JP2007071901A - Image display device, image display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability of zoom display by reducing the possibility that a zoom mode is canceled with respect to user's intentions, when an image display device performs reduction processing for an enlarged screen. <P>SOLUTION: When the size of a display image which is reduced for display is smaller than a display image size before a zoom mode is transited to the zoom mode, wherein a portion of a display image is enlarged or reduced for display, the display image before the zoom mode is transited is displayed; and when reduction display is performed again in the display state, the zoom mode is canceled. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display apparatus that enlarges or reduces a part of a display image.

  In recent years, conferences and presentations using displays have been actively carried out with the increase in screen size and multifunctionality of displays such as plasma displays, liquid crystal displays, and rear projection displays. In this case, various data such as sentences, tables, and presentations created using application software in a personal computer are displayed on a display connected to a video output terminal of the personal computer.

  In these displays, pointers and laser pointers are generally used to indicate the position on the display screen. Recently, however, the coordinates on the display screen are indicated by a finger or a pen. A display having a digitizer that can be directly indicated by means has been developed.

  The digitizer includes a pressure sensor inside the display screen of the apparatus to detect the pressure when a pen touches, and an electromagnetic that uses a pen that generates a magnetic field to detect the magnetic field by a sensor inside the display screen. Guidance method, ultrasonic surface acoustic wave method that detects the position of an object on the screen by placing an ultrasonic transmitter and ultrasonic sensor on the frame of the display screen, etc. An infrared method for receiving by a sensor inside the display device has been invented.

  Regardless of the method, the instruction information can be given to the personal computer by transmitting and receiving the instruction information between the digitizer and the personal computer, so that the personal computer can be operated intuitively. As a result, it is possible to display a cursor at the designated position or to overwrite characters, graphics, etc. on the image.

  Functions realized in a display having a digitizer include a function of enlarging and displaying a part of a display image in addition to cursor display on a display screen and overwriting of characters and graphics.

  When the start point and the end point are instructed using an instruction means such as a pen and a rectangular area surrounded by the start point and the end point is enlarged and displayed on the entire screen, the area to be enlarged can be designated intuitively.

  In general, a display having a function for enlarging and displaying a part of a display image includes a state (zoom mode) in which a part of the display image can be set to be enlarged or reduced and a non-zoom mode. Yes.

  This is because the display form on the display screen is changed for each mode, or the function of the operation button is changed to a different content for each mode. Examples are given below.

  For example, in patent document 1, the display mode of a display screen is changed by both by providing zoom mode and non-zoom mode. As a result, it is possible to make a difference between the display forms of the enlarged display area and the other display areas, and the viewer and the operator can easily recognize the enlarged display area.

  Further, for example, in Patent Document 2, in order to enlarge or reduce a desired portion of an image with a limited number of operation keys of a mobile terminal device, for example, the function of a cross key (up / down / left / right key) is switched for each mode. It is characterized by being used.

On the other hand, when shifting from the zoom mode to the non-zoom mode, that is, when releasing the zoom mode, as a method, the zoom mode is canceled when the enlargement ratio becomes 1 by repeating the reduction process on the enlarged screen. There is a way to do it. The enlargement ratio is a ratio between the display image size in the non-zoom mode and the display image size after the enlargement display, and is a magnification when the display image size in the non-zoom mode is set to 1.
JP 2001-125550 A JP 2004-235805 A

  However, in the method of canceling the zoom mode when the enlargement ratio becomes 1 time, there is a problem that the zoom mode is canceled against the user's intention when the user performs the reduction process on the enlarged screen. It was.

  The present invention has been made in view of the above problems, and reduces the possibility that the zoom mode is canceled against the user's intention when the reduction process is performed on the enlarged screen, and the zoom display operation. The purpose is to improve the performance.

  An image display apparatus according to the present invention for solving the above-described problem includes a zoom unit that displays a part of a display image in an enlarged or reduced display, and the zoom unit is configured to perform an enlarged display or a reduced display. An image display apparatus having a possible zoom mode, wherein in the zoom mode, when the display image size reduced and displayed by the zoom means is smaller than the display image size before the shift to the zoom mode, the zoom The zoom mode is canceled when a display state of displaying a display image before shifting to the mode is displayed, and when the reduced display is performed again by the zoom means in the display state.

