JP2007243292A - Video display apparatus, video display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display apparatus wherein a caption part can be operated independently of a video image. <P>SOLUTION: The video display apparatus includes: a tuner 1; a caption separation circuit 2; a memory 3 for storing caption data; a caption control means 4; an operation means 5 (remote controller); a display control means 6; and a video display means 7. The caption control means 4 selects a caption to be displayed on the video display means 7 according to an operation signal from the operation means 5. The display control means 6 composes caption data selected by the caption control means 4 with video data to display the combined data to the video display means 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention particularly relates to a video display apparatus capable of operating subtitles independently of video.

Some videos, like movies, have subtitles along with images. In addition, there are stock price information and text broadcasting for the hearing impaired.
As an operation of subtitles in a conventional video display device, there has been an invention in which, for example, a video with subtitles is recorded once, and scroll display is performed by changing the number of subtitle lines according to the playback speed.
JP 2002-33993 A

By the way, there are cases where the reading of subtitles is not finished or there is a case where it is desired to check only the subtitle portion of the text broadcast, such as confirmation of stock prices.
However, since the subtitles cannot be operated and displayed independently when viewing the video with subtitles being broadcast, there is a problem that only the subtitle portion cannot be returned and confirmed.
The present invention has been made in view of such a situation, and an object thereof is to provide a video display device capable of operating a subtitle portion independently of a video.

In order to solve the above problems, the present invention has the following configuration.
The gist of the present invention is a caption separation circuit that separates video data and the caption data from a video signal including caption data;
A memory for storing the caption data;
Subtitle control means for selecting subtitles to be displayed on the video display device in accordance with an operation signal from the operation means;
The video display device further comprises: display control means for displaying the caption data selected by the caption control means and the video data together on the video display device.
Further, the gist of the present invention resides in a video display device characterized in that the subtitle can be scrolled in the reverse direction independently of the video by the subtitle control means and the display control means.
The gist of the present invention resides in a video display device characterized in that the return method from the past subtitle displayed by the reverse scroll to the current subtitle is fast-forward or instantaneous return.
The gist of the present invention resides in a video display device characterized in that the display color of the video display device is different from that during normal subtitle display when displaying past caption data stored in the memory. .
Further, the gist of the present invention is that subtitle data is tagged by the operation means, and the subtitle data tagged by the operation signal from the operation means can be displayed independently of the video. It exists in the characteristic video display device.
The gist of the present invention is that video data and subtitle data are separated from a video signal including subtitles, the subtitle data is stored in a memory, and the subtitle data to be displayed on the video display device is selected by an operation process, The subtitle data and the video data selected in the operation step are combined and displayed on the video display device.
The gist of the present invention resides in a video display method characterized in that the subtitle can be scrolled in the reverse direction independently of the video.
The gist of the present invention resides in a video display method characterized in that the return method from the past subtitle displayed by the backward scroll to the current subtitle is fast-forward or instantaneous return.
The gist of the present invention resides in a video display method characterized in that the display color on the video display device is different from that at the time of normal subtitle display when displaying past subtitle data stored in the memory. .
In addition, the gist of the present invention resides in a video display method characterized in that subtitle data is tagged in the operation step, and the tagged subtitle data can be displayed independently of the video. .
The gist of the present invention resides in a program capable of executing the video display method.

  Since the video display device of the present invention always records subtitles, there is an advantage that only the subtitles can be operated and displayed independently of the video.

  Hereinafter, embodiments of the present invention will be described in detail.

<First Embodiment>
As shown in FIG. 1, the video display apparatus according to the present embodiment includes a television broadcast receiver 8 and an operation means 5 (remote control) that is an interface for operating captions. The television broadcast receiver 8 includes the following elements. That is, a tuner 1 that receives a broadcast video signal such as digital broadcast, analog broadcast, and text broadcast, a caption separation circuit 2 that separates video data and caption data from a video signal including captions, and caption data are stored. Selected by the memory 3, the video display means 7 such as a CRT monitor or a liquid crystal monitor, the subtitle control means 4 for controlling the subtitles to be displayed on the video display means 7 in accordance with the operation signal from the operation means 5, and the subtitle control means 4. The television broadcast receiver 8 includes a display control unit 6 that displays the subtitle data and the video data on the video display unit 7 together.

