JPH05284508A - Converted and synthesized signal processor for different kinds of video signal - Google Patents

Abstract

PURPOSE:To provide the converted and synthesized signal processor which standardizes 1 video signals different by standards to give a monitoring or picture effect. CONSTITUTION:Video signals from video signal sources 1A, 1B..., 1N different by systems are inputted to up/down converters 2A, 2B...2N respectively, and they are read out from memories by a synchronizing signal as the reference, thereby converting them to video signals of the same standards. They are supplied to a monitor device 6 through a selector 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conversion and synthesis signal processing device useful for converting video signals of different standards into video signals of the same standard for display on a monitor screen or image conversion. ..

[0002]

2. Description of the Related Art Currently, video signal standards (systems) used in various countries are NTSC system, PAL system, SECA.
In addition to the V system, HDTV system video signals and EDTD system television signals, which have a new high resolution, are used, and most of them are different in horizontal scanning frequency, video band, and frame frequency from each other. Has been done. Therefore, for example, in order to display different kinds of video signals on a single monitor TV or a multi-screen monitor TV (multivision device) via a switch, a device for keeping different kinds of video signals in a synchronous relationship with each other is required. ..

[0003]

Conventionally, when a synchronizing relationship is established between video signals of different standards, for example, a sync converter has been used, and a video signal synchronized between NTSC and HDTV, for example, could be obtained. The sync converter has a signal processing method such that the state of the difference is always constant for different speeds and different phases,
There is a problem that the price of the device becomes high. for that reason,
The fact is that it is rarely used outside of some professional groups.

[0004]

In order to solve such a problem, the present development is directed to a means for generating a synchronizing signal of a video signal of a desired system from among input video signals of different standards, and this synchronizing signal. An up / down converter that receives the output of the generation means and converts the plurality of video signals into video signals of the same standard, a selector that selects the output of the up / down converter, an output of the synchronization signal generation means and the selector. A monitor that displays a desired image according to a video signal is provided. In the second invention, the output of the up / down converter is directly input to the effector,
Various types of image conversions and effects can be displayed on the monitor screen.

[0005]

Since the video signal is converted into the video signal of the same standard by the relatively inexpensive up / down converter and the predetermined synchronizing signal is added, the apparatus for converting the video and creating the effect screen becomes inexpensive, It is easy to form various monitor screens.

[0006]

1 shows a first embodiment of the present invention, in which 1A, 1B ... 1N are video signal sources having different video signal standards, for example, # 1 is PAL and # 2 is SECAM. , #
N is NTSC, HDTV video signal source,
A computer graphic video signal source or the like is also input. 2A, 2B, ... 2N are up / down converters that convert video signals of different systems into video signals of the same standard based on a reference synchronization signal, and 3 is a video signal of the same standard. The secreter which can select and output Vs is shown. Reference numeral 4 denotes a reference signal generator, which generates a sync signal component of the video signal of the same standard to be converted. Then, the up / down converter 2A is supplied to the distributor 5,
2B ... The video signals supplied to 2N and stored in the memory are read at the same speed. Further, this synchronizing signal is also supplied to the monitor device 6 and gives synchronizing information corresponding to the video signal Vs of the same standard.

The video signal conversion / synthesis processing device of the present invention is provided with the above-mentioned structural blocks, so that, for example, the PAL system video signal of the video signal source 1A and the SECAM system video signal of the video signal source 1B, and HDTV system video signals input from other video signal sources 1N
Up / down converters 2A, 2B ... 2
At N, for example, it can be converted into a desired NTSC video signal Vs of the same standard, and can be projected on the monitor device 6 via the selector 3. In this case, the converted video signal Vs of the same standard is made into a signal of the same phase by the reference signal source 4, and the same synchronization information is also supplied from the reference signal source 4 to the monitor device 6. Therefore, the selector 3 Even when an arbitrary video signal source is selected with, it is possible to prevent the screen from being cut or disturbed. When the reference signal generator 4 outputs the video signals of the video signal source 1N in a unified manner, this video output is supplied to the sync separation circuit 8 as indicated by the dotted line to convert the separated sync information into the sync information. Based on each up / down converter 2A,
2B ... 2N can be read. If the input video signal is a composite signal, the decoders 7A, 7B ...
It is preferable to provide 7N to convert to a component color signal. In the above-described embodiment, one video signal Vs of the same standard is selected by the selector 3, but as shown in FIG. 2, if the matrix switcher 7 is used instead of the selector 3, M from N input signals are selected. It is also possible to select the M video signals and to separately project the M video signals on each monitor device 6 of the multivision 9.

FIG. 3 is a block diagram showing a second embodiment of the present invention. 1A, 1B ... 1N are video signal sources having various systems as in FIG. 1 and 10A, 10B. 1N shows an up / down converter corresponding to each of the video signal sources 1A, 1B ... 1N, and the converted video signal is configured to be a video signal Vs of the same standard, for example, an NTSC video signal. Reference numeral 20 denotes a video effector, which performs various kinds of signal processing on the plurality of video signals of the same standard, and performs picture fade-in, fade-out, scroll, wipe, etc. to form a composite screen of each signal source. However, you can apply effects. Then, this signal is sent to a single monitor screen or a TV monitor 30 of a multi-board system.
, And a special screen that combines video signals of different standards is displayed. In the case of the embodiment of the present invention, an effect screen of interest can be formed by making use of the characteristics of the image quality of each video signal. Therefore, for example, a high resolution that is enlarged by zooming up and deteriorates the resolution is required. The part to be output can output an image cut out from a video signal of HDTV system or can cut out an output video signal of computer graphic, and when used in a monitor device for providing advertisements and information by multi-vision, An excellent effect screen can be output.

FIG. 4 is a block diagram showing an example of an up / down converter. Reference numeral 41 is an A / D converter for sequentially converting an input video signal into digital data.
2 is a write signal processing unit, 43 is a field memory that can write sample data of an input video signal and read it at a predetermined speed, 44 is signal processing of the read field data, for example, frame conversion, scanning signal Is a read signal processing unit for performing interpolation, complementation, etc., and 45 is a D / A converter. Reference numeral 46 is a sync separation circuit for detecting a sync signal of the input video signal, 47 is a write clock signal generator for generating a write clock signal of the field memory, and 48 is a reference signal supplied from the outside. A read clock signal generator for generating a clock signal for reading the data in the field memory 43 at a predetermined speed, and a timing controller (CPU) 49 for controlling the overall timing of writing and reading. This up / down converter
A video signal of different standards is read by reading a video signal of different standards written in the field memory 43 of each up / down converter by a reference signal (synchronization information for making the same standard video Vs) supplied from the outside. For example, the video signal is converted into a unified NTSC system video signal, and the synchronization relationship between input video signals of different standards is converted into a unified standard video signal by matching a read timing with a reference signal source. ..

[0010]

As described above, the conversion / synthesis signal processing apparatus for video signals of different standards according to the present invention uses the up / down converter to convert the video signals of different input systems into video signals of the same standard. After the conversion to, the monitoring or image conversion is performed, so the entire device becomes cheaper, and in particular, the multi-vision image signals of different standards are projected, and effective image display is possible with the inexpensive device. It has the advantage that it can be built.

[Brief description of drawings]

FIG. 1 is a block diagram of a conversion and synthesis signal processing device between different types of video signals according to the present invention.

FIG. 2 is a block diagram of a conversion / synthesis signal processing device between different types of video signals according to another embodiment of the present invention.

FIG. 3 is a block diagram of forming an effect image between video signals of different standards.

FIG. 4 is a block diagram showing an example of an up / down converter.

[Explanation of symbols]

 1A to 1N Video signal source 2A to 2B Up / down counter 4 Reference signal source 5 Distributor 6 (9) Monitor device 7 Selector

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[Procedure amendment]

[Submission date] December 4, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art Currently, video signal standards (methods) used in various countries are NTSC, PAL and SECA.
In addition to M system , HDTV system video signal and EDTV system television signal, which are newly high resolution, are used. Most of them are different in horizontal scanning frequency, video band, frame frequency from each other. Has been done. Therefore,
For example, in order to display different types of video signals on a single monitor TV or a multi-screen monitor TV (multivision device) via a switch, a device that maintains different types of video signals in a synchronous relationship with each other is required.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a means for generating a sync signal of a video signal of a desired system from among video signals of different standards to be input, and the sync signal. An up / down converter that receives the output of the generation means and converts the plurality of video signals into video signals of the same standard, a selector that selects the output of the up / down converter, an output of the synchronization signal generation means and the selector. A monitor that displays a desired image according to a video signal is provided. In the second invention, the output of the up / down converter is directly input to the effector,
Various types of image conversions and effects can be displayed on the monitor screen.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

The video signal conversion / synthesis processing device of the present invention is provided with the above-mentioned structural blocks, so that, for example, the PAL system video signal of the video signal source 1A and the SECAM system video signal of the video signal source 1B, and HDTV system video signals input from other video signal sources 1N
Up / down converters 2A, 2B ... 2
At N, for example, it can be converted into a desired NTSC video signal Vs of the same standard, and can be projected on the monitor device 6 via the selector 3. In this case, the converted video signal Vs of the same standard is made into a signal of the same phase by the reference signal source 4, and the same synchronization information is also supplied from the reference signal source 4 to the monitor device 6. Therefore, the selector 3 Even when an arbitrary video signal source is selected with, it is possible to prevent the screen from being cut or disturbed. When the reference signal generator 4 outputs the video signals of the video signal source 1N in a unified manner, this video output is supplied to the sync separation circuit 8 as indicated by the dotted line to convert the separated sync information into the sync information. Based on each up / down converter 2A,
2B ... 2N can be read. Further, if the input video signal is a composite signal, Dekota 7A as indicated by the dotted line, 7B ‥
It is preferable to provide 7N to convert to a component color signal. In the above-described embodiment, one video signal Vs of the same standard is selected by the selector 3, but as shown in FIG. 2, if the matrix switcher 7 is used instead of the selector 3, M from N input signals are selected. It is also possible to select the M video signals and to separately project the M video signals on each monitor device 6 of the multivision 9.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

FIG. 4 is a block diagram showing an example of an up / down converter. Reference numeral 41 is an A / D converter for sequentially converting an input video signal into digital data.
2 is a write signal processing unit, 43 is a field memory that can write sample data of an input video signal and read it at a predetermined speed, 44 is signal processing of the read field data, for example, frame conversion, scanning signal Is a read signal processing unit for performing interpolation, interpolation, etc. , and 45 is a D / A converter. Reference numeral 46 is a sync separation circuit for detecting a sync signal of the input video signal, 47 is a write clock signal generator for generating a write clock signal of the field memory, and 48 is a reference signal supplied from the outside. A read clock signal generator for generating a clock signal for reading the data in the field memory 43 at a predetermined speed, and a timing controller (CPU) 49 for controlling the overall timing of writing and reading. This up / down converter
A video signal of different standards is read by reading a video signal of different standards written in the field memory 43 of each up / down converter by a reference signal (synchronization information for making the same standard video Vs) supplied from the outside. For example, the video signal is converted into a unified NTSC system video signal, and the synchronization relationship between input video signals of different standards is converted into a unified standard video signal by matching a read timing with a reference signal source. ..

Claims (2)

[Claims] 1. A synchronizing signal generating means for generating a synchronizing signal component of a video signal of a predetermined method from a plurality of input video signals of different methods, and an output of the synchronizing signal generating means, A plurality of up / down converters for converting the video signal of the above into a video signal of the same standard, a selector for selecting the output of each of the up / down converters, an output of the synchronizing signal generating means and an output video signal of the selector. A conversion / synthesis signal processing device between different types of video signals, characterized in that a desired image is displayed. 2. A sync separation means for extracting a sync signal of a predetermined video signal from a plurality of video signals of different input systems, and an output of the sync separation means, wherein the plurality of video signals are the same. A plurality of up / down converters for converting standard video signals, and a video effector to which the output of the up / down converter is supplied, and a single monitor for the video signal processed by the video effector, Alternatively, a conversion / synthesis signal processing device between different types of video signals, characterized in that it can be supplied to a multi-screen monitor.