 when the power supply state by the power supply unit 14 is switched to the first non-power supply state and the sleep mode is switched to the power supply state. FIG.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a display system 100 according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing the configuration of the touch panel 13. FIG. 3 is a diagram illustrating an example of a reference image displayed on the display surface 11 a of the display unit 11. The display system 100 can be used as an information device for presenting various types of information to a plurality of viewers at a conference, business presentation, education, training, or the like. The display system 100 includes a display device 1, a control device 2, and an input device 3.

  The display device 1 includes a display unit 11, a display processing unit 12, a touch panel 13 that functions as an image editing content input unit and a first switching instruction input unit, a power supply unit 14, a first display control unit, and a second display control. The display control part 15 which functions as a part, the display side memory | storage part 16, and the display side interface part 17 are included.

  The power supply unit 14 includes a power supply 141 and a power supply SW (switch) 142 that functions as a second switching instruction input unit. The power supply unit 14 supplies power from the power supply 141 to each unit constituting the display device 1 in accordance with the operation of the power supply SW 142 by the operator. The power source 141 may be an external power source or an internal power source including a rechargeable battery (battery). Further, in the present embodiment, the power supply unit 14 of the display device 1 and the power supply unit of the control device 2 are configured such that the power supply state is interlocked. That is, when the power supply state by the power supply unit 14 of the display device 1 is the power supply state, the power supply state by the power supply unit of the control device 2 is also the power supply state, and the power supply by the power supply unit 14 of the display device 1 is When the supply state is the non-power supply state, the power supply state by the power supply unit of the control device 2 is also the non-power supply state.

  The display control unit 15 is controlled by the control unit 21 of the control device 2 to be described later, and comprehensively controls the operation of each unit constituting the display device 1. The display control unit 15 is a processing circuit realized by, for example, a microcomputer or a microprocessor that includes a central processing unit (CPU).

  The display-side storage unit 16 generates various data generated when each unit of the display device 1 controlled by the display control unit 15 operates (for example, position data indicating the touch position by the operator detected by the touch panel 13). Remember. Hereinafter, various data including the position data generated when each unit of the display device 1 controlled by the display control unit 15 operates is referred to as work data.

  The display processing unit 12 controls the operation of the display unit 11 to display an image according to the instruction of the display control unit 15 controlled by the control unit 21, and displays the image on the display surface 11 a of the display unit 11.

  The display unit 11 displays an image according to an instruction from the display processing unit 12 on the display surface 11a. In the present embodiment, a 60-inch size liquid crystal display device having a rectangular display surface 11 a is used as the display unit 11. In addition, the display part 11 should just be what can display the image according to image data, for example, a plasma display, an organic electroluminescent (EL) display, CRT, etc. may be used. Further, the size of the display unit 11 is not particularly limited.

  The touch panel 13 includes a light emitting unit 131, a light receiving unit 132, a light emission processing unit 133, a light reception processing unit 134, and an A / D conversion unit (A / D converter) 135. The touch panel 13 performs a process of detecting a touch operation by an operator according to an instruction from the display control unit 15 and transmits the detection result to the display control unit 15.

  The light emitting unit 131 includes a plurality of light emitting elements 131a and 131b that emit infrared light, and the light receiving unit 132 includes a plurality of light receiving elements 132a and 132b that receive infrared light emitted from the light emitting elements 131a and 131b. Become. As the light emitting elements 131a and 131b, for example, light emitting diodes (LEDs) that emit infrared light can be used.

Specifically, as shown in FIG. 2, a plurality of light emitting elements 131a are arranged at a predetermined pitch on one side of the long sides of the frame portion of the display unit 11 surrounding the peripheral part of the rectangular display surface 11a. A plurality of light receiving elements 132a that receive infrared light emitted from each light emitting element 131a are arranged at a predetermined pitch on the other long side opposite to the long side. In addition, a plurality of light emitting elements 131b are arranged at a predetermined pitch on one of the short sides of the frame portion, and infrared light emitted from each light emitting element 131b is placed on the other short side facing the short side. A plurality of light receiving elements 132b for receiving light are arranged at a predetermined pitch.

  Further, the light emitting unit 131 (each light emitting element 131a, 131b) is connected to the light emitting processing unit 133, and the light receiving unit 132 (each light receiving element 132a, 132b) is connected to the light receiving processing unit 134 and the A / D conversion unit 135. It is connected.