Next, the flow of video signal processing in this embodiment will be described. First, a video signal including subtitles received by the tuner 1 is divided into subtitle data and other video / audio data by a subtitle separation circuit 2. The video signal input to the caption separation circuit 2 may be of any type as long as it is a video signal having captions such as terrestrial digital broadcasting, BS / CS digital broadcasting, analog broadcasting, and text multiplex broadcasting. For analog broadcasting, the caption separation circuit 2 includes a caption area detection circuit and a caption detection circuit as in the invention described in Japanese Patent Laid-Open No. 9-214846, for example, and the input video signal includes captions. If subtitles are included, the video data or character data of the subtitle portion is separated from the video data and audio data other than the subtitle portion. When subtitles are not included in the input video signal, the video display method of the present invention is not applied and the input video is displayed as it is.
For digital broadcasting and text multiplex broadcasting, the subtitle separation circuit 2 is a video / audio included in data of a format compliant with the MPEG standard called TS, for example, as described in Japanese Patent Application Laid-Open No. 2002-271712. Data, subtitle data, font data, PSA / SI (program information), etc. are discriminated to determine whether the program can display subtitles. When the input video signal includes subtitles, the subtitle display portion video data and the subtitle non-display portion video data / audio data are separated from the input video signal. Since the separation of data by the caption separation circuit 2 is easy, the video data from the input video signal is preferably digitized, but may be processed and separated as analog data.

  The caption data separated from the video + audio data by the caption separation circuit 2 is stored in real time by the memory 3. Accordingly, the video itself is not recorded, but the subtitle data in the past certain time from the current moment or the range allowed by the capacity of the memory 3 is stored in the memory 3. The caption data to be displayed on the video display means 7 is selected by the operation means 5 from the caption data stored in the memory 3 and the currently broadcast caption data (operation step). The caption data selected in this operation step is selected by the caption control means 4 and transmitted to the display control means 6. The display control means 6 sends the video + audio data obtained by synthesizing the subtitle data to be displayed transmitted from the subtitle control means 4 and the already separated real-time video + audio data to the video display means 7 (control). Step), an image is displayed on the image display means 7.

  Specifically, the operation means 5 is any means that can be operated by the viewer of the video display device and can transmit the operation content to the subtitle control means 4 such as an infrared remote controller or a button provided in the video display device. It may be something like this. The operation means 5 is preferably provided with a reverse scroll button 51, a scroll button 52 or a return button 53, a tag button 55, a jump button 54, and the like as illustrated in FIG. Further, the scroll button 52 / reverse scroll button 51 and the like may be integrated, and a cross key, a jog dial or the like may be provided instead.

  The correspondence between the operation by the operation means 5 and the display on the video display device will be described. First, in the present embodiment, as shown in FIG. 3, subtitles are displayed from the bottom of the screen in the order of "Tatsuteto ...", "Nanune no ...", and "Hahifuheho ..." and scroll upward. Is the normal scroll direction. If the original subtitle character data is not in the scroll format, it is converted to the scroll format by the display control means 6 as in the invention described in Japanese Patent Application Laid-Open No. 08-107552, for example. From here, the reverse scrolling step will be described in detail with reference to the example in FIG. First, when watching a broadcast with subtitles without performing any operation, subtitles flow in the normal scroll direction together with the broadcast of the video portion as shown in FIGS. Here, when the reverse scroll button of the operation means 5 is pressed, the subtitles are scrolled in the reverse direction as shown in FIG. 4C, and the subtitles displayed in the past “Tatetsu…” are displayed by scrolling. The At this time, as long as there is no button operation, the subtitle display is stopped as it is. When such past captions are being displayed, if the display color of the captions is different from normal, it is preferable that the current captions can be identified. Further, as shown in FIGS. 4C and 4D, the background portion of past captions may be colored. Further, while the reverse scroll button is kept pressed, the reverse scroll continues as shown in FIG. 4 (d), and the past subtitle “Sashisuseso ...” in the range stored in the memory 3 is displayed. Is displayed.

