JPS60126697A - Graphic display system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to a graphic display device, and more particularly to a graphic display method that allows pseudo-graphic display to be performed directly from a character generator without using a display memory.

Prior Art and Problems A full-dot graphic display device consists of a large number of display elements such as liquid crystals arranged in a matrix on a plane, and is used for graphically displaying characters, two figures, and the like. Conventionally, in order to perform display in such a full dot graphic display device, a display memory has been required in the control device or drive device. In other words, the control device or the drive device is equipped with a dot memory that has the same arrangement as the display elements that make up the display device, and the image information to be displayed is once stored in this memory and then read out, and the output of each memory element is used to respond to each image. Display was performed by controlling display elements.

However, having such a display memory
This complicates the circuit configuration, including the associated writing and reading circuits, and inevitably increases the burden in terms of space and cost. Even when it is possible to do so, there is a problem in that all display memories must be provided.

OBJECT OF THE INVENTION The present invention attempts to solve the problems of the prior art, and its purpose is to directly drive a display device by a character generator without using a display memory, thereby creating a pseudo-graphic display. The object of the present invention is to provide a graphic display method that can perform the following.

Embodiment of the Invention FIG. 1 shows the structure of an embodiment of the graphic display system of the invention. In the figure, 1 is a control device, 2 is a full-dot graphic display device, and 5 and 4.5 are drive devices, respectively.

The control device 1 controls the display on the full-dot graphic display device 2, and has a built-in character generator that generates an arbitrary number of characters. The character generated by the character generator is 1, for example a:
It consists of a character font with 5 dots in the (horizontal) direction and 7 dots in the x and y (vertical) directions. The output of the control device 1 is transmitted to the drive device 3,
4,5E is connected. The driving devices 3 and 4.5 drive the full dot graphic display device 2, and the driving device 6 drives columns C1 to C, , C, to CI of the display device 2.
I, C1,~'17 y Cl1l~C0, the driving device 4 drives the column 'O+ C6*'Hy C1 of the display device 2
8s C24, respectively. Further, the drive device 5 is connected to the clocks R0 to R71 of the display device 2.

Now, the 5×7 dot pattern p, -8 shown in FIG. The information on the corresponding column of pattern P is given to columns C1 to C31, the information of the corresponding column of pattern P is given to columns C4 to C17, and the driving device 4 to columns C0 and C6.

'If t '1g #Give C24 information for each column of pattern P4 for each t column (divided into two). At the same time, information for each pattern P1 to R2 of display device 2 is provided via drive unit!!5. The output of each of these driving devices is controlled in a time-division manner so that information in the row direction and column direction is given to each dot in one display device!12 at the same timing. As a result, a graphic display as shown on the display device 2 in FIG. 1 can be performed.

As described above, in the graphic display method of the present invention.

Information for each character generated from a character generator is displayed at an arbitrary position on a full dot graphic display device, and information in each column between characters on one display device is collected and registered, and this information is read out. Since each column is separated and each column is driven, pseudo-graphic display can be performed in a full-dot graphic display device without using R unnecessary memory. At this time, information on inter-character columns may be registered in the same number of columns as the characters, or may be registered in a different number of columns. Further, the number of columns between characters is not limited to one column, and may be any number of columns.

As described in detail, the graphic display method of the present invention includes a character generator in which characters are registered, an inter-character column information registration means in which information to be displayed in inter-character columns is collectively registered, and a character generator. The present invention provides a means for driving the display device for each character based on the information in the column information, and a means for separating the information in the inter-character column information registration means and driving the display device for each character-to-character column. The graphics device can be directly driven by the information from the character generator without having to do so, thereby simplifying the device configuration and reducing the cost.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of an embodiment of the graphic display method of the present invention, and FIG. 2 is a diagram showing an example of registration of dot patterns.01...control device,2...full dot graphic Display device, 3, 4.5...Drive device patent applicant Fujitsu Limited

Claims (1)

[Claims] A graphic display device equipped with a full-dot graphic function includes: a character generator that registers characters; an inter-character column information registration means that collects and registers information to be displayed in columns between characters in the display device; A standby graphic display comprising means for driving a display device for each character based on information, and means for separating information from the inter-character column information registration means and driving a display device for each character-to-character column. method.