JP2013171054A - Display control device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control device on which video information is continuously displayed, and a part of character information does not lack when video data including the video information and the character information is displayed on a multi-display.SOLUTION: A signal separation unit 11 separates a video information signal from a character information signal. A video information signal scaling unit 12 scales the video information signal except parts equivalent to parts of bezels of unit displays D11-D33 to extract a video information partial signal to be displayed in a display area. A character information signal scaling unit 13 scales the character information signal without excluding the parts equivalent to the parts of the bezels to generate a character information partial signal to be displayed in the display area. A video and character superposition unit 14 superposes the character information partial signal on the video information partial signal to be individually supplied as frame signals of the respective corresponding unit displays D11-D33.

Description

  The present invention relates to a display control apparatus for displaying one screen as a whole multi-display by dividing one screen into regions of each unit display when displaying video data on a multi-display in which a plurality of unit displays are arranged in a matrix, for example. And a display control method.

  In a shopping mall or a public facility where many people gather, a multi-display in which a plurality of unit displays as a single display are arranged in a matrix in the horizontal and vertical directions is used to present various information. There are cases (see Patent Document 1). When displaying video data on a multi-display, one screen of the video data is often divided into areas of each unit display, and one screen is displayed as the entire multi-display.

JP 2001-92431 A

  Since the peripheral part of the image display surface of the unit display is a bezel, there is an interval of the width of the bezel between adjacent unit displays of the multi-display. Therefore, if one screen is simply divided by the number of unit displays and displayed on the corresponding unit display, video information does not continue at the boundary of the unit displays. Therefore, considering the bezel width of the unit display, it is called a seamless method that calculates the area of the video data to be displayed on each unit display and displays the video data so that the video information is continuous at the boundary of the unit display. There is a display method. In the seamless method, the video data portion corresponding to the bezel portion between the unit displays adjacent to each other on the left and right or top and bottom is not displayed.

  When video data is displayed on the multi-display in a seamless manner, a general moving image or the like is a preferable display with no sense of incongruity, and no inconvenience occurs. However, if the video data includes character information such as a telephone number or URL, if part of the character information is located at the bezel, a part of the character information is lost, and the multi-display is viewed. There was a problem that some people could not recognize the character information correctly.

  In order to solve this problem, it is only necessary not to perform the display by the seamless method, but it is not preferable because the video information is not continuous and a sense of incongruity occurs as described above. Therefore, there is a need for a display control device and a display control method that can correctly recognize character information when the character information is included while adopting a seamless method.

  In order to meet such a demand, the present invention displays video information including both video information and character information on a multi-display, so that the video information is continuously displayed and does not cause a sense of incongruity. An object of the present invention is to provide a display control device and a display control method capable of correctly recognizing character information without missing a part of information.

  The present invention includes video information and character information in a multi-display in which a plurality of unit displays (D11 to D33) are arranged in at least one of the horizontal direction and the vertical direction in order to solve the above-described problems of the conventional technology. A display control device for displaying video data, wherein when displaying one screen of a video information signal including the video information other than the character information separated from the video data on the multi-display as one screen, the video information Video information signal scaling that scales to extract a video information partial signal of an area to be displayed in each display area of the unit display, excluding a part corresponding to the bezel of the unit display adjacent in the horizontal direction or the vertical direction from the signal Part (12) and one screen of the character information signal separated from the video data When the multi-display is displayed as one screen, the unit included in the multi-display includes one screen of the character information signal without removing a portion corresponding to the bezel of the unit display adjacent in the horizontal direction or the vertical direction. Divided by the number of displays, the character information signal scaling unit (13) for scaling to generate the character information partial signal of the area to be displayed in the display area of each unit display, and the video information signal scaling part outputs A video / character superimposing unit (14) for superimposing the character information partial signal output from the character information signal scaling unit on the video information partial signal and individually supplying it as a frame signal of each corresponding unit display A display control device comprising:

  The display control apparatus may include a separation unit (11) that separates a video information signal including the video information other than the character information from the video data and a character information signal including the character information. The video data may be character information multiplexed video data that can be separated from each other by superimposing the character information signal on the video information signal, and the separation unit includes the video information signal and the character information signal. It can be set as the signal separation part which isolate | separates.

  The display control device may include a separation unit (21) that separates a video information signal including the video information other than the character information from the video data and a character information signal including the character information. The video data may be video data including character information in a part of a screen, and the separation unit includes a character information extraction unit that extracts the character information from the video data, and other than the character information. A video / character separating unit that separates video information and the character information can be provided.

  In the above display control device, the display control device may be individually connected to each of the plurality of unit displays on a one-to-one basis.

