JPH02183676A - Title function device - Google Patents

Abstract

PURPOSE:To give plural colors to a title by storing a title picture in a digital memory, dividing a pattern into plural areas and storing each color code to the memory. CONSTITUTION:A picture signal for a title is stored in a digital memory 104, a pattern is split into plural areas and the color code of the title is set in the digital memory. Then a control means 105 stores the color code of a character of each area and when the title is displayed on the pattern, the title picture is read from the digital memory 104 synchronously with the video signal and the color code is read simultaneously from the color code memory in the readout area and a color signal is added to the readout title picture from the digital memory 104. Thus, plural colors are given to one title.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a title function device capable of adding a title to an image of a video camera or the like.

2. Description of the Related Art In recent years, many title function devices have been developed that are capable of recording and playing back videos with titles added to them.

An example of the conventional title function device mentioned above will be described below with reference to the drawings. FIG. 7 shows a block diagram of a video camera using a conventional title function device. In FIG. 7, 501 is an optical system, 502 is a C
an image sensor such as a CD; 503 is a signal processing means; 504 is a digital memory that stores the outline of the title as a binary code; 505 is a color generation means; 506 is a title insertion means by superimposing processing; 507 is a playback means; 508
is a color instruction input means for selecting a specific color. FIG. 8 shows a title screen created with a conventional camera equipped with a title function device. 801 is a title character.

The operation of the title function device used in the camera configured as described above will be described below. A title is input as an image from the optical system 501, and the title is inputted to the image sensor 502.
Convert it to an analog signal.

The signal processing means 503 performs signal processing and stores the title signal in the digital memory 504. After the title is stored in this way, the video is input in the same way. On the other hand, the color instruction input means 508 instructs the color generation means 505 to specify a color, and the color generation means 505 adds the color to the title signal.
A title insertion means 506 superimposes the video signal from the signal processing means 503 and the title signal to create a recording video signal.

Alternatively, a title signal is superimposed on the video signal of the reproduction means 507 to create a reproduced video signal. (For example, P49 of the August 1988 issue of TV Technology) Figure 8 shows a title screen created with a conventional camera with a title function device.In the conventional title function device, the color instruction input means 508 directly inputs the color to the color generation means 505. Since the color is specified, all title characters 801 have the same color.

Problems to be Solved by the Invention However, the above configuration has the problem that only one color can be specified for one title, and multiple colors cannot be assigned to one title. Ta.

In view of the above problems, the present invention provides a title function device that can add multiple colors to one title.

Means for Solving the Problems The present invention provides a digital memory for storing a title image signal, a color code setting means for setting a title color code for each area of a screen divided into a plurality of areas, and A color code memory that stores a color code signal for each area, and a readout control that reads a title image from the digital memory in synchronization with a video signal and simultaneously reads the color code for the read area from the color code memory. means, color generating means for adding a color signal to the title image read from the digital memory, and superimposing means for superimposing the colored title image signal obtained from the color generating means and the video signal; It is characterized by having the following.

According to the present invention having such characteristics, the image signal of the title is stored in the digital memory, the screen is divided into a plurality of areas, the color code of the title is set by the color code setting means, and the color The code is kept in the color code memory. When displaying a title on the screen, the title image is read out from the digital memory in synchronization with the video signal, and in the read area, the color code is simultaneously read out from the color code memory and the title image read out from the digital memory. Color signals are added to the image. By superimposing the colored title image signal and the video signal, titles colored in a plurality of colors are displayed in a superimposed manner on the screen.

