JP2008151874A - Image display system, display control method and program, recording medium, and image output device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display system, a display control method, a display control program, a recording medium and an image output device, in which a stand-by state can be maintained when an operation not intended by a user is carried out. <P>SOLUTION: The image display system 1 includes an image display device 4, 21, an image output device 2 that outputs image information relating to a displayed image containing an object, and an operation device 3 that operates the object, wherein the image output device includes a controlling means 25 to control the display state by the image display device 4, 21. The controlling means 25 includes: a stand-by state setting section to set the display state of the image display device 4, 21 into a stand-by state; a buffer region setting section to set a buffer region in a predetermined size around the object in the displayed image when the display state is set to a stand-by state; a movement judging section to judge whether or not the object is moved out of the buffer region; and a stand-by canceling section to cancel the stand-by state when the object is judged as being moved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides an image display device that displays an image according to input image information, an image output device that outputs image information related to a display image including an object to the image display device, and the image display device on the display image. The present invention relates to an image display system including an operation device that operates an object, a display control method used in the image display system, a display control program, a recording medium, and an image output device.

2. Description of the Related Art Conventionally, an image output device that outputs image information related to a predetermined image to an image display device such as a liquid crystal display or a projector is known. As such an image output device, for example, a player that reproduces image information recorded on a recording medium such as a PC (Personal Computer) that executes predetermined processing, a CD (Compact Disc), and a DVD (Digital Versatile Disc) Etc.
Among these, in the PC, the PC is caused to execute a predetermined operation by operating a pointing device such as a mouse or an input operation on the keyboard, and image information relating to the image including the execution result is stored in the image display device. Output.

  By the way, in the PC, when the input operation to the pointing device or the keyboard is not performed for a predetermined time by the OS (Operation System), the output of the image information to the image display device is stopped, and the image display device is in the standby state. Thus, a display control method for saving power is known. However, in such a display control method, for example, even when the PC is configured to be able to reproduce music and an input operation related to music reproduction is performed, the standby state is canceled. During such music playback, image display by the image display device is not always necessary, and there is a problem that power consumption increases. For such a problem, there is known a display control method for continuing a standby state when a predetermined operation is input to the PC (see, for example, Patent Document 1).

  In the display control method described in Patent Document 1, a user's input operation on a keyboard and a mouse pad that is a pointing device is a first input operation for returning from a standby state, and a second input for maintaining the standby state. For example, when a second input operation related to music playback is performed, the standby state is not canceled. As a result, it is possible to save power on the PC while music playback is continued.

Japanese Patent Laid-Open No. 2002-73225

  However, the display control method described in Patent Document 1 has a problem that the standby state is canceled if the user moves the pointing device unintentionally. In other words, during the operation of the PC, the input operation is mainly performed by a pointing device such as a mouse, but the object such as the pointer or the content area is slightly changed due to an unexpected operation such as a hand hitting such a pointing device. When moving, there is a problem that the standby state is canceled.

  An object of the present invention is to provide an image display system, a display control method, a display control program, a recording medium, and an image output apparatus capable of maintaining a standby state when an operation unintended by a user is performed. is there.

  In order to achieve the above-described object, an image display system of the present invention includes an image display device that displays an image according to input image information, and image information related to a display image that includes an object in the image display device. An image display system comprising an image output device for outputting and an operation device for operating the object on the display image, wherein the image output device comprises control means for controlling a display state of the image display device. The control unit sets a display state of the image display device to a standby state; and when the standby state setting unit sets the standby state, a predetermined value is set around the object in the display image. A buffer area setting unit for setting a buffer area of a size of the object, and the object has moved out of the buffer area in response to an operation on the operating device. A movement determination unit for determining whether or not the object is moved out of the buffer area by the movement determination unit, and a standby state cancellation unit that cancels the standby state. .

Here, examples of the image display device include various displays such as liquid crystal, plasma, organic EL (Electroluminescence) and CRT (Cathode Ray Tube), and display devices such as a projector. Examples of the image output device include a playback device configured to play back a disk-type recording medium such as a PC (Personal Computer), a CD (Compact Disc), and a DVD (Digital Versatile Disc).
Further, the standby state is a state that is not a normal display state in which a normal image is displayed, and examples thereof include a power saving state in which image display is stopped and a standby state in which an image such as a screen saver is displayed. Can do.

