JP2008172611A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver which performs caption display control legible for a user. <P>SOLUTION: When a program is started, in what area of a display screen, outside, middle or inside the caption is displayed is checked and frequency distribution of each area from frequencies displayed in each area at preset prescribed time. When frequency of being displayed in outer area of the display screen is high, it is estimated that the caption is positioned in being a main video image and additional caption information and caption display is not moved. In addition, even when any areas are at equivalent frequencies, the caption is not moved. Otherwise, display control for moving the caption in surrounding ares is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a television receiver, and more particularly, to a caption display technology thereof.

  There are various techniques for displaying subtitles on a television receiver. FIG. 6 is a diagram illustrating a display example of a general television receiver 201. As shown in FIG. 6, a video display 231 and a caption display 241 can be displayed on the display screen 211 of the television receiver 201.

  For example, there is a technology for moving a subtitle to an arbitrary position that does not interfere with the main video by displaying a block indicating the display position and display area of the subtitle on the display screen, and specifying the mark by using a remote control operation. is there. In addition, by automatically changing the value of subtitle information data (display area and display position) based on the display position of the main video on the display screen, the subtitle can be displayed along with the video for easy viewing. Techniques for doing this are also disclosed.

JP 2004-320324 A JP 2002-199354 A

However, manually moving the caption display position is troublesome and cumbersome for the user. Patent Document 2 aims to automatically change the caption display area and position when displaying a reduced video on a part of the display screen so that the video can be easily viewed together. There is a problem that it cannot be applied when subtitles overlap an important part of the video in the normal viewing mode.
An object of the present invention is to simplify easy-to-view subtitle display control.

  The frequency distribution of the subtitle display position is calculated from the subtitle information data added to the main video, and the necessity of the subsequent subtitle display movement is determined based on the frequency distribution. The subtitle display position is automatically moved. This technology automatically moves subtitles when the video is difficult to see when the video is displayed on the entire screen. The frequency distribution of the subtitle display position is calculated from the subtitle information data added to the main video, and the frequency distribution Based on the above, it is determined whether or not the subsequent subtitle display movement is necessary. If it is determined to be “necessary”, the subtitle display position is automatically moved.

  That is, according to one aspect of the present invention, there is provided a television display device capable of displaying captions, the means for obtaining the frequency of the position where the caption is displayed on the display screen, and the display type based on the frequency. A television receiver characterized by comprising: means for determining; and means for determining whether or not to perform display control for moving a display position of a caption so as not to make it difficult to view a video in the caption based on the determination. Provided.

  The means for determining the type of display determines that the frequency determined by the means for acquiring the frequency of the position where the caption is displayed is the type of video subject when the frequency is high on the center side of the display screen, When the height is high on the peripheral side of the display screen, it is preferable to determine that the video and the subtitle display coexist. The means for determining the display type is based on the virtual first boundary line for determining the position where the caption is displayed, and the frequency of the inner region is higher than the frequency of the outer region. It is possible to judge whether it is high. The means for determining the type of display determines that the frequency determined by the means for acquiring the frequency of the position where the caption is displayed is the type of video subject when the frequency is high on the center side of the display screen, When it is high on the peripheral side of the display screen, it can be determined that the video and caption display coexist, and when it covers the entire area, it can be determined that the type is the main character broadcast.

  In addition to the first boundary line, by adding at least one second boundary line having a certain width and taking into account the frequency between the first boundary line and the second boundary line, It can also be determined that the display of subtitles in the entire display screen is substantially uniform. You may make it provide the operation means to change the said boundary line. It is preferable that the frequency is sequentially acquired after the displayed program or content is changed.

  When the display control technology of the present invention is used, a display screen including subtitles is easy for the user to see.

  Hereinafter, a television receiver using the caption display control technology according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing a configuration example of the television receiver according to the present embodiment. As shown in FIG. 1, the television receiver according to the present embodiment includes a tuner unit 101, a separation unit 102, an AV decoder 103, a character broadcast decoder 104, an AV display output unit 105, and a display monitor. A unit 106, a CPU 107 that controls the whole, a memory 108, and an interface unit 109 are included. By separating the character information by the separating unit and decoding it by the teletext decoder, it is possible to extract the data related to the caption and display the caption on the monitor unit 106 based on the display control.