  The image display device of the present invention can reduce the possibility that the zoom mode is canceled against the user's intention when the reduction process is performed on the enlarged screen, and can improve the operability of the zoom display. It becomes.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram for explaining an image display apparatus according to a first embodiment of the present invention. An image in a designated area 102 is enlarged with respect to the display screen 101 shown in FIG. A display screen 101 at the time of display is shown in FIG. The detailed display screen 101 will be described later with reference to FIGS.

  In the image display device 100, infrared rays are transmitted from digitizer modules (coordinate input means for inputting position information on the screen) 103 and 104 installed on the left and right of the upper part of the display screen 101 to scan the surface of the screen.

  If there is an obstacle on the screen, the transmitted infrared rays are blocked and the level of the received signal changes, so that the position and size of the obstacle can be detected from the change. For example, when a predetermined position on the screen is instructed using an instruction means such as a finger or a pen, the position can be detected. Furthermore, by designating the start point and end point, a rectangular area surrounded by the start point and end point can be detected.

  The image display apparatus 100 also includes operation buttons 105 for the user to perform power on / off, volume adjustment, channel switching, and the like, and each process is executed when any button is pressed.

  One of the operation buttons 105 includes a zoom button for switching between a state in which a part of the display image can be enlarged or reduced (“zoom mode”) and “non-zoom mode”. . That is, it is a button for turning on / off the “zoom mode”.

  “Zoom mode” has two modes (“zoom mode 1” and “zoom mode 2”), and when the displayed image is enlarged and displayed at a magnification larger than 1 times, “zoom mode 1” is selected. When the display image is displayed at a magnification of 1 ×, “zoom mode 2” is held. The enlargement ratio is a ratio between the display image size in the “non-zoom mode” and the image size after the enlargement display, and is a magnification when the display image size in the “non-zoom mode” is set to 1.

  In each of the “non-zoom mode”, “zoom mode 1”, and “zoom mode 2” modes, display images and processing contents are different.

  Hereinafter, differences in display images in the three modes will be described with reference to FIGS.

  FIG. 2 shows the display screen 101 in “non-zoom mode”, and FIG. 3 shows the display screen 101 in “zoom mode 1”.

  On the display screen 101 of “zoom mode 1”, an image in which a part of the display image of “non-zoom mode” is enlarged is displayed, a zoom window 201, a vertical slicer 202, a vertical scroll bar 203, a horizontal slicer 204, and a horizontal scroll. A bar 205 and a reduction screen 206 are displayed.

  The zoom window 201 includes a zoom-up icon 208, a zoom-down icon 209, and an area designation icon 210. Each process is performed by pressing these icons using an instruction means such as a finger or a pen.

  When the zoom-up icon 208 is pressed, an enlarged display is performed at a constant magnification with the center point of the display screen 101 as a reference, and when the zoom-down icon 209 is pressed, a reduced display is performed at a constant magnification with the center point of the display screen 101 as a reference. Do.

  If the area is designated after the area designation icon 210 is pressed, the designated area is enlarged and displayed. As described above, the method of specifying the area treats the rectangular area surrounded by the start point and end point by specifying the start point and end point by the instruction means, but at this time, the aspect ratio of the display screen And the end point of the rectangle is automatically corrected so that the aspect ratio of the specified area is equal.

  Although the end point of the rectangle is automatically corrected here, the start point of the rectangle may be corrected. Even if the area designating icon 210 is pressed after designating the area, the designated area can be enlarged and displayed.

  The reduction screen 206 is a screen in which the display image in the “non-zoom mode” is reduced and displayed so that the positional relationship of the enlargement display area 207 in the display image in the “non-zoom mode” can be visually understood. is there. Therefore, on the reduced screen 206, the enlarged display area 207 is surrounded by a solid line. Any display method may be used as long as the positional relationship of the enlarged display area 207 in the display image in the “non-zoom mode” can be visually understood. For example, the difference in brightness between the enlarged display area 207 and the other display areas is determined. You may put it on.

  The vertical scroll bar 203 is a size with respect to the vertical slicer 202 and indicates an enlargement ratio in the vertical direction, and is a position with respect to the vertical slicer 202 and indicates position information in the display image in the “non-zoom mode”.

