JP3123243B2 - Caption vertical / horizontal conversion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vertical / horizontal conversion of subtitles when converting an NTSC screen to a wide screen.

[0002]

2. Description of the Related Art Recently, a cinema-size movie has been transferred to NTSC.
There are a lot of software in the system. Since the Cinesco size is landscape, there are no video signal portions (hereinafter referred to as black stripes) at the top and bottom of the screen, but subtitles are usually included in this portion.

[0003] However, if this software is converted to a wide screen and projected, the screen is filled with the picture part and the subtitle part protrudes from the screen.

Accordingly, a technique has been developed in which the character portion of the caption is extracted and overwritten on the lower portion of the screen.

The method will be described with reference to FIGS.
First, a picture signal in a portion where a caption is overwritten and a character signal in the caption are extracted from one picture signal. Then, the character signal is overwritten on the picture signal to create a new picture signal, and the signal is used as the signal in which the caption is overwritten.

[0006]

In the above method, the subtitles can be displayed only in the lower part of the screen in any case.

However, in the actual software, not only the center part but also the lower part is important in the composition of the picture on the screen, and the picture may be difficult to see by overwriting the subtitle.

In view of the above-mentioned drawbacks, an object of the present invention is to convert horizontal subtitles written on black stripes into vertical subtitles in addition to the conventional horizontal subtitles and display the converted subtitles.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a video signal of a cinesco-size video signal in an NTSC system.
No video of video software stored at 4: 3 screen size
A subtitle detection circuit that detects subtitles inserted in the signal portion;
The subtitle signal detected by the detection circuit is converted into a character signal.
Character recognition circuit and subtitle horizontally written to the character signal
To vertical subtitles or from vertical subtitles to horizontal
Configuration equipped with a vertical / horizontal conversion processing circuit for converting to written subtitles
The horizontal / horizontal conversion process of the display caption
The character signal converted on the road
Image synthesized by a synthesis circuit that synthesizes by overwriting the image signal
Display means for displaying the signal on the screen
Display video signal from NTSC screen display to wide screen display
When the subtitle is displayed, the character signal
Select between horizontal display and vertical display by processing in the circuit.
It is one that can be selected.

[0010]

According to the present invention, the horizontal writing subtitle can be converted to the vertical writing and the vertical writing subtitle can be converted to the horizontal writing by the above configuration, and the horizontal writing subtitle or the vertical writing subtitle can be freely selected depending on the screen condition. Can be.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a caption detection circuit, 2 is a character recognition circuit, 3 is a signal storage circuit, 4 is a vertical / horizontal conversion processing circuit, and 5 is a circuit for overwriting a character signal on a picture signal. The input video signal A is divided into a picture signal B and a caption signal C by a caption detection circuit. The picture signal is sent to the synthesis circuit as it is, and the caption signal is sent to the character recognition circuit. The caption signal is converted to a character signal D by a character recognition circuit and is sent to a signal storage circuit once. The character signal E extracted from the signal storage circuit is subjected to vertical / horizontal conversion processing by a vertical / horizontal conversion processing circuit and sent to a synthesizing circuit.

The picture signal B sent from the caption detection circuit is overwritten by the character signal F sent from the vertical / horizontal conversion processing circuit in the synthesizing circuit, and a new video signal G is output. Regarding the subtitle vertical / horizontal conversion system configured as described above,
The operation will be described with reference to FIG.

First, the size of one character is determined. A cursor is generated on the screen in advance, and the start portion of the subtitle and the size of the character are determined using the cursor. Next, the recognition of characters can be easily performed by judging whether or not the signal constitutes a character for each dot in one horizontal line using digital conversion of the signal. Next, in the vertical / horizontal conversion process of characters, FIG. 2 shows a case where one subtitle has two lines and two characters are written in one line for easy understanding.
Further, the size of the character is set to 10 vertical and horizontal lines and 10 horizontal dots. Here, the signals constituting the character ○ are a (1,1) to a (10,10), the signals constituting the character △ are b (1,1) to b (10,10), The signals that form the character □ are c (1,1) to c (10,10), and the signals that form the character X are d (1,1) to d (10,10). To convert these characters vertically and horizontally, all the signals are first stored in a signal storage circuit, and character signals c (1,1) to c (1,1) are stored in a certain horizontal line M.
0) and a (1,1) to a (1,10) are called and the next horizontal line M +
1, the character signals c (2,1) to c (2,10) and a (2,1) to a (2,10) are called out.
Call (10,1) -c (10,10) and a (10,1) -a (10,10).
Similarly, for the second character, a character signal d (1,
1) to d (1,10) and b (1,1) to b (1,10), and character signals d (10,1) to d (10,10) and b (10,10) are added to the horizontal line N + 9. 1)
Call ~ b (10,10). At this time, the space between the columns is determined from between the rows by using the conversion circuit. The vertical / horizontal conversion process of the caption is performed in this manner. Then, a new video signal is output by overwriting the character signal obtained by subjecting the picture signal to vertical and horizontal conversion by the synthesizing circuit. Here, the conversion from vertical to horizontal has been described, but the same applies to conversion from horizontal to vertical.

[0015]

As described above, the subtitle state (horizontal writing or vertical writing) can be freely selected by the subtitle vertical / horizontal conversion device of the present invention.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a subtitle vertical / horizontal conversion system according to an embodiment of the present invention;

FIG. 2 is a diagram showing signals of a subtitle vertical / horizontal conversion system according to an embodiment of the present invention;

FIG. 3 is a block diagram showing a configuration of a conventional subtitle conversion system.

FIG. 4 is a diagram showing signals of a conventional subtitle conversion system.

[Explanation of symbols]

 C1 Caption detection circuit C2 Character recognition circuit C3 Signal storage circuit C4 Vertical / horizontal conversion processing circuit C5 Synthesis circuit A Input video signal B Picture signal C Caption signal D Character signal input to signal storage circuit E Character signal output from signal storage circuit F Character signal subjected to vertical / horizontal conversion processing G New video signal output from the combining circuit a Character signal composing the character a b Character signal c composing the character c △ Character c c Character signal that constitutes the character x

Claims (1)

(57) [Claims] 1. A video signal of a cinesco size is transmitted in an NTSC format.
Non-display of video software stored at 4: 3 screen size
Caption detection circuit that detects captions inserted in the image signal part
And converts the subtitle signal detected by the detection circuit into a character signal.
A character recognition circuit for converting the
Convert subtitles to vertical subtitles or vertical subtitles
And a vertical / horizontal conversion processing circuit for converting from horizontal to subtitles.
The character signal converted by the vertical and horizontal conversion processing circuit is
A video signal synthesized by overwriting a video signal of CineSco size
Signal from NTSC screen display to wide screen display
When displaying the subtitle, the character signal displayed
Horizontal writing display and vertical writing table
A display subtitle vertical / horizontal conversion device , wherein the display can be selected .