  FIG. 2 is a diagram illustrating a screen display example of the monitor unit 106. As shown in FIG. 2, the screen display 111 of the monitor unit 106 includes a main video display 112 displayed in an area indicated by a broken line DL1, and a subtitle display 113 displayed in an area avoiding the main video display 112, May be included. These areas are not actually displayed on the display screen, but are illustrated as virtual areas in display control.

  FIG. 3 is a flowchart showing a flow of subtitle display processing according to the present embodiment. As shown in FIG. 3, first, when a program starts in step S1, initialization processing is performed in step S2. In the initialization process, it is assumed that 1) subtitle movement is necessary or not, and 2) the frequency parameters are Na = Nc = 0 and Pa = Pc = 0. Here, Nx is the number of caption display times in each area, and Px is the caption display frequency in each area.

  Next, in step S3, it is determined whether or not there is a caption input. If Yes, the process proceeds to step S4 and the caption data is decoded. The subtitle display area can be determined based on position data on the display screen related to display. In step S5, it is checked in which area of the display screen the subtitle is displayed. When displayed in the area A (the area outside the boundary indicated by DL1 in FIG. 2), Na = Na + 1. If it is displayed in the area C (the inner area of the boundary DL1 in FIG. 2), a process of setting Nc = Nc + 1 is performed. These values are sequentially stored in the memory. Thereby, the display frequency can be obtained based on the display position of the caption displayed in the operation from the start of the program.

Next, if a predetermined time set in advance in step S8, for example, 10 seconds has elapsed (Yes), the process proceeds to step S9.
In step S9, a frequency distribution is calculated.
Pa = Na / (Na + Nc)
Pc = Nc / (Na + Nc)

  Here, for example, it is determined in step S9 whether Pa is 0.5 or more. If Pa is 0.5 or more, it is determined that the frequency distribution of the subtitles displayed in the outer area of the display screen is high, and it is estimated that the subtitle information is positioned as the main video and the subtitle information. Therefore, it is determined that there is no need to move the caption display (step S12). On the other hand, if it is No, since it is determined that it is difficult to view the video with the subtitle, display control for moving the subtitle to the peripheral area is performed.

  As described above, according to the caption display control technique according to the present embodiment, the frequency of the caption display position after the program of the television receiver starts is obtained, and the content of the program ( It is possible to determine whether or not the subtitles need to be moved by estimating the role / positioning of the subtitles. Therefore, since the subtitle can be displayed at the position intended by the program provider (creator), there is an advantage that it can be easily viewed in its original form.

  Next, a television receiver using the caption display control technique according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a diagram in which the display screen of the display unit 106 of the television receiver according to the present embodiment is virtually divided into regions. The screen display 111 includes a main video display 122 displayed in an area inside the broken line DL2, a caption display 123 displayed in an outer area defined by the broken line DL3 provided outside the broken line DL2, a broken line DL2, and a broken line. And a region 124 between and DL3.

  That is, in the present embodiment, the first area 122 that mainly displays video, the second area 123 that mainly displays subtitles, and the third area that can be said to be a buffer zone between the first area 122 and the second area 123. The first embodiment is different from the first embodiment in that it defines 124.

  FIG. 5 is a flowchart showing a flow of subtitle display processing according to the present embodiment. As shown in FIG. 5, first, when a program starts in step S21, initialization processing is performed in step S22. In the initialization process of step S22, 1) Whether or not subtitle movement is necessary is set. 2) Frequency parameters are set to Na = Nb = Nc = 0 and Pa = Pb = Pc = 0. Here, Nx is the subtitle display frequency in each area, and Px is the subtitle display frequency in each area (a, b, and c in order from the outside).

  Next, in step S23, it is determined whether or not there is a caption input. If Yes, the process proceeds to step S24, and the caption data is decoded. Next, in step S25, it is checked in which area of the display screen the subtitle is displayed. If it is displayed in the area A (outside area 123 indicated by DL3 in FIG. 4), Na = Na + 1 is set (step S26). If it is displayed in the area B (area 124 between DL2 and DL3 in FIG. 4), Nb = Nb + 1 is set (step S27). If it is displayed in the area C (the inner area 122 of the boundary DL1 in FIG. 4), a process of setting Nc = Nc + 1 is performed (step S28). These values are sequentially stored in the memory. Thereby, the display frequency can be obtained based on the display position of the caption displayed in the operation from the start of the program.