  The horizontal scroll bar 205 indicates the horizontal enlargement ratio in size with respect to the horizontal slicer 204, and indicates position information in the display image in the “non-zoom mode” at a position relative to the horizontal slicer 202.

  Further, the vertical slicer 202, the vertical scroll bar 203, the horizontal slicer 204, the horizontal scroll bar 205, and the reduced screen 206 are not necessarily displayed, and any one of them may be displayed.

  On the other hand, FIG. 4 shows a display screen 101 in the “zoom mode 2”.

  On the display screen 101 in the “zoom mode 2”, a display image with a magnification of 1 × and a zoom window 201 are displayed.

  Since the enlargement factor is 1, it is not necessary to perform additional display so that the enlargement factor and positional relationship can be visually understood as in “zoom mode 1”, but the zoom window 201 can be used to re-enlarge the display image. Display and reduction display can be performed.

  FIG. 5 is a block diagram showing a schematic configuration of the image display apparatus and the information processing apparatus according to the first embodiment of the present invention, in which 300 is a personal computer as the information processing apparatus, 100 is an image display apparatus, and video The cable 500 and the communication cable 600 are connected.

  The personal computer 300 includes a CPU 301 that controls the entire process and executes various processes, a ROM 304 that stores programs executed by the CPU 301, a RAM 303 that stores data used by the CPU 301, a keyboard interface 302, a mouse interface 305, A drawing signal processing unit 306 and a display output interface 307 are connected to each other via a system bus 308.

  Normally, a coordinate input device such as a mouse is connected to the mouse interface 305, and coordinate information for controlling display of a pointer on the personal computer screen is supplied to the CPU 301. When a click signal is detected, a command signal is supplied. To the CPU 301. It connects with the mouse interface 406 of the image display apparatus 100 via the communication cable 600. A keyboard is usually connected to the keyboard interface 105 and input information is supplied to the CPU 301.

  The CPU 301 performs processing such as recording and reading of data with respect to the ROM 304 and the RAM 303, for example, according to coordinate information and commands input by a coordinate input device or a keyboard. The data recorded in the RAM 303 is read by the drawing signal processing unit 306 to generate an image signal, and is output to the image display device 100 via the display output interface 307.

  The image display apparatus 100 includes a display input interface 402, an image display block 401, a system controller 407, an instruction information detection unit 408, a mouse interface 406, and an operation button input unit 409. The image display block 401 includes an image processing unit 403, an additional display generation unit 405, and a display device 404.

  In the above configuration, the image signal output from the personal computer 300 is input to the image processing unit 403 via the video cable 500 and the display input interface 402.

  The image processing unit 403 performs processing such as optimization of an input image signal capturing position into an image memory (not shown) and optimization of the resolution of the input image signal to the resolution of the display device 404. Is displayed. Here, the system controller 407 performs control relating to processing such as optimization of the input image signal capturing position and optimization of the resolution of the display device 404.

  The additional display generation unit 405 generates a desired image under the control of the system controller 407, and the image processing unit 403 combines it with the input image signal for display.

  The system controller 407 receives signals from the instruction information detection unit 408 and the operation button input unit 409, and performs control corresponding to each function. Also, the mouse interface 406 outputs instruction information 800 by the digitizer detected by the instruction information detection unit 408 to the personal computer 300 under the control of the system controller 407.

  In the personal computer 300, the received instruction information 800 is handled in the same manner as the coordinate information by the mouse, and operation of application software or the like operating on the personal computer 300 is enabled.

  Here, when the zoom mode is set by the operation button input unit 409, the additional display generation unit 405 generates a display image in which the zoom window 201, the enlargement ratio, and the positional relationship can be visually understood according to the mode. In addition, the image processing unit 403 enlarges or reduces a part of the display image based on the instruction information 800 by the digitizer detected by the instruction information detection unit 408 and combines it with the display image generated by the additional display generation unit 405. And display.

  FIG. 6 is a processing flowchart when the display image is enlarged or reduced in the image display apparatus according to the first embodiment of the present invention.

  First, in step S101, it is determined whether or not the zoom button in the operation button 105 has been pressed. If the zoom button has been pressed, the process proceeds to step S102, where the current mode is “zoom mode” (“zoom”). It is determined whether or not “mode 1” or “zoom mode 2”).

  If the result of determination in step S102 is “zoom mode” (“zoom mode 1” or “zoom mode 2”), the setting is changed to “non-zoom mode” in steps S103 and S104. Then, the image is displayed according to the display screen of “non-zoom mode” (see FIG. 2).

  On the other hand, if the result of determination in step S102 is “non-zoom mode”, “zoom mode 2” is set in step S105, and then the “zoom mode 2” display screen is displayed in step S106 (see FIG. 4). , The image is displayed. Thereafter, in step S108, step S109, step S110, or step S101, it is determined that any one of the zoom-up icon 208, the zoom-down icon 209, the region designation icon 210, or the zoom button is pressed.

  As a result of the determination in step S110, if the area designation icon 210 is pressed, the process waits in step S118 until the area designation by the instruction means is performed.

  As a result of the determination in step S118, if an area is designated, the area designated in step S119 is enlarged. After that, in step S120, the setting is changed to “zoom mode 1”, and the image after the enlargement process, the scroll bar, the slicer, and the like are displayed in step S121 in accordance with the “zoom mode 1” display screen (see FIG. 3). The reduced screen is displayed and updated.

  Here, the area designation by the instruction means is performed after the area designation icon 210 is pressed. However, the enlargement process may be performed by depressing the area designation icon 210 after designating the area. Further, when waiting in step S118, one of the icons may be assigned for waiting cancellation.

  If the zoom-up icon 208 is pressed as a result of the determination in step S109, a constant magnification enlargement process is performed in step S116 with reference to the center point of the display screen 101. Thereafter, in step S117, the setting is changed to “zoom mode 1”, and the image after the enlargement process in step S121, the scroll bar, slicer, and the like are displayed in accordance with the display screen of “zoom mode 1” (see FIG. 3). The reduced screen is displayed and updated.

  On the other hand, if the result of determination in step S108 is that the zoom-down icon 209 has been pressed, it is determined in step S111 whether or not “zoom mode 2”.

  If the result of determination in step S111 is “zoom mode 2”, the setting is changed to “non-zoom mode” in steps S103 and S104, and the “non-zoom mode” display screen (see FIG. 2). ), The image is displayed.

  If the result of determination in step S <b> 111 is not “zoom mode 2”, it is determined in step S <b> 112 whether or not the enlargement ratio after constant magnification reduction is 1 or less. That is, it is determined whether or not the display image after the constant magnification reduction is the same as or smaller than the display image in the “non-zoom mode”.

  If the result of determination in step S112 is that the enlargement ratio after reduction at a constant magnification is 1x or less, reduction processing is performed in which the enlargement ratio is 1 in step S113. Thereafter, in step S114, the setting is changed to “zoom mode 2”, and in step S121, display is performed according to the display screen of “zoom mode 2” (see FIG. 4) (see FIG. 4).

  On the other hand, if the result of determination in step S112 is that the enlargement ratio after reduction of constant magnification is greater than one, reduction processing of constant magnification is performed in step S115 with reference to the center point of the display screen 101, and enlargement in step S121. The processed image, scroll bar, slicer, and reduced screen are displayed and updated.

  As described above, as a method of shifting from the “zoom mode” to the “non-zoom mode” (cancelling the zoom mode), in addition to the method by pressing the zoom button for turning on / off the “zoom mode”, an enlarged screen is displayed. However, it is possible to cancel the “zoom mode” by repeating the reduction process at a constant magnification. However, at this time, the “zoom mode 2” must be performed via the “zoom mode 2” without fail. The possibility of “cancel” is reduced, and the operability of zoom display can be improved.

(Second Embodiment)
FIG. 7 is a block diagram showing a schematic configuration of an image display apparatus and an image output apparatus according to the second embodiment of the present invention. 700 is an image output apparatus, 100 is an image display apparatus, and a video cable 500 is used. Connected.

  The image output device 700 may be any device that outputs a video signal such as a TV tuner or a VTR, for example, and the internal configuration of the image display device 100 is the same as that of the first embodiment. Also in this embodiment, the same effect as in the first embodiment can be obtained.