In order to solve the above-described problems of the conventional technology, the present invention provides video data including video information and character information on a multi-display in which a plurality of unit displays are arranged in at least one of the horizontal direction and the vertical direction. A display control method for displaying, when displaying one screen of a video information signal including the video information other than the character information separated from the video data as one screen on the multi-display, from the video information signal, Except for the portion corresponding to the bezel of the unit display adjacent in the horizontal direction or the vertical direction, it is scaled to extract the video information partial signal of the area to be displayed in the display area of each of the unit displays and separated from the video data. When displaying one screen of the character information signal as one screen on the multi-display Dividing the screen of the character information signal by the number of unit displays included in the multi-display without removing a portion corresponding to a bezel of the unit displays adjacent in the horizontal direction or the vertical direction; Scale to generate the character information partial signal of the area to be displayed in each display area,
The character information partial signal is superimposed on the video information partial signal, and a superimposed signal of the video information partial signal and the character information partial signal is individually supplied as a frame signal of each corresponding unit display. A display control method is provided.

  In the above display control method, the video data may be character information multiplexed video data that can be separated from each other by superimposing the character information signal on the video information signal, and the video information signal and the character information. The signal can be separated from the signal.

  In the display control method, the video data is video data including character information in a part of a screen, the character information is extracted from the video data, and video information other than the character information and the character information are combined. Can be separated.

  According to the display control device and the display control method of the present invention, when displaying video data including both video information and character information on a multi-display, the video information is continuously displayed without causing a sense of incongruity. In addition, since part of the character information is not lost, the character information can be correctly recognized.

It is a block diagram which shows 1st Embodiment of the display control apparatus of this invention. It is a figure which shows the structural example of a multi display. It is a figure which shows the example of the video data containing video information and character information. It is a figure which shows the video information signal isolate | separated from the video data of FIG. It is a figure which shows the character information signal isolate | separated from the video data of FIG. It is a figure which shows the state of the video information and character information which are displayed on a multi display by 1st Embodiment. For comparison with FIG. 6, it is a diagram showing the state of video information and character information displayed on a multi-display by a conventional display method. It is a block diagram which shows 2nd Embodiment of the display control apparatus of this invention. It is a block diagram which shows 3rd Embodiment of the display control apparatus of this invention.

  Hereinafter, embodiments of a display control device and a display control method of the present invention will be described with reference to the accompanying drawings.

<First Embodiment>
In FIG. 1, a plurality of unit displays D11 to D33 are connected to the display control apparatus 101 of the first embodiment. An arbitrary unit display is referred to as a unit display D. As shown in FIG. 2, the unit displays D11 to D33 have nine unit displays D arranged in a matrix, for example, three in the horizontal direction and three in the vertical direction. Assume that the unit displays D have the same external dimensions.

  The display control apparatus 101 according to the first embodiment includes a signal separation unit 11, a video information signal scaling unit 12, a character information signal scaling unit 13, a video / character superposition unit 14, a multi-display setting unit 15, and a control unit 16.

  The display control apparatus 101 according to the first embodiment receives character information multiplexed video data that can be separated from each other by superimposing a character information signal as additional information on the video information signal. Based on the control by the control unit 16, the signal separation unit 11 separates the input character information multiplexed video data into a video information signal and a character information signal. FIG. 3 shows a predetermined screen (frame) F using character information multiplexed video data. This screen F includes video information Im1 and character information Im2. The video information Im1 may be a moving image or a still image. In FIG. 3, for the sake of convenience, broken lines in the horizontal direction and the vertical direction are attached so as to make it easy to understand the area obtained by dividing the screen F into nine parts.

  The signal separation unit 11 outputs a video information signal having the video information Im1 shown in FIG. 4 and a character information signal having the character information Im2 shown in FIG. 4 and 5 corresponds to the screen F shown in FIG. Thus, the signal separation unit 11 separates the video information signal made up of video information and the character information signal made up of character information from each other. 4 and 5, for the sake of convenience, broken lines in the horizontal and vertical directions that divide the screen F into nine are attached.

  In the multi-display setting unit 15, information on the unit display D itself and information indicating how the plurality of unit displays D are installed to form a multi-display are set. Specifically, the multi-display setting unit 15 is set with a horizontal width Bx and a vertical width By of the bezel Dbz of the unit display D shown in FIG. The multi-display setting unit 15 is set with a horizontal width Dx and a vertical width Dy of the display area Ds which is a video display surface of the unit display D.

  Further, the multi-display setting unit 15 is set with how many unit displays D in the horizontal direction and how many unit displays D in the vertical direction, and each of the plurality of unit displays D is included in the multi-display. Information indicating the position of the unit display D is set.

  Various information set in the multi-display setting unit 15 can be arbitrarily changed or set according to the unit display D to be used and how the multi-display is configured, according to user settings. Can do. For example, a menu can be displayed on the unit display D on the screen, and the user can set various information using the menu.

  Various types of information set in the multi-display setting unit 15 are input to the control unit 16. The control unit 16 controls the video information signal scaling unit 12 to scale the video information signal in a seamless manner using various types of input information. In addition, the control unit 16 controls the character information signal scaling unit 13 to scale the character information signal using a normal display method that is not a seamless method, using various types of input information.

  First, the operation by the seamless method executed by the video information signal scaling unit 12 will be described. The multi-display is composed of Mx unit displays D in the horizontal direction and My unit displays D in the vertical direction. When the multi-display is viewed from the front as shown in FIG. 2, it is Xth in the horizontal direction and Yth in the vertical direction. The area of the video information signal to be displayed by the unit display D is calculated as the following equations (1) to (4). In Expressions (1) to (4), the upper left horizontal position of the region of the video information signal to be displayed on the unit display D is V_x1, the upper left vertical position is V_y1, and the lower right horizontal position is V_x2. The vertical position in the lower right is V_y2. As shown in FIGS. 3 to 5, the horizontal width of the screen F of the character information multiplexed video data (video information signal and character information signal) is Vx, and the vertical width is Vy.

V_x1 = [Bx + {(Dx + 2Bx) × (X-1)}] / {(Dx + 2Bx) × Mx} × Vx (1)
V_y1 = [By + {(Dy + 2By) × (Y-1)}] / {(Dy + 2By) × My} × Vy… (2)
V_x2 = [Bx + {(Dx + 2Bx) × (X-1)} + Dx] / {(Dx + 2Bx) × Mx} × Vx (3)
V_y2 = [By + {(Dy + 2By) × (Y-1)} + Dy] / {(Dy + 2By) × My} × Vy… (4)

  The video information signal scaling unit 12 calculates the area of the video information signal to be displayed by each unit display D based on the equations (1) to (4). The video information signal having the video information Im1 shown in FIG. 4 apparently has an upper left corner of the unit display D11, an upper right corner of the unit display D13, a lower left corner of the unit display D31, and a unit display D33. Will be displayed in a rectangular area surrounded by the lower right corner of.

  The video information signal scaling unit 12 calculates the display area Ds of each unit display D excluding the bezel Dbz portion of the unit display D adjacent in the horizontal direction or the vertical direction in the rectangular range displaying the video information signal by the above calculation. A region of the video information signal to be displayed is extracted. A signal in the area of the video information signal to be displayed in the display area Ds of each unit display D is referred to as a video information partial signal.

  Next, the operation by the normal display method executed by the character information signal scaling unit 13 will be described. The multi-display is composed of Mx unit displays D in the horizontal direction and My unit displays D in the vertical direction. When the multi-display is viewed from the front as shown in FIG. 2, it is Xth in the horizontal direction and Yth in the vertical direction. The area of the character information signal to be displayed by the unit display D is calculated as the following equations (5) to (8).

V_x1 = [{Dx × (X-1)} / (Dx × Mx)] × Vx) (5)
V_y1 = [{Dy × (Y-1)} / (Dy × My)] × Vy) (6)
V_x2 = {(Dx × X) / (Dx × Mx)} × Vx (7)
V_y2 = {(Dy × Y) / (Dy × My)} × Vy (8)

  The character information signal scaling unit 13 calculates a region of the character information signal to be displayed on each unit display D based on the equations (5) to (8). The character information signal having the character information Im2 shown in FIG. 5 is displayed in the display area Ds of the corresponding unit display D of the multi-display shown in FIG. . The character information signal scaling unit 13 generates a signal of an area obtained by dividing the character information signal of FIG. 5 into nine parts without removing a portion corresponding to the bezel Dbz of the unit display D adjacent in the horizontal direction or the vertical direction. A signal in an area obtained by dividing a character information signal to be displayed in the display area Ds of each unit display D is referred to as a character information partial signal.

  Returning to FIG. 1, the video information signal (video information partial signal) scaled corresponding to each unit display D by the video information signal scaling unit 12 in a seamless manner and the character information signal scaling unit 13 in the normal display manner. The character information signal (character information partial signal) scaled corresponding to the unit display D is input to the video / character superimposing unit 14. The video / character superimposing unit 14 superimposes the character information partial signal output from the character information signal scaling unit 13 on the video information partial signal output from the video information signal scaling unit 12 based on control by the control unit 16. Thus, a character information superimposed video signal (superimposed signal) is generated.

