JPH0869271A - Image display device - Google Patents

Abstract

PURPOSE: To provide an image display device taking in a function effective for a presentation and a conference, etc., to simplify a presentation system and to increase an added value of the image display device. CONSTITUTION: After signals inputted from video supply equipments 1, 2, 3 are converted into the signals of the same signal form by signal conversion circuit 7, 8, 9, the signals are inputted to a screen division/layering circuit 10, and screen layering is performed. An instruction inputted from an external equipment operation input 16 is inputted to an external equipment control circuit 17, and the external equipment control circuit 17 controls the video supply equipments 1, 2, 3 by an external equipment control means 20, and controls an operation screen display circuit 18 also, and a picture layering circuit 19 layers the outputs of the picture division/layering circuit 10 and the operation screen display circuit 18 to display it on a display part 11. Thus, the presentation system also incorporating the connection of external equipment is simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for conferences, presentations, etc., for example, video signals and RG of personal computers.
An image display device capable of displaying a video signal such as a B signal,
In particular, the present invention relates to a multi-screen split display function for a plurality of video signal inputs having different signal forms, a drawing function on the screen, and a control function of an external device.

[0002]

2. Description of the Related Art In the field of television receivers,
It is common practice to simultaneously display the second video signal as a sub-screen on the first video signal displayed on the entire screen with a screen size of 1/16 or 1/9 of the entire display area. Has been.

As a function of drawing on an image, an editing device for synthesizing characters and figures such as a title on an image taken by a video camera has already been put on the market, and these are compatible with general television and video signals. ing.

In controlling the video equipment, a control device such as a remote controller for controlling the equipment has a one-to-one correspondence with the equipment.
It is common now to support.

[0005]

However, there are the following problems when the above-mentioned conventional technique is applied to an image display device capable of displaying a video signal or an RGB signal of a personal computer, for example, a display monitor.

First, for example, when an NTSC video signal and an RGB signal of a personal computer are to be divided and combined and displayed on the screen, the horizontal and vertical scanning frequencies and scanning system of the video signal are different, so that conventional image display is performed. The device could not display.

Secondly, when an image display device, for example, a display monitor is used for a conference or a presentation, when a character or a graphic is drawn on the image displayed on the displayed screen, the conventional method is used. Since an editing device having a drawing function supports only one type of video signal such as an NTSC video signal, an editing device for the type of video signal corresponding to the display monitor is required. In particular, editing equipment for RGB output of personal computers is not common. Further, in this case, the drawing operation on the screen is often difficult due to the drawing method of the editing device or the connection method of the devices.

Thirdly, when a plurality of external video supply devices are connected and used by switching them, in addition to a control device for performing an input switching operation on the image display device side, a control device such as a remote controller. However, the number of external video supply devices is required, which makes the operation complicated.

An object of the present invention is to solve the above problems and provide an image display apparatus incorporating these functions, which is optimal for presentations and the like.

[0010]

The present invention solves the above-mentioned problems by using the following means.

First, for the first problem, the signal form of the input video signal is set horizontally regardless of the type of the input signal.
The problem can be solved by providing a conversion means for converting the vertical scanning frequency into one specific signal form at each input stage, thereby converting to the same signal form and then dividing and combining the screens.

For the second problem, the image display device is
This can be solved by providing a drawing function with a drawing device, for example, a pointing device such as a mouse, and a function of combining a drawn image and a video signal.

The third problem can be solved by a function of controlling the connected external image supply device from the display monitor side and by making it possible to operate these control operations by screen display.

[0014]

According to the present invention, the functions effective for presentation and the like can be integrated in the image display device, so that connection with peripheral devices and their operations can be simplified and the added value of the image display device can be increased. .

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an image display device according to the present invention, for example, a display monitor. Reference numerals 1, 2, and 3 denote external video supply devices 4, 5, and 6.
Is an external video input terminal, 7, 8 and 9 are signal conversion circuits,
Reference numeral 10 is a screen division / synthesis circuit, and 11 is a display unit of a display monitor.

In FIG. 1, external image supply devices 1, 2,
The video signals output from 3 are input to the signal conversion circuits 7, 8 and 9 via the video signal input terminals 4, 5 and 6, respectively. In the signal conversion circuits 7, 8 and 9, signals having the same horizontal and vertical scanning frequencies and the same scanning method, that is,
The signals converted into the same signal form are respectively output to the screen division / combination circuit 10, and the video signals combined here are displayed on the display unit 11, that is, the CRT or the projection screen. The portion surrounded by a broken line is a characteristic portion of the present invention.

