JPS583463A - Hard copy controlling system for graphic display device - Google Patents

Abstract

PURPOSE:To obtain a hard copy for sharp picture with comparatively low cost, by reading a memory content of a graphic display device stored in an instruction code train and expanding the content into a bit pattern capable of corresponding to a printer. CONSTITUTION:When a hard copy of a graphic display device is required, a controller (not shown) reads out an instruction from a refresh butter memory 2-1 and interpretes the instruction at an instruction interpreter 2-3. A line segment generated at a line segment generator 2-4 is given to a display 2-5 to stop a series of display operation, the instruction is interpreted at the controller and dot trains generated from the line segment generator through the approximation of dot train is written in the bit pattern memory (not shown). The hard copy is obtained by driving a printer (not shown), a sequentially reading out the bit pattern and transferring the pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hard copy of a random refresh type graphic display device, and more particularly to a control method for making a hard copy of a printing device capable of printing a dot pattern for each rask.

Conventionally, this type of hard copy has been produced by displaying the same screen as the display on a CRT built into the printer and exposing it to copy paper (1iE photo), but this method is very expensive and has poor image quality. The runner-up is that there is no shortage of them.

It is an object of the present invention to provide a printing device that is relatively inexpensive and can provide clear image quality without using photographic technology, such as a multi-reflection stylus type electrostatic recording printer. The object of the present invention is to provide a control system that can print hard copies using a laser printer or the like.

According to the present invention, this purpose is achieved in a system in which the H@ tension device is connected to an electronic computer 6ζrandom refresh^ type graphic display device and a printing device jIL capable of printing a dot pattern for each rask. When making a hard copy 8 of the display contents of the graphic display device into a printing device, the instruction contents of the graphic display device glue 7 receiver buffer memory are read, the instructions are decoded and executed, and the bit pattern memory is expanded. This is achieved by providing a hard copy control method for a graphic display device, characterized in that the contents of the bit pattern memory are sequentially read out using a raster scan method and transferred to the printing device to make a hard copy.

The present invention allows a control device (or computer) to read the contents of a graphic display device's buffer 7 memory, which are stored in the form of an instruction code string, execute the instructions, and develop the contents into a bit pattern compatible with a printing device. An embodiment thereof will be described below in detail with reference to the drawings.

FIG. 1 is a schematic diagram of the system of the present invention. 1 is a control device or an electronic computer, 2 is a random reflex type' graphic display device, and 3 is a machine capable of printing a dot pattern for each rask. Figure 2 shows the configuration of the control device 1, and Figure 3 shows the configuration inside the graphic display device 2◇ The following 1t! The control method according to the present invention will be explained with reference to FIGS. 1 to 3 aiQ.

When it becomes necessary to make a hard copy of the graphic display device 2 in a configuration in which a random refresh type graphic display device 2 and a print fit 3 are connected to the control device 1.

The control device 1 reads the command from the fresh buffer memory 2-1 of the graphic display device 2, decodes it with the command decoder 2-3, and gives the line segment generated by the line segment generator 2-4 to the display 1112-5. A series of operations for displaying is stopped by a stop command, and the command at the beginning of the refresh and buffer memory 2-1 is decoded by the instruction decoder 1-1 of the heave-setting control device 1, and a line segment is generated based on the proximity of the point sequence. When the dot sequence generated by the device 1-2 is written to the bit pattern memo IJI-3, a message is simultaneously sent to the graphic display device 2 to execute and display the command without going through the reflex memory 2-1. Fingerprint (direct display command)
IJ2-1
Execute the command read from the command line.

This l-instruction execution memory address register 2-2 stores the address of the next instruction to be executed, so the control device 1 clears this memory address register 2-2 and refreshes &/ifa memory. Issue the command 2-1 and execute the above operation.

This operation is performed so that the contents of the memory address register 2-2 are the starting address (XX) of the refresher buffer memory 2-1.
By repeatedly executing the operation with the reed indicated by X), the figures and characters displayed on the graphic display device 2 are generated in the bit pattern memory 1-3 of the control device 1 by dot sequence approximation.

By activating this rear m device 3 and sequentially reading and transferring this bit pattern using the data scan method, a new bird copy can be made.

According to an embodiment of the present invention, there is provided a printing device created not for the purpose of connecting to a graphic display device, and a graphic display device created not for the purpose of controlling the printing device. Also easily No.1
- You can get a copy.

According to the present invention, it is relatively inexpensive and has high definition.1. A hard copy of a random refresh type graphic display device can be produced using a printing device such as a multi-stylus electrostatic printer, a radar printer, or the like.

Furthermore 1. Hard copies can easily be made using graphic display devices that are not intended to control the printing devices described above.

[Brief explanation of the drawing]

FIG. 1 shows a system configuration diagram of the present invention, FIG. 2 shows a configuration diagram inside a control device or computer, and FIG. 11g3 shows a configuration diagram inside a graphic display device 7. In the compilation, 1 is a control device or electronic computer, 2 is a random refresh type graphic display device, 3 is a printing device, in FIG. 2, 1-1 is an instruction decoder, and 1-2 is a point sequence approximation. In FIG. 3, 2-1 is a fresh buffer memory, 2-2 is a memory address register, and 2-3 is a bit pattern memory.
-3 indicates the instruction solution as, 2a indicates the random scan line segment generator, and 2-5 indicates the display S, respectively. Figure 1

Claims (1)

[Scope of Claims] In a system in which a random refresh island type graphic display device and a printing device capable of printing a dot pattern for each rask are connected to a control device or an electronic computer, a display of the graphic display device on the printing device is provided. When taking a hard copy of the contents, the graphic display device reads the contents of the instructions in the buffer memory, decodes and executes the instructions, develops them in the bead pattern memory, and scans the contents of the pit pattern memory using the last tag scan method. A hard copy control method for a graphic display device in which the data is sequentially read out and transferred to the printing device to remove the data.