  The video / character superimposing unit 14 individually generates a frame signal to be displayed on each unit display D for each unit display D based on control by the control unit 16. That is, the video / character superimposing unit 14 extracts a video information signal area and a text information signal area to be displayed on each unit display D, and uses them as frame signals to be displayed on each unit display D. At this time, the video / character superimposing unit 14 adds the horizontal and vertical synchronizing signals to the frame signal and supplies them to the unit displays D. Note that the video / character superimposing unit 14 may convert the resolution of a signal obtained by dividing the character information superimposed video signal into frames for each unit display D and supply the converted signal to each unit display D. Of course, synchronization signal superposition and resolution conversion may be performed in a circuit block different from the video / character superposition unit 14.

  FIG. 6 shows the state of the video information and character information displayed on the multi-display composed of the unit displays D11 to D33 based on the control by the display control apparatus 101 of the first embodiment. As shown in FIG. 6, although the video information Im1 is divided by the bezel Dbz of the unit display D, the video information Im1 is displayed so as to be continuous between the adjacent unit displays D. Note that “continuous” here means that the video information Im1 is actually divided, but it seems that a part of the continuous video information Im1 is hidden by the part of the bezel Dbz. Suppose that it can be seen without memorizing.

  Further, as shown in FIG. 6, since the character information Im2 does not remove the part of the bezel Dbz, all of the character information Im2 is displayed without missing a part of the character information Im2. Therefore, the person watching the multi-display can correctly recognize the character information Im2.

  As described above, according to the display control apparatus 101 of the first embodiment, when video data including both video information and character information is displayed on the multi-display, the video information is continuously displayed, so that a sense of incongruity occurs. Moreover, since part of the character information is not lost, the character information can be recognized correctly.

  7A and 7B show a display state for comparison with the display state shown in FIG. 6 according to the first embodiment. FIG. 7A shows a state in which the entire video data of FIG. 3 is displayed on the multi-display by the normal display method, and FIG. 7B shows the entire video data of FIG. 3 on the multi-display by the seamless method. The displayed state is shown. In FIG. 7A, although all of the character information Im2 is displayed, the video information Im1 becomes discontinuous, resulting in a strange display state. In FIG. 7B, although the video information Im1 is displayed continuously, a part of the character information Im2 is lost and the character information Im2 cannot be correctly understood.

  According to the display control apparatus 101 of the first embodiment, the problems in FIGS. 7A and 7B are solved, and both continuous display of video information and display of character information without omissions are made compatible. be able to.

Second Embodiment
The display control apparatus 102 of 2nd Embodiment is demonstrated using FIG. 8, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In the display control apparatus 102 of the second embodiment, the video data input to the display control apparatus 102 includes character information in part of the screen, not the character information multiplexed video data as in the first embodiment. It is assumed that the video data is such.

  In FIG. 8, a video / character separating unit 21 extracts character information included in input video data and separates video information other than character information from character information. The video / character separating unit 21 includes a character information extracting unit 210. As a technique for extracting character information included in the video data, for example, a known technique adopted in a caption moving circuit that extracts and moves a caption included in the video data may be used. The video / character separation unit 21 interpolates and embeds surrounding video information in a portion where character information is extracted, and generates a video information signal without character information.

  If the predetermined screen F of the video data input to the video / character separation unit 21 is the same video as that shown in FIG. 3, the video / character separation unit 21 sends the video information signal without character information as shown in FIG. And the character information signal similar to that shown in FIG. 5 extracted by the character information extraction unit 210 is output. The operations of the video information signal scaling unit 12, the character information signal scaling unit 13, the video / character superimposing unit 14, the multi-display setting unit 15, and the control unit 16 are the same as those of the display control apparatus 101 of the first embodiment.

  Similarly to the display control apparatus 101 of the first embodiment, the display control apparatus 102 of the second embodiment continuously displays video information when displaying video data including both video information and character information on a multi-display. Since it is displayed, there is no sense of incongruity, and since part of the character information is not lost, the character information can be recognized correctly.

<Third Embodiment>
In the first and second embodiments, one display control device 101, 102 is connected to the entire multi-display, and the video / character superimposing unit 14 divides the frame signal to be supplied to each unit display D. The display control devices 101 and 102 and the unit display D may be provided on a one-to-one basis.

  The third embodiment shown in FIG. 9 shows a configuration when the display control devices 101 and 102 and the unit display D are provided on a one-to-one basis. When the display control apparatus 101 of the first embodiment is connected to the unit display D, the character information multiplexed video data described above is input to the display control apparatus 101. When the display control apparatus 102 of the second embodiment is connected to the unit display D, the video data described above is input to the display control apparatus 102. In FIG. 9, input of user settings shown in FIGS. 1 and 8 is omitted, but the above-described user settings are made in the respective display control devices 101 and 102.

