JP3083195B2 - Subtitle super display moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for moving a superimposed subtitle displayed on a screen of a television or the like by moving the superimposed display to another portion of the screen. recent years,
In movie software converted for television and the like, there is a so-called cinemascope size for displaying a movie at the same aspect ratio. As shown in FIG. There is one in which mask portions are provided at the top and bottom, and a subtitle super display is provided at the lower masked portion. As shown in FIG. 2C, when this movie software is displayed on a high-definition screen having an aspect ratio of 9:16, the upper and lower mask portions are cut, but the subtitle super display portion is not lost. Need to be kept.

[0002]

2. Description of the Related Art In the prior art, as shown in FIG. 2C, the display of the video portion is reduced as a whole so that a superimposed subtitle display can be displayed below the display of the video portion.

[0003]

If the superimposed subtitle display portion can be displayed on a 9:16 high-definition screen without changing the aspect ratio of the movie software, there are no video signal portions on the left and right sides of the high-definition screen. As a result, the display screen cannot be used effectively. For example, as shown in FIG. 2B, the superimposed subtitle display can be moved, and the superimposed subtitle display is moved while the video portion is being displayed, and then converted to a video signal having an aspect ratio of 9:16 for Hi-Vision. By doing so, the superimposed subtitle display portion can be prevented from being lost, and the display screen of the high-definition screen can be used effectively. The present invention moves the superimposed subtitle display so that it can be displayed at an arbitrary position in the video display portion ,
The purpose is to scoop .

[0004]

FIG. 1 is a block diagram of an electric circuit of a subtitle super-display moving apparatus according to an embodiment of the present invention. As shown in FIG. A character detection unit 6 for detecting and outputting a character signal of a subtitle super display portion from the converted luminance signal
A CPU 10 that stores a character signal from the character detection unit 6 as data in the memory 11, reads and outputs the data,
A first character masking circuit 7 for masking and outputting a character signal in a subtitle super-display portion of the luminance signal; A second character masking circuit 2 for masking and outputting a character signal of a subtitle super-display portion from a color difference signal separated from a video signal and converted to a digital signal, and a second character masking circuit 2 And a second switch 3 for switching and outputting the output from the memory and the character signal read from the memory. As the character detection unit 6, the luminance signal input through the high-pass filter 12 and the luminance signal directly input And an output from the adder 13 by comparing the output from the adder 13 with the luminance level difference between the character signal and its background color as a reference voltage. In the comparator 14, and to detect the character signal of subtitles display portion.

[0005]

According to the present invention, a luminance level difference between a character signal and its background color is set as a threshold by using a luminance signal separated from a video signal for a subtitle super-display portion in the video signal. Only a character signal having a high luminance is detected by the character detection unit 6, stored in the memory 11, read out from the memory 11 at a position desired to be displayed on the screen, and output by switching the switches 3 and 8 to display the image. It becomes possible to move and display the subtitle super display at an arbitrary position.

[0006]

FIG. 1 is an electric circuit block diagram of a subtitle super-display moving device according to an embodiment of the present invention. Reference numerals 1 and 5 denote input terminals for inputting a color difference signal separated from a video signal and converted into a digital signal from an input terminal
A luminance signal separated from the video signal and converted into a digital signal is input from an input terminal 5, the luminance signal is branched via the input terminal 5, one is input to a character detection unit 6, and the other is a first character It is input to the mask circuit 7. The character detection unit 6 includes a high-pass filter 12, an adder 13, and a comparator 14. The character detection unit 6 branches the luminance signal input and inputs one directly to the adder 13, and the other to the adder via the high-pass filter 12. 13, the two inputs are added by the adder 13 and output, so that only the outline of the character is emphasized so that the outline of the character to be detected is not lost.