According to the present invention, when the display state of the image display device is set to the standby state by the standby state setting unit, the buffer region setting unit sets a buffer region of a predetermined size around the object included in the display image. Is set. Then, according to the operation on the operation device, it is determined by the movement determination unit whether or not the object has moved out of the buffer area. If it is determined that the object has moved, the standby state canceling unit sets the display state of the image display device. The set standby state is released.
According to this, even when the object moves in response to the user's operation on the operation device, if the object does not move out of the buffer area set by the buffer area setting unit, the display state is set. The standby state is not released. Therefore, the standby state can be maintained when the object is moved to an extent that does not exceed the buffer area due to an operation on the operation device not intended by the user. Therefore, it is possible to maintain the standby state set as the display state of the image display device for unnecessary input operations to the operation device as described above. For example, when image display by the image display device is not performed Power saving can be achieved, and when an image such as a screen saver is displayed, image sticking or the like in the image forming area of the image display device can be suppressed.

In the present invention, it is preferable that the object is a pointer and the operation device is a pointing device.
Here, the pointer refers to a symbol that moves on the display image in accordance with an input operation on the operating device and performs selection and movement of other objects.
According to the present invention, even when a pointer with a high movement frequency moves on the display image by moving the pointing device or the like, the display state can be reliably maintained in the standby state. Therefore, the above-described effects of power saving and suppression of burn-in can be reliably achieved. In particular, since the pointing device often moves unintentionally by the user, by determining whether the pointer has moved out of the buffer area, it is possible to cancel the standby state according to the user's intention and Maintenance can be performed.

In the present invention, it is preferable that the buffer region is set in a substantially circular shape centered on the object.
According to the present invention, since the buffer area is set to a substantially circular shape centered on the object operated by the operating device, the movement range of the object can be moved regardless of the direction of movement of the object in the same direction. As long as does not exceed the radius of the buffer area, the standby state can be maintained. Therefore, even when the pointer moves slightly, the standby state can be reliably maintained regardless of the direction in which the pointer moves.

In the present invention, the image display device is configured to enter a power saving state when the image information is not input for a predetermined time, and the image output device is configured to display the display state of the image display device by the standby state setting unit. Is set to a standby state, it is preferable to include an information output unit that stops outputting the image information.
According to the present invention, when the display state of the image display device is set to the standby state by the standby state setting unit, the information output unit stops outputting the image information related to the display image, and accordingly, the image The display device enters a power saving state. According to this, since the power consumption of the image display device can be reduced if the display state is set to the standby state, the standby state is maintained for an unintended operation by the user as described above. With this configuration, it is possible to further reduce power consumption. Therefore, power saving of the entire image display system can be achieved.

  Further, the display control method of the present invention includes an image display device that displays an image corresponding to input image information, an image output device that outputs image information related to a display image including an object to the image display device, A display control method for controlling a display state of the image display device, used in an image display system including an operation device for operating the object on the display image, wherein the display state of the image display device is in a standby state. A standby state setting step for setting to a buffer area, a buffer area setting step for setting a buffer area of a predetermined size around the object in the display image, and determining whether or not the object has moved out of the buffer area When it is determined by the movement determination step and the movement determination step that the object has moved out of the buffer area, the standby state And having a standby state release step of releasing.

According to the present invention, the same effects as those of the above-described image display system can be obtained.
That is, when the display state of the image display device is set to the standby state in the standby state setting step, the buffer region is set around the object in the display image in the buffer region setting step. If it is determined in the movement determination step that the object has moved out of the buffer area, the standby state is canceled in the standby state cancellation step.
According to this, since the standby state is released when the object moves out of the buffer area, the standby state is not released when the object moves slightly due to an operation on the operation device. Therefore, when the object is moved by an operation unintended by the user with respect to the operation device, the standby state set as the display state of the image display device can be maintained.

  Further, the display control program of the present invention includes an image display device that displays an image corresponding to input image information, an image output device that outputs image information related to a display image including an object to the image display device, A display control program for controlling a display state of the image display device, executed by the image output device of an image display system including an operation device for operating the object on the display image, A standby state setting step for setting the display state to a standby state, a buffer region setting step for setting a buffer region of a predetermined size around the object in the display image, and whether the object has moved out of the buffer region The movement determination step for determining whether or not the object is moved out of the buffer area by the movement determination step. When the determined and characterized by having a standby state release step of releasing the stand-by state.

According to the present invention, it is possible to achieve the same effect as the display control method described above.
That is, the display control program of the present invention is executed by the image output device, and the object included in the display image is obtained by executing the standby state setting step, the buffer area setting step, the movement determination step, and the standby state cancellation step. When moving outside the buffer area, the standby state set as the display state of the image display device is canceled. According to this, when the object moves slightly, the object does not move out of the buffer area, so that the standby state of the image display device can be maintained. Therefore, even when an operation unintended by the user is performed on the operation device and the object moves slightly, the standby state of the image display device can be maintained.

