JP2765091B2 - Video synthesis control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video synthesizing control device, and more particularly, to a video synthesizing control device for generating a control signal for synthesizing a video signal in a television transmission device.

[Conventional technology]

2. Description of the Related Art In a television transmission device, a video synthesis control device that generates a control signal for synthesizing a video signal is well known.

 FIG. 3 is a configuration diagram of a conventional video composition control device.

FIG. 3 is a block diagram showing a typical example of a conventional video synthesizing control device, in which a video synthesizing control device 200 and a video signal synthesizing device whose video synthesis is controlled by the video synthesizing control device 200 are shown together. .

The video signal synthesizing device receives a plurality of input video signals input through the input terminals 1-1 to 1-n and synthesizes and outputs a next video signal as a next video signal following the currently output on-air video signal. It comprises a video signal generator 4, an on-air video signal generator 7 for synthesizing and outputting an on-air video signal to be output at the present time, and a switching circuit 8 for switching and outputting the outputs of these two video signal generators. Further, the video synthesis control device 200 receives an automatic control input for automatically controlling the video signal synthesis in the video signal synthesis device described above, and performs an automatic control input processing unit for performing the input processing.
21; an automatic control data generator 22 for generating automatic control data in response to an output of the automatic control input processor 21; and a next control signal required for synthesizing the next video signal in response to the output of the automatic control data generator 22. , And an on-air control signal generator 24 for generating an on-air control signal.

The next video signal generator 4 and the on-air video signal generator constituting the video signal synthesizing device are respectively the same switching circuits 2 and 5 using a cross point and a plurality of input video signals which are switched and output by the switching circuits 2 and 5. It comprises mixing amplifiers 3 and 6 for mixing and amplifying.

A plurality of input video signals input via the input terminals 1-1 to 1-n are switched by the switching circuit 2 under the control of a next control signal described later, and the switching output is switched to the mixed amplification circuit 3
, And performs image processing necessary for output display.

Similarly, the input video signals input from the input terminals 1-1 to 1-n are processed by the on-air video signal generator 27 under the control of the on-air control signal. The output signals of the above-described next video signal generator 4 and on-air video signal generator 7 are supplied to the switching circuit 8 and switched to be output to the output terminal 9 as output video signals.

Control signals for these video signal synthesizing devices are generated as follows. Automatic control input data is input to the input terminal 20. The automatic control input is supplied to the automatic control input processing unit 21. After the input processing, the output signal is supplied to the automatic control data generation unit 22 to generate and output the automatic control data. The output signal of the automatic control data generation unit 22 is supplied to a next control signal generation unit 23, generates a next control signal for synthesizing the next video, and is supplied to the next video signal generation unit 4. Further, the control data of the next control signal generator 23 is supplied to the on-air control signal generator 24, generates an on-air control signal for on-air image synthesis, and is supplied to the on-air image signal generator 7.

FIG. 4A is an explanatory diagram showing conventional automatic control data, and FIG. 4B is an explanatory diagram showing an example of screen transition. FIG. 4 (a)
As the automatic control data, event data for designating the display order and the like of the combination of the image data and determining the configuration screen are arranged in chronological order. According to the automatic control data, a next screen corresponding to the event data is first generated by the event data as shown in FIG. 4 (b). Next, by supplying the event data, the event data is transferred from the next control data to the on-air control data, and a screen as an on-air screen is generated, and a next screen with new event data is generated. The screen transition can be executed by repeating the above. As described above, conventionally, the screen transition for generating the on-air screen via the next screen by the automatic control data is performed.

[Problems to be solved by the invention]

The above-described conventional video composition control device performs a screen transition to generate an on-air screen via the next screen by the automatic control data. Therefore, when the screen is in the next state, the data is urgently changed when the screen is to be changed. There is a drawback that it is not possible to do so, and there is no choice but to transition to an on-air screen.

An object of the present invention is to eliminate the above-mentioned disadvantages and to provide a video synthesizing control device capable of responding to an emergency change of the next screen.

[Means for solving the problem]

An apparatus according to the present invention includes a switching circuit that receives a plurality of video input signals and switches between them, and a mixed amplification circuit that amplifies an output switched by the switching circuit, a next video generation unit that generates a next video, and an on-air video. Control for video signal synthesis for a video signal synthesizing apparatus for synthesizing and outputting a video signal, comprising an on-air video generation unit for generating a video signal, and a switching circuit for switching and transmitting the outputs of the next video generation unit and the on-air video generation unit In a video synthesis control device that generates a signal, a manual control input processing unit that performs input processing of a manual control input for manually controlling the synthesis of a video signal, and an automatic control input for automatically controlling the video signal generation device. An automatic control input processing unit for performing input processing;
A manual control data generator for generating manual control data from the manual control input processed by the manual control input processor; and automatic control data generated from the automatic control input processed by the automatic control input processor. An automatic control data generating unit, and receiving the output of the manual control data generating unit and the automatic control data generating unit, and controlling the next video signal generating unit to perform output control of a next video subsequent to the currently output on-air video. A next control signal generating unit for generating a next control signal to be controlled; a buffer memory unit as a data buffer in a next control signal generating process in the next control signal generating unit; and receiving an output of the next control signal generating unit to receive a next video. Generating the on-air image signal so as to perform on-air image output control corresponding to the output control; Generates air control signal for controlling the configured and a air control signal generating unit.

〔Example〕

Next, the present invention will be described with reference to the drawings. First
FIG. 1 is a configuration diagram of an embodiment of a video composition control device of the present invention. In the embodiment shown in FIG. 1, the next video signal generator 4, on-air video signal generator 7, and
Switching circuit 8 and video synthesizing control device directly related to the present invention
Consists of 100. Further, the video synthesis control device 100 includes a manual control input processing unit 13, a manual control data generation unit 14, an automatic control input processing unit 15, an automatic control data generation unit 16, a next control signal generation unit 17, a buffer memory 18, and an on-air control. The signal generator 19 is provided.

 Next, the operation of the embodiment shown in FIG. 1 will be described.

Input video signals are supplied to the input terminals 1-1 to 1-n. These input video signals are output to the next video signal generator 4.
And the output signal is subjected to video processing by the mixing amplifier circuit 3. Similarly, input terminals 1-1 to 1
The −n input video signal is processed by the on-air video signal generation unit 7 including the switching circuit 5 and the mixed amplification circuit 6. The output signals of the next video signal generator 4 and the on-air video signal generator 7 are supplied to a switching circuit 8 and switched,
It is output to the output terminal 9 as an output video signal. Control signals for these video signal synthesizing devices are generated as follows.

Manual control input data is input to the input terminal 10. This manual control input is supplied to the manual control input processing unit 13,
After receiving the input processing, it is supplied to the manual control data generation unit 14. On the other hand, data of an automatic control input is input to the input terminal 11, and the automatic control input is supplied to the automatic control input processing unit 15 and subjected to input processing. The output signal of the automatic control input processing unit 15 is supplied to the automatic control data generation unit 16. Manual control data is output from the manual control data generator 14 and automatic control data is output from the automatic control data generator 16 .These control data are supplied to a next control signal generator 17 and a next control signal for the next is output. It is supplied to the video signal generator 4. The data of the next control signal generator 17 is connected to the buffer memory 18 and temporarily stores the data. Further, the next control signal output from the next control signal generator 17 is also supplied to an on-air control signal generator 18, generates an on-air control signal for on-air, and supplies this to the on-air video signal generator 7.

FIG. 2 shows a specific example of control based on the next video screen, the on-air video screen, and control signals at that time.

The basic operation is the same as the operation described in the conventional example based on FIG. 4 (b).

In step 2- (1) of FIG. 2, first,
3A and 3B show a next video screen and an on-air video screen corresponding to the event data. In step 2- (2), an example of a next video screen when the event data corresponding to the next screen in step 2- (1) is corrected by manual control data and changed to event data 'is shown. The arrow in the screen indicates an enlarged state, and is not actually displayed as an image. In step 2- (3), step 2
-From (2), the event data for providing the next next screen was modified by manual control data and changed to event data '. At this time, the event data is temporarily stored and held in the buffer memory unit 18. Step 2- (4) shows a state in which the event data 'has been returned to the next screen from step 2- (3). As a result, the next screen and the next screen can be corrected. Thus, it is possible to cope with an urgent screen change of the next screen, and it is possible to correct the next screen in advance by the buffer memory unit 18. Furthermore, by increasing the buffer memory,
It is also clear that the next next screen can be modified in advance.

〔The invention's effect〕

As described above, according to the present invention, the control for synthesizing the next video and the on-air video in the video synthesizing apparatus is performed by using both automatic and manual control, and the next control signal is generated by generating the manual control data and the automatic control data. By generating the on-air control signal while storing in the buffer memory, the next control data for the next video can be corrected with manual control data, the next screen can be changed urgently, and the next next screen can be pre-corrected There is an effect.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a video synthesizing control apparatus according to the present invention. FIG. 2 is an explanatory diagram showing an example of a screen effect by a video signal on a next video screen and an on-air video screen in the embodiment of FIG. FIG. 3 is a block diagram of the conventional video composition control device, FIG. 4 (a) is an example of control data in the conventional video composition control device, and FIG. 4 (b) is a screen transition based on the control data of FIG. 4 (a). It is explanatory drawing which shows an example. 1-1 to 1-n input terminal 2, switching circuit 3, ...
Mixed amplification circuit, 4 ... Next video signal generation section, 5 ...
Switching circuit 6, mixed amplifier circuit 7, on-air video signal generator 8, switching circuit 9, output terminals 10, 11,
... input terminal, 13 ... manual control input processing unit, 14 ... manual control data generation unit, 15 ... automatic control input processing unit, 16 ... automatic control data generation unit, 17 ... next control signal generation unit,
18: Buffer memory unit, 19: On-air control signal generation unit, 20: Input terminal, 21: Automatic control input processing unit, 22 ...
... Automatic control data generator, 23 ... Next control signal generator, 24 ... On-air control signal generator, 100,200 ... Video synthesis controller.

Claims (1)

(57) [Claims] 1. A next video generator for receiving a plurality of video input signals and switching between them, and a mixed amplifier circuit for amplifying an output switched by the switching circuit, for generating a next video. On air
An on-air image generating unit for generating an image, and a switching circuit for switching and outputting the outputs of the next image generating unit and the on-air image generating unit, and a video signal synthesizing device for synthesizing and outputting a video signal. In a video synthesis control device for generating a control signal, a manual control input processing unit for inputting a manual control input for manually controlling the synthesis of a video signal, and an automatic control input for automatically controlling the video signal generation device An automatic control input processing unit for performing input processing, a manual control data generating unit for generating manual control data from the manual control input that has been subjected to the input processing in the manual control input processing unit, and an input processing in the automatic control input processing unit An automatic control data generating section for generating automatic control data from an automatic control input which has been performed, the manual control data generating section and automatic control data A next control signal generating unit for generating a next control signal for controlling the next video signal generating unit so as to perform output control of a next video following the currently output on-air video in response to the output of the raw unit, and the next control A buffer memory unit as a data buffer in a next control signal generation process in the signal generation unit;
An on-air control signal generator that receives the output of the next control signal generator and generates an on-air control signal that controls the on-air image signal generator so as to perform on-air image output control in response to next image output control. A video compositing control device, comprising: