JPH0638123A - Video display device - Google Patents

Abstract

PURPOSE:To facilitate the operation of adjusting the position of a title super rearranged on a display pattern when a video image of a letter box size with a title super is displayed fully on the display screen in the video display device such as a television receiver provided with a wide aspect display screen whose aspect ratio is 16:9. CONSTITUTION:A video signal of a title super is converted into digital data by an A/D converter 1 and the data are written in a frame memory 2, after the data are read again, and converted into again an analog signal by a D/A converter 4 through a signal selection circuit 3, and when the rearranged position is adjusted, a controller 5 is used to stop the write to the frame memory 2 and the rearranged title is set to a still picture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver which reproduces a horizontally long image such as cinema scope size video software on a display surface having a large aspect ratio such as 16: 9. The present invention relates to a video display device such as a machine.

[0002]

2. Description of the Related Art FIG. 6 (a) shows a display example in which cinema scope size software with a subtitle super is reproduced on a display surface having an aspect ratio of 4: 3. Hereinafter, such video software is referred to as "letterbox size".

As shown in the figure, in the case of cinemascope-sized software, there is an example in which the upper and lower parts of the image are empty spaces, and the subtitle space is inserted in the black space below by shifting the image vertically. Many.

When such software is displayed on a display surface having an aspect ratio of 16: 8, the vertical width is widened and the vertical position is moved to display the image on the full screen in order to effectively use the screen. , Move the subtitle supermarket outside the display area into the effective video area, and
Display is performed as shown in (b).

[0005]

In the conventional video display device, when the subtitle super is moved to a desired position, when the scene changes to a scene without the subtitle, the moved subtitle disappears from the display screen. It was necessary to set the software still in the scene where there was a subtitle super beforehand, and it was difficult to adjust the display position of the subtitle while the subtitle after moving was displayed.

Further, in a scene where the background brightness level of the subtitle superimpose after the movement is high, there is a problem that flicker occurs due to the brightness level difference at the boundary with the subtitle superposition, which is not preferable in terms of display quality.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a video display device capable of easily moving a subtitle super and displaying the subtitle super easy to see.

[0008]

According to a first aspect of the present invention, there is provided a video display device in which a vertical width of a video signal is enlarged to be displayed on a wide aspect display surface and is superimposed on the video signal. An image display device for displaying a subtitle super at a desired position on the display surface is provided with a means for stopping the subtitle when the subtitle super is moved to a desired position.

According to a second aspect of the present invention, the video display device enlarges the vertical width of the video signal to display it on a wide aspect display screen, and displays a subtitle superimposed on the video signal on the display screen. In the video display device for projecting at the desired position, a means for replacing an arbitrary area, which is the background of the moved subtitle super, with a predetermined video signal is provided.

Furthermore, the video display device according to claim 3 is
In a video display device that expands the vertical width of the video signal to display it on a wide aspect display screen and displays the subtitle superimposed on the video signal at a desired position on the display screen, after moving It is provided with means for lowering the brightness level of the video signal in an arbitrary area of the background of the subtitle supermarket to a predetermined brightness level.

[0011]

According to the first aspect of the present invention, the display position of the subtitle super can be easily adjusted by keeping the subtitle super after the movement still displayed.

Further, according to the second aspect, by replacing an arbitrary portion of the background of the moved subtitle super with a predetermined video signal, the moved subtitle super can be easily moved even in a scene where there is no subtitle super. You can adjust the position of.

Further, in claim 3, by lowering the brightness level of an arbitrary portion which is the background of the moved subtitle super to a predetermined brightness level, the moved subtitle is moved even in a scene without the subtitle super. Flicker at the boundary between the supermarket and the background is reduced, and the display quality of subtitles is also improved.

[0014]

EXAMPLES Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an A / D converter, 2 is a frame memory, 3 is a signal selection circuit, and 4 is a D / D converter.
An A converter and a controller 5 are the above-mentioned A / D converter 1, frame memory 2, signal selection circuit 3, and D.
The operation of the / A converter 4 is controlled to superimpose the video signal of the subtitle superimposition on an arbitrary position of the original video signal.

Next, the operation will be described. The input video signal is converted into digital data by the A / D converter 1, and as shown in FIG.
Then, the data is read in the area where the subtitle superimposition after two fields is to be inserted by the read system control signal.

Here, when the area to be read is moved, if the writing to the frame memory 2 is suspended by the write-system control signal from the controller 5, as shown in FIG. 3, the suspension of writing is released from the next frame. Until the same time, the same data for one frame immediately before the pause is repeatedly read.

The digital data read from the frame memory 2 is sent to the signal selection circuit 3 and is switched by the selection signal from the controller 5 between the original video signal data and the read caption data, and then output. It is converted back to an analog signal by the D / A converter 4 of the stage.

