JP3098389B2 - Super signal synthesizer and super signal synthesis method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting studio transmission system, and more particularly to a super signal synthesizer.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing a configuration of a conventional example of a super signal synthesizing device, and FIG. 4 is a diagram showing an example of a screen effect according to the conventional example shown in FIG.

The apparatus shown in FIG. 3 comprises a super signal generating circuit 104, a key signal generating circuit 105, and a video synthesizing circuit 102 for synthesizing respective outputs of the super signal generating circuit 104 and the key signal generating circuit 105. The super signal generation circuit 104 includes a non-addition mixing circuit 114 and a switch 115
, And the key signal generation circuit 105 includes a non-addition mixing circuit 123 and a switch 123.

A video input signal (e) is supplied to a video signal input terminal 1
01 and supplied to the video compositing circuit 102. The first super signal (A) is a super signal input terminal 111
Meanwhile, the second super signal (b) is supplied to the non-addition circuit 114 via the super signal input terminal 112, respectively. The output signal of the non-addition circuit 114 is supplied to the switches 115 and 1
24 respectively. The color signal is input terminal 11
3 to the switch 115.

The first super key signal is supplied to the super key input terminal 121, and the second super key signal is supplied to the non-addition mixing circuit 1 via the super key input terminal 122.
23. The output signal of the non-additive mixing circuit 123 is supplied to the switch 124. The output signals (f) and (g) of the switches 115 and 124 are supplied to the video synthesizing circuit 102. The output signal of the video synthesizing circuit is supplied to an output terminal 103.

The switches 115 and 124 are provided to determine the function of the effect when superimposing. The output of the non-additive mixing circuit 114 is: (1) a coloring mode for superimposing a color signal; ) Self key mode in which a key signal is generated by the super signal itself. (3) The effect of the superimpose is determined by the external key mode in which a key signal is generated by the super key signal .

[0007] In the effect example shown in FIG.
The super signals (a) and (b) and the first and second super key signals (c) and (d) are used to combine the video input signal (e) with the super signal in the external key mode.

In the conventional apparatus shown in FIG. 3 described above, when superimposing, a switch for determining the function of the effect is provided at the subsequent stage of the non-additive mixing circuit for a plurality of super input signals. As a superimposing effect, only one type can be selected. For this reason, there is a problem that colors of a plurality of superimpose signals are specified.

A super signal synthesizing apparatus for synthesizing a plurality of superimposed signals with different colors is disclosed in Japanese Patent Application Laid-Open No. 4-274680. In this apparatus, a plurality of superimpose signals are synthesized with different colors by providing a back color generation circuit individually corresponding to the superimpose signals.

[0010]

The conventional apparatus shown in FIG. 3 has a problem that the colors of a plurality of superimposed signals are specified.

In the case of providing a back color generating circuit individually corresponding to the superimpose signal, the number of the back color generating circuits required for the number of superimposed signals is required, so that the circuit configuration becomes complicated and the manufacturing is complicated. There is a problem that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is directed to a super signal capable of combining a plurality of superimposed signals with different colors with a simple circuit configuration. An object of the present invention is to realize a combining device and a super signal combining method.

[0013]

SUMMARY OF THE INVENTION A super signal synthesizing apparatus according to the present invention generates a super output signal and a super key output signal from a coloring signal and a super key input signal which are inputted in combination with a super input signal to perform image synthesis. A super signal synthesizing device, comprising a gate circuit that inputs the super input signal and the coloring signal, and gates the coloring signal according to the super input signal, and switches between the gate circuit output and the super input signal. A first switch for generating a coloring effect according to the content of the super input signal, and switching between the super key input signal and the super input signal to generate a coloring effect according to the content of the super input signal. A second switch, and a colored signal input in combination with the super input signal and the switch. A first non-addition mixing circuit, which is provided in plurality in accordance with a park key input signal, inputs respective outputs of the plurality of first switches, performs non-addition synthesis, and outputs the super output signal as the super output signal; A second non-additive mixing circuit that inputs each output of the second switch, performs non-additive synthesis and outputs the superkey output signal, a video input signal, and an output of the first non-additive mixer circuit. characterized by comprising an image combining circuit for combining the output signal of the signal and the second non-additive mixing circuit.

The super signal synthesizing method according to the present invention generates a super output signal and a super key output signal from a coloring signal and a super key input signal which are inputted in combination with a super input signal to perform image synthesis. And a gate unit for inputting the super input signal and the coloring signal, and gating the coloring signal according to the super input signal, and switching between the gate unit output and the super input signal to switch the super input signal. First switching means for generating a coloring effect according to the content, and switching between the super key input signal and the super input signal to switch on the wear according to the content of the super input signal.
A plurality of second switching means for generating a color effect are provided in accordance with the coloring signal input in combination with the super input signal and the super key input signal; A first non-addition mixing means for inputting each output, performing non-additional synthesis and outputting as the super output signal, and inputting each output of the plurality of second switching means and performing non-additional synthesis to obtain the super key A second non-additive mixing means for outputting as an output signal; a video input signal; a video synthesizing means for synthesizing an output signal of the first non-additive mixing means and an output signal of the second non-additive mixing means. It is characterized by having.

[0015]

In the super signal synthesizing apparatus and method according to the present invention, a switch is provided for each of a plurality of super signals and super key signals, so that a superimposition mode is provided for each super input signal in a coloring mode, a self key mode, or an external mode. Key mode can be selected.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of an embodiment of a super signal synthesizing apparatus according to the present invention, and FIG. 2 is a diagram showing an example of a screen effect according to the embodiment shown in FIG.

