JPH0294974A - Picture display - Google Patents

Abstract

PURPOSE:To attain plural special effect processings independent from one another in a large screen by providing plural picture processing units corresponding to plural monitor receivers and a selecting circuit to allocate an inputted video signal to the picture processing units as it is. CONSTITUTION:The picture display is provided with plural picture processing units 22A-22I to process the video signal corresponding to plural monitor receivers 11A-11I, and a selecting circuit 21 to allocate the video signal. By the command of a central processing unit 15, the plural picture processing units 22A-22I are operated in parallel. Thus, the special effect processings are executed independently for the pictures of the monitor receivers 11A-11I in a large screen 10. By executing the special effect processings so as to supply the same video signal to the plural picture processing units 22A-22I and enlarge the pictures of different parts in the picture processing units 22A-22I, one enlarged picture can be displayed on the large screen.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a system that arranges a plurality of monitor receivers in a predetermined arrangement to form a large screen, and processes a video signal input from a video source. The present invention relates to an image display device that displays images all at once on a large screen by supplying a plurality of video signals to each of the plurality of monitor receivers.

[Summary of the invention]

The present invention arranges a plurality of monitor receivers in a predetermined arrangement to form a large screen, and processes a video signal input from a video source to send a plurality of video signals obtained to each of the plurality of monitor receivers. It is an image display device that displays images all at once on a large screen by supplying a plurality of image processing units that process video signals corresponding to each of the plurality of monitor receivers, and a plurality of image processing units that process video signals input from the video sources. A selection circuit that directly distributes the video signal to the plurality of image processing units, and a central processing unit that controls the plurality of image processing units and the selection circuit are provided, and by operating the plurality of image processing units in parallel, the By displaying a desired image on the screen, a plurality of mutually independent so-called special effect processes can be performed on the large screen with a simple structure.

[Conventional technology]

If images from a video tape recorder (VTR) or the like can be displayed on a large screen, many viewers can view the images from a distance at the same time, thereby increasing advertising effectiveness. However, manufacturing such a monitor receiver having a single cathode ray tube with a large screen is not preferable because the manufacturing cost becomes high and the thickness of the cathode ray tube becomes large. Therefore, conventionally, image display devices have been used in which a plurality of monitor receivers are arranged in a predetermined arrangement to form a large screen, a so-called multi-display.

FIG. 3 shows such a conventional image display device, in which (1) is a main controller such as a personal computer, and (2) is a video tape recorder (VTR) or laser disc playback device (LDP). ), etc. (3) is a switcher (48), an effector for one screen (4B), and a time base collector (TBC) (
4C). Its main controller (
Based on the command from 1), the switcher (4A) selects a desired video signal from the video signal vSO supplied from the video source (2) and supplies it to the effector (4B). performs so-called special effect processing on the video signal, such as enlarging a moving image corresponding to the video signal or creating a mosaic image, and reproduces a converted video signal vS* for one screen. An example of such a single-screen effector (4B) is disclosed in, for example, Japanese Patent Laid-Open No. 62-236276. Further, the time base corrector (4C) synchronizes a plurality of source images supplied from the video source (2) so that even if special effect processing is applied to these images at the same time, the synthesized image will not be distorted.

Further, (5) is a display control device consisting of a control circuit (6), a frame memory for nine screens (7), and an audio signal amplification circuit (8), and the control circuit (6) is connected to the main control device (1). The converted video signal vS*, which is manually input from the video processing device (3) based on the instructions of
itA and distribute it to the target frame memory (7). When displaying an image corresponding to the video signal of one of the video sources (2) by enlarging it to the entire large screen,
The control circuit (6) receives the input converted video signal vS*
is divided into nine screens and each signal is distributed to a corresponding portion of the frame memory (9). The control circuit (6) also has the function of supplying a desired signal from the audio signal AS input from the video source (2) to the audio amplification circuit (8). Then, the frame memory (7) sends the video signals for nine screens one screen at a time to the multi-display (10) as a large screen via nine video signal lines (9), and sends out the video signals for each screen to the multi-display (10) as a large screen. 8) sends the amplified audio signal to the speaker (
13).

