JPH06230765A - Moving image data display device - Google Patents

Abstract

PURPOSE:To display plural moving images on a display screen simultaneously as moving image windows by segmenting a digital moving image generated by a digital moving image generating part by an image data segmenting part. CONSTITUTION:The digital moving image generating part 10 generates the digital moving image data of a video desired to be displayed on a display device 40. A moving image data segmenting part 20 is to generate plural moving image windows by segmenting at least a part of plural pieces of moving image data transferred from the digital moving image generating part 10, and is provided with a moving image segmentation transfer part equipped with display shape memory. Shape to segment the video transferred from the digital moving image generating part 10 actually is stored in the display shape memory. The data and the shape are written in advance before segmentation processing is performed. A display memory part 30 is memory directly corresponding to the display screen of the display device 40. By employing such constitution, it is possible to display by overlapping plural independent moving images on the display screen simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving image data display device.

[0002]

2. Description of the Related Art With the development of electronic technology, many examples of executing applications such as multimedia in workstations, personal computers, etc. have recently been seen. With these workstations and personal computers, moving images can be displayed on a display screen, for example, a CRT.

[0003]

However, in the prior art, generally, only one moving image can be displayed on one screen.

An object of the present invention is to provide a moving picture data display device capable of simultaneously displaying a plurality of moving pictures on one display screen.

[0005]

SUMMARY OF THE INVENTION The present invention is a moving picture data display device for displaying a plurality of moving picture data at the same time, and a digital moving picture generation section corresponding to each of the plurality of moving picture data. A moving image data cutout unit, at least a part of the digital moving image generated by the digital moving image generation unit is cut out by the moving image data cutout unit, and the plurality of cutout digital moving image cutout units, The moving image data display device is characterized in that the moving image data is transferred to a display memory unit for displaying data.

Further, according to the present invention, the moving image data cutout unit includes a display shape memory for storing a moving image data cutout type, and the digital moving image cutout is performed based on the display shape memory. Thus, a moving image data display device is obtained.

[0007]

According to the moving image data display device of the present invention having the above-described structure, a plurality of moving images can be simultaneously displayed as moving image windows on the display screen.

By changing the data transfer position to the display memory unit, a plurality of moving image windows can be arranged at arbitrary positions on the display screen.

Further, the moving image windows may overlap with each other, and in this case, control is performed so that the image of the overlapping and hidden portion in the moving image data cutout portion is not transferred to the display memory. How to cut out the moving image data depending on the overlapping degree of the moving image windows is performed by writing the cut-out shape in the display shape memory.

[0010]

EXAMPLES Examples of the present invention will be described below.

FIG. 1 shows a circuit configuration of the moving image data display device of the embodiment. This moving image data display device includes a plurality of digital moving image generation units 10, a plurality of moving image data cutout units 20, a display memory (video display memory) unit 30, a display device 40, and the like. The digital moving image generation unit 10, the moving image data cutout unit 20, the display memory unit 30, and the like are controlled by an appropriate moving image display management program executed by a workstation, a personal computer, or the like. In addition, the digital moving image generation unit 10 and the moving image data cutout unit 20 are connected to the display device 40.
The same number as the number of moving images desired to be displayed is provided. That is, the digital moving image generation unit 10 and the moving image data cutout unit 20 have a one-to-one correspondence with each of a plurality of moving image windows to be simultaneously displayed, as described below. Therefore, in order to simultaneously display a plurality of moving image windows, a plurality of sets of these are required.

The digital moving image generator 10 includes a display device 4
The digital moving image data of the image desired to be displayed at 0 is generated. As the moving image data, for example, analog video signals A / D converted into digital data are used. Alternatively, video data or the like stored in a secondary storage device such as a CD-ROM, MT (magnetic tape), or hard disk may be read and a video may be generated based on these data. When data is read from the secondary storage device, if the data is compressed, decompression processing or the like is performed as necessary.

The moving image data cutout unit 20 cuts out at least a part of the plurality of moving image data transferred from the digital moving image generation unit 10 to create a plurality of moving image windows, as shown in FIG. , Display shape memory 2
A moving image cutout transfer unit 21 including 12, 222, ..., 252 is provided. Display shape memory 212, 222,
.., 252 stores the shape that actually cuts out the video transferred from the digital moving image generation unit 10. Such a shape takes into consideration the degree of overlap between the moving image windows, and the display shape memories 212 and 22 before the cutting processing.
2, ..., 252 are written in advance. More specifically, the display shape memories 212, 222, ..., 252 are composed of a large number of bits having a two-dimensional spread. These bits have a one-to-one correspondence with each pixel of the video data from the digital moving image generation unit 10. For example, when this bit is 1, the image data from the digital moving image generation unit 10 is displayed in the display memory 30. To the memory, and the bit is 0
When, the image data is not transferred. Then, by setting the bit corresponding to the image of the hidden portion overlapping with the moving image window to 0, the image of the hidden portion is not transferred to the display memory unit 30.

The display memory unit 30 is a memory that directly corresponds to the display screen of the display device 40. That is, the data written in the display memory unit 30 is directly displayed on the display device 40.
Is displayed in. As the display device 40, for example, CR
T or LCD is used.

Further, the moving image display management program, which is a control program for these, sequentially checks the degree of overlap of the moving image windows, and the display shape corresponding to the degree of overlap is displayed in the display shape memory sections 212, 222.
..., written in 252.

With reference to FIG. 3, the operation in the case of simultaneously displaying a plurality of moving images as illustrated in FIG. 2 on the display screen 41 of the display device 40 by the moving image data display device of the embodiment having the above-mentioned configuration is described. The explanation is as follows. In FIG. 2, a plurality of moving images are simultaneously displayed as a plurality of moving image windows A to E on one display screen. These moving image windows A to E can be displayed at arbitrary positions by controlling the cutout shape and the position on the display memory unit 30. The moving image windows A to E have appropriate shapes according to the display priority and the like when the image data are overlapped, whereby the overlaid images are displayed,
Also, the image overlaid below is hidden. Each video window AE
The shape of is not limited to a rectangle, but an elliptical shape as shown in the figure,
Alternatively, it may be circular or the like.

The image data 11, 12, ..., 15 respectively generated by the plurality of digital moving image generation units 10 are the moving image cutout transfer units 211, 221, ... Of the moving image data cutout units 21, 22 ,. , 251 are cut out according to the cutout information 212a, 222a, ..., 252a of the display shape memories 212, 222 ,. As a result, image data forming the moving image windows A to E is created. Then, the produced image data is transferred to the display memory unit 30 via the common bus 50 or the like, and is synthesized like a jigsaw puzzle so that the respective moving image windows A to E are displayed in an overlapped manner. , Are simultaneously displayed on the display screen 41.

[0018]

As described above, according to the present invention, a plurality of moving images can be simultaneously displayed as a moving image window on the display screen. In this way, since a plurality of independent moving images can be simultaneously displayed on one display screen in an overlapping manner, the present invention can be applied to various wide applications.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram showing an example of a moving image displayed on the screen by the moving image data display device of the embodiment.

FIG. 3 is a block diagram for explaining the operation of the embodiment of FIG.

[Explanation of symbols]

 10 ... Digital moving image generation unit 20, 21, 22, 25 ... Moving image data cutout unit 30 ... Display memory unit 40 ... Display device 41 ... Display screen 212, 222, 225 ... Display shape memory A to E ... Movie window

Claims (2)

[Claims] 1. A moving image data display device for simultaneously displaying a plurality of moving image data, comprising a digital moving image generating section corresponding to each of the plurality of moving image data, and a moving image data cutting section. Comprising, at least a part of the digital moving image generated by the digital moving image generation unit is cut out by the moving image data cutout unit, a plurality of the cutout digital moving image cutout unit,
A moving image data display device characterized by transferring to a display memory unit for data display. 2. The moving image data cutout unit includes a display shape memory that stores a cutout type of moving image data, and the digital moving image is cut out based on the display shape memory. The moving image data display device according to claim 1.