JP2013250512A - Display control device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control device and a display control method which can improve visibility of a composite image where images of plural drawing planes are superimposed upon one another.SOLUTION: A display control device includes an IG area drawing determination unit 9 that determines an image display area on an IG plane drawn by a GUI creation unit 7 for IG according to an image display request to the IG plane, and a system control unit 3 that controls a GUI creation unit 6 for user to change the image display position of a user plane so as to avoid superimposition upon the image display area on the IG plane determined by the IG area drawing determination unit 9.

Description

  The present invention relates to a display control apparatus and a display control method for performing display output by superimposing a plurality of plane images.

Patent Document 1 has an animation display control flag for instructing whether or not to continue the animation display when there is a user input for changing the state of the button during the animation display of the button image, and the user input is accepted. A playback device is disclosed in which the display control unit controls the animation display to be continued or interrupted according to the instruction of the animation display control flag.
In this apparatus, during the animation display by controlling as described above in the animation display used for the button image that realizes the interactive operation by the user with respect to the program recorded on the large-capacity recording medium such as the Blu-ray disc. The content production side can control the behavior of the button image animation display when there is a user operation to change the button state.

JP 2007-172716 A

The Blu-ray standard has a pop-up display function in which drawing is controlled by a Java (registered trademark; not described below) module.
For example, when playing a Blu-ray Disc (hereinafter referred to as BD) content, if the user requests a pop-up menu display, the Java module unit executes the Java program read from the BD. The pop-up menu image is drawn on an IG (Interactive Graphic) plane according to the Java program.

On the other hand, the system control unit of the BD player controls a process of drawing a graphic character for user operation such as a button image on the user plane superimposed on the upper layer (front side of the screen) of the IG plane.
Thus, the IG plane is drawn under the management by the Java module unit, and the user plane is drawn under the management by the system control unit. Since the drawing processes of these planes are independent of each other, for example, the system control unit cannot recognize at which position on the IG plane the image is drawn.
For this reason, when an image is synthesized by superimposing the IG plane and the user plane, depending on the display position of the image drawn on the IG plane (pop-up menu image), the image drawn on the user plane (such as an operation button image) There is a problem that the visibility deteriorates due to overlap.

  Conventionally, when an image of an IG plane and an image of a user plane are overlapped as described above, the display position of the image on the user plane is changed by instructing the system control unit according to a request from the user. However, since the system control unit cannot recognize where the image is drawn on the IG plane, even if the display position of the image on the user plane is changed according to a request from the user, Depending on the image display area, there is a possibility that the overlap cannot be eliminated.

  Note that the conventional technique represented by Patent Document 1 relates to drawing processing on a plane that can be controlled on the content production side. It cannot be solved.

  The present invention has been made to solve the above-described problems, and provides a display control device and a display control method capable of improving the visibility of a composite image in which images of a plurality of drawing planes are superimposed. Objective.

  The display control apparatus according to the present invention includes a first drawing unit that draws an image on the first plane, and a second that draws an image on the second plane regardless of the image position on the first plane. In a display control apparatus that outputs composite image data in which at least a first plane and a second plane are superimposed, a second drawing unit responds to an image display request to the second plane. A determination unit that determines an image display area on the drawn second plane, and a first drawing unit that controls the first drawing unit so as not to overlap the image display area on the second plane determined by the determination unit. A control unit that changes the image display position of the plane.

  According to the present invention, it is possible to improve the visibility of a composite image in which images of a plurality of drawing planes are superimposed.

It is a block diagram which shows the structure of the display control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the aspect of the image | video synthesis | combination of a some plane. It is a figure which shows an example of the process which discriminates the drawing area of IG plane. It is a figure which shows the aspect of the discrimination | determination process performed for every division area of a predetermined size. It is a figure which shows the aspect of the discrimination | determination process performed for every divided area of the size changed dynamically.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a display control apparatus according to Embodiment 1 of the present invention. In FIG. 1, the display control apparatus according to the first embodiment displays images on a plurality of planes, which are storage areas respectively defined in the image memory space, based on data reproduced from a BD by the Blu-ray data reproduction apparatus 2. It is a device that draws and outputs an image synthesized by superimposing these plane images. As its functional configuration, the system control unit 3, Java module unit 4, compressed video decoding unit 5, user GUI creation unit 6, IG area drawing determination unit 9, IG GUI creation unit 7, video screen creation unit 8 and video composition The unit 10 is provided.

The Blu-ray data playback device 2 has a function of playing back the data recorded on the BD, separating the playback data into video, audio, programs, and the like, and outputting the separated data to the corresponding functional configuration unit.
The system control unit 3 is a control unit that controls the operation of the entire BD player having a BD playback function, and performs control to cause each functional component to execute processing according to a user request. For example, the system control unit 3 causes a pop-up menu to be rendered by issuing a pop-up menu request event to the Java module unit 4 in response to a pop-up menu request from the user.

The Java module unit 4 executes the Java program read from the BD by the Blu-ray data playback device 2, and executes an operation according to the Java program. For example, the Java module unit 4 controls the drawing of a pop-up menu on the IG plane by the IG GUI (Graphical User Interface) creation unit 7.
The compressed video decoding unit 5 has a function of decoding and reproducing the compressed video data read from the BD by the Blu-ray data playback device 2.

Under the control of the system control unit 3, the user GUI creation unit 6 displays graphic characters for user operations such as buttons and icons constituting the GUI on the user plane, which is the first plane defined in the memory space. It is the 1st drawing part which draws as an image of this.
The IG GUI creation unit 7 controls the graphic characters of the disc content, such as pop-up menus constituting the GUI, on the IG plane, which is the second plane defined in the memory space, under the control of the Java module unit 4. 2 is a second drawing unit that draws as the first image.
The video screen creation unit 8 has a function of creating video screen data on a moving picture plane defined in the memory space from the video data decoded by the compressed video decoding unit 5.

The IG area drawing determination unit 9 is a determination unit that determines which position on the IG plane the graphic character drawn on the IG GUI creation unit 7 is located.
The video composition unit 10 includes user plane image data created by the user GUI creation unit 6, IG plane image data created by the IG GUI creation unit 7, and a video created by the video screen creation unit 8. It has a function of superimposing plain image data and combining them into a single image. That is, the output video of the video synthesizing unit 10 includes a display UI (User Plane) (IG plane) included in the disc content for the moving image and a GUI (User Plane) drawn under the control of the system control unit 3. A video synthesized with the image is output (output video).

Next, the operation will be described.
FIG. 2 is a diagram showing a mode of video synthesis of a plurality of planes in the present invention. As shown in FIG. 2, in the present invention, the video plane 13, the IG plane 12, and the user plane 11 defined in the memory space are superimposed and synthesized in this order from the back side to the front side of the screen, A video output plane in which images are combined is created in the memory space.

The system control unit 3 outputs a pop-up request event to the Java module unit 4 when a pop-up menu display is requested by the user using an input unit (not shown).
At this time, the system control unit 3 rewrites the pixel data of the IG plane 12 in the memory space to an arbitrary value (initialization). For example, when rewriting to a black screen, the pixel data on the IG plane 12 are all “0”. Even if any character or figure is drawn on the IG plane 12 before initialization, the existing drawing contents are erased by the initialization.
Normally, when displaying a pop-up menu, the existing drawing contents are erased and only the pop-up menu is drawn.
As described above, the system control unit 3 initializes the data of the IG plane 12 immediately before the popup corresponding to the user request is executed, and thereafter, the popup menu image 12a corresponding to the user request is drawn. In this case, a portion different from the initialization data corresponds to the drawn pop-up menu image 12a.

When receiving a pop-up request event from the system control unit 3, the Java module unit 4 controls the IG GUI creation unit 7 to create image data in which the pop-up menu image 12 a is drawn on the IG plane 12. The image data of the IG plane 12 is relayed to the IG area drawing determination unit 9 before transferring the image to the video composition unit 10.
The IG region drawing determination unit 9 determines at which position on the IG plane 12 the pop-up menu image 12a is drawn. For example, when the IG plane is a data area of one field 1920 * 1080, it is possible to determine at which position the pop-up menu image 12a is drawn in one field data transfer period of 1920 * 1080 pixels.

  FIG. 3 is a diagram illustrating an example of processing for determining the drawing area of the IG plane. In the example illustrated in FIG. 3, the IG region drawing determination unit 9 scans a region for one field of the IG plane 12 and stores determination data regarding all pixels. For example, the discrimination results for 1920 * 1080 pixels are stored. The determination result by the IG region drawing determination unit 9 is output to the system control unit 3.

  When the system control unit 3 inputs from the IG region drawing determination unit 9 the result of determining all regions for one field of the IG plane 12, the system control unit 3 controls the drawing processing of the user GUI creation unit 6 based on the determination result. Then, the display position of the operation button image 11a is changed to a position on the user plane 11 that does not overlap the pop-up menu image 12a in the lower IG plane 12. For example, as shown in FIG. 2, if it is determined that the pop-up menu image 12 a is drawn in each of the two opposing sides of the IG plane 12, the operation button image 11 a is displayed at the center of the user plane 11. draw. This makes it possible to draw the operation button at an appropriate position without hindering the visibility of the pop-up menu.

  When the user plane 11, the IG plane 12, and the moving picture plane 13 are, for example, a data area of one field 1920 * 1080, the video composition unit 10 is a data of 1920 pixels in the horizontal direction and 1080 pixels in the vertical direction. Transfer is performed from each of the planes 11, 12, and 13, and these are combined as one image. The output video of the video synthesizing unit 10 is sent to and displayed on a display device (not shown) in FIG.

As a method of drawing an image at an appropriate position on the user plane 11 that does not overlap with the image of the IG plane 12, first, an image (in an area on the user plane 11 that does not correspond to the pop-up menu display area drawn on the IG plane 12 ( It is conceivable that an operation button or the like is directly drawn, and the user synthesizer 10, the IG plane 12, and the moving picture plane 13 are all synthesized by the video composition unit 10 with the same address standard.
If there is an image already drawn at an arbitrary position on the user plane 11, the planes 12 and 13 excluding the user plane 11 are synthesized based on the same address reference. Alternatively, an offset address for shifting the drawing position to a position that does not overlap with the pop-up menu image 12a drawn on the screen may be set.
Even in this way, as a synthesis result, it is possible to obtain an output video having an optimal positional relationship in which images such as pop-up menus and operation buttons do not overlap.

  As described above, according to the first embodiment, the IG region drawing determination unit that determines the image display region on the IG plane 12 drawn by the IG GUI creation unit 7 in response to an image display request to the IG plane 12. 9 and a system control unit that changes the image display position of the user plane 11 by controlling the user GUI creation unit 6 so as not to overlap the image display region on the IG plane 12 determined by the IG region drawing determination unit 9 3. With this configuration, the display position of the image 11a such as the operation button on the user plane 11 is automatically changed so as not to overlap the pop-up menu image 12a drawn on the IG plane 12, so that the user The visibility of the output video synthesized by superimposing the plane 11 and the IG plane 12 can be improved.

  In the first embodiment, it is necessary to store the data in which the IG region drawing determination unit 9 determines the position of the pop-up menu image 12a in all regions of one field of the IG plane 12. For example, if one field is 1920 * 1080 pixels, it is necessary to store the discrimination data for 1920 * 1080 pixels, and it is necessary to secure a new area in the memory space for storing the discrimination data. Further, the system control unit 3 changes the display position of the operation button image 11a based on the discrimination data for one field, which is a complicated process.

Therefore, the IG plane 12 may be divided into areas of a predetermined size, and the IG area drawing determination unit 9 may perform the determination process for each divided area.
FIG. 4 is a diagram showing an aspect of the discrimination process performed for each divided area of a predetermined size. As shown in FIG. 4B, the IG plane 12 is divided into divided areas of a predetermined size (in the example shown, 25 divisions), and it is determined whether or not the pop-up menu image 12a is drawn for each divided area. . In this way, it is only necessary to store the discrimination data for 25 areas, and the capacity of the storage area to be secured in the memory space can be reduced.

Further, as shown in FIG. 4A, the system control unit 3 recognizes how many divided areas the image 11a such as operation buttons drawn on the user plane 11 corresponds to.
Therefore, the system control unit 3 notifies the IG region drawing determination unit 9 of the size of the image 11a, so that the IG region drawing determination unit 9 displays the pop-up menu image 12a as shown in FIG. When it is determined that there are only undivided divided areas necessary for displaying the image 11a, it is possible to respond to the system control unit 3 using the area 12A as discrimination data. In this way, it is possible to determine and display the display position of the image 11a much faster than when determining one field.

In the example described above, the size of the divided area of the IG plane 12 is irrelevant to the size of the area necessary for displaying the image 11a of the user plane 11, so that as shown in FIG. The area size may correspond to an area obtained by combining a plurality of divided areas, and the process of determining the position where the image 11a is displayed may be complicated.
Therefore, the size of the divided area on which the determination process is performed by the IG region drawing determination unit 9 may be dynamically changed according to the size of the region necessary for displaying the image 11a on the user plane 11.

FIG. 5 is a diagram illustrating an aspect of the discrimination process performed for each divided area having a dynamically changed size. As shown in FIG. 5A, the system control unit 3 recognizes the size of the region necessary for displaying the image 11a such as an operation button drawn on the user plane 11, so that the IG region drawing determination unit 9 is notified of the size of the image 11a.
As shown in FIG. 5 (b), the IG region drawing determination unit 9 dynamically changes the size of the divided area of the IG plane 12 to the size of the region necessary for displaying the image 11a. The position where the pop-up menu image 12a is displayed is determined. At this time, when a divided area where the pop-up menu image 12a is not displayed is found, this area 12B is returned to the system control unit 3 as discrimination data.
In this way, it is possible to determine and display the display position of the image 11a faster than in the case of determination in units of fixed-size divided areas.

When there are a large number of operation buttons to be displayed (for example, in the case of FIG. 5A, two triangular buttons and one cross-shaped button), the size of the area necessary for all of them is displayed. Is the size of the divided area, the larger the number of operation buttons, the larger the size of the divided area and the smaller the number of divided IG planes 12.
On the other hand, when there are a small number of operation buttons to be displayed, the size of the area necessary for displaying all of them is reduced, so the size of the divided area is reduced and the number of divisions of the IG plane 12 is increased. .
However, even in both cases, since the size of the area necessary for displaying the operation button image is equal to the size of one divided area, at least when one divided area where the pop-up menu is not displayed is found. It is only necessary to change the display position to the area on the user plane 11 corresponding to the area, and the display position determination process can be greatly simplified.

  Further, when the pop-up menu display area on the IG plane is large and an area for displaying an image such as an operation button cannot be secured at a position that does not overlap the pop-up menu on the user plane, the system control unit 3 determines whether to display the IG area. By controlling the user GUI creation unit 6 based on the discrimination data from the unit 9, the image such as the operation button is resized to a size that can be drawn in the area on the user plane corresponding to the empty area of the IG plane. Also good. By doing in this way, the visibility of a pop-up menu and operation buttons can be made compatible.

  Furthermore, if the pop-up menu display area on the IG plane is large and the area for displaying images such as operation buttons cannot be secured in a position that does not overlap the pop-up menu on the user plane, the display of both images will overlap. The control unit 3 may convert the image such as operation buttons into a translucent graphic character by controlling the user GUI creation unit 6. As a result, a pop-up menu overlapping an image such as an operation button can also be visually recognized.

  In the first embodiment, the case where the user plane 11 and the IG plane 12 on which images are drawn independently from each other has been described, but the present invention is independent of the display position of the image drawn on a certain plane. In addition, the present invention is applicable to any display control device that draws an image on the other plane and outputs a composite image obtained by superimposing these planes.

  In the present invention, any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 Display control apparatus, 2 Blu-ray data reproducing apparatus, 3 System control part, 4 Java module part, 5 Compressed video decoding part, 6 User GUI creation part, 7 IG GUI creation part, 8 Video screen creation part, 9 IG area | region Drawing discriminating unit, 10 video composition unit, 11 user plane, 11a operation button image, 12 IG plane, 12a pop-up menu image, 12A, 12B operation button corresponding area, 13 moving image plane, 13a moving image image.

Claims (9)

A first drawing unit that draws an image on the first plane; and a second drawing unit that draws an image on the second plane regardless of the image position on the first plane, In the display control apparatus that outputs the composite image data obtained by superimposing the first plane and the second plane,
A discriminating unit for discriminating an image display area on the second plane drawn by the second drawing unit in response to an image display request to the second plane;
A control unit that controls the first drawing unit to change the image display position of the first plane so as not to overlap the image display area on the second plane determined by the determination unit. A display control device characterized by that. When there is an image display request to the second plane, the control unit initializes the second plane to a predetermined image content before the second drawing unit draws,
The display control apparatus according to claim 1, wherein the second drawing unit draws an image on the second plane after initialization in response to an image display request to the second plane. .   The first drawing unit sets an offset in an image display position on the first plane so as not to overlap an image display area on the second plane. 2. The display control device according to 2.   4. The determination unit according to claim 1, wherein the determination unit divides the second plane into areas of a predetermined size and determines an image display region by scanning in units of divided areas. The display control apparatus according to 1.   The determination unit divides the second plane for each area that is dynamically changed to a size corresponding to a display area of an image drawn on the first plane, and scans the image display area by scanning in units of divided areas. The display control apparatus according to claim 1, wherein:   2. The display according to claim 1, wherein when there is no display position that does not overlap the image display area of the second plane, the first drawing unit resizes the image and draws the image on the first plane. Control device.   When the first plane is superimposed on the upper layer of the second plane, the first drawing unit translucently displays the image if there is no display position that does not overlap the image display area of the second plane. The display control apparatus according to claim 1, wherein the display control apparatus draws the first plane. The second plane is an IG (Interactive Graphic) plane,
The first plane is a user plane that is superimposed on the IG plane and combined.
The first drawing unit draws an image on the user plane,
The second drawing unit draws a pop-up menu image on the IG plane regardless of an image position on the user plane in response to a pop-up menu display request. The display control apparatus of any one of these. Draw an image on the first plane, draw an image on the second plane regardless of the image position on the first plane, and overlay at least the first plane and the second plane In a display control method for outputting combined composite image data,
Initializing the second plane to a predetermined image content before drawing on the second plane in response to an image display request on the second plane;
Rendering an image on the second plane after initialization in response to an image display request to the second plane;
Determining an image display area drawn on the second plane;
Changing the image display position of the first plane so as not to overlap the image display area on the determined second plane.

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