The recording medium of the present invention is characterized in that the above-described display control program is recorded so as to be readable by a computer.
According to the present invention, the image output apparatus reads and executes the display control program recorded on the recording medium, whereby the same effect as that of the display control program described above can be obtained. As recording media, magnetic tapes such as DAT (Digital Audio Tape), magnetic disks such as FD (Flexible Disc), optical disks such as CD (Compact Disc) and DVD (Digital Versatile Disc), magneto-optical disks, hard disk devices, In addition, a semiconductor memory such as a ROM (Read Only Memory) and a flash memory can be used, and the display control program can be installed, executed, and distributed by using these.

  The image output device of the present invention is used in an image display system including an image display device that displays a display image including an object and an operation device that operates the object, and the image display device includes the image information. An image output device for controlling the display state of the image display device, wherein the control unit sets the display state of the image display device to a standby state; and When the display state is set to the standby state by the standby state setting unit, a buffer region setting unit that sets a buffer region of a predetermined size around the object in the display image, and the object is outside the buffer region A movement determination unit that determines whether or not the object has moved to the position, and the movement determination unit determines that the object has moved out of the buffer area. Characterized in that it comprises a standby state release unit for releasing the standby state.

According to the present invention, the same effects as those of the above-described image display system can be obtained.
That is, when the standby state setting unit sets the display state of the image display device to the standby state, the buffer region setting unit sets a buffer region around the object included in the display image. Then, the movement determination unit determines whether or not the object has moved out of the buffer area, and when it is determined that the object has moved, the standby state cancellation unit cancels the standby state.
According to this, when the object moves slightly, the standby state of the image display device can be maintained. Therefore, even when the object moves in response to an operation on the operation device that is not intended by the user, the standby state set as the display state of the image display device can be maintained as long as the object does not exceed the buffer area. it can.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Overall Configuration of Image Display System 1]
FIG. 1 is a diagram showing an overall configuration of an image display system 1 of the present embodiment.
The image display system 1 is a system that displays an image by the projector 4 projecting an image corresponding to the image information output from the PC 2 onto the screen SC.
This image display system 1 is an image output device and also an image display device, a PC 2, a mouse 3 as a pointing device connected to the PC 2, and a projector 4 connected to the PC 2 via a cable 5. It is configured with.

[Configuration of Projector 4]
Although the projector 4 corresponds to the image display device of the present invention and is not shown in detail, the projector 4 modulates a light source and a light beam emitted from the light source to form image light according to image information input from the PC 2. A light modulation device and a projection optical device that projects the image light onto the screen SC are configured.
Even if no image information is input from the PC 2, the projector 4 maintains the image display related to the image information input immediately before it within a predetermined time, but the state in which the image information is not input continues for a predetermined time or more. In such a case, the light-emitting luminance of the light source is lowered or the power-saving state such as turning off the light is entered. When the image information is input again, the projector 4 transitions to a normal display state such as returning the light emission luminance of the light source.

The light source that constitutes such a projector 4 can be constituted by a discharge light source lamp such as a high-pressure mercury lamp or a light emitting element such as an LED (Light Emitting Diode). In addition to the liquid crystal light valve, the light modulation device may be a light modulation device other than liquid crystal, such as a device using a micromirror.
In this embodiment, the projector 4 is provided as an image display device. However, the image display device may be configured by a display such as liquid crystal, plasma, organic EL (Electroluminescence), and CRT (Cathode Ray Tube).

[Configuration of PC2]
FIG. 2 is a block diagram showing the configuration of the PC 2.
In this embodiment, the PC 2 is configured as a notebook PC, and executes predetermined processing in accordance with a user input operation to the mouse 3 connected to the PC 2 and the keyboard 22 provided in the PC 2. Then, the PC 2 outputs the image information related to the display image indicating the processing result to the projector 4 and the display means 21 provided in the PC 2, and displays the image related to the image information by the projector 4 and the display means 21. Let
As shown in FIG. 2, the PC 2 includes a display unit 21, a keyboard 22, a signal input unit 23, a storage unit 24, a control unit 25, a memory 27, and a housing (not shown) that houses these. Configured.

FIG. 3 is a diagram illustrating an image displayed by the display unit 21 and is a diagram illustrating a display state of the display unit 21 when the normal display state is switched to the standby state. FIG. 4 is a diagram showing a display state of the display means 21 when the standby state is switched to the normal display state.
The display means 21 corresponds to the image display device of the present invention as in the case of the projector 4 described above and is not shown in detail, but includes a liquid crystal panel, a backlight, and a driver for driving the liquid crystal panel. The display image S shown in the normal display state of FIG. 4, that is, the display image S corresponding to the image information input from the control means 25 described later is displayed. Such a display image S includes a window region corresponding to the application, a content region CA that is a window region such as a dialog used for displaying an error message and confirming an operation, and the like on the display image S. A pointer P which is a symbol for moving and selecting and moving the content area CA is included. The display image S displayed by the display unit 21 is the same image as the display image S formed and projected by the projector 4.

