JPH06130935A - Graphic fast display system - Google Patents

Abstract

PURPOSE:To provide the graphic fast display system which displays a graphic picture at a high speed on an FA monitor. CONSTITUTION:A display processor 7 expands vector data of a rectangular picture of arbitrary size read out of a flash ROM card 5 in a working area 82 of a display memory 8 by temporary plotting to obtain a two-dimensionally arranged bit pattern, and it is converted to one-dimensionally arranged data for storage, and this data is successively transferred to and stored in the dot pattern storage area of the display memory 8, and the transfer destination address and the rectangular data size are registered in a RAM 4 as a register file name. At the time of display execution, linearly arranged data corresponding to the registered film name is read out of the dot pattern storage area and is converted to two-linearly arranged data and is transferred to the display data area and is displayed on a graphic display panel 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic high-speed display system, and more particularly to a graphic high-speed display system used for an FA monitor for displaying operating states of various equipment such as factories and for displaying various data graphically.

[0002]

2. Description of the Related Art In industrial machines and devices, a graphic display device for monitoring the operating state thereof is required. For example, it is necessary to make it possible to display the position of moving workpieces and conveyed objects, the opening and closing of valves and switches, and the states of various actuators in an easy-to-understand manner. However, the shapes and sizes of various actuators vary depending on the type of industry and purpose, and it is desirable that each user be able to freely draw and register. Also, when there are many objects to be monitored and the operating state changes at one time, high-speed response of display is required, but when the user creates a vector graphic and puts it in a file, it involves file processing and drawing processing. Therefore, the response of the display is deteriorated.

That is, the graphic display is performed by writing a dot pattern corresponding to a graphic or picture image in the display area of the frame buffer memory, and the dot pattern normally stores original data for producing the dot pattern in another memory. Has been done. If the original data is a dot pattern as per the image, memory transfer is simply required, so processing is fast. However, in the case of data composed of line types and vector coordinates created by CAD etc., the process is complicated because the dot pattern is written by drawing, and it is practical to process it with software such as circles and filling. It takes so much time. Dedicated display processors that have functions for high-speed drawing, rotating copy, and color support are also commercially available. As an example of their performance, the drawing speed is 400 nsec / bit at the maximum, and the copy is 25 n at the maximum.
The processing speed is 16 times higher than that of sec / bit.

[0004]

This indicates that it is faster to use an image pattern format that can be processed by copying than a vector format that requires drawing. However, this format has the problems of drawing performance and memory consumption. There is. For example, a typical screen size of a display is 640
× 400 dots, 1/8 of that, 160 × 20
A rectangle of 0 dot size has 32000 dots, and occupies 4000 bytes of memory even when displayed in monochrome. Moreover, the rectangle of 32000 dots is 1 × 16 × 16 = 256 dots which is a general external character font.
It is 25 times, and it is unrealistic to draw by the dot printing method which is generally used. In addition, graphic elements such as lines, squares, and circles expressed in vector format are each 8 bytes, and the average number of elements required to represent the inside of the rectangle is 50 bytes.
Assuming that the number is 8 × 50 = 400 bytes, the image pattern format is 1 compared with the figure represented by the vector.
It consumes 0 times the memory area.

Therefore, a main object of the present invention is to provide a graphic high-speed display system capable of reducing the memory capacity and displaying the image at high speed by expressing the original image forming the user file in the vector format. Is.

[0006]

SUMMARY OF THE INVENTION The present invention is a graphic high-speed display system for displaying an image at high speed in an arbitrary rectangular display area, and is a rectangular of arbitrary size including vector graphics and character codes freely created by the user. An image as an original image, a memory file for storing the original image group,
A display frame memory, a two-dimensional array data memory for temporarily drawing and developing the original image data, and a one-dimensional array data memory for converting the expanded image data into one-dimensional array data and storing the data. Includes 1-dimensional array data in order to draw and develop the original image data in the 2-dimensional array data memory as a pre-process when the power is turned on or when the screen is switched and temporarily store the expanded image data, and to store the expanded image data with 100% memory efficiency. The data is converted into one-dimensional array data according to the memory width of the memory and sequentially transferred to the one-dimensional array data memory. The transfer destination address of the transferred one-dimensional array data and the identification data indicating the rectangular size are registered, and the display data is displayed. At the time of execution, the corresponding one-dimensional data is read from the one-dimensional array data memory based on the registered identification data, converted into two-dimensional array data, and displayed as a display frame. By transferring any address frame memory, and displays the 2-dimensional array data.

[0007]

The graphic high-speed display system according to the present invention is
When the power is turned on or the screen is switched, the original image data of the user file is previously drawn and expanded on the two-dimensional array data memory, the expanded image data is converted into one-dimensional array data and transferred to the one-dimensional array data memory, The transfer destination address and the identification data indicating the rectangular size are registered, and when the display is executed, the corresponding one-dimensional data is read from the one-dimensional array data memory based on the registered identification data and converted into the two-dimensional array data. , By transferring the data to an arbitrary address of the display frame memory and storing it,
Data can be displayed at a higher speed than a method of reading from a file and drawing on the frame memory each time display is executed.