  Next, the return from the past caption display to the current caption display is realized by the return button 53 or the scroll button 52 of the operation means 5. As a method for the return, there are an instantaneous return and a return by fast-forward scroll. First, the operation will be described with reference to FIG. The instantaneous return is performed by pressing the return button 53 of the operating means 5 or pressing the scroll button 52 twice when the past subtitle is displayed by reverse scrolling as shown in FIGS. 5 (a) and 5 (b). By such an operation, the display on the video display means 7 is instantaneously restored to the subtitle content currently being broadcast as shown in FIG. After the return, the subtitles are displayed by normal scrolling until the operation means 5 is operated.

  Next, an operation will be described with reference to FIG. 6 for a return by fast-forward scroll as a method for returning from the past caption display to the current caption display. In fast-forward scrolling, the scrolling direction becomes the normal scrolling direction by performing operation such as pressing the scroll button 52 while the past subtitles by reverse scrolling are being displayed as shown in FIG. The subtitle scroll can be advanced by continuing to press the scroll button 52 from the past subtitle as shown in FIG. 6 (b) to the direction of the subtitle currently being broadcast as shown in FIG. 6 (c). In this case, it is preferable to fast-forward the scroll in order to quickly return to the currently broadcast subtitle.

  It is also possible to tag past specific subtitles and directly call the past subtitles tagged by the operation of the operation means 5 and display them on the screen. Hereinafter, this operation will be described with reference to FIG. As shown in FIG. 7 (a), this tagging is performed by pressing a tag button 55 provided on the operation means 5 when a currently broadcast subtitle or a past subtitle is displayed. Can be tagged. The selection of subtitles to be tagged is preferably facilitated by the cross key, scroll button 52, or the like. Here, it is preferable that the tag is identified by adding a mark such as * to the subtitle as shown in FIG. The method for identifying subtitles with such tags is not limited to adding marks, and any method may be used as long as the display color is changed. After tagging in this way, by performing operations such as pressing the jump button 54 provided in the operation means 5, the tagged subtitles are instantaneously displayed on the screen as shown in FIG. From this state, as described above, the scroll button 52 / reverse scroll button 51 or the like can be used to perform subtitle scroll operation or return to the subtitle currently being broadcast. The subtitles thus tagged may be displayed together with the subtitles before and after the subtitle as shown in FIG. 7C, or may be configured to display only the tagged subtitles. In the latter case, it may be configured to store the tagged subtitle data separately from the time-series subtitle data when stored in the memory 3.

  As described above, the past caption display method according to the present embodiment has been described with respect to display at the same place where normal captions are displayed. However, in the present embodiment, past captions are displayed in this manner. It is not limited to the same place where normal subtitles are displayed. For example, as shown in FIG. 8, past subtitles stored in a location different from the normal subtitle display location may be displayed. In this case, a superimpose process or the like is performed in the display control means 6, and past captions are displayed at a location different from the currently broadcast caption.

  As described above, according to the present embodiment, since the subtitle is scrolled vertically and can be operated / displayed independently of the video, the subtitle can be operated in units of lines. Further, since the vertical scrolling is performed in units of lines, an effect that a large amount of information can be quickly accessed is achieved.

<Second Embodiment>
Next, a second embodiment of the present invention will be described in detail below. The configuration of the video display device of this embodiment is the same as that of the first embodiment as shown in FIG. The signal flow is the same as that of the first embodiment. The caption separation circuit 2 and the operation means 5 are also as described in the first embodiment. The difference of this embodiment from the first embodiment is that the subtitle scroll direction is not the vertical direction but the horizontal direction (left-right direction) as shown in FIG. Here, the conversion from the subtitle data being broadcast to the scroll format displayed on the video display means 7 is converted and displayed by the display control means 6 as in the first embodiment.