  Similar to the projector 4, the display means 21 maintains the display of the display image S related to the image information input immediately before it within a predetermined time even when no image information is input, as shown in FIG. When the image information is not input to the driver from the control means 25 for a predetermined time or more, the power saving state in which the backlight is turned off and the image formation by the liquid crystal panel is stopped from the normal display state in which the display image S is formed and displayed. Transition to. When image information is input from the control means 25 to the power saving state display means 21, as shown in FIG. 4, from the power saving state, the backlight is turned on and displayed according to the input image information. Transition to a normal display state in which the image S is formed and displayed.

Returning to FIG. 2, the keyboard 22 includes a plurality of keys, and outputs an operation signal corresponding to the key input by the user to the signal input unit 23.
The signal input means 23 converts an operation signal input from the keyboard 22 and the mouse 3 as an operation device into a digital signal that can be internally processed, and outputs the digitally converted operation signal to the control means 25.

In this embodiment, the storage unit 24 is configured by an HDD (Hard Disk Drive) or the like, and stores various programs and data necessary for processing by the control unit 25. As such a program, the storage means 24 can include, for example, an OS (Operation System) that controls the entire PC 2, a display control program used for a display control process described later, and the like.
In the present embodiment, the storage unit 24 includes an HDD, but information recorded on a semiconductor element such as a flash memory or a recording medium such as a CD (Compact Disc) and a DVD (Digital Versatile Disc) is stored. You may comprise by the drive etc. which were comprised so that reading was possible.
The memory 27 is used as a work memory for temporarily storing data in processing by the control unit 25, and is also used as an image forming area in which image information related to an image for one screen is generated by the control unit 25. .

[Configuration of Control Unit 25]
FIG. 5 is a block diagram showing the configuration of the control means 25.
The control means 25 is constituted by a CPU (Central Processing Unit) or the like, and controls driving of the entire PC 2. Specifically, the control unit 25 reads out the OS stored in the storage unit 24 and controls the driving of the entire PC 2, and also reads out the display control program stored in the storage unit 24 to perform display control processing described later. The display unit 21 and the display state of the projector 4 are controlled.
As shown in FIG. 5, the control means 25 includes a position acquisition unit 251, a signal determination unit 252, a movement unit 253, a state determination unit 254, an information output unit 255, a timer 256, a standby state setting unit 257, a buffer area. A setting unit 258, a movement trajectory acquisition unit 259, a movement determination unit 260, a standby state release unit 261, and a timer reset unit 262 are provided.

  The position acquisition unit 251 acquires the coordinate position of the object in the display image S formed on the memory 27. Specifically, the position acquisition unit 251 acquires the X coordinate in the horizontal direction and the Y coordinate in the vertical direction with the upper left in the display image S as the origin for each object. At this time, in the case of the pointer P, the position acquisition unit 251 acquires the XY coordinates of the position indicated by the pointer P, and in the case of the content area CA, the upper left XY coordinate and the lower right XY coordinate of the content area CA. Get each.

  The signal determination unit 252 determines the content of the operation signal input from the signal input unit 23 and causes the control unit 25 to execute processing according to the operation signal. For example, the signal determination unit 252 determines whether or not the input operation signal includes an operation signal for moving the pointer P and the content area CA that are objects included in the image displayed by the display unit 21 and the projector 4. To do.

  The moving unit 253 moves the pointer P on the display image S according to the operation of the mouse 3 when the signal determining unit 252 determines that the operation signal when the mouse 3 is operated is input. At this time, when the key provided on the mouse 3 is input and the mouse 3 is moved while the content area CA is selected (when the content area CA is dragged), the moving unit 253 displays the pointer. In addition to P, the content area CA is also moved.

The state determination unit 254 determines the currently set display state. Specifically, the state determination unit 254 determines whether the display state of the display unit 21 and the projector 4 is set to a standby state by a standby state setting unit 257 described later, or the standby state is released by the standby state canceling unit 261. It is released and it is determined whether the normal display state is set.
When the state determination unit 254 determines that the display state is set to the normal display state, the information output unit 255 displays image information related to the display image S formed on the memory 27 on the display unit 21 and the projector 4. Output. In the present embodiment, the information output unit 255 stops outputting the image information related to the display image S to the display unit 21 and the projector 4 when the display state is set to the standby state. Image information related to a predetermined image such as a set screen saver may be output.

The timer 256 measures the time after the operation signal is not input from the mouse 3 and the keyboard 22 via the signal input means 23. Specifically, the timer 256 executes a countdown from a preset time.
The standby state setting unit 257 monitors the timer 256, and sets the display state to the standby state when the timer 256 reaches the time-up time. As a result, the output of the image information by the information output unit 255 is stopped, and no image information is input to the display unit 21 and the projector 4, so that the display unit 21 and the projector 4 transition to the power saving state.

FIG. 6 is a diagram showing the buffer area BA set in the display image S. As shown in FIG.
The buffer area setting unit 258 sets the buffer area BA around the current pointer P in the display image S formed on the memory 27 when the display state is set to the standby state by the standby state setting unit 257.
Specifically, as shown in FIG. 6, the buffer area setting unit 258 is a circle having a predetermined radius with the XY coordinate of the pointer P acquired by the position acquisition unit 251 (the XY coordinate indicated by the pointer P) as the center. A buffer region of a shape is set on the display image S. The buffer area BA is a virtual area on the memory 27 and is not included as a display item in the display image S.

  Returning to FIG. 5, the movement trajectory acquisition unit 259 acquires the movement trajectory of the pointer P according to the movement amount of the mouse 3 within a predetermined time. For example, this movement trajectory can be a movement trajectory of the continuous pointer P after the buffer area BA is newly set by the buffer area setting unit 258.

FIG. 7 shows the pointer P that has passed through the buffer area BA.
As illustrated in FIG. 7, the movement determination unit 260 determines whether the pointer P has moved out of the buffer area BA based on the movement locus of the pointer P acquired by the movement locus acquisition unit 259.
Returning to FIG. 5, when the movement determination unit 260 determines that the pointer P has moved out of the buffer area BA, the standby state cancellation unit 261 sets the standby state set as the display state of the display unit 21 and the projector 4. Is canceled and the display state is set to the normal display state.
When the standby state is canceled by the standby state canceling unit 261, the timer reset unit 262 resets the timer 256 and restarts the countdown from the set time by the timer 256.

[Display control processing]
Hereinafter, display control processing executed by the control means 25 of the PC 2 will be described.
FIG. 8 is a flowchart showing a process of a standby state setting process that is one process of the display control process.
In the display control process, the control unit 25 of the PC 2 reads the display control program stored in the storage unit 24 and switches the output state of the image information according to the display control program, whereby the display unit 21 and the projector 4 are switched. Is a process for controlling the display state by the above, and is always executed while the PC 2 is being driven. This display control process includes a standby state setting process ST1 shown in FIG. 8, a buffer area setting process ST2 shown in FIG. 9, and a standby state releasing process ST3 shown in FIG.

The standby state setting process ST1 is a process for setting the display state to the standby state and stopping the output of the image information by the information output unit 255 when the operation signal is not input and the timer 256 reaches the time-up time. Thus, the display means 21 and the projector 4 are set to the power saving state.
In this standby state setting process ST1, as shown in FIG. 8, first, the timer 256 determines whether or not the time being counted down from the set time has reached the time up time (timer determination step ST11). If the time-up time has not been reached, the currently set display state (normal display state) is maintained, and the timer 256 continues to count down.

On the other hand, when the timer 256 reaches the time-up time, the standby state setting unit 257 sets the display state of the display means 21 and the projector 4 to the standby state (step ST12). Thereby, the output of image information to the display unit 21 and the projector 4 by the information output unit 255 is stopped, and the display unit 21 and the projector 4 shift to the power saving state.
After this step ST12, the control means 25 executes a buffer area setting process ST2.

FIG. 9 is a flowchart showing the process of the buffer area setting process ST2.
The buffer area setting process ST2 is a process for setting the buffer area BA around the coordinates indicated by the current pointer P on the display image S.
In the buffer area setting process ST2, first, the position acquisition unit 251 acquires the coordinates indicated by the current pointer P (position acquisition step ST21).
Thereafter, the buffer area setting unit 258 sets a substantially circular buffer area BA having a predetermined radius around the coordinates indicated by the acquired pointer P on the memory 27 (step ST22).
As described above, the buffer area setting process ST2 ends, and the standby state setting process ends accordingly.

FIG. 10 is a flowchart showing the process of the standby state cancellation process ST3.
The standby state release processing ST3 releases the standby state when the display state is set to the standby state when an operation signal is input from the mouse 3 and the keyboard 22 via the signal input unit 23. This is a process of changing to the normal display state and restarting the output of the image information related to the current display image S by the information output unit 255.
In this standby state release processing ST3, as shown in FIG. 10, first, the signal determination unit 252 determines whether or not an operation signal is input from the mouse 3 and the keyboard 22 via the signal input means 23 (signal input). Determination step ST31). Here, when the signal determination unit 252 determines that the operation signal is not input, the signal determination unit 252 continuously monitors the operation signal.

On the other hand, when the signal determination unit 252 determines that an operation signal has been input, the state determination unit 254 determines whether the currently set display state is a standby state or a normal display state. Determination (state determination step ST32).
Here, when the state determination unit 254 determines that the currently set display state is not the standby state, that is, when it is determined that the display state is the normal display state, the control unit 25 proceeds to step ST38. .

On the other hand, when the state determination unit 254 determines that the currently set display state is a standby state, the signal determination unit 252 is an operation signal derived from an operation on the mouse 3. Or an operation signal derived from an operation on the keyboard 22 (signal determination step ST33).
If the signal determination unit 252 determines that the operation signal is not derived from an operation on the mouse 3, that is, if it is determined that the operation signal is derived from an operation on the keyboard 22, the process proceeds to step ST37. .

In the determination process in step ST33, when the signal determination unit 252 determines that the operation signal is derived from an operation on the mouse 3, the signal determination unit 252 moves the pointer P. It is determined whether or not the operation signal is to be transmitted (signal type determination step ST34).
Here, when the signal determination unit 252 determines that the operation signal is not an operation signal for moving the pointer P, for example, when it is determined that the operation signal is related only to the click operation, the control unit 25 proceeds to step ST37. To do.

On the other hand, when the signal determination unit 252 determines that the operation signal is to move the pointer P, the movement trajectory acquisition unit 259 acquires a movement trajectory of the pointer P that is continuous within a predetermined time (movement trajectory acquisition step). ST35).
Thereafter, the movement determination unit 260 determines whether or not the pointer P has moved outside the buffer area BA based on the acquired movement locus of the pointer P (movement determination step ST36).

Here, when the movement determination unit 260 determines that the pointer P has not moved outside the buffer area BA, the buffer area setting process ST2 described above is executed again. As a result, a buffer area BA centering on the position indicated by the current pointer P is newly set. Thereafter, the control means 25 once ends the standby state cancellation process ST3, and step ST31 is again executed by the signal determination unit 252.
In the determination process in step ST36, when the movement determination unit 260 determines that the pointer P has moved out of the buffer area BA, the control unit 25 proceeds to step ST37.

In step ST37, the standby state canceling unit 261 cancels the standby state set by the standby state setting unit 257 as the display state, and transitions the display state to the normal display state (standby state canceling step ST37). Thereby, the output of the image information related to the display image S by the information output unit 255 is resumed, and an image corresponding to the image information is displayed by the display unit 21 and the projector 4. Thereafter, the control means 25 executes Step ST38.
In step ST38, the timer reset unit 262 resets the timer 256, and the countdown from the set time by the timer 256 is restarted (timer reset step ST38).
As described above, the standby state setting process ends. When the timer 256 reset in step ST38 reaches the time-up time, the display state is set to the standby state by the above-described standby state setting process ST1.

According to the image display system 1 of the present embodiment as described above, the following effects can be obtained.
That is, when the input operation to the mouse 3 and the keyboard 22 as the operation device is not performed for a predetermined time and the timer 256 reaches the time-up time, the standby state setting unit 257 sets the display state to the standby state in the standby state setting step ST12. Set to. At this time, the buffer area setting unit 258 sets a buffer area BA around the pointer P, which is an object, in the buffer area setting step ST22. Then, according to the user's operation on the mouse 3, whether or not the pointer P has moved out of the buffer area BA is determined by the movement determination unit 260 in the movement determination step ST36. The standby state release unit 261 releases the standby state in standby state release step ST37.

  According to this, even when the user touches the mouse 3 and the user moves the mouse 3 unintentionally and the pointer P moves accordingly, the surroundings of the pointer P As long as the pointer P does not move outside the buffer area BA set to, the standby state is maintained. Further, when the user intentionally operates the mouse 3 and operates the pointer P so as to move it outside the buffer area BA, the standby state is released, so that the image information related to the display image S is output as information. The display image S can be displayed by being output to the display means 21 and the projector 4 by the unit 255. Therefore, when the pointer P moves against the user's intention, the standby state can be maintained.