The output (A) from the adder 13 is
The luminance level difference between the character signal and its background color is set as a reference voltage (B), and the input terminal 1 of the comparator 14
5, the comparator 14 compares the output from the adder 13 with the reference voltage, and outputs a signal when A> B, so that the luminance between the character signal and its background color is output. Only the character signal with high luminance is detected and output using the level difference as a threshold. The output from the comparator 14 is input to the CPU 10, and the CPU 10 stores the input as data in the memory 11. A luminance signal from the input terminal 5 is input to the first character mask circuit 7,
The color difference signal input from the input terminal 1 is input to the second character mask circuit 2, and the CPU 10 receives a horizontal synchronizing signal and a vertical synchronizing signal synchronized with the video signal input to the circuit. The display position of the character signal is detected by a counter inside the CPU 10, and the control signal is transmitted to the second
Type in the character mask circuit 2 and the first character mask circuit 7, since the second character mask circuit 2 and the first character mask circuit 7 subtitles portion becomes unnecessary, the second character mask circuit 2, a color difference signal The character signal of the superimposed subtitle portion is masked, and the first character masking circuit 7 masks the character signal of the superimposed subtitle portion of the luminance signal.

The output from the second character mask circuit 2 is the second
The input to the switch 3 and the output from the first character mask circuit 7 are input to the first switch 8. CPU1
At 0, the input horizontal synchronizing signal and vertical synchronizing signal are counted, the character signal stored in the memory 11 is read out and output at a predetermined character signal display position, and the second switch 3 and the first Input as a switching control signal of the switching device 8,
By switching the output from the second character mask circuit 2 and the first character mask circuit 7 to be inputted to the second switch 3 and the first switching unit 8, a character signal level applied to the input terminal 4 and 9,
A color difference signal and a luminance signal on which a character signal is superimposed are output. By selecting a timing for reading a character signal from the memory 11 by inputting a control signal to the CPU 10, the display position of the character signal can be set arbitrarily. Therefore, as shown in FIG. The display portion can be moved and displayed on the video display portion. As described above, to one input terminal 4 and 9 of the second switch 3 and the first switching unit 8, and then can enter text signal level from CPU10 of the output register such, the second switch 3 In the first embodiment, the color of the display character can be selected based on the same character signal level, and the first switch 8 allows the luminance of the display character to be set arbitrarily so that the superimposed subtitle display portion is easy to see.

[0009]

As described above, according to the present invention,
It is possible to move the superimposed subtitle display portion to an arbitrary position in the video display for display, move the superimposed subtitle display into the video display portion, and then convert it to a video signal having an aspect ratio of 9:16 for Hi-Vision. By doing so, the superimposed subtitle display portion can be prevented from being lost, and the display screen of the high-definition screen can be effectively used. In addition, you can select the brightness and color of the displayed characters.
In this way, the subtitle super-display portion becomes easier to see.

[Brief description of the drawings]

FIG. 1 is an electric circuit block diagram of a subtitle super-display moving device, showing one embodiment of the present invention.

FIGS. 2A to 2C are explanatory diagrams of display positions on a subtitle supermarket screen.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 input terminal 2 second character mask circuit 3 second switch 4 input terminal 5 input terminal 6 character detection circuit 7 first character mask circuit 8 first switch 9 input terminal 10 CPU 11 memory 12 high-pass filter 13 adder 14 comparison Unit 15 input terminal

Claims (1)

(57) [Claims] 1. A luminance signal separated from a video signal and converted into a digital signal, and a high-pass filter for the same luminance signal.
An adder that adds the output signal and outputs the result, and a character signal and the
The luminance level difference between the background colors of
Compare with the output from the device and compare the subtitle super display characters
A comparator that detects and outputs a signal and a character signal from the comparator is stored in memory as data, read out and output
A CPU for outputting an arbitrary character signal level; a first character mask circuit for masking and outputting a character signal in a subtitle super-display portion of the luminance signal; an output from the first character mask circuit; A first switch for switching and outputting a character signal read out from a video signal, and a second character mask circuit for masking and outputting a character signal of a subtitle super-display portion from a color difference signal separated from a video signal and converted to a digital signal; A second switch for switching and outputting the output from the second character mask circuit and the character signal read from the memory, wherein the second switch is provided to the second switch by the CPU.
And read from the memory
The color of the character signal is selected and the first switch is
The character signal level from the CPU is input to the memory
A superimposed subtitle display moving device, wherein the luminance of a character signal read out of a subtitle is set arbitrarily .