  Character information multiplexed video data (or video data) as shown in FIG. 3 is input to each of the display control devices 101 and 102. Each of the display control devices 101 and 102 individually generates a frame signal to be displayed on the unit display D in accordance with the position of the connected unit display D based on the control by the control unit 16. Also in the third embodiment, the video / character superimposing unit 14 may add the horizontal and vertical synchronization signals to the frame signal and supply them to the connected unit display D, and if the resolution is converted as necessary. Good. Similarly, synchronization signal superimposition and resolution conversion may be performed in a circuit block different from the video / character superimposing unit 14.

  The present invention is not limited to the first to third embodiments described above, and various modifications can be made without departing from the gist of the present invention. The multi-display may be arranged only in the horizontal direction or the vertical direction, and the arrangement method and the number of unit displays D are arbitrary. A plurality of unit displays may be arranged side by side in at least one of the horizontal direction and the vertical direction to form a multi display.

11 Signal separator (separator)
12 Video Information Signal Scaling Unit 13 Character Information Signal Scaling Unit 14 Video / Character Superimposing Unit 15 Multi Display Setting Unit 16 Control Unit 21 Video / Character Separating Unit (Separating Unit)
101, 102 Display control device 210 Character information extraction unit D11 to D33 Unit display

Claims (7)

A display control device that displays video data including video information and character information on a multi-display in which a plurality of unit displays are arranged in at least one of a horizontal direction and a vertical direction.
When one screen of a video information signal including the video information other than the character information separated from the video data is displayed on the multi-display as a single screen, the video information signal is adjacent in the horizontal direction or the vertical direction. A video information signal scaling unit that scales to extract a video information partial signal of an area to be displayed in a display area of each of the unit displays, except for a portion corresponding to a bezel of the unit display;
When displaying one screen of the character information signal separated from the video data as one screen on the multi-display, without removing a portion corresponding to a bezel of the unit display adjacent in the horizontal direction or the vertical direction, Character information signal scaling for dividing one screen of a character information signal by the number of unit displays included in the multi-display and generating a character information partial signal of an area to be displayed in a display area of each unit display And
The character information partial signal output from the character information signal scaling unit is superimposed on the video information partial signal output from the video information signal scaling unit and supplied individually as a frame signal of each corresponding unit display. A video / character overlay
A display control apparatus comprising: A separation unit that separates the video information signal including the video information other than the character information from the video data and the character information signal including the character information;
The video data is character information multiplexed video data that can be separated from each other by superimposing the character information signal on the video information signal,
The display control apparatus according to claim 1, wherein the separation unit is a signal separation unit that separates the video information signal and the character information signal. A separation unit that separates the video information signal including the video information other than the character information from the video data and the character information signal including the character information;
The video data is video data including character information in a part of the screen,
The separation unit includes a character information extraction unit that extracts the character information from the video data, and is a video / character separation unit that separates video information other than the character information from the character information. The display control apparatus according to claim 1.   The display control apparatus according to claim 1, wherein the display control apparatus is individually connected to each of the plurality of unit displays in a one-to-one relationship. A display control method for displaying video data including video information and character information on a multi-display in which a plurality of unit displays are arranged in at least one of a horizontal direction and a vertical direction.
When one screen of a video information signal including the video information other than the character information separated from the video data is displayed on the multi-display as a single screen, the video information signal is adjacent in the horizontal direction or the vertical direction. Except for the portion corresponding to the bezel of the unit display, scaling to extract the video information partial signal of the area to be displayed in the display area of each of the unit displays,
When displaying one screen of the character information signal separated from the video data as one screen on the multi-display, without removing a portion corresponding to a bezel of the unit display adjacent in the horizontal direction or the vertical direction, Dividing one screen of a character information signal by the number of unit displays included in the multi-display, and scaling to generate a character information partial signal of an area to be displayed in a display area of each of the unit displays;
Superimposing the character information partial signal on the video information partial signal;
A display control method, comprising: individually supplying a superimposed signal of the video information partial signal and the character information partial signal as a frame signal of each corresponding unit display. The video data is character information multiplexed video data that can be separated from each other by superimposing the character information signal on the video information signal,
6. The display control method according to claim 5, wherein the video information signal and the character information signal are separated. The video data is video data including character information in a part of the screen,
Extracting the character information from the video data;
The display control method according to claim 5, wherein video information other than the character information and the character information are separated.

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