  In the present invention, in the embodiment described above, the instruction information is detected by transmitting infrared rays from the digitizer modules installed on the left and right of the upper part of the display screen and scanning the surface of the screen. Not exclusively. Also, the display mode, type, and quantity of the area designation method, scroll bar, slicer, reduced screen, zoom window, and the like are not limited to the above-described embodiment. In addition, various changes may be made without departing from the scope of the present invention.

  Further, a storage medium (or recording medium) that records a program code of software that realizes the functions of the above-described embodiments is supplied to the system or apparatus, and the computer (or CPU or MPU) of the system or apparatus stores the storage medium. Needless to say, this can also be achieved by reading and executing the stored program code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Further, after the program code read from the storage medium is written in a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the card or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  The above-mentioned program only needs to be able to realize the functions of the above-described embodiments by a computer, and the form includes object code, a program executed by an interpreter, script data supplied to the OS, and the like. But you can.

  As a recording medium for supplying the program, for example, RAM, NV-RAM, floppy (registered trademark) disk, optical disk, magneto-optical disk, CD-ROM, MO, CD-R, CD-RW, DVD (DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), magnetic tape, non-volatile memory card, other ROM, etc. may be used as long as they can store the above programs. Alternatively, the program is supplied by downloading from another computer or database (not shown) connected to the Internet, a commercial network, a local area network, or the like.

  As described above, the image display device according to the present invention can reduce the possibility that the zoom mode is canceled against the user's intention when the constant magnification reduction process is performed on the enlarged screen. It becomes.

FIG. 4 is a diagram for explaining a display screen when a designated area is enlarged and displayed in the image display apparatus according to the first embodiment of the present invention. FIG. 4 is a diagram for explaining a display screen in “non-zoom mode” in the image display apparatus according to the first embodiment of the present invention. FIG. 5 is a diagram for explaining a display screen of “zoom mode 1” in the image display apparatus according to the first embodiment of the present invention. FIG. 6 is a diagram for explaining a display screen of “zoom mode 2” in the image display apparatus according to the first embodiment of the present invention. 1 is a block diagram illustrating a schematic configuration of an image display apparatus and an information processing apparatus according to a first embodiment of the present invention. FIG. 5 is a processing flow diagram when performing enlarged display or reduced display of a display image in the image display apparatus according to the first embodiment of the present invention. It is a block diagram which shows schematic structure of the image display apparatus which is the 2nd Embodiment of this invention, and an image output device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Image display apparatus 101 Display screen 102 Designated area 103 Digitizer module 104 Digitizer module 105 Operation button 201 Zoom window 202 Vertical slicer 203 Vertical scroll bar 204 Horizontal slicer 205 Horizontal scroll bar 206 Reduction screen 207 Enlarged display area 208 Zoom-in icon 209 Zoom Down icon 210 Area designation icon 300 Personal computer (information processing device)
301 CPU
302 Keyboard I / F
303 RAM
304 ROM
305 Mouse I / F
306 Drawing signal processing unit 307 Display output I / F
308 System bus 401 Image display block 402 Display input I / F
403 Image processing unit 404 Display device 405 Additional display generation unit 406 Mouse I / F
407 System controller 408 Instruction information detection unit 409 Operation button input unit 500 Video cable 600 Communication cable 700 Image output device 800 Instruction information

Claims (4)

A zoom means for enlarging or reducing a part of the display image is provided,
An image display device having a zoom mode that can be set to be enlarged or reduced by the zoom means,
In the zoom mode,
When the display image size reduced by the zoom means is smaller than the display image size before shifting to the zoom mode, the display state of displaying the display image before shifting to the zoom mode is displayed,
In the display state, when the reduced display is performed again by the zoom unit, the zoom mode is canceled. It has a zoom process to enlarge or reduce a part of the display image,
An image display method having a zoom mode that can be set for enlarged display or reduced display by the zoom step,
In the zoom mode,
When the display image size reduced and displayed by the zoom process is smaller than the display image size before shifting to the zoom mode, the display state before displaying the zoom mode is displayed.
In the display state, when the reduced display is performed again by the zoom step, the zoom mode is canceled.   A program for executing the image display method according to claim 2.   A computer-readable storage medium storing the program according to claim 3.

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