JPS6362079A - Graphic display - Google Patents

Abstract

PURPOSE:To handle image data at a high speed with graphic commands by providing an image input device and a working memory and also providing a processor with a logical arithmetic function in addition to a drawing function. CONSTITUTION:When a control command for the input of image data is sent from a host computer 1, the processor 3 drives the image input device 2 to input and stores the image data in the working memory 8. When a graphic command is sent, it is stored in a segment memory 4, and then interpreted and executed. When it indicates that the part inside a dot array supplied with the graphic command as a border is painted, a free area in the working memory 8 is filled with a logical value '0' and the straight line which connects the given dot array is written in the working memory 8 with a logical value '1'. Then, the part inside the border is painted with the logical value '1' and the area which is painted lastly and the image data in the working memory 8 are ANDed to perform painting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to graphic displays.

BACKGROUND OF THE INVENTION In a conventional graphic display, as shown in FIG. It is often transferred to the graphic display 7. Also, the image data transferred to the graphic display 7 is 1
It is often stored in a segment memory 4 arranged in dimensions. That is, in the conventional method, for example, when attempting to fill in an arbitrary shape with an image captured by the image input device 2, image data in the host computer 1 is transferred to the segment memory 4 of the graphic display 7 through the processor 3. Thereafter, the processor 3 reads out the value of each pixel of the image data in the segment memory 4 and fills the frame buffer 5 with an arbitrary shape. Another example is parallel translation, enlargement/
When performing affine transformation such as reduction, rotation, and shearing and displaying the results on the display device 6, the segment memory 4
The coordinate values of the result of affine transformation for each pixel of the image data in the image data are calculated and transferred to the frame buffer 5.

Problems to be Solved by the Invention In the case of such conventional graphic displays, a large amount of communication cost is required to transfer image data.

Means for Solving the Problems The present invention relates to these points, in that the graphic display itself has an image input device and a working memory intended for storing the input image data. In addition, the processor draws figures such as straight lines, arcs, and fills in the working memory and frame buffer (in addition to the drawing function, it also has data transfer functions with the host computer, reading and writing functions of segment memory, Each of them has a logical operation function that performs logical operations and transfers both independently and between each other.

As a result, it is possible to perform fill-in and affine transformation using image data without the need to transfer image data to and from a host computer. With the above configuration,
To provide a graphic display capable of directly processing image data at high speed using graphics commands.

Effect of the Invention The present invention eliminates the need to transfer image data to and from a host computer using the method described above, so that image data can be handled more quickly and using graphic commands.

Embodiment FIG. 1 is a block diagram showing an embodiment of the graphic display of the present invention. Note that elements common to those in FIG. 2 are given the same numbers. In FIG. 1, a host computer 1 sends graphic commands, graphic attributes such as color and line thickness, and control commands for the graphic display.

A control command is sent to input image data (
Then, the processor 3 drives the image input device 2 such as a television camera and scanner to input image data,
The input image data is stored in the working memory 8.

When a graphics command is sent, the processor 3 temporarily stores the sent graphics command in the segment memory 4. It then interprets and executes the graphical commands in the segment memory.

If the graphic command is such that the inside of the boundary can be filled using the image data in the working memory 8 as a filling pattern using the given dot sequence as the boundary.
The processor 3 first fills all free areas in the working memory 8 with logical zeros. Second, the processor 3 writes a straight line connecting the given series of points based on the origin of the working memory 8 to the working memory 8 with a logical value of 1 in order to create a boundary. Next, the processor 3 fills the inside of the boundary with logical values of 1. Finally, the processor 3 logically ANDs the above-mentioned filled area and the image data already stored in the working memory 8 and transfers it to the frame buffer 5, thereby realizing filling of the predetermined area with the image data. .

Furthermore, if the graphic command is to display the image data in the working memory 8 after undergoing affine transformation such as parallel translation, enlargement/reduction, rotation, and shearing, the processor 3
writes a logical value of zero to an area in the frame buffer 5 corresponding to the result of affine transformation of the image data in the working memory 8. Next, the area of this frame buffer 5 and the specified image data are logically summed and the result is transferred to the same area of the frame buffer 5. As a result, the affine transformed image data can be displayed.

FIG. 2 shows another embodiment of the invention. Elements common to those in FIG. 1 are given the same numbers. The processor is divided into three parts: the main processor 31 is responsible for data transfer with the host computer and reading and writing of segment memory; the logic processor 32 is responsible for the work memory 8 and frame buffer 5; Each performs logical operations and data transfer independently or between each other. Needless to say, it does not have to be a drawing function, and may be divided into a plurality of parts, and the whole function may be a drawing function, a data transfer function, a segment memory reading/writing function, and a logical operation function.

Effects of the Invention As described above, according to the present invention, the host computer 4 is constructed. FIG. 3 is a block diagram showing the configuration of an embodiment. FIG. 3 is a block diagram of a conventional graphic display.

2... Image input device, 3... Processor, 5...
. . . Frame buffer memory, 7. . . Graphic display of the present invention, 8. . . Working memory.

Claims (1)

[Claims] An image input device that captures image data; a working memory that stores and uses the image data captured by the image input device; and a frame that displays graphics and image data. Data can be transferred between the buffer memory and the host computer, logical operations and data can be transferred between the two types of memory alone and between them, and any of the two types of memory can be a processor capable of filling in a graphic area having a shape of , and the processor captures and stores image data from the image input device into the working memory in accordance with a command transferred from the host computer. and processing the image data using graphic commands by performing processing such as filling and affine transformation using the image data stored in the working memory and transferring the processed image data to the frame buffer for display. A graphic display featuring