  In response to an instruction from the display control unit 15, the light emission processing unit 133 outputs a signal for selecting one of the plurality of light emitting elements 131 a and the plurality of light emitting elements 131 b to the light emitting unit 131. That is, when the display control unit 15 outputs a signal for sequentially causing the light emitting elements 131a and 131b to emit light to the light emission processing unit 133, the light emission processing unit 133 sequentially selects the light emitting elements 131a and 131b, The selected light emitting elements 131a and 131b are caused to emit light sequentially.

  In response to an instruction from the display control unit 15, the light reception processing unit 134 outputs a signal for selecting the light receiving elements 132 a and 132 b that perform infrared light reception processing to the light reception unit 132. That is, the display control unit 15 outputs a signal for sequentially emitting the light emitting elements 131a and 131b to the light emission processing unit 133, and the light receiving element 132a corresponding to the light emitting elements 131a and 131b to be emitted synchronized with the signal. , 132b, a signal for causing the light reception process to be performed is output to the light reception processing unit 134. As a result, the light receiving processing unit 134 causes each of the light receiving elements 132a and 132b to perform light receiving processing. Each of the light receiving elements 132 a and 132 b outputs an intensity signal indicating the intensity of the received infrared light as a voltage value to the A / D conversion unit 135 when selected by the light receiving processing unit 134.

  The A / D conversion unit 135 converts the intensity signal input from each of the light receiving elements 132 a and 132 b into a digital signal and transmits the digital signal to the display control unit 15.

  The display control unit 15 causes each of the light emitting elements 131a and 131b to emit light sequentially, and repeats the process of causing the light receiving elements 132a and 132b corresponding to the emitted light emitting elements 131a and 131b to perform the light receiving process. The intensity signals from 132a and 132b are acquired.

  The display control unit 15 calculates the amount of light received by each of the light receiving elements 132a and 132b from the intensity signal acquired from each of the light receiving elements 132a and 132b, and infrared light received by the light receiving elements 132a and 132b is a light emitting element. It is determined whether or not the light paths from 131a and 131b to the light receiving elements 132a and 132b are blocked. That is, when the amount of light received by a certain light receiving element 132a, 132b exceeds a predetermined threshold, the display control unit 15 determines that the infrared light received by the light receiving elements 132a, 132b is not blocked. If it is equal to or less than the threshold value, the display control unit 15 determines that the infrared light received by the light receiving elements 132a and 132b is blocked. In this way, the display control unit 15 identifies the light receiving elements 132a and 132b in which the optical path of the received infrared light is blocked.

  Accordingly, when any position on the display surface 11a is indicated by bringing the input device 3 or an object other than the input device 3 into contact with the display surface 11a of the display unit 11, the position corresponding to the contact position is set. The optical path is cut off, and the display control unit 15 calculates the position on the display surface 11a indicated by the input device 3 or an object other than the input device 3 from the specified positions of the light receiving elements 132a and 132b.

  In addition, the structure of the touch panel 13 is not limited to this, What is necessary is just a structure which can detect the touch operation to the display surface 11a by an operator. For example, not only the infrared blocking method, but also a resistive film method, a surface capacitance method, a projection capacitance method, an ultrasonic surface acoustic wave method, an acoustic pulse recognition method, a vibration detection method, an electromagnetic induction method, an image recognition method Alternatively, an LCD touch panel with a built-in optical sensor may be used. Further, for example, an overlay structure in which a touch panel for detecting an operator's touch operation is attached on a display surface of a display panel such as a liquid crystal display panel, a plasma display, or an organic EL panel may be used. The structure may be integrated with.

  The input device data reception unit 18 receives input device data transmitted from the data transmission unit 32 of the input device 3.

  The display-side interface unit 17 is for communicating with the control device 2 connected to the display device 1 so as to be communicable. The connection method between the display device 1 and the control device 2 is not particularly limited, and may be wired or wireless.

  The display control unit 15 receives the position data indicating the touch position of the operator on the display surface 11 a detected using the touch panel 13 and the input device data received by the input device data receiving unit 18 via the display-side interface unit 17. The controller 2 outputs the data. In addition, the display control unit 15 controls the display processing unit 12 to display an edited image indicating the position on the display surface 11a touch-operated by the input device 3 on the display surface 11a. Alternatively, an edited image such as a character, line, or figure is displayed at a position corresponding to the touch operation on the display surface 11a according to the locus of the position on the display surface 11a touched by the input device 3.

  The display control unit 15 controls each unit of the display device 1 according to data received from the control device 2 via the display-side interface unit 17. For example, the display control unit 15 activates the image display program in response to a signal received from the control device 2 to activate the image display program, and displays a reference image based on the image display program. Are displayed on the display surface 11a.

  In the example shown in FIG. 3, the reference image that the display control unit 15 displays on the display surface 11a of the display unit 11 has a menu icon group 11b composed of a plurality of menu icons arranged at the upper left portion of the display surface 11a. The menu corresponding to each menu icon is not particularly limited. For example, the menu for changing the color of characters and lines written by the input device 3 and the thickness of the characters and lines written by the input device 3 are changed. A menu for erasing a written character or line by a touch operation by the input device 3 (eraser function), a menu for scaling (enlarging or reducing) a display image, and displaying by the input device 3 Examples include a menu for performing processing for designating an object or range on the surface 11a, a menu for undoing (redoing) an operation performed immediately before, a menu for opening a predetermined folder, and the like. Hereinafter, among the menu icons constituting the menu icon group 11b, an icon for drawing a character or a line is referred to as a drawing icon.

  The operator can instruct processing corresponding to the menu by touching a menu icon corresponding to the desired menu at the tip of the input device 3. Further, the operator can draw characters, lines, figures, and the like by bringing the tip of the input device 3 into contact with an area other than the menu icon group 11b on the display surface 11a.

  In addition, the touch panel 13 changes the power supply state from the power supply state to the display device 1 including the display unit 11 and the control device 2 by the operation of the operator from the power supply state to the first non-power supply state or the second non-power supply. An instruction to switch to a state is input. The instruction for switching from the power supply state to the first non-power supply state or the second non-power supply state by the operator is an instruction for switching the display system 100 from the system activation state to the sleep mode. In the present embodiment, although details will be described later, when the control unit 21 of the control device 2 starts a system termination process for shifting the display system 100 from the system activation state to the system termination state, the display control unit 15 The first non-power-supply state switching instruction icon and the second non-power-supply state switching instruction icon are displayed on the display unit 11. The operator touches the position corresponding to the first non-power supply state switching instruction icon or the second non-power supply state switching instruction icon on the touch panel 13 to change from the power supply state to the first non-power supply state or the second non-power supply state. An instruction to switch to can be input.

(Second Embodiment)
In the above-described embodiment, the first non-power supply state switching instruction icon and the second non-power supply state switching instruction icon displayed on the display unit 11 are used for switching the power supply state. However, the present invention is not limited to this configuration. Instead, in the second embodiment, a mechanical power supply state switching SW (switch) may be used.

  In the present embodiment, the power supply SW 142 determines whether the power supply unit 14 supplies power to the display device 1 and the control device 2 including the display unit 11 according to the operation by the operator. 2 An instruction to switch from the non-power supply state to the power supply state is input. The instruction for switching from the first non-power supply state or the second non-power supply state to the power supply state by the operator is an instruction for returning the display system 100 from the sleep mode to the system activation state.

  The input device 3 is a so-called touch pen, and includes an input device processing unit 31 and a data transmission unit 32. The input device processing unit 31 includes a calculation unit, a memory that stores a control program, a memory that stores temporary data associated with the calculation, and the like. Or the like) is transmitted to the display device 1 via the data transmission unit 32.

  The control device 2 includes a control unit 21, a storage device 22, and a control side interface unit 23.

  The control unit 21 controls the display control unit 15 of the display device 1. The control unit 21 is a processing circuit realized by, for example, a microcomputer or a microprocessor that includes a central processing unit (CPU).

  The storage device 22 includes a first storage unit 221, a second storage unit 222, and a third storage unit 223. The first storage unit 221 is realized by a non-volatile semiconductor memory such as a flash memory, and stores an operating system (OS) program that realizes basic functions of the display system 100 and various application programs. Is memorized. The OS program and various application programs are referred to as an image display program.

  The second storage unit 222 is realized by a non-volatile memory such as a hard disk drive (HDD), and is configured to be able to store an edited image and work data displayed on the display surface 11a of the display unit 11. .

  The third storage unit 223 is realized by a volatile memory such as a RAM (Random Access Memory), and is activated in the display system 100 when the display system 100 is shifted from the system activation state to the sleep mode by the control unit 21. The image display program and work data are stored. The third storage unit 223 also includes the touch panel 13 corresponding to the first non-power supply state switching instruction icon displayed on the display unit 11 when the display system 100 is shifted from the system activation state to the sleep mode by the control unit 21. The first non-power supply state switching instruction data indicating that a touch operation has been performed on the position of the second, and the second non-power supply state switching indicating that a touch operation has been performed on the position of the touch panel 13 corresponding to the second non-power supply state switching instruction icon Instruction data is stored.

  In addition, the control unit 21 displays an instruction on the display unit 11 to switch the power supply state of the power supply unit 14 to the display device 1 including the display unit 11 and the control device 2 from the power supply state to the first non-power supply state. When an input is made by performing a touch operation on the position of the touch panel 13 corresponding to the first non-power supply state switching instruction icon, the edited image and work data displayed on the display surface 11a of the display unit 11 are stored in the second memory. After being stored in the unit 222, the activated image display program is terminated, and the power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the first non-power supply state.

  In addition, the control unit 21 displays an instruction on the display unit 11 to switch the power supply state from the power supply state to the second non-power supply state to the display device 1 including the display unit 11 and the control device 2 by the power supply unit 14. When the touch operation is performed at the position of the touch panel 13 corresponding to the second non-power supply state switching instruction icon, the edited image and work data displayed on the display surface 11a of the display unit 11 are stored in the second memory. The image display program being activated is terminated without being stored in the unit 222, and the power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the second non-power supply state.

(Third embodiment)
In the display system 100 according to the third embodiment, the control unit 21 changes the power supply state from the first non-power supply state to the display device 1 and the control device 2 including the display unit 11 by the power supply unit 14. When an instruction to switch to is input by the power supply SW 142, the power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the power supply state, and the image display program is started. The edited image and work data stored in the storage unit 222 are read, and the edited image is displayed on the display unit 11.

  In the display system 100 according to the third embodiment, the control unit 21 changes the power supply state from the second non-power supply state to the display device 1 and the control device 2 including the display unit 11 by the power supply unit 14. When an instruction to switch to is input by the power supply SW 142, the power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the power supply state, the image display program is started, and the reference image is displayed. Display on the unit 11.

  The control-side interface unit 23 is for communicating with the display device 1 connected to the control device 2 so as to be communicable.

(Fourth embodiment)
In the above-described embodiment, the configuration in which the display device 1 and the control device 2 are communicably connected has been described. However, the configuration is not limited to this configuration, and in the fourth embodiment, the display device 1 and the control device 2 are connected. The control device 2 may be integrally formed. In this case, the display control unit 15 of the display device 1 and the control unit 21 of the control device 2 may be formed by a common processing circuit.

  Next, the operation of the display system 100 will be described with reference to FIGS. 4A to 4D, 5, and 6. 4A to 4D are flowcharts showing the operation of the display system 100 to which the display method according to an embodiment of the present invention is applied. FIG. 5 is a diagram illustrating an example of a non-power supply state switching instruction icon displayed on the display surface 11 a of the display unit 11. FIG. 6 is displayed on the display surface 11a of the display unit 11 when the power supply state by the power supply unit 14 is switched to the first non-power supply state and the sleep mode is switched to the power supply state. It is a figure which shows an example of an image.

  In step s1, the control unit 21 determines whether or not the power SW 142 is turned on (ON), and the operation of the display system 100 is started. If it is determined that the power SW 142 is turned on, the process proceeds to step s2. If it is determined that the power SW 142 is not turned on, step s1 is repeated. When the power supply SW 142 is turned on, power is supplied from the power supply 141 to the display device 1 and the control device 2 to enter a power supply state. It should be noted that the control unit 21 is operable even when weak power is supplied from the power source 141 even before the power SW 142 is turned on.

  In step s2, the control unit 21 activates the image display program stored in the first storage unit 221. Next, in step s3, the control unit 21 controls the display control unit 15 to display a reference image based on the image display program on the display unit 11 (first display control step).