The multi-display (10) as a large screen consists of nine monitor receivers 1 (IIA) to (111), and each of these monitor receivers (IIA) to (III) has nine video signal lines (9). are connected to their respective signal lines. Therefore, a predetermined 1 of the frame memory (7) for 9 screens is
An image corresponding to the video signal for the screen is displayed on a predetermined one of the nine monitor receivers 1 (11A) to (111).

[Problem to be solved by the invention]

The video processing device (3) in the example in FIG. 3 generates a converted video signal vS* for one screen, so when a video signal corresponding to the character image "M" is supplied from the video source (2), The character image "M 11" could be enlarged and displayed on the entire multi-display (10) as shown in Fig. 4. However, corresponding to the character image "M", as shown in Fig. 4B The monitor image a (IIA) in the multi-display (10) displays the original image, the monitor image receiver (IIB) displays an enlarged image, and the monitor image a (IIC) displays a so-called scroll image. The problem is that it is not possible to perform multiple independent special effects processing on the multi-display (10), such as displaying images.This is because parallel processing is difficult for the image display device shown in the example in Figure 3 This is due to the fact that the degree of freedom in the special effects processing function is low.

In addition, the effector (4B) is also used in the image display device shown in FIG.
Although it is possible to perform parallel processing by improving the system, it is necessary to operate complex electronic circuits at high speed in a time-sharing manner, which increases manufacturing costs and requires extremely complex software to operate the device. Become.

In view of these points, the present invention provides an image display device in which a plurality of monitor receivers are arranged in a predetermined arrangement to form a large screen.
The purpose is to enable a plurality of mutually independent special effect processes to be performed on a large screen with a simple structure.

[Means to solve the problem]

The image display device according to the present invention, for example, as shown in the first part,
A plurality of monitor receivers (IIA) to (III) are arranged in a predetermined arrangement to form a large screen (1o), and a video source (2o) is formed.
), the large screen (1
0), a plurality of image processing units (22A) to (221) each processing a video signal corresponding to each of the plurality of monitors 1 (IIA) to (III); , a selection circuit (21) that directly distributes the video signal input from the video source (2) to the plurality of image processing units (22A) to (221);
) to (22I) and a central processing unit (15) that controls the selection circuit (21), and by operating these plural image processing units) (22A) to (221) in parallel, the large screen (10) The desired image is displayed on the screen.

[Effect]

According to the present invention, the plurality of image processing units ) (22A) to (22
By operating 1) in parallel, the large screen (10)
Special effect processing can be applied independently to the images of each of the monitor receivers (IIA) to (III). Also, for example, the plurality of image processing units) (22A) to (221
) by supplying the same video signal to each image processing unit)
(22A) to (221), the images of different parts can be enlarged (by applying special effects processing, one enlarged image can be displayed on the large screen (10), etc.) It is also possible to easily apply special effect processing to the screen (1o) for one screen.

〔Example〕

Hereinafter, one embodiment of the image display device of the present invention will be described with reference to FIGS. 1 and 2. In FIGS. 1 and 2, parts corresponding to those in FIGS. 3 and 4 are given the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 1 shows the image display device of this example, and in this FIG. 1, a video source (2) is a video tape recorder (VT
R) 1 source 5ISVTR2 source S2, ..., laser disc playback device (LDP
) has m sources Sm. These sources 31-Sm each have a synchronization signal input terminal 5YNC, and have video signals v1-Vm and audio signals A1-A.
It is designed so that each of m can be output independently. Further, the operations of these sources S1 to Sm can be controlled by a main controller (1).

In this example, the main controller (1) is connected between the video source (2), the multi-display (10), and the speakers (13).
), a multi-video effector (14) is provided. In this multi-video effector (14),
(15) is a mask processor that centrally controls the operation of this multi-video effector (14), (16) is an input/output circuit that connects this mask processor (15) and main controller (1), and (17) is a synchronization signal It is a generator. This synchronization signal generator (17) generates a horizontal synchronization signal and a vertical synchronization signal for each synchronization (K) of each source 31 to Sm of the video source (2).
signal input terminal 5YNC. In this example, each source s1 to Sm is synchronized by the synchronization signal generator (17), so there is no need to provide a time base collector (TBC) as in the conventional example, simplifying the circuit and reducing the cost. There are benefits that can be made.