The apparatus shown in FIG. 1 comprises a super signal generation circuit 4, a key signal generation circuit 5, a super signal generation circuit 4, and a video synthesizing circuit 2 for inputting and synthesizing each output of the key signal generation circuit 5. I have. The super signal generation circuit 4 includes gate circuits 13 and 17 for limiting an area where coloring is performed in accordance with the super signal, switches 14 and 18, and a non-additive mixing circuit 19. The key signal generation circuit 5 includes a switch 23, 24 and a non-addition mixing circuit 25.

The switches 13, 18, 23 and 24 are provided for determining the coloring effect according to the mode at the time of superimposing in the same manner as in the conventional example shown in FIG. The outputs of the gate circuits 13 and 17 and the super key signal input terminals 21 and 22 are: (1) a coloring mode for superimposing a color signal; (2) a self key mode for generating a key signal by the super signal itself; and (3) a super key signal. The coloring effect according to the superimpose mode is determined depending on which of the external key modes for generating the key signal .

The signal flow in the super signal generation circuit 4 will be described. The video input signal (g) is supplied to the video synthesis circuit 2 via the video signal input terminal 1. The coloring signal (a) is supplied to the gate circuit 13 via the coloring signal input terminal 11. The first super signal (b) is supplied to the gate circuit 13 and the switches 14 and 23 via the super signal input terminal 12. The second coloring signal (c) is
It is supplied to the gate circuit 17 via the coloring signal input terminal 15. The second super signal (d) is supplied to the gate circuit 17 and the switches 18 and 24 via the super signal input terminal 16. The outputs of the switches 14 and 18 are supplied to the non-additive mixing circuit 19, and the output signal of the non-additive mixing circuit 19 is supplied to the video synthesizing circuit 2.

Next, a signal flow in the key signal generation circuit 5 will be described. First super key signal (e)
Is a switch 23 via a super key signal input terminal 21.
Supplied to The second super key signal (f) is supplied to the switch 24 via the super key signal input terminal 22. The respective outputs of the switches 23 and 24 are supplied to the non-additive mixing circuit 25, and the output signal of the non-additive mixing circuit 25 is supplied to the video synthesizing circuit 2. An output signal of the video synthesizing circuit 2 is supplied to an output terminal 3.

In the example of the screen effect shown in FIG. 2, the coloring mode using the first coloring signal (a) and the first super signal (b) is executed, and further, the second super signal (d) is used.
And the second super key signal (f) is used to execute the external key mode. Non-additive mixing circuits 19, 25
Are output to the video synthesizing circuit 2 and the synthesized output (nu) is output to the video signal output terminal 3.
Output to

[0022]

Since the present invention is configured as described above, it has the following effects.

In each of the first and second embodiments, a switching mode is provided for each of a plurality of super input signals and super key signals, so that a coloring mode is provided for each super input signal. It is possible to select between the self key mode and the external key mode, and it is possible to apply different colors to a plurality of figures with a simple configuration, and the function can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a screen effect according to the embodiment shown in FIG. 1;

FIG. 3 is a diagram showing a configuration of a conventional example.

4 is a diagram showing an example of a screen effect according to the conventional example shown in FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 video signal input terminal 2 video synthesis circuit 3 video signal output terminal 4 super signal generation circuit 5 key signal generation circuit 11,15 coloring signal input terminal 12,16 super signal input terminal 21,22 super key signal input terminal 13,17 gate Circuit 14, 18, 23, 24 Switch 19, 25 Non-additive mixing circuit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-120901 (JP, A) JP-A-4-273778 (JP, A) JP-A-2-135984 (JP, A) JP-A-4- 274680 (JP, A) JP-A-4-253482 (JP, A) JP-A-5-48963 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 9/74 H04N 5 / 272

Claims (2)

(57) [Claims] 1. A super signal synthesizing device for generating a super output signal and a super key output signal from a coloring signal and a super key input signal inputted in combination with a super input signal to perform image synthesis, wherein the super input A gate circuit that inputs a signal and a coloring signal and gates the coloring signal with the super input signal, and switches between the gate circuit output and the super signal to produce a coloring effect according to the content of the super input signal. A first switch that switches between the super key input signal and the super input signal to generate a coloring effect according to the content of the super input signal;
Are provided in accordance with the coloring signal input in combination with the super input signal and the super key input signal. The outputs of the plurality of first switches are input, and non-additional synthesis is performed to obtain the super. A first non-additive mixing circuit that outputs as an output signal; and a second non-additive mixing circuit that inputs each output of the plurality of second switches, performs non-additive synthesis, and outputs the superkey output signal. When Super signal synthesizing apparatus characterized by comprising an image input signal, a video combining circuit for combining the output signal of said first of said second non-additive mixing circuit output signal and the non-additive mixing circuit. 2. A super signal synthesizing method for generating a super output signal and a super key output signal from a coloring signal and a super key input signal inputted in combination with a super input signal and performing image synthesis, wherein the super input A gate means for inputting a signal and a coloring signal, and gating the coloring signal by the super input signal, switching between the gate means output and the super signal to produce a coloring effect according to the content of the super input signal And first switching means for switching between the super key input signal and the super input signal to generate a coloring effect according to the content of the super input signal. A plurality of color signals and the super key input signal. A first output means for inputting each output of a plurality of first switching means, performing non-additive synthesis, and outputting as the super output signal
A non-additive mixing means for inputting each output of the plurality of second switching means, performing non-additive synthesis and outputting as the super key output signal, a video input signal, Super signal combining scheme characterized by comprising an image synthesizing means for synthesizing the output signal of the output signal and the second non-additive mixing means of said first non-additive mixing means.