  Next, in step s4, the control unit 21 determines whether a touch operation on the touch panel 13 is detected via the display control unit 15. If a touch operation on the touch panel 13 is detected, the process proceeds to step s5. If a touch operation on the touch panel 13 is not detected, step s4 is repeated.

  In step s5, the control unit 21 determines whether the touch operation on the touch panel 13 is a touch operation on the drawing icon via the display control unit 15 (image editing content input step). If it is determined that the touch operation is for the drawing icon, the process proceeds to step s6. If it is determined that the touch operation is not for the drawing icon, the process proceeds to step s7.

  In step s6, the control unit 21 causes the display control unit 15 to execute a drawing process corresponding to the drawing icon touched. When the drawing process is executed in the display system 100, the edited image 11e in which the drawn image is superimposed on the reference image based on the image display program is displayed on the display unit 11 (second display control step). In step s7, the control unit 21 determines whether the touch operation on the touch panel 13 is a touch operation other than the system end. If it is determined that the touch operation is other than the system end, the process proceeds to step s8. If it is determined that the touch operation is not the system end, the process proceeds to step s9.

  In step s8, the control unit 21 causes the display control unit 15 to execute a touch operation handling process corresponding to the touch-operated icon. In step s9, the control unit 21 determines whether the touch operation on the touch panel 13 is a system end touch operation via the display control unit 15. If it is determined that the touch operation is an end of the system, the process proceeds to step s10. If it is determined that the touch operation is not an end of the system, step s9 is repeated.

  In step s10, the control unit 21 executes a system termination process. When the control unit 21 starts a system termination process for causing the display system 100 to transition from the system activation state to the system termination state, first, in step a1, the control unit 21 causes the display unit 11 via the display control unit 15 to first The power supply state switching instruction icon 11d and the second non-power supply state switching instruction icon 11c are displayed.

  Next, in step a <b> 2, the control unit 21 determines whether a touch operation on the touch panel 13 is detected via the display control unit 15. If a touch operation on the touch panel 13 is detected, the process proceeds to step a3. If a touch operation on the touch panel 13 is not detected, step a2 is repeated.

  In step a3, the control unit 21 determines whether the touch operation on the touch panel 13 is a touch operation on the second non-power supply state switching instruction icon 11c via the display control unit 15 (first switching instruction input step). ). If it is determined that the touch operation is for the second non-power supply state switching instruction icon 11c, the process proceeds to step a4. If it is determined that the touch operation is not for the second non-power supply state switching instruction icon 11c, the process proceeds to step a5. move on.

  In step a4, the control unit 21 executes a switching process for switching the power supply state of the power supply unit 14 from the power supply state to the second non-power supply state (control process). This switching process will be described later. In step a5, the control unit 21 determines whether or not the touch operation on the touch panel 13 is a touch operation on the first non-power supply state switching instruction icon 11d via the display control unit 15 (first switching instruction). Input process). If it is determined that the touch operation is performed on the first non-power supply state switching instruction icon 11d, the process proceeds to step a6. If it is determined that the touch operation is not performed on the first non-power supply state switching instruction icon 11d, the process proceeds to step a7. move on.

  In step a6, the control unit 21 executes a switching process for switching the power supply state by the power supply unit 14 from the power supply state to the first non-power supply state (control process). This switching process will be described later. In Step a <b> 7, the control unit 21 determines whether the touch operation on the touch panel 13 is a touch operation for canceling the system termination process via the display control unit 15. If it is determined that the touch operation is to cancel the system termination process, the process returns to step s4 described above. If it is determined that the touch operation is not to cancel the system termination process, the process returns to step a2.

  When the control unit 21 starts the switching process to the second non-power supply state in step a4, first, in step b1, the control unit 21 corresponds to the second non-power supply state switching instruction icon 11c displayed on the display unit 11. Second non-power-supply state switching instruction data indicating that a touch operation has been performed on the position of the touch panel 13 is stored in the third storage unit 223.

  Next, in step b <b> 2, the control unit 21 does not store the edited image and work data displayed on the display surface 11 a of the display unit 11 in the second storage unit 222 from the power supply unit of the control device 2 to the control device 2. After the power supply state is switched from the power supply state to the non-power supply state, the power supply state is switched again (so-called control device 2 is restarted).

  Next, in step b3, the control unit 21 activates an image display program. Next, in step b4, the control unit 21 stores the activated image display program in the third storage unit 223, terminates the image display program, and moves to the display device 1 and the control device 2 including the display unit 11. The power supply state is switched to the second non-power supply state. As a result, the display system 100 shifts from the system activation state to the sleep mode.

  Thus, after the switching process to the second non-power supply state is completed, the power supply state to the display device 1 and the control device 2 including the display unit 11 by the power supply unit 14 is changed from the second non-power supply state to the power supply. When an instruction to switch to the state is input by the power supply SW 142, the control unit 21 switches the power supply state to the display device 1 including the display unit 11 and the control device 2 to the power supply state, and the third memory configured by the RAM. The image display program stored in the unit 223 is activated to display the reference image shown in FIG. 3 on the display unit 11.

  When the control unit 21 starts the process of switching to the first non-power supply state in step a6, first, in step c1, the control unit 21 corresponds to the first non-power supply state switching instruction icon 11d displayed on the display unit 11. First non-power supply state switching instruction data indicating that a touch operation has been performed on the position of the touch panel 13 is stored in the third storage unit 223.

  In step c <b> 2, the control unit 21 stores the edited image and work data displayed on the display surface 11 a of the display unit 11 in the second storage unit 222.

  Next, in step c3, the control unit 21 switches the power supply state from the power supply unit of the control device 2 to the control device 2 from the power supply state to the non-power supply state, and then switches to the power supply state again (so-called control device 2). Restart).

  Next, in step c4, the control unit 21 activates an image display program. Next, in step c5, the control unit 21 reads the edited image and work data stored in the second storage unit 222.

  Next, in step c6, the control unit 21 stores the activated image display program, the edited image read from the second storage unit 222, and the work data in the third storage unit 223, and ends the image display program. The power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the first non-power supply state. As a result, the display system 100 shifts from the system activation state to the sleep mode.

  Thus, after the switching process to the first non-power supply state is completed, the power supply state from the first non-power supply state to the display device 1 and the control device 2 including the display unit 11 by the power supply unit 14 is supplied. When an instruction to switch to the state is input by the power supply SW 142, the control unit 21 switches the power supply state to the display device 1 including the display unit 11 and the control device 2 to the power supply state, and the third memory configured by the RAM. The image display program stored in the unit 223 is started, the edited image and the work data are read out, and the edited image 11e shown in FIG.

  In the display system 100 according to the present embodiment configured as described above and the display method according to the present embodiment executed by the display system 100, the operator includes the display device 1 including the display unit 11 by the power supply unit 14. When the power supply state to the control device 2 is switched from the power supply state to the non-power supply state, two non-power supply states of the first non-power supply state and the second non-power supply state can be selected. In the display system 100 and the display method executed by the display system 100, the control unit 21 stores the edited image in the second storage unit 222 when the operator inputs an instruction to switch to the first non-power supply state. Since the image display program is terminated after the image is displayed, it is convenient when, for example, a conference using the display system 100 is temporarily suspended. That is, when resuming a conference using the display system 100, the edited image stored in the second storage unit 222 can be read out and displayed on the display unit 11. Therefore, the resumed conference can proceed smoothly. Can do.

  In the display system 100 and the display method executed by the display system 100, when an instruction to switch to the second non-power supply state is input by the operator, the control unit 21 displays the edited image in the second storage unit 222. Since the image display program is terminated without being stored, it is convenient when, for example, a conference using the display system 100 is terminated. That is, even if another operator activates the display system 100 after the conference using the display system 100 is finished, the edited image is not stored in the second storage unit 222. The edited image displayed on the display unit 11 can be prevented from being displayed on the display unit 11 when the system is started by another operator. This prevents information based on the edited image from being known to other operators, and ensures security.

