JP3744124B2 - Screen control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a screen control device capable of simultaneously displaying two screens on a monitor screen and switching the aspect ratio of the screen.
[0002]
[Prior art]
FIG. 2 is a block diagram of a conventional screen control apparatus having a two-screen simultaneous display function and an aspect ratio switching function. The screen control device includes a video output device 1 that inputs two video signals S1 and S2 and outputs a video signal S3, a video output device 2 that inputs two video signals S3 and S4 and outputs a video signal S5, and And a monitor device 3 for displaying an image based on the video signal S5.
[0003]
As described above, the screen control apparatus includes the video output device 1 on the system sub-side (or client side) and the video output device 2 on the system main side (or server side). Each independently has a two-screen simultaneous display function and an aspect ratio switching function.
[0004]
[Problems to be solved by the invention]
However, in the conventional screen control device, the video output devices 1 and 2 have screen control functions such as a two-screen simultaneous display function and an aspect ratio switching function, respectively. As shown in FIG. 3A, when the two-screen simultaneous display of the image 3a based on the video signal S4 and the image 3b based on the video signal S3 (video signal S1 or S2) is performed, the video output device 1 When a video signal S3 for simultaneous display of two screens using the video signals S1 and S2 is output, the video output device 2 outputs a video signal S5 for simultaneous display of three screens using the video signals S1, S2, and S4.
[0005]
For this reason, as shown in FIG. 3B, the screen of the monitor device 3 simultaneously displays three screens including an image 3a based on the video signal S4, an image 3c based on the video signal S1, and an image 3d based on the video signal S2. This causes the inconvenience of being made.
[0006]
When the video output device 2 outputs an image signal S3 with an aspect ratio of “16: 9” while the video output device 2 displays an image on the monitor device 3 with an aspect ratio of “4: 3”, the monitor device 3 is disadvantageous in that the image displayed on the screen 3 is compressed in the horizontal direction, resulting in an image that is remarkably impaired in aesthetic appearance.
[0007]
The present invention has been made to solve such a conventional problem, and the screen control of the video output apparatus on the system main side (server side) is the video output apparatus on the system sub-side (client side). An object of the present invention is to provide a screen control device capable of outputting a video signal in consideration of the state.
[0008]
[Means for Solving the Problems]
The screen control device of the present invention includes a first video output device on the sub-system side, a second video output device connected to the output side of the first video output device and on the system main side, A display device connected to the output side of the video output device for displaying the final video of the system, and a screen control state of the second video output device is detected, and the first video output device of the first video output device is matched with this screen control state. And an output control device that regulates the screen control state.
[0009]
According to the present invention, the video output device on the system sub-side (client side) can output a video signal in consideration of the screen control state of the video output device on the system main side (server side). A control device is obtained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a first video output device on the system sub-side, and a second video output device connected to the output side of the first video output device and on the system main side. A monitor device connected to the output side of the second video output device and displaying the final video of the system; and a screen control state of the second video output device is detected, and the first control is performed in accordance with the screen control state. An output control device that regulates a screen control state of the video output device, and the first and second video output devices have a two-screen simultaneous display function of combining a plurality of input video signals and displaying two screens simultaneously; When the output control device detects that the second video output device is synthesizing the video signal from the first video output device with another video signal and performing two-screen simultaneous display, the first video output device Restricts the screen control status of the device to a single screen output The screen control device is characterized by the fact that the screen control state of the video output device on the system sub-side is regulated according to the screen control state of the video output device on the main side of the system, so that the screen is always optimal. When the video output device on the main side in the system is in the two-screen simultaneous display state, the video output device on the sub-side in the system is restricted to the single screen output state. Simultaneous screen output can be obtained.
[0011]
According to a second aspect of the present invention, there is provided a first video output device that is a sub-side on the system, a second video output device that is connected to the output side of the first video output device and is a main side on the system, A monitor device connected to the output side of the second video output device and displaying the final video of the system; and a screen control state of the second video output device is detected, and the first video output device is matched to this screen control state The output control device for restricting the screen control state of the display device, the first and second video output devices have an aspect ratio switching function for switching the aspect ratio of the screen displayed on the monitor device, and the output control device has the second video The screen control device is characterized in that the aspect ratio of the video signal output from the first video output device is regulated to the same ratio in accordance with the aspect ratio of the video signal output from the output device. By regulating the screen control status of the video output device on the system sub-side according to the screen control status of the video output device on the in-side, it is possible to always obtain the optimum screen output. By regulating the aspect ratio of the first video output device in accordance with the aspect ratio of the video output device, it is possible to obtain a screen output with an optimal aspect ratio.
[0013]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of a screen control apparatus according to the present invention. The same components as those shown in FIG. The screen control apparatus according to the present invention includes a video output device 1 on the system sub-side (or client side) and a video output device 2 on the system main side (or server side). On the output side, a monitor device 3 for outputting the final video in this system is connected.
[0014]
The video output device 1 processes the input video signals S1 and S2, performs two-screen simultaneous display, aspect ratio switching, and the like, and outputs it as a video signal S3. Similarly, the video output device 2 processes the input video signals S3 and S4, performs processing such as two-screen simultaneous display and aspect ratio switching, and outputs it as the video signal S5.
[0015]
The output control device 4 monitors the screen control state of the video output device 2 and regulates the screen control of the video output device 1. For example, the video output device 2 uses the video signal S4 to generate an image 3a and a video signal S3 (video signal). When the two-screen display with the image 3b by S1 or S2) is performed, the video output device 1 is restricted to output only one of the video signal S1 and the video signal S2 as the video signal S3.
[0016]
Further, the video image is so formed that the aspect ratio of the image formed by the video signal S5 output from the video output device 2 is the same as the aspect ratio of the image formed by the video signal S3 output from the video output device 1. The output device 1 is regulated.
[0017]
In the above-described embodiment, the case where the video output devices 1 and 2 have processing functions such as two-screen simultaneous display and aspect ratio switching control has been described, but the processing function is not limited to this.
[0018]
【The invention's effect】
According to the present invention, the screen control state of the video output device on the system main side is detected, and the screen control state of the video output device on the system sub-side is regulated according to this screen control state. , You can always get the best screen output.
[Brief description of the drawings]
FIG. 1 is a block diagram of a screen control apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of a conventional screen control apparatus. FIG. 3 is an operation explanatory diagram of a conventional screen control apparatus.
1 First video output device (sub-side or client-side)
2 Second video output device (main side or server side)
3 Monitor device 4 Output control device

Claims (2)

A first video output device on the sub-side of the system;
A second video output device connected to the output side of the first video output device and serving as a main side on the system;
A monitor device connected to the output side of the second video output device for displaying the final video of the system;
An output control device that detects a screen control state of the second video output device and regulates the screen control state of the first video output device in accordance with the screen control state ;
The first and second video output devices have a two-screen simultaneous display function of combining a plurality of input video signals and displaying two screens simultaneously,
When the output control device detects that the second video output device is synthesizing the video signal from the first video output device with another video signal and performing two-screen simultaneous display, the first video output device A screen control device that restricts the screen control state of the device to a single screen output state. A first video output device on the sub-side of the system;
A second video output device connected to the output side of the first video output device and serving as a main side on the system;
A monitor device connected to the output side of the second video output device for displaying the final video of the system;
An output control device that detects a screen control state of the second video output device and regulates the screen control state of the first video output device in accordance with the screen control state ;
The first and second video output devices have an aspect ratio switching function for switching an aspect ratio of a screen displayed on a monitor device;
The output control device restricts the aspect ratio of the video signal output from the first video output device to the same ratio in accordance with the aspect ratio of the video signal output from the second video output device. apparatus.

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