The buffer area BA is set around the pointer P operated by the mouse 3. According to this, the buffer area BA is set around the pointer P having a higher movement frequency than the content area CA on the display image S, whereby the movement locus of the pointer P is determined, whereby the user Can be determined whether the operation is an intended operation or an unintended operation. When the user intentionally moves the pointer P out of the buffer area BA, the standby state can be canceled, and the pointer P is moved slightly unintentionally. Since the pointer P does not move outside the buffer area BA, the standby state can be reliably maintained. Therefore, the standby state can be set and canceled according to the user's intention.
In addition, depending on the OS, when the operation such as selection and movement of the content area CA is performed by operating the mouse 3, the operation of the pointer P is necessary. When the pointer P is moved by an operation that is not a canceling operation, the standby state can be reliably maintained.

  The buffer area BA is set in a circular shape having a predetermined radius with the coordinates indicated by the pointer P as the center. According to this, even if the pointer P moves in any direction, the standby state is maintained unless the pointer P moves beyond the same distance (radius of the buffer area BA) and moves outside the buffer area BA. Can do. Therefore, the standby state can be reliably maintained regardless of the direction in which the mouse 3 as the operation device is operated. Therefore, when the user moves the mouse 3 unintentionally, the standby state can be more reliably maintained.

  If no image information is input from the information output unit 255 of the control unit 25 for a predetermined time, the power of the display unit 21 is turned off, and the projector 4 is configured to be in a power saving state that reduces the light emission luminance of the light source. ing. Then, when the display state is set to the standby state, the information output unit 255 stops outputting the image information to the display unit 21 and the projector 4. According to this, since the power consumption of the display means 21 and the projector 4 can be suppressed when the standby state is set, as described above, the mouse 3 is operated unintentionally by the user. Even when the pointer P moves, the power consumption can be further reduced by the configuration in which the standby state is maintained. Therefore, power saving of the PC 2 and the projector 4 can be achieved, and as a result, power saving of the entire image display system 1 can be achieved.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the embodiment, the projector 4 connected to the PC 2 via the cable 5 and the display unit 21 provided in the PC 2 are exemplified as the image display device. However, the present invention is not limited thereto, and the display unit is not limited thereto. At least one of the projector 21 and the projector 4 is sufficient. Further, the display means 21 may be independent of the PC 2 without being composed of a notebook PC.

  In the above embodiment, when the pointer P, which is an object, moves outside the buffer area BA, the display state is changed from the standby state to the normal display state. However, the present invention is not limited to this. That is, as long as the object exists on the display image S and can be moved by the operation of the mouse 3 and the keyboard 22, the type of the object is not limited. For example, the content area CA may be cited as a corresponding object.

  In the above embodiment, when the click operation on the mouse 3 is performed, the standby state canceling unit 261 cancels the standby state set as the display state. However, the present invention is not limited to this, and the click operation is performed. Even if it is performed, the standby state may be maintained as long as the pointer P does not move outside the buffer area BA.

  In the embodiment, the display unit 21 and the projector 4 are set to the power saving state when no image information is input for a predetermined time, and the information output unit 255 is set to the display state by the standby state setting unit 257. Although the output of the image information related to the display image S to the display unit 21 and the projector 4 is stopped when the standby state is set, the present invention is not limited to this. For example, when the display state is set to the standby state, the PC 2 that is the image output device may be configured to directly turn off the power of the display unit 21 and the projector 4. Further, when the standby state is set, as described above, the information output unit 255 of the PC 2 may output image information related to an image such as a screen saver.

  In the above embodiment, the buffer area setting unit 258 sets the circular buffer area BA centered on the coordinates indicated by the pointer P in the display image S, but the present invention is not limited to this. That is, the shape of the buffer area BA does not matter. For example, the buffer area setting unit 258 may be configured to set a rectangular buffer area BA.

In the above-described embodiment, the front type projector 4 that performs projection from the direction in which the screen SC is observed is exemplified as one image display device. However, the present invention is not limited to this, and the opposite side to the direction in which the screen SC is observed. It can also be used in rear type projectors that project from the beginning. In addition, as described above, the light modulation device employed in such a projector can be employed in a light modulation device having liquid crystal or a light modulation device other than liquid crystal.
Furthermore, the image display system of this invention is good also as a structure provided with displays, such as a liquid crystal, plasma, organic EL, and CRT, as an image display apparatus, for example.

  In the embodiment, the PC 2 is exemplified as the image output device. However, the present invention is not limited to this, and for example, a device capable of outputting image information related to a menu screen such as OSD may be employed. An example of such a device is a playback device that plays back image information recorded on a disk-type recording medium such as a CD or DVD.

  In the above-described embodiment, the display control program is stored in the storage unit 24 configured by the HDD, and is read by the control unit 25 so that the above-described display control process is performed. However, the present invention is not limited to this. . For example, display control programs include magnetic tapes such as DAT (Digital Audio Tape), magneto-optical disks, optical disks such as CD (Compact Disc) and DVD (Digital Versatile Disc), magnetic disks, and semiconductors such as ROM and flash memory. You may comprise so that it may memorize | store in recording media, such as memory, and may be read as needed. That is, the recording form of the program does not matter.

  The present invention can be used in an image display system, for example, an image output device such as a PC, an image display device such as various displays and projectors for displaying images according to image information output by the image output device, The present invention can be suitably used for an image display system including an operation device such as a pointing device that operates an object included in an image.

The figure which shows the structure of the image display system which concerns on one Embodiment of this invention. The block diagram which shows the structure of PC in the said embodiment. The figure which shows the display state of the display means at the time of switching from the normal display state in the said embodiment to a standby state. The figure which shows the display state of the display means at the time of switching from the standby state in the said embodiment to a normal display state. The block diagram which shows the structure of the control means in the said embodiment. The figure which shows the buffer area | region set in the display image in the said embodiment. The figure which shows the pointer P which passed the buffer area | region in the said embodiment. The flowchart which shows the process of the standby state setting process in the said embodiment. The flowchart which shows the process of the buffer area | region setting process in the said embodiment. The flowchart which shows the process of the standby state cancellation | release process in the said embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Image display system, 2 ... PC (image output device), 3 ... Mouse (operating device, pointing device), 4 ... Projector (image display device), 21 ... Display means (image display device), 25 ... Control means, 255 ... Information output unit, 257 ... Standby state setting unit, 258 ... Buffer region setting unit, 260 ... Movement determination unit, 261 ... Standby state release unit, BA ... Buffer region, P ... Pointer (object), S ... Display image, ST12 ... standby state setting step, ST22 ... buffer area setting step, ST36 ... movement determination step, ST37 ... standby state release step.

Claims (8)

An image display device that displays an image according to input image information, an image output device that outputs image information related to a display image including the object to the image display device, and the object on the display image An image display system including an operation device,
The image output device includes control means for controlling a display state by the image display device,
The control means includes
A standby state setting unit for setting the display state of the image display device to a standby state;
When the standby state setting unit sets the standby state, a buffer region setting unit that sets a buffer region of a predetermined size around the object in the display image;
A movement determination unit that determines whether or not the object has moved out of the buffer area in response to an operation on the operation device;
An image display system comprising: a standby state canceling unit that cancels the standby state when the movement determining unit determines that the object has moved out of the buffer area. The image display system according to claim 1,
The object is a pointer;
The image display system, wherein the operation device is a pointing device. The image display system according to claim 1 or 2,
The image display system, wherein the buffer area is set in a substantially circular shape centered on the object. The image display system according to any one of claims 1 to 3,
The image display device includes:
If the image information is not input for a predetermined time, it is configured to be in a power saving state,
The image output device includes:
An image display system comprising: an information output unit that stops outputting the image information when the display state of the image display device is set to a standby state by the standby state setting unit. An image display device that displays an image according to input image information, an image output device that outputs image information related to a display image including the object to the image display device, and the object on the display image A display control method for controlling a display state of the image display device, which is used in an image display system including an operation device,
A standby state setting step of setting the display state of the image display device to a standby state;
A buffer area setting step for setting a buffer area of a predetermined size around the object in the display image;
A movement determination step of determining whether or not the object has moved out of the buffer area;
A display control method comprising: a standby state cancellation step of canceling the standby state when it is determined in the movement determination step that the object has moved out of the buffer area. An image display device that displays an image according to input image information, an image output device that outputs image information related to a display image including the object to the image display device, and the object on the display image A display control program that is executed by the image output device of an image display system including an operation device and controls a display state of the image display device,
A standby state setting step of setting the display state of the image display device to a standby state;
A buffer area setting step for setting a buffer area of a predetermined size around the object in the display image;
A movement determination step of determining whether or not the object has moved out of the buffer area;
A display control program comprising: a standby state cancellation step of canceling the standby state when it is determined in the movement determination step that the object has moved out of the buffer area.   7. A recording medium in which the display control program according to claim 6 is recorded so as to be readable by a computer. An image output device that is used in an image display system including an image display device that displays a display image including an object and an operation device that operates the object, and that outputs the image information to the image display device,
Control means for controlling the display state of the image display device;
The control means includes
A standby state setting unit for setting the display state of the image display device to a standby state;
When the display state is set to the standby state by the standby state setting unit, a buffer region setting unit that sets a buffer region of a predetermined size around the object in the display image;
A movement determination unit that determines whether or not the object has moved out of the buffer area;
An image output apparatus comprising: a standby state canceling unit that cancels the standby state when the movement determining unit determines that the object has moved out of the buffer area.

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