  Further, in the display system 100 and the display method executed by the display system 100 according to the present embodiment, the control device 2 is restarted in the switching process to the first non-powered state and the switching process to the second non-powered state. After the activation, the power supply state to the display device 1 and the control device 2 including the display unit 11 is switched to the first non-power supply state or the second non-power supply state. As described above, after the control device 2 is restarted, the memory leak due to continuous use of the memory can be suppressed by shifting to the sleep mode. Note that the memory leak is a phenomenon in which the usable memory capacity decreases during the operation of the display system 100.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Control apparatus 3 Input apparatus 11 Display part 12 Display processing part 13 Touch panel 14 Power supply part 15 Display control part 21 Control part 22 Storage device 100 Display system

Claims (5)

A power supply,
A nonvolatile first storage unit for storing an image display program;
A display unit connected to the power supply unit and supplied with power from the power supply unit;
A first display control unit that activates the image display program stored in the first storage unit and causes the display unit to display a reference image based on the image display program;
An image editing content input unit for inputting editing content to be applied to the reference image displayed on the display unit;
A second display control unit that edits the reference image based on the editing content input to the image editing content input unit, and displays the edited editing image on the display unit;
A second storage unit capable of storing the edited image displayed on the display unit;
A first switching instruction input unit for inputting an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state or the second non-power supply state;
A control unit for controlling a power supply state from the power supply unit to the display unit;
When an instruction to switch from the power supply state to the first non-power supply state is input to the first switch instruction input unit, after the edited image displayed on the display unit is stored in the second storage unit, Terminate the image display program being started, and switch the power supply state to the display unit to the first non-power supply state,
When an instruction to switch from the power feeding state to the second non-power feeding state is input to the first switching instruction input unit, the edited image displayed on the display unit is not stored in the second storage unit, And a control unit that terminates the image display program that is being activated and switches the supply state of power to the display unit to the second non-power supply state. A second switching instruction input unit for inputting an instruction to switch the power supply state from the power supply unit to the display unit from the first non-power supply state or the second non-power supply state to the power supply state;
The controller is
When an instruction to switch from the first non-power supply state to the power supply state is input to the second switch instruction input unit, the power supply state to the display unit is switched to the power supply state, and the first display control unit After starting the image display program, the edited image stored in the second storage unit is displayed on the display unit,
When an instruction to switch from the second non-power supply state to the power supply state is input to the second switch instruction input unit, the power supply state to the display unit is switched to the power supply state, and the first display control unit 2. The display system according to claim 1, wherein the image display program is activated to display the reference image on the display unit.   The display system according to claim 1, wherein the second storage unit is a non-volatile hard disk drive. A first storage step for storing an image display program;
A display unit connected to the power supply unit and supplied with power from the power supply unit;
A first display control unit that activates the image display program stored in the first storage unit and causes the display unit to display a reference image based on the image display program;
An image editing content input unit for inputting editing content to be applied to the reference image displayed on the display unit;
A second display control unit that edits the reference image based on the editing content input to the image editing content input unit, and displays the edited editing image on the display unit;
A second storage unit capable of storing the edited image displayed on the display unit;
A first switching instruction input unit for inputting an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state or the second non-power supply state;
A control unit for controlling a power supply state from the power supply unit to the display unit;
When an instruction to switch from the power supply state to the first non-power supply state is input to the first switch instruction input unit, after the edited image displayed on the display unit is stored in the second storage unit, Terminate the image display program being started, and switch the power supply state to the display unit to the first non-power supply state,
When an instruction to switch from the power feeding state to the second non-power feeding state is input to the first switching instruction input unit, the edited image displayed on the display unit is not stored in the second storage unit, And a control unit that terminates the image display program that is being activated and switches the supply state of power to the display unit to the second non-power supply state. A first display control step of starting an image display program stored in advance in the first storage unit, and displaying a reference image based on the image display program on a display unit supplied with power from a power supply unit;
An image editing content input step in which editing content to be applied to the reference image displayed on the display unit is input;
A second display control step of editing the reference image based on the editing content input in the image editing content input step, and displaying the edited editing image on the display unit;
A first switching instruction input step in which an instruction to switch the power supply state from the power supply unit to the display unit from the power supply state to the first non-power supply state or the second non-power supply state;
A control step of controlling a power supply state from the power supply unit to the display unit,
When an instruction to switch from the power supply state to the first non-power supply state is input in the first switching instruction input step, the edited image displayed on the display unit is stored in the second storage unit and then activated. Ending the image display program therein, switching the power supply state to the display unit to the first non-power supply state,
When an instruction to switch from the power supply state to the second non-power supply state is input in the first switching instruction input step, the edited image displayed on the display unit is not stored in the second storage unit, And a control step of ending the image display program being activated and switching the power supply state to the display unit to the second non-power supply state.