  The correspondence between the operation by the operation unit 5 and the display on the video display unit 7 in this embodiment will be exemplified. In this embodiment, as shown in FIG. 9, subtitles are displayed from the right side of the screen in the order of “Ah Ah”, “No good”, “Uu Uu” and scroll to the left as the normal scroll direction. . If the original subtitle character data is not in the scroll format, it is converted to the scroll format by the display control means 6 as in the invention described in Japanese Patent Application Laid-Open No. 08-107552, for example. From here, the reverse scrolling step will be described in detail with reference to the example in FIG. First, when watching a broadcast with subtitles without performing the operation, the subtitles flow in the normal scroll direction together with the broadcast of the video portion as shown in FIGS. Here, when the reverse scroll button 51 of the operation means 5 is pressed, the subtitles are scrolled in the reverse direction as shown in FIG. 10C, and the subtitles displayed in the past are “Uu Uu” and “Ye yeah ee”. Is displayed by scrolling. At this time, as long as there is no button operation, the subtitle display is stopped as it is. When displaying such subtitles in the past, if the display color of the subtitles is different from normal, it is possible to distinguish from the current subtitles. Similarly, the background portion of past captions may be colored as shown in FIGS. 10 (c) and 10 (d). Further, while the reverse scroll button 51 is kept pressed, the reverse scroll continues as shown in FIG. 10D, and past subtitles within the range stored in the memory 3 are displayed.

  Next, the return from the past caption display to the current caption display is realized by the return button or scroll button of the operation means 5. As a method of return, there are instantaneous return and return by fast-forward scroll. First, the operation in the case of instantaneous return will be described with reference to FIG. In the case of instantaneous return, when the past subtitle is displayed by reverse scrolling as shown in FIG. 11A or FIG. As shown in FIG. 11 (c), the display on the video display means 7 is instantaneously restored to the content of the currently broadcasted subtitles by an operation such as pressing the button. After the return, the subtitles are displayed by normal scrolling until the operation means 5 is operated.

  Next, an operation will be described with reference to FIG. 12 for a return by fast-forward scroll as a return method from the past caption display to the current caption display. The return by fast-forward scrolling is performed by operating the operation means 5 such as pressing the scroll button 52 while displaying past subtitles by reverse scrolling as shown in FIG. 12A, so that the scroll direction becomes the normal scroll direction. The subtitle scroll can be advanced by continuing to press the scroll button 52 from the past subtitle as shown in FIG. 12 (b) to the direction of the subtitle currently being broadcast as shown in FIG. 12 (c). Here, in order to quickly return to the currently broadcast subtitle, the scroll is preferably fast-forwarded.

  It is also possible to tag past specific subtitles and directly call the past subtitles tagged by the operation of the operation means 5 and display them on the screen. Hereinafter, this operation will be described with reference to FIG. As shown in FIG. 13 (a), when a subtitle currently being broadcast or a past subtitle is being displayed, a tag is attached to a specific subtitle by pressing the tag button 55 provided on the operation means 5. Can do. The selection of subtitles to be tagged is preferably facilitated by the cross key or scroll button 52. It is preferable that the tag is identified by adding a mark such as * to the subtitle as shown in FIG. 13 (a). The method for identifying subtitles with such tags is not limited to adding marks, and any method may be used as long as the display color is changed. Then, after tagging, by performing an operation such as pressing the jump button 54 provided in the operation means 5, the tagged subtitle is instantaneously displayed on the screen as shown in FIG. From this state, as described above, the scroll button 52 / reverse scroll button 51 or the like can be used to perform subtitle scroll operation or return to the subtitle currently being broadcast. The display of the tagged subtitles may be displayed together with the subtitles before and after the subtitles as shown in FIG. 13 (c), or only the tagged subtitles may be displayed. In the latter case, it may be configured to store the tagged subtitle data separately from the time-series subtitle data when stored in the memory 3.

  The past subtitle display method in the present embodiment has been described with respect to display in the same place where normal subtitles are displayed, but in the present embodiment, past subtitles are displayed in such normal subtitles. It is not limited to the same place where is displayed. For example, past subtitles stored in a location different from the normal subtitle display location as shown in FIG. 14 may be displayed. In this case, a superimpose process or the like is performed in the display control means 6, and past captions are displayed at a location different from the currently broadcast caption.