Also, (18) is a parallel bus, and this parallel bus (18)
) is a system bus (19) that transmits digital signals consisting of control signals, address signals, and data signals, and a nine-tree path line (20A) that transmits analog signals.
It is composed of ~(20I). (21) is a selection circuit, and m input terminals of this selection circuit (21) each have a video signal v1 supplied from the video source (2).
~Vm is supplied, and the nine output terminals of this selection circuit (21) are connected to the path lines (2OA) to (20I), respectively. This selection circuit (21) is a mask processor (1).
5), those nine pass lines (2OA
) to (20I), one of the video signals v1 to Vm is supplied as is to each of the video signals v1 to Vm. In Figure 1, the path lines (2OA), (20B), (20C)
.

(201) have video signals Vi, Vj, Vk, respectively.
, Vl is output.

In this example, the multi-video effector (14) includes:
Each monitor receiver (IIA) of the multi-display (10)
) to (III), nine image processing units (22A) to (221) having the same configuration are provided. Among them, the image processing unit (22A) is the slave processor (22A).
3A), an effect processor (24A) and a frame memory (25A) for one screen, and its slave processor (23A) performs its operations according to instructions given from the mask processor (15) via the system bus (19). Effect processor (24A) 1i1J
I wholesale. The pass line (20A) and one of the video signal lines (9) leading to the monitor receiver (IIA) are connected to the input terminal and output terminal of the effect processor (24A), respectively, and the FF-processor (24A)
converts the video signal Vi transmitted through the pass line (2OA) from analog to digital (A/D) and writes it into the frame memory (25A). After that, the effects processor (24A) is connected to the slave processor (238).
In response to a command from the user, special effect processing is applied to the image data in the frame memory (25A), and the image corresponding to the image data is enlarged, reduced, wiped (erases a specific part), inserted text, etc. administer.

Further, the effect processor (24A) extracts a horizontal synchronization signal and a vertical synchronization signal from the input video signal Vi, and performs the above-mentioned operations in synchronization with the extracted synchronization signal. After reading the processed image data from the frame memory (25A), it performs digital-to-analog (D/A) conversion to generate a converted video signal vi*.

The effects processor (24A) then supplies the converted video signal vi* to the monitor receiver (IIA). In this example, each video signal V i ''-V I on the pass lines (20Δ) to (20I) is synchronized by the action of the synchronization signal generator (17) described above, so each image processing unit) ( All operations of 22A) to 22I are also synchronized, thus eliminating the need for a conventional time base collector (TBC).

In addition, the remaining image processing units (22B) to (221)
independently perform special effect processing on the video signals Vj-Vl transmitted through the pass lines (20B) to (201) to generate converted video signals vj*-vl*, and convert the converted video signals vj*-vl *Respectively monitor receiver (11B)
~(111). Further, in this example, a cathode ray tube is used as the monitor receiver (IIA) = (LH), but a liquid crystal display device or the like may be used instead of the cathode ray tube.

Furthermore, in the multi-video effector (14), (2
6) is an audio circuit, and this audio circuit (2)
6) is 1-^m to the audio signal input from the video source (2) in accordance with the command of the mask processor (15).
A desired signal is selected and amplified from among them, and this amplified audio signal is supplied to a speaker (13).

To explain the operation of the image display device of this example, first, FIG.
Assume that different special effect processing is applied to each monitor receiver (IIA), (IIB), and (IIC) of a multi-display (10) as shown in FIG.

In this case, the main control device such as a personal computer (
1) Sends an instruction code corresponding to the special effect processing of the example B in FIG. 4 to the mask processor (15).

Then, the mask processor (15) decodes the instruction code and operates the selection circuit (2nd circuit) to operate the parallel bus (18
) pass line (2OA), (20B),
A desired video signal among the video signals supplied from the video source (2) is supplied to each of the video sources (20C). after that,
The mask processor (15) is an image processing unit (22A).
) to the slave processor (23A), an instruction code for "enlarged output" to the slave processor of the image processing unit (22B), and a "scroll" instruction code to the slave processor of the image processing unit (22C). Output” instruction codes are sent in parallel. Thereby each monitor receiver (IIA), (IIB), (I
IG) displays an image as shown in FIG. 4B.

In this way, according to this example, the image processing units (22Δ) to (221) are provided corresponding to the respective monitor receivers (IIA) to (111) of the multi-display (10), so that the multi-display There is an advantage in that multiple independent special effect treatments can be easily applied within the display (10). Furthermore, those image processing units (22A)
~ (22I) are each equipped with a slave processor (24A) etc. for interpreting instructions, so it is easy to create software in the main controller (]).

Next, we will explain the operation when the image display device of this example displays an enlarged screen on the multi-display (10) as one screen as shown in FIG. 4A. The circuit (21) is controlled to supply a common desired video signal to the pass lines (204) to (20I). In this case, for example, frame memo IJ (2
5A) etc., the image shown in Figure 2A (2A image data) is stored, so this image (27) is divided into nine parts (27A).
Divide equally into ~(27I). And the mask processor (
15) sends a command to the image processing unit (22A) to enlarge the part (27A) in FIG. 2A, sends a command to the image processing unit (22■) to enlarge the part (271), and A command to enlarge the intermediate portions (27B) to (278) is sent to the image processing units (22B) to (228). At this time, for example, the image processing unit) (
22A) outputs a converted video signal of an enlarged image of a portion (27A) as shown in FIG. 2B, and the image processing unit (22■) outputs a converted video signal of an enlarged image of a portion (27I) as shown in FIG. A converted video signal is output, resulting in a fourth
An enlarged image as shown in Figure A is displayed.

In this way, according to this example, it is possible to easily display an image that has been subjected to special effect processing for one screen on the multi-display (10), and it is possible to perform special effect processing with an extremely high degree of freedom. Can be done. In addition, this example does not require a time base collector, and the image processing unit l-(22A)
Since it is only necessary to provide ~(22I) in parallel, the structure is simple and manufacturing costs can be reduced.

In addition, in this example, the number of output terminals of the selection circuit (21) is set to be large in advance, and the pass line (
The number of image processing units (22A) to (22I) is set to a correspondingly large number, and the number of image processing units (22A) to (22I) are set to a correspondingly large number.
By providing the same number of monitors as IIA) to (III), it is possible to easily cope with changes in the number of monitor receivers constituting the multi-display (10). That is, the image display device of this example has the advantage of being extremely expandable.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various configurations can be taken without departing from the gist of the present invention.

〔Effect of the invention〕

As described above, the image display device of the present invention includes a plurality of image processing units that process video signals corresponding to the plurality of monitor receivers that constitute a large screen, and a video signal that is input from a video source as it is. Since a selection circuit for allocating to the plurality of image processing units is provided, there is an advantage that a plurality of mutually independent special effect processes can be performed on the large screen with a simple structure.

Furthermore, in the present invention, by setting a large number of output terminals of the selection circuit in advance and providing the necessary number of image processing units, the present invention can easily operate even if the number of monitor receivers that make up the large screen changes. It has the advantage of being highly scalable.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram including a partial perspective view showing an embodiment of the image display device of the present invention, FIG. 2 is a line diagram for explaining the operation of the example shown in FIG. 1, and FIG. 3 is a conventional image display device. FIG. 4 is a line diagram showing the mode of special effects, FIG. 4 A is a line diagram showing special effects that were possible in the past, and FIG. 4 B is a diagram showing special effects that have been difficult to achieve in the past. (2) is a video source, (10) is a multi-display, (118) to (III) are monitor receivers, (15)
) is a mask processor, (18) is a parallel bus, (21)
(22A) to (221) are image processing units, (23A) is a slave processor, (22A) is a selection circuit, (22A) is an image processing unit, (23A) is a slave processor,
4A) is an effect processor. Page 4 of page 4 of the appearance of Hidemori Matsukuma, the representative of the agent

Claims (1)

[Claims] A plurality of monitor receivers are arranged in a predetermined arrangement to form a large screen, and a plurality of video signals obtained by processing video signals input from a video source are transmitted to the plurality of monitor receivers. The image display device displays images all at once on the large screen by supplying signals to each of the plurality of monitor receivers, and a plurality of image processing units that process video signals corresponding to each of the plurality of monitor receivers; A selection circuit that directly distributes the video signal to the plurality of image processing units, and a central processing unit that controls the plurality of image processing units and the selection circuit are provided, and the plurality of image processing units are operated in parallel. An image display device characterized by displaying a desired image on a screen.