Next, it is determined whether or not a predetermined time set in advance in step S29, for example, 10 seconds has elapsed, and if it has elapsed (Yes), the process proceeds to step S30. In step S30, a frequency distribution is calculated.
Pa = Na / (Na + Nb + Nc)
Pb = Nb / (Na + Nb + Nc)
Pc = Nc / (Na + Nb + Nc)

  Here, for example, it is determined in step S31 whether Pa is 0.5 or more. If Pa is 0.5 or more, it is determined that the frequency distribution of the subtitles displayed in the outer area of the display screen is high, and it is estimated that the subtitle information is positioned as the main video and the subtitle information. Therefore, it is determined that there is no need to move the caption display (step S34). On the other hand, if No, it is determined whether or not all of Pa, Pb, and Pc satisfy the condition of, for example, between 0.30 and 0.36. When all these conditions are satisfied (Yes), the main is determined to be character information, and the subtitle is not moved (step S34). In the case of NO, since it is determined that it is difficult to view the video with subtitles, display control for moving the subtitles to the surrounding area is performed (step S33).

  As described above, according to the subtitle display control technique according to the present embodiment, in addition to the display control according to the first embodiment, it is possible to detect a case where the main is determined to be character information, In such a case, by performing display control that does not move the subtitle display, finer control can be performed and the user can easily view.

  Note that the position of the boundary region DL according to the first embodiment and the second embodiment may be configured to be able to be changed by a user operation or in an initial setting of the manufacturer. In addition, depending on whether or not subtitles can be moved based on the frequency obtained in the above procedure, and subsequent subtitle movements by user operations, whether or not subtitles can be moved by automatic determination and subsequent subtitle movements by user operations Based on the frequency, it is also possible to move the boundary region so as to approach the judgment by the user operation.

  The present invention can be used for display control of a television receiver.

It is a functional block diagram which shows the example of 1 structure of the television receiver by the 1st Embodiment of this invention. It is a figure which shows the example of a screen display of the monitor part of a television receiver, and is the figure which divided the display screen into the area | region virtually. It is a flowchart figure which shows the flow of a caption display process by this Embodiment. FIG. 4 is a diagram in which the display screen of the display unit of the television receiver according to the present embodiment is virtually divided into regions. It is a flowchart figure which shows the flow of a caption display process by this Embodiment. It is a figure which shows the example of a display of a general television receiver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Tuner part, 102 ... Separation part, 103 ... AV decoder, 104 ... Teletext decoder, 105 ... AV display output part, 106 ... Monitor part for display, 107 ... CPU, 108 ... Memory, 109 ... Interface part.

Claims (7)

A television display device capable of displaying subtitles,
Means for obtaining the frequency of the position where the subtitle is displayed on the display screen;
Means for determining the type of display based on the frequency;
A television receiving apparatus comprising: means for determining whether or not to perform display control for moving a display position of a caption so as not to make it difficult to view the video with the caption based on the determination.   The means for determining the type of display determines that the frequency determined by the means for acquiring the frequency of the position where the caption is displayed is the type of video subject when the frequency is high on the center side of the display screen, 2. The television apparatus according to claim 1, wherein when it is high on a peripheral side of the display screen, it is determined that the video and the subtitle display coexist.   The means for determining the display type is based on the virtual first boundary line for determining the position where the caption is displayed, and the frequency of the inner region is higher than the frequency of the outer region. The television receiver according to claim 1, wherein the determination is based on whether the value is high.   The means for determining the type of display determines that the frequency determined by the means for acquiring the frequency of the position where the caption is displayed is the type of video subject when the frequency is high on the center side of the display screen, 2. The display device according to claim 1, wherein when it is high on a peripheral side of the display screen, it is determined that the video and the subtitle display coexist, and when it covers the entire area, it is determined that the display type is mainly a character broadcast. The television apparatus as described.   In addition to the first boundary line, by adding at least one second boundary line having a certain width and taking into account the frequency between the first boundary line and the second boundary line, The television apparatus according to claim 3, wherein the display of subtitles in the entire display screen is determined to be substantially equal.   6. The television apparatus according to claim 3, further comprising operation means for changing the boundary line.   The television apparatus according to claim 1, wherein the frequency is sequentially acquired after a displayed program or content is changed.

Images