  As described above, according to the present embodiment, since the subtitles are displayed in one line, the screen area necessary for the subtitle display can be reduced. Therefore, there is an effect that information other than the displayed character information / caption information can be displayed at the same time. Moreover, since the subtitle display is only one line, the viewer can easily see the caption.

<Third Embodiment>
In the first embodiment and the second embodiment described above, the subtitles of the broadcast with subtitles received from the tuner 1 are operated and displayed independently of the video. However, the present embodiment is not limited to this. Never happen. For example, instead of receiving a broadcast from the tuner 1, a DVD (Digital Versatile Disk) containing video with subtitles is included in the configuration, and information such as subtitles is operated independently of the video by each configuration of the present invention when viewing this DVD -It can be displayed.

  The present invention is particularly effective when, for example, a marathon relay time display is used when the relevance between a broadcast video and subtitles is low, and the convenience of providing information by subtitles can be enhanced.

Configuration diagram of video display device in first and second embodiments Explanatory drawing of the operation means (remote control) in 1st and 2nd embodiment FIG. 3 is an exemplary diagram of subtitle display in the first embodiment. Example of reverse scrolling of subtitles in the first embodiment Illustration of instantaneous return from reverse caption scrolling in the first embodiment Illustration of fast-forward scroll return from subtitle reverse scroll in the first embodiment Example of tagging subtitles in the first embodiment FIG. 6 is an exemplary diagram illustrating a modification of the past caption display method according to the first embodiment. FIG. 6 is a diagram illustrating subtitle display in the second embodiment. Example of reverse scrolling of subtitles in the second embodiment Illustration of instantaneous return from reverse caption scrolling in the second embodiment Illustration of fast-forward scroll return from subtitle reverse scroll in the second embodiment Example of tagging subtitles in the second embodiment An exemplary view about a modification of a past caption display method according to the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tuner 2 Subtitle separation circuit 3 Memory 4 Subtitle control means 5 Operation means (remote control)
51 reverse scroll button 52 scroll button 53 return button 54 jump button 55 tag button 6 display control means 7 video display means 8 television broadcast receiver

Claims (11)

A caption separation circuit for separating video data and the caption data from a video signal including caption data;
A memory for storing the caption data;
Subtitle control means for selecting subtitles to be displayed on the video display device in accordance with an operation signal from the operation means;
A video display device comprising: display control means for displaying the caption data selected by the caption control means and the video data together on the video display device.   The video display apparatus according to claim 1, wherein the subtitle control unit and the display control unit can scroll the subtitle in the reverse direction independently of the video.   The video display device according to claim 2, wherein a return method from the past subtitle displayed by the reverse scroll to the current subtitle is fast-forward or instantaneous return.   4. The video display according to claim 1, wherein when displaying the past caption data stored in the memory, the display color on the video display device is different from that during normal caption display. 5. apparatus.   5. The subtitle data is tagged by the operation means, and the subtitle data tagged by an operation signal from the operation means can be displayed independently of the video. The video display device according to any one of the above.   Video data and subtitle data are separated from a video signal including subtitles, the subtitle data is stored in a memory, the subtitle data to be displayed on a video display device is selected by an operation step, and the subtitle data selected by the operation step is selected. A video display method, wherein subtitle data and the video data are combined and displayed on the video display device.   The video display method according to claim 6, wherein the subtitle can be scrolled in the reverse direction independently of the video.   The video display method according to claim 7, wherein a return method from the past subtitle displayed by the reverse scroll to the current subtitle is fast-forward or instantaneous return.   9. The video display according to claim 6, wherein when displaying past caption data stored in the memory, a display color on the video display device is different from that during normal caption display. Method.   10. The video display according to claim 6, wherein the subtitle data is tagged in the operation step, and the tagged subtitle data can be displayed independently of the video. Method.   A program capable of executing the video display method according to claim 6.