Embodiment Hereinafter, a camera using a title function device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a camera using a title function device according to an embodiment of the present invention. In Figure 1, 1
01 is an optical system, 102 is an image sensor such as a CCD, and 103 is a signal processing means that adds a synchronization signal etc. to the video signal given from the image sensor 102 and performs color correction etc. A 1-bit signal that is binarized for each pixel when photographed is stored in a digital memory 104.
It also provides a video signal to the control means 105 and the superimposing section 10B. On the other hand, the operation section 107 includes a key input section 108, a color instruction input section 109, and an area specification section 110. The key input section 108 is for inputting characters, and based on the output, predetermined characters are inputted from the character generator 11 into the digital memory 104 as image data. Control means 105
As will be described later, the color code of the characters in each area is held, and when the image data is read out from the data memory, a corresponding color instruction signal is generated.
The color indicating signal is applied to color generating means 112. The color generating means 112 superimposes a color signal on a binary video signal corresponding to the characters of the title given from the digital memory 104, and is a 3.58 MHz oscillator 112a1.
It includes a phase shifter 112b that shifts its phase based on the color instruction signal, and a multiplier 112c that superimposes the signal obtained from the phase shifter 112b and the signal read from the digital memory 104. The image output is given to the superimposing section 106. The superimposing unit 106 superimposes the title image signal on the video signal.

FIG. 2 is a diagram showing the configuration of the control means 105.

In this figure, the video signal given from the signal processing means 103 is sent to the A/D converter 120 and the input interface 12.
1 to the CPU 122. Further, signals from the color instruction input unit 109 and the area designation unit 110 are also provided to the CPU 122 via the input interface 121.

The CPU 122 includes a memory 12 which, when an image is divided into a plurality of areas, includes an area for holding the color code of the title for each area and achieves the function of a color code memory.
3 is provided. The CPU 122 reads a title image from the digital memory 104 for each divided area as will be described later, and provides a corresponding color instruction signal to the color generation means 112 via the output interface 124.

FIG. 3 is an example of a title screen created by a camera equipped with a title function device according to an embodiment of the present invention.

In FIG. 3, 201 is the first area of the screen divided into four parts,
202 is the second area, 203 is the third area, 204 is the fourth area, 205 is the title in the third area, 206 is the fourth area
The title is within the area.

FIG. 4 is a diagram showing an example of the correspondence between luminance signal levels and color codes. 301 is a luminance signal, 302 is a luminance signal level and code corresponding to white, 303 is a luminance signal level and code corresponding to yellow, 304 is a luminance signal level and code corresponding to cyan, 305 is a luminance signal level corresponding to green 306 is a luminance signal level and code corresponding to magenta, 307 is a luminance signal level and code corresponding to red, 308 is a luminance signal level and code corresponding to blue,
309 is a luminance signal level and code corresponding to black.

FIG. 5 is a vector diagram of color signals used to instruct the color generation means in the embodiment of the present invention. 401 is an RY axis, 402 is a BY axis, 403 is a ■ axis showing orange and cyan colors, and 404 is a Q axis showing magenta and yellow green colors.

405 is a red color vector, 406 is a green color vector, 4
07 is a blue color vector.

The operation of the camera using the title function device configured as described above will be explained below with reference to the flowchart shown in FIG.

First, in FIG. 1, a title is input as an image from the optical system 101. The input video signal of the title is converted into an analog signal by the image sensor 102. The analog signal of this title is converted into a digital signal of this value by the signal processing means 103 and signal processing is performed. -Then, the title signal that has undergone signal processing is stored in the digital memory 104. The title can be input not only as a video, but also by directly inputting characters from the key input unit 108 and storing an image of the characters serving as the title in the digital memory 104 from the character generator 111.

Next, using the title screen created in this embodiment shown in FIG. 3 and the luminance signal level corresponding to the color shown in FIG.
5 explains the operation of adding color to the title. In this embodiment, a luminance signal is used as the video signal.

First, in FIG. 6, a region division input is awaited from the region specifying section 110. In this area division, one screen is divided into four areas, first to fourth, as shown in FIG. 3, for example. If there is a region division input in step 601, the process proceeds to step 602, where it is determined whether the title color for each region is to be automatically input or manually input.

If manual input is selected, the color code is received from the color instruction input unit 109, and the color code for each area is read into the area of the memory 123 via the input interface 121 and stored (steps 603 and 604). .

Also, if automatic coloring is set, step 60
Proceed to step 5 and determine the area by adding up each horizontal part of the divided area when the title is being projected, then add the added value and the area of the vertical part and calculate the average value of the luminance signal for each area. calculate. If this average value becomes a specific color as shown in FIG. 4, the process proceeds to step 609 where the color code is encoded and stored in the memory 123. Here CP
In steps 601 to 609, the U 122, together with the color instruction input section 109, achieves the function of a color code setting means for setting the color code of the title for the divided area.

After the color code is encoded and stored in the memory 123 in this manner, an arbitrary image is projected by the optical system 101 and a title is superimposed on the image. The operation will be described. First, the CPU 122 outputs a read signal to the digital memory 104 while the optical system is projecting a video signal.

As shown in FIG. 3, titles are inserted into the digital memory 104, for example, in a third area and a fourth area, respectively.
In step 610, in response to reading from the digital memory 104, each area 201-204 outputs a color code previously stored in the memory 123 in correspondence with that area. This color code is applied to the phase shifter 112b of the color generating means 112. Such processing is continued until the reading is completed. In this way, the phase shifter changes the phase of the oscillation output by matching the color code, and the multiplier 11
2C becomes an image signal colored with title characters and is applied to the superimposing unit 106. Therefore, a video signal of the image currently being projected by the optical system 101 and a video signal having a color corresponding to the title in the digital memory 104 are obtained from the color generating means 112, and the signals are given to the superimposing section 106. Superimpose part 1
06 outputs a video signal by superimposing these signals. By repeating such operations, it is possible to obtain a video signal in which a title is superimposed on the title, which is divided into each region and has a specific color in each region.

Next, an embodiment in which a color signal of a video signal is used to automatically set a color code will be described with reference to FIG. In this case, the color vectors of each area are averaged in the averaging process from steps 805 to 608. First, the average value of the color signal vectors in the first area 201 of the screen is calculated, and the color signal vector whose average value vector is closest to the color signal vector shown in FIG. 5 is determined and stored in the memory 123. Similarly, the average value of color signal vectors in each of the second area 202, third area 203, and fourth area 204 is calculated and stored in the memory 123. Alternatively, color instructions for each area can also be input using the color instruction input means 110. In this way, the color code of each area is stored in the memory 123.

The operation of superimposing the title image on the image signal being projected thereafter is the same as that described above.

In this way, as shown in the title screen of FIG. 2, the titles in the third distribution area and the titles in the fourth area can be given different colors.

The title signal colored by the color generating means 106 is sent to the signal processing means 103 by the title inserting means 108.
It is inserted into the video signal from the source and becomes the recorded video signal.
Although the title screen is shown divided into four areas in the embodiment, the title screen may be divided into any number of areas.

In addition, in the embodiment, the color instruction for each area of the screen was performed using the average value of the brightness signal or color signal vector of each area, but there is only one brightness signal level or color signal vector for each area of the screen. The luminance signal level and color signal vector may be determined by any method as long as the method is determined.

In addition, although the luminance signal level for color was shown in the embodiment, if there is a one-to-one correspondence between color and luminance signal level, no matter what color it is, the correspondence between color and luminance signal level will be the same. I don't mind.

Effects of the Invention As described above, the present invention stores a title image in a digital memory as a binary code, and divides the screen into a plurality of areas and stores color codes for each area. This has the effect that it is possible to add .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a camera with a title function device in an embodiment of the present invention, FIG. 2 is a detailed block diagram of a control means in the title function device in an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 11 shows the title screen created by the camera with the title function device in the example, and FIG.
...Digital memo 1c 105...control means,
106...Title respective means, 107...Operation unit, 111...Character generator,
112... Color generation means, 122... CPU1 12
3...Memo 1 Name of agent: Patent attorney Shigetaka Awano
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Claims (1)

[Claims] a digital memory for storing a title image signal; a color code setting means for setting a title color code for each area of a screen divided into a plurality of areas; and a color code setting means for storing a color code signal for each of the divided areas. a color code memory; a read control means for reading a title image from the digital memory in synchronization with a video signal and simultaneously reading a color code in the read area from the color code memory; 1. A title function device comprising: a color generating means for adding a color signal to a colored title image; and a superimposing means for superimposing a colored title image signal obtained from the color generating means and a video signal.