Therefore, according to the first embodiment, when the subtitle super is rearranged and the display position is adjusted, the operation of writing the subtitle superportion of the original video signal in the frame memory 2 is stopped and the subtitle is rearranged. Subtitles, ie,
Since the subtitle super read from the frame memory 2 is set to a still image state, the image input to the image display device such as video software does not have to be a still state.
The position of the rearranged subtitle super can be easily adjusted.

Example 2. FIG. 4 is a block circuit diagram of the second embodiment of the present invention, in which 6 represents a replacement signal generation circuit, which generates predetermined replacement signal data for replacing a desired area in the rearranged subtitle background.

Next, the operation will be described. The video signal converted into digital data by the A / D converter 1, the caption data read from the frame memory 2, and the predetermined replacement signal data from the replacement signal generation circuit 6 are input to the signal selection circuit 3. It

The controller 5 selects, from the subtitle data read from the frame memory 2, a selection signal for selecting subtitle data at a certain luminance level or higher, and replacement signal data as data of a desired area of a portion corresponding to the background of the read subtitle. Is sent to the signal selection circuit 3 to switch the original video signal data, the subtitle data, and the replacement signal data, and then sent to the next D / A converter 4 and returned to the analog signal.

Here, the selection signal for selecting the replacement signal data is output from the controller 5 so that the replacement signal area can be moved by the same amount when the subtitle reading area is moved. As a result, when the subtitle read position is adjusted, the subtitle region is represented by the replacement signal data even in a scene where the original video signal does not have a subtitle super, and therefore the adjustment becomes easy.

Therefore, according to the second embodiment, it is possible to easily adjust the position of the subtitles to be rearranged even if the input video does not have a subtitle super.

Example 3. FIG. 5 is a block diagram showing a third embodiment of the present invention, in which 7 is a subtracter, 8 is a subtraction value setting value, and is read out from the frame memory 2 in the video signal digitized by the A / D converter 1. The subtractor 7 subtracts the video signal data from the data of the desired area of the background portion of the closed caption signal, and the subtractor 7 subtracts the video signal data from the subtracted value data. The result is sent to the signal selection circuit 3. Then, after being switched to the subtitle data from the frame memory 2, the analog signal is returned by the D / A converter 4.

Therefore, according to the third embodiment, the subtractor 7 and the subtractor setting unit 8 can reduce the brightness of the video in the desired area of the rearranged background portion of the subtitle super. Flicker that occurs between the background image and the background image is reduced, and a subtitle supermarket that is easy to see can be obtained.

[0026]

As described above, according to claim 1 of the present invention, letterbox size software with subtitle super is displayed on the wide aspect display surface and the subtitle super is rearranged within the effective screen. In the video display device configured as described above, when the subtitles are rearranged and the display position is adjusted, the operation of writing the subtitle portion of the original video signal in the memory is suspended, and the rearranged subtitles are placed,
In other words, since the subtitle super read from the memory is configured to be in a still image state, video software, etc.
There is an effect that the position of the rearranged subtitles can be easily adjusted without making the image input to the image display device stand still.

Further, according to the second aspect, since the desired area in the background portion of the rearranged subtitles is replaced with another signal, the video input to the video display device has no subtitles. Even in this case, it is possible to easily adjust the position of the rearranged subtitle super.

Further, according to the third aspect, since the brightness of the image of the desired area in the background portion of the rearranged subtitles is lowered, flicker or the like generated between the subtitle and the background image is reduced. The effect is that you can get easy-to-see subtitles.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a timing diagram illustrating a normal operation of the frame memory according to the first exemplary embodiment.

FIG. 3 is a timing diagram illustrating an operation of the frame memory according to the first exemplary embodiment when the frame memory is stationary.

FIG. 4 is a block diagram showing a second embodiment of the present invention.

FIG. 5 is a block diagram showing a third embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a display position of a subtitle super and a size of a character when a letterbox size video with a subtitle super is displayed on a full 16: 9 wide aspect display surface.

[Explanation of Codes] 1 A / D converter 2 Frame memory 3 Signal selection circuit 4 D / A converter 5 Controller 6 Replacement signal generation circuit 7 Subtractor 8 Subtraction value setter

Claims (3)

[Claims] 1. A video display in which a vertical width of a video signal is expanded to be displayed on a wide aspect display surface, and a subtitle superimposed on the video signal is displayed at a desired position on the display surface. An image display device, characterized in that, when the subtitle superimpose is moved to a desired position, the device has means for stopping the subtitle superimpose. 2. A video display in which a vertical width of a video signal is enlarged to be displayed on a wide aspect display surface, and a subtitle superimposed on the video signal is displayed at a desired position on the display surface. A video display device, characterized in that the device is provided with means for replacing an arbitrary region corresponding to the background of the moved subtitle superimpose with a predetermined video signal. 3. A video display in which a vertical width of a video signal is enlarged and displayed on a wide aspect display screen, and a subtitle superimposed on the video signal is displayed at a desired position on the display screen. A video display device, characterized in that the device is provided with means for lowering the brightness level of the video signal of an arbitrary region of the background of the subtitle superimposition after movement to a predetermined brightness level.