[0008]

1 is a schematic block diagram of an embodiment of the present invention. In FIG. 1, the MPU 1 is connected to a ROM 3, a RAM 4, a flash ROM card 5, an external input / output circuit 6, and a display processor 7 via a bus 2. RO
M3 stores a program based on a flow chart shown in FIG. 3 described later, and RAM4 stores data calculated by the MPU1 and the like. The flash ROM card 5 stores original image data in a vector format for display corresponding to each device to be monitored.
By replacing the card 5, any device can be supported. The external input / output circuit 6 is used for each device
A control signal is output from U1 or a control signal from each device is given to MPU1.

A display memory 8 is connected to the display processor 7, and it also has a sequential read function for displaying and executing drawing and array conversion transfer according to data and instructions given by the MPU 1 and storing them. The display memory 8 includes a storage area as shown in FIG. The image data read from the display memory 8 is given to the P / S converter 9, the parallel display data is converted into serial data, and displayed on the graphic display panel 10. As the graphic display panel 10, for example, a liquid crystal display or a CRT display is used.

FIG. 2 is a diagram showing a display area of the display memory shown in FIG. In FIG. 2, the display memory 8 includes a display data area 81, a working area 82, a dot pattern storage area 83, and a character area 84. The display data area 81 corresponds to the display area of the graphic display panel 10 and stores data to be displayed on the graphic display panel 10. The working area 82 is used to draw and develop vector format data into two-dimensional data. The dot pattern storage area 83 stores the one-dimensionally converted display data. The character area 84 stores Chinese characters, English characters, and other character dot patterns.

FIG. 3 is a flow chart for explaining the operation of the embodiment of the present invention. Next, the specific operation of the embodiment of the present invention will be described with reference to FIGS. First, the display processor 7 reads the vector data of the screen from the flash ROM card 5 and clears the necessary rectangular command area of the working area 82 of the display memory 8 as a pre-process when the power is turned on or the screen is switched, and then the drawing expansion is performed. And store it as two-dimensional array data (drawing image 8
5). Then, the display processor 7 displays the working area 82.
The two-dimensional array data stored in 1 is converted into one-dimensional array data and transferred to the dot pattern storage area 83 for storage. This is because the dot pattern as the image data is a two-dimensional array, and considering a real address, there is a difference between a certain dot and the dot immediately below by the horizontal size dot of the graphic display panel 10, and the rectangular size is not one type. For,
If it is transferred as it is, the use efficiency of the memory becomes low, and management and copying are difficult. Therefore, the data is converted into a one-dimensional array and stored in the dot pattern storage area 83 in the order of addresses (stored image 86). Then, the transfer destination address of the dot pattern storage area 83, the rectangular size of the data, and the file name or number as identification data are used as the RAM 4
Register with. By repeating this operation, the image data read from the flash ROM card 5 is sequentially transferred to the dot pattern storage area 83 as one-dimensional array data and stored therein, and the transfer destination address is registered in the RAM 4 as a file name or number as identification data. I'll do it.

At the time of display, the MPU 1 gives a transfer command to the display processor 7 using the file name registered in the RAM 4. The display processor 7 reads the one-dimensional array data from the dot pattern storage area 83 by the given storage address, rectangular size, and display address, converts it into two-dimensional array data, and transfers it to the designated address in the display data area 81 (display. Image 87). The data transferred to the display data area 81 is converted into serial data by the P / S converter 9 and displayed on the graphic display panel 10.

[0013]

As described above, according to the present invention, the image data of the arbitrarily sized rectangle formed by the vector data having the high memory efficiency is temporarily drawn and developed into the two-dimensional array data as the image, and immediately the one-dimensional storage format is used. By the method of converting and transferring to the data, the subsequent image data is sequentially transferred to the one-dimensional array data memory, and the identification data indicating the transfer destination address and the data size is registered in advance. Then, the corresponding one-dimensional data is read from the one-dimensional array data memory, converted into the two-dimensional array data, and displayed as the target image. Therefore, the process of transferring the display data to the memory is all that is required. Display can be realized.

[Brief description of drawings]

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

FIG. 2 is a diagram showing contents stored in a display memory shown in FIG.

FIG. 3 is a flow chart for explaining a specific operation of the embodiment of the present invention.

[Explanation of symbols]

 1 MPU 2 bus 3 ROM 4 RAM 5 flash ROM card 6 external input / output circuit 7 display processor 8 display memory 9 P / S converter 10 graphic display panel

Claims (1)

[Claims] 1. A graphic high-speed display method for displaying an image at high speed in an arbitrary rectangular display area, wherein a rectangular image of arbitrary size including vector graphics and character codes freely created by a user is used as an original image, and A memory file for storing an original image group, a display frame memory, a two-dimensional array data memory for drawing and developing the original image data into a two-dimensional array data, and image data to be displayed are converted into one-dimensional array data. And a one-dimensional array data memory for storing the original image data when the power is turned on or when the screen is switched, the original image data is temporarily drawn and developed and stored in the two-dimensional array data memory, and the expanded image data is stored as described above. The one-dimensional array data memory is converted into one-dimensional array data according to the memory width of the one-dimensional array data memory and sequentially transferred to the one-dimensional array data memory. The transfer destination address of the original array data and the identification data indicating the rectangular size are registered, and when the display is executed, the corresponding one-dimensional data is read out from the one-dimensional array data memory based on the registered identification data, and the two-dimensional data is read. A high-speed graphic display system, wherein a target image is displayed by converting it into array data and transferring it to the display frame memory.