JPS6135558B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a graphic/character display device, particularly a host/character display device.
A function that stores character codes from the data processing device and/or keyboard in a character buffer to display characters, and a function that stores character codes from the data processing device and/or keyboard in the character buffer, and stores them in the image memory in the form of dot patterns in response to graphic pattern designation input from the host data processing device. A graphic/character display device having a function of storing and displaying images is configured such that the character buffer and the image memory can be respectively set by inputting from the keyboard in response to instructions from a command control section. The present invention relates to a graphic/character display device with improved display flexibility between image display and character display.

Conventionally, a display device has a character display device that receives a character code and displays the corresponding character, and an image memory that stores dot information corresponding to the display screen and displays it. 〓〓〓〓
Graphic display devices existed, and display devices had the function of either one of them. Correspondingly, a graphic/character display device that has the functions of both the character display device and the graphic display device has been considered, and has a form in which the character display device compensates for the lack of conversational ability of the graphic display device. It has become like that.
However, this device has a combination of the graphic display function and the character display function, and all information input from the keyboard is input to the character buffer. For this reason, the image input function of conventional graphic display devices, in which image patterns are input using a keyboard, has been lost.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems by making it possible to input information from a keyboard into a character buffer and an image memory, respectively. Therefore, the graphic/character display device of the present invention includes an instruction control unit, a character buffer that stores a given character code in correspondence with a display screen, a character control unit that controls the character buffer, and a character buffer that stores a given character code in correspondence with a display screen. A character that generates a character pattern corresponding to the content based on the content of
a generator, a pattern generation section that generates a specified graphic pattern, an image memory that stores output from the pattern generation section in correspondence with dots on a display screen, a display display, and a display control for the display display. In the graphic/character display device, which includes at least a display control section for performing control, a keyboard, and a keyboard control section for performing control corresponding to the keyboard, the pattern generation section is provided corresponding to the pattern generation section and generated via the generator. a key input character for generating a dot pattern to be superimposed on an image pattern already stored in the image memory or to store the dot pattern alone in the image memory;
a generator, and a mode switching section that switches input information input from the keyboard to the pattern generation section and the character control section in response to instructions from the instruction control section; A first mode sets the input information input from the keyboard to the character buffer via the character control section, and a character pattern obtained by indexing the key input character generator is set to the image/image. and a second mode for setting in the memory.
It is characterized in that the content on the character buffer and the content on the image memory are displayed on the display either individually or in combination. This will be explained below with reference to the drawings.

The figure shows the configuration of an embodiment of the present invention.

The code 1 in the figure is a figure/character display device, and 2 is a figure/character display device.
CRT display, 3 is keyboard, 4 is host data processing unit interface control unit, 5
1 is an instruction control unit, 6 is a pattern generation unit, 7 is an image memory, 8 is a character control unit, 9 is a character buffer, 10 is a display control unit, 11 is a character generator, 12 is a keyboard control unit, and 13 is the present invention The key input character generator provided in 14 represents a mode switching section.

The host data processing device controls the graphic/character display device 1. When characters are displayed using the character display function from the host data processing device, the process is as follows. That is, the host data processing device issues a command to the command control section 5 via the interface control section 4, and sends out a character code. The instruction control unit 5 transfers the character code to the character control unit 8, and the character control unit 8 transfers the character code to the CRT.
Character position on the display screen on Display 2 (80 characters x
24) is stored in character buffer 9. The contents of the character buffer 9 are read out and sent to the display control section 1.
0, the character generator 11 is indexed, the character pattern is extracted, and then the CRT
displayed on Display 2.

Further, when an image is displayed using the graphic display function from the host data processing device, it is performed as follows. That is, the host data processing device issues a command to the command control unit 5 via the interface control unit 4 and sends graphic instruction information. The instruction control unit 5 transfers the graphic instruction information to the pattern generation unit 6, and the pattern generation unit 6 generates an image pattern of the graphic based on the graphic instruction information and stores it on the image memory 7. That is, the image memory 7 has a dot storage area corresponding to a display screen of, for example, 1000 x 1000 dots.
and stored in the form of a dot pattern. The contents of the image memory are read out and sent to the display control section 10.
and displayed on a CRT display.