Here, it is assumed that the video signal input terminals 4, 5, and 6 have terminal shapes corresponding to the outputs of the external video supply devices 1, 2, and 3, and at least one input signal is an RGB signal of a personal computer or the like. It is assumed that the input is supported, and at least one of the other inputs is a general video signal such as an NTSC signal.

In the present invention, by providing a signal conversion circuit for each input signal, the output of the signal conversion circuit,
That is, by making the signal form the same at the input stage of the screen division / composition circuit 10, it is possible to combine the screens of different types of video signals. In FIG. 1, the video signal input has three systems, but in the case of two or more systems, the same configuration enables the screen synthesis of different types of video signals. Further, the selection of the video input to be combined may be performed by the screen division / composition circuit 10, or a signal switching circuit may be separately provided depending on the case.

FIG. 2 is a block diagram showing another embodiment of an image display device according to the present invention, for example, a display monitor, in which 12 is a video signal input and 13 is a character or figure drawing on the screen. For drawing, for example, a pointing device such as a mouse, 14 is a drawing processing circuit, 15 is a screen synthesizing circuit, 11 is a display unit of the display monitor, and like FIG. This is a feature of the present invention.

In FIG. 2, pointing device 1
The drawing operation information input by 3 is the drawing processing circuit 14
It is converted into image information by and is input to the screen synthesis circuit 15 together with the video signal from the video signal input 12. The screen synthesizing circuit 15 synthesizes the drawn image signal on the video signal from the video signal input 12 and displays it on the display unit 11, for example, a CRT or a projection screen. Therefore, with such a configuration, it is possible to draw on the screen by the display monitor alone. Further, by making the pointing device 13 wireless, it is possible to further improve operability.

FIG. 3 is a block diagram showing another embodiment of the image display device according to the present invention, for example, a display monitor, in which the drawing function shown in FIG. 2 is added to the screen dividing / combining function shown in FIG. Therefore, the circuits having the same reference numerals as those in FIGS. 1 and 2 have the same functions.

FIG. 3 shows a configuration in which the screen compositing / combining circuit 10 of FIG. 1 and the screen compositing unit 15 of FIG. The signal is input to the circuit 15, is input by the pointing device 13, and is combined with the signal converted into image information by the drawing processing circuit 14. Then, it is displayed on the display unit 11, for example, a CRT or a projection screen. In the embodiment of FIG. 2, the screen division / synthesis circuit 10 and the drawing synthesis circuit 15 are arranged in series, but these two are integrated into one and screen division / synthesis and drawing synthesis are performed at one time. Is also possible.

By thus combining FIG. 1 and FIG. 2, the function of the display monitor can be further improved.

FIG. 4 is a block diagram showing another embodiment of the image display device according to the present invention, for example, a display monitor. 16 is an external device operation input section, 17 is an external device control circuit, and 18 is an external device operation. A screen display circuit, 19 is a screen compositing circuit, and 20 is an external device control means. The circuits designated by the same reference numerals as those in FIGS. 1, 2 and 3 have the same functions.
As in FIGS. 1 and 2, the part surrounded by the broken line is the part that characterizes the present invention.

In FIG. 4, reference numeral 16 is the same as that in FIG. 1 from the external image supply devices 1, 2, and 3 to the screen division / synthesis circuit 10, and a plurality of image signals from the plurality of external image supply devices. The screen composition is performed. On the other hand, the external device control command input from the external device operation input unit 16 such as the remote controller, key input or mouse of the display monitor is input to the external device control circuit 17, and the external device control circuit 17 receives the command. According to the external device control means 2
0, for example, a wired control means using an RS232C interface or the like, or a wireless control means using an infrared ray or the like to control the external video supply devices 1, 2, and 3, and an external device operation screen display circuit according to the operation. The contents of 18 are controlled, and the output of the external device operation screen display circuit 18 is combined with the signal of the screen division / composition circuit 10 by the screen combination circuit 19 and displayed on the display unit 11. Therefore, with such a configuration, by operating the screen display content of the display monitor, it becomes possible to operate the external video supply devices 1, 2, and 3 from the display monitor, and control of the external device and control of the function of the display monitor. Since it can be realized on the same screen, operability can be dramatically improved.

In the embodiment shown in FIG. 4, the screen division / composition circuit 1
0 and the screen composition circuit 19 are arranged in series,
It is also possible to combine these two into one and perform screen division / composition and display composition at one time. In addition, a drawing function can be added to this structure with the same structure as in FIG.
It is also possible to delete the screen division / composition function from the above and only operate the external device.

FIG. 5 is a diagram showing an example of the display contents of the display monitor according to the present invention. Reference numeral 21 is a display screen, 22 is an external device operation screen display section, and 23 is a division / combination screen display section. , 24 are drawing contents by the drawing means.

This display content is an example of a display screen when the configuration of the drawing function of FIG. 2 is added to the configuration of FIG. 4, and the split / composite screen display unit 23 on the left side of the display screen displays a plurality of external images. A split / combine screen from the supply device is displayed, and the drawing content 24 by a drawing device such as a pointing device is overwritten on the screen. Further, an external device operation screen display section 22 is displayed on the right side of the display screen, and the operation of this screen display enables the operation of the external video supply device connected to the display monitor.

[0030]

As described above, according to the present invention,
For example, since signals having different signal forms such as video signals and RGB signals from a personal computer are converted into one specific signal form for processing, a plurality of signals having different signal forms can be divided and combined and displayed on the same screen. As a result, it becomes possible to handle various signals at the same time, which were not possible with conventional image display devices.

Further, according to the present invention, since a drawing function for characters and figures can be incorporated into the image display device,
It is not necessary to have an editing device for each signal form, and drawing operations can be unified and simplified.

Further, according to the present invention, in addition to the functional operation of the image display device, the operation of the external video supply equipment connected to the image display device can be integrated in the image display device, and the operation can be performed using the screen display. Since it becomes possible, the control of each device becomes extremely simple, which can contribute to improving the efficiency of presentations and conferences.

By adopting the structure of the present invention, the added value of the image display device can be increased,
It is possible to simplify the entire presentation system including the connection of external devices and reduce the cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an image display device according to the present invention.

FIG. 2 is a block diagram showing the configuration of another embodiment of the image display device according to the present invention.

FIG. 3 is a block diagram showing the configuration of still another embodiment of the image display device according to the present invention.

FIG. 4 is a block diagram showing a configuration of still another embodiment of the image display device according to the present invention.

FIG. 5 is a diagram showing an example of display contents of the image display device according to the present invention.

[Explanation of symbols]

 1, 2, 3 ... External video supply equipment 4, 5, 6 ... External video signal input terminals 7, 8, 9 ... Signal conversion circuit 10 ... Screen division / synthesis circuit 11 ... Display section 12 ... Video signal input 13 ... Pointing device 14 ... Drawing processing circuit 15 ... Screen synthesis circuit 16 ... Operation input section 17 ... External device control circuit 18 ... Operation screen display circuit 19 ... Screen synthesis circuit 20 ... External device control means 21 ... Display screen 22 ... External device operation screen display Part 23 ... Division / composition screen display part 24 ... Drawing contents

Front page continuation (72) Inventor Yasuhiro Tomita 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock Company, Information & Video Division, Hitachi, Ltd. (72) Seiichi Sekiguchi 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Hitachi, Ltd. Information & Video Division (72) Inventor Hiroshi Yoshikawa 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, Ltd.Hitachi Ltd. Information & Video Division (72) Inventor Masanori Ayukawa 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Hitachi, Ltd. Information & Video Division (72) Inventor Keiji Kawada 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Stock Company Hitachi Image Information Systems (72) Inventor Tomofumi Moriya 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Hitachi Image In the information system (72) Inventor Takeshi Hoshino 1-280 Higashi Koigakubo, Kokubunji City, Tokyo Inside the Hitachi Design Co., Ltd.

Claims (3)

[Claims] 1. At least two types of video signals having different horizontal scanning frequencies, vertical scanning frequencies, and scanning methods are input from different input terminals, and the at least two types of video signals have the same horizontal scanning frequency and vertical scanning. A signal converting means for converting into a frequency and scanning type video signal; a screen combining / dividing means for combining or dividing a plurality of video signals converted into the same frequency signal by the signal converting means; and the combining / dividing means. An image display device comprising: a display unit that displays the output of the above as an image. 2. An image display device for inputting a video signal, converting the video signal into an image and displaying the image on a display unit, means for drawing an arbitrary image, and the arbitrary drawing as an image signal. An image display device comprising: a drawing processing unit for converting, a synthesizing unit for synthesizing the video signal and the image signal, and a display unit for displaying an output of the synthesizing / dividing unit as an image. 3. A means for connecting a plurality of external video supply devices, a means for controlling these devices, a device for displaying a device operation screen corresponding to the control on the screen, and a device operation screen display. An image display device, characterized by comprising means for selecting and operating the external video supply device by the screen display operation.