JPH07295526A - Image processor - Google Patents

Abstract

PURPOSE:To display a visual image only in a desired part as an optional visual image display area by setting the desired optional area where the visual image is displayed on a storage device, where a display place is set, with specific data. CONSTITUTION:The memory 13 having bits corresponding to all the dots of a display device 12 is stored with data '1' or '0' indicating whether visual image data are displayed or not in bit units. The data in the memory 13 are read out in synchronism with the display operation of the display device 12 and bit information corresponding to display positions are supplied to a selector 1 in order. The selector 11 selects the visual image data or display data of an information processing equipment according to the output bit contents of the memory 13 and outputs the data to the display device 12. Consequently, the visual image is displayed on the display screen of the display device 12 only at the part set as the visual image display area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for synthesizing and displaying a visual image such as a TV (television) or a VTR (video tape recorder) on a display screen of an information processing device.

[0002]

2. Description of the Related Art On a display screen of an information processing device, TV, V
A conventional image mask function in an image processing apparatus for compositely displaying a visual image such as TR has been controlled based on specific digital color information.

That is, a specific color is designated, and the area of that color is used as a visual image display area. The specific color is compared with the color of the display data output from the display controller, and they match. In that case, that portion was used as the visual image display area.

FIG. 2 is a block diagram illustrating a conventional technique in this case. In the figure, reference numeral 21 is a selector for selecting display data, which selects visual image data or display data of the information processing device according to the output data of the comparator 23.

A display device 22 displays the data output from the selector 21. Reference numeral 23 is a comparator that outputs a selection control signal of the selector 21, and compares the color set by the color setting unit 24 with the display data of the information processing device,
When the colors match, the display data of the information processing device is selected and output to the display device 21.

A color setting unit 4 sets a color for displaying the visual image data. In the conventional image processing device that controls the visual image based on the above-mentioned conventional color information, since the visual image display area is selected by color, the color specified as the visual image display area is a moving image on the display screen. If it exists in a portion other than the portion desired to be the display area, there is a problem that the visual image is displayed up to that portion (all of the same color portion).

[0007]

As described above, in the conventional image processing apparatus which controls the visual image based on the conventional color information, since the visual image display area is selected according to the color, the visual image is not displayed. If the color specified as the display area exists in a portion other than the portion desired to be the moving image display area on the display screen, there is a problem that the visual image is displayed up to that portion.

The present invention has been made in view of the above circumstances,
Without setting a region of the visual image with a specific color,
It is an object of the present invention to provide an image processing device capable of displaying a visual image only on a portion desired to be an arbitrary visual image display area on a display screen of an information processing device.

[0009]

According to the present invention, a storage device for setting a portion for displaying a visual image on a display screen is provided, and an arbitrary region on the display screen where a visual image is to be displayed is stored in the storage device. It is characterized in that the visual image is displayed only on the portion set as the visual image display area on the display screen by the image selection control using the read data.

As a concrete example, as shown in FIG. 1, a memory 13 having bits corresponding to all dots of the display device 12 is provided, and this memory 13 is read out and controlled in synchronization with the display operation of the display device 12. The selector 11 is controlled by the read data to select visual image data or data of the information processing device as the display data of the display device 12.

[0011]

The storage device for setting the portion for displaying the visual image on the display screen stores, as data, an arbitrary area on the display screen where the visual image is to be displayed.
The storage device is read-controlled in accordance with the display operation on the display screen, and the read data is used to select and display the visual image data or the data of the information processing device. As a result, the visual image can be displayed only on the portion set as the visual image display area on the display screen.

A concrete example of this will be described with reference to FIG.
Data (bit pattern data) indicating whether or not to display visual image data in dot units is stored in the memory 13 having bits corresponding to all dots of the display device 12. The memory 13 is read-accessed in synchronization with the display operation of the display device 12, and the selector 11 is controlled by the read data. The selector 11 selects visual image data or display data of the information processing device according to the bit content read from the memory 13 and outputs it to the display device 12. As a result, the visual image can be displayed only on the portion set as the visual image display area on the display screen.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 11 is a selector for selecting display data of the display device 12, and selects visual image data or display data of the information processing device based on the output data of the memory 13.

Reference numeral 12 denotes a display device for displaying and outputting display data of the information processing equipment. Here, the display output data outputted from the selector 11 is received, and an arbitrary designated area is displayed on the data display screen of the information processing equipment. Display a visual image on.

Reference numeral 13 denotes a memory which is read-access-controlled in synchronization with the display operation of the display device 12, which sets a portion for displaying a visual image on the display screen and controls the selector 11 so as to select the portion. To do. This memory 13 is composed of a semiconductor memory element. In this embodiment, it has bits corresponding to all the dots of the display device 12, and the bit information for selecting the visual image is written in the area portion where the visual image is to be displayed. This memory 13
Data is read in synchronization with the display operation of the display device 12,
By selectively controlling the selector 11 according to the bit content, the visual image is displayed in the designated area on the display screen of the display device 12 where the visual image is desired to be displayed.

The operation of the apparatus shown in FIG. 1 will be described. Data indicating whether or not to display visual image data in dot units in the memory 13 having bits corresponding to all the dots of the display device 12 (for example, "1" for the dot position for displaying the visual image, display "0") is stored for the dot position that is not set.

The data in the memory 13 is displayed on the display device 12.
The bit information corresponding to the display position is read out in synchronism with the display operation of, and is sequentially supplied to the selector 11. Selector 1
1 selects either the visual image data or the display data of the information processing device according to the content of the output bit of the memory 13 and outputs it to the display device 12.

As a result, the visual image is displayed only on the portion set as the visual image display area on the display screen of the display device 12. According to the visual image display control of such an embodiment, the visual image can be displayed only on an arbitrary portion which is desired to be the visual image display area on the display screen.

In the above-described embodiment, the memory 13 having the bits corresponding to all the dots of the display device 12 is prepared,
It was configured to store data whether to display visual image data in dot units, but prepare a memory to store the position data you want to make the visual image display part,
A visual image may be displayed in an arbitrary area on the display screen according to the position data.

[0020]

As described in detail above, according to the present invention, an image processing apparatus for synthesizing and displaying a display image of an information processing device and a visual image of another device on a display screen of the information processing device. In addition, the visual image can be displayed only in the portion desired to be the visual image display area.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional image processing apparatus.

[Explanation of symbols]

 11 ... Selector, 12 ... Display device, 13 ... Memory.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04N 5/45

Claims (4)

[Claims] 1. A place on a display screen for displaying a visual image in an image processing device for displaying a display image of the information processing device and a visual image of another device on the display screen of the information processing device in a composite manner. A storage device for setting the display device, and an arbitrary area for displaying a visual image on the storage device is set by predetermined data, and the display is performed based on the read data of the storage device accompanying the display operation on the display screen. An image processing apparatus for an information processing device, which displays a visual image in a designated area on a screen. 2. The image processing device according to claim 1, wherein the storage device has a bit corresponding to all dots of the display screen, and the display portion of the visual image is selected by the bit. 3. The image processing apparatus according to claim 1, wherein the storage device stores position data desired to be a visual image display portion and displays the visual image in an arbitrary area on the display screen according to the position data. 4. The image processing apparatus according to claim 1, 2 or 3, wherein a semiconductor memory element is used as the memory device.