Of course, it goes without saying that the above-mentioned character display and image display can be combined and displayed in the form of OR logic.

Input from keyboard 3 is sent to keyboard control unit 1
2. In the case of the present invention, switching to the mode switching unit 14 is controlled by instructions from the host data processing device. It is displayed using the character display function by key input. In the first mode, input information from the keyboard 3 is transferred to the character control section 8 via the mode switching section 14. The subsequent operations are the same as in the case of character display from the host data processing device. In the second mode in which an image is displayed using the graphic display function in response to key input, input information from the keyboard 3 is transferred to the pattern generating section 6 via the mode switching section 14. At this time, the pattern generator 6 indexes the key input character generator 13 based on the input information as necessary, and stores the character pattern as a dot pattern on the image memory 7 in accordance with the input information. do. The subsequent operations are the same as in the case of image display from the host data processing device.

As in the case of the present invention, by making it possible to store information corresponding to input information from the keyboard in both the character buffer 9 and the image memory 7, the following display performance can be obtained. This increases the flexibility of display on display devices. That is, when displaying characters together on a graph displayed in an image pattern, for example, (A) input desired characters from the keyboard 3 into empty positions of the graph already stored in the image memory 7; Stored in the form of a dot pattern.
In such a usage mode, it is relatively difficult to modify input characters, but when outputting a graph containing characters as a hard copy, for example, it is sufficient to output the contents of the image memory 7 as is.

(B) After storing, for example, a graph in the image memory 7, a desired character code is stored in the character buffer 9, and the contents of the image memory 7 and the contents of the character buffer 9 are displayed together. do.
In this type of usage, you can easily modify the character display (modify the contents of character buffer 9).
It is also possible to delete only the characters (delete the contents of the character buffer 9) from a graph containing characters once displayed. Furthermore, if only the characters in a graph containing characters are to be deleted to obtain a hard copy, for example, it is sufficient to output only the contents of the image memory 7.
Further, the characters on the display made by this method can be confirmed and then stored in the image memory 7.

As described above, according to the present invention, information corresponding to input from the keyboard can be stored in both the character buffer and the image memory.
This increases the degree of freedom in display formats, and is extremely convenient when, for example, modifying or erasing characters on a graph, or when making a hard copy of a graph containing characters.

[Brief explanation of the drawing]

The figure shows the configuration of an embodiment of the present invention. In the figure, 1 is a graphic/character display device, 2 is a display, 3 is a keyboard, 5 is an instruction control unit, 6 is a pattern generation unit, 7 is an image memory, 8 is a character control unit, 9 is a character buffer, and 10 is a display control unit,
Reference numeral 11 represents a character generator, 13 represents a key input character generator, and 14 represents a mode switching section. 〓〓〓〓〓

Claims (1)

[Claims] 1. A command control unit, a character buffer that stores a given character code in correspondence with a display screen, a character control unit that controls the character buffer, and a character pattern that corresponds to the content based on the content of the character buffer. a character generator that generates
a pattern generation section that generates a designated graphic pattern; an image memory that stores output from the pattern generation section in correspondence with dots on a display screen;
A graphic/character display device that includes at least a display, a display control unit that performs display control on the display, a keyboard, and a keyboard control unit that performs control corresponding to the keyboard, which corresponds to the pattern generation unit. The dot pattern received and generated through the generator is superimposed on the image pattern already stored on the image memory, or the dot pattern is stored alone on the image memory. a key input character generator that generates the dot pattern;
and a mode switching section for switching input information input from the keyboard to the pattern generation section and the character control section in response to instructions from the instruction control section; , a first mode in which input information input from the keyboard is set in the character buffer via the character control section; and a character pattern obtained by indexing the key input character generator into the image memory. The second mode to be set is configured to be switchable, and the content on the character buffer and the content on the image memory are displayed on the display, either individually or in combination. A graphic/character display device characterized by: