JPS6038713B2 - Display device control information display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control information display method for a display device in which the application position of control information for managing the screen is indicated by a cursor and is displayed in a status display area on the display screen. be.

When displaying general characters on a display device using input display information, the input display information includes information for managing the screen, such as control information indicating the attributes of the displayed characters (high brightness, blinking, etc.). .

The operation of this control information is only executed and not displayed on the display screen. In addition, some general characters may be hidden. Conventionally, in order to display control information and non-display characters that are not displayed, a tester has been used to detect the information and assign it to an appropriate character for display, but this requires a complicated configuration and procedure. An object of the present invention is to provide a control information display method for a display device that can easily display the contents of control information for managing a screen. In order to achieve the above object, a control information display method for a display device includes a display unit having a data display area and a status display area for displaying the status of the display device, and a display unit that corresponds to the data display area and displays information in the area. A data display buffer stores a character code to be displayed as a pair and control information indicating an attribute of this character code, a state display buffer stores state information corresponding to the previous state display area, and a data display buffer stores an arbitrary character code in the data display area. a cursor register for storing the current position of a cursor to be moved to a display position; and means for instructing confirmation of the contents of the control information; When confirmation is instructed, the content of the control information for which confirmation is instructed is read by reading the corresponding control information in the data display buffer based on the stored contents of the cursor register and writing it to a predetermined address on the status display buffer. is characterized in that it is displayed in the status display area.

The present invention will be described in detail below with reference to examples.

FIG. 1 is an explanatory diagram of a display screen according to an embodiment of the present invention.

The figure shows a specific example of displayed characters on the display surface of the display device.

In other words, the solid line English letters (A to E) 3 are display characters, the dotted line numbers (1 to 3) 32 are non-display characters, and the thick line English characters (
It is assumed that X to Z) 33 are high-intensity characters. Control codes indicating these attributes are inserted before each character code in the input display information, and predetermined operation control is performed from this control code N. However, the contents of this control code are not displayed on the screen. If an operator wanted to check the contents of the control code, the only way to do so was to use a tester, as described above. On the other hand, a status display area 2 is provided at the bottom of the display surface 1, and the normal and abnormal operating statuses of the display device are displayed by lamps, marks, etc. 5.

In the present invention, this status display area 2 is used to display control codes.

If the operator wants to check the contents of the control code,
1 of the status display area 2 by moving the cursor 6 on the display surface 1 to a desired position and pressing a predetermined switch.
The control code content 7 at the cursor position is displayed as a 16-ship code. Also, as shown in parentheses, the column at the cursor position (
R), displayed together with line (C). FIG. 2 is an explanatory diagram of a control circuit according to an embodiment of the present invention. In the figure, the keyboard
Input/output (1/0) input display information by port 18
7 and a data bus 20 to the microprocessor (
MPU) 11.

In this case, the switch 19 provided on the 1/0 boat 17 is turned on, and the input display information is sequentially stored in the data display buffer 12 in the buffer 2, and a flag (F) is used to distinguish between display and non-display depending on the contents of the control code. Next, character data (D)
Store. Among the control codes, for non-display, high brightness, etc. that change the attributes of character data, the MPUII issues an operation control command, sends the contents of the corresponding character data to the character generator (CG) 14, and generates a character pattern. The parallel signals are sent to a video signal generator (VSG) 15, converted into serial signals, and displayed on a cathode ray tube (CRT) 16. For normal or abnormal operating status, the MPU 11 stores the generated status in the status display buffer 122 and sends it to the C
Via G14 and VSC15, predetermined characters or marks are displayed in the status display area 2 of the display surface 1 at the same time as the character data. The above is a conventional display method, but in the present invention, if the operator checks the contents of the control code, first, the switch 19 of the 1/0 boat 17
is turned off, and the cursor is moved to the desired control code application position by operating the cursor movement switch on the keyboard 18.

Then, the column of coordinates of the applied position is entered in the cursor register 13 (
R) and line (C) are set, and these coordinate positions are indicated on the display surface 1 of the CRT 16 with a cursor. Based on this coordinate address, the corresponding hexadecimal control code in the data display buffer 12 is extracted and stored in the status display buffer 122. And the stored control code is OCG15, VSG
16 to the CRT 16, and a control code is displayed in the status display area 2 of the display surface 1 as shown by number 7 in FIG. As described above, according to the present invention, the application position of a control code for managing the screen is indicated with the cursor, and the contents of the control code are displayed in the status display area on the display screen.

This allows the operator to easily check the contents of the control code using only a cursor and a switch according to his/her wishes, which is very useful for maintenance and inspection of the display device.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of main parts of an embodiment of the present invention, in which 1 is a display surface, 2 is a status display area, 3 and 33 are display characters, and 4 and 43 are control codes. position, 5 is operating status display, 6 is cursor, 7 is control code display, 1 1 is MPU, 1 2 is buffer, 12 is data display buffer, 122 is status display buffer, 13 is cursor register, 14 is character generation 15 is a video signal generator, 1
6 is CRT, 17 is 1/0 board, 18 is keyboard,
19 indicates a switch. Figure 1 Figure 2

Claims (1)

[Claims] 1 A display section having a data display area and a status display area for displaying the status of the display device, etc., and control information corresponding to the data display area and indicating a character code to be displayed in the area and an attribute of this character code. a data display buffer that stores the information as a pair; a status display buffer that corresponds to the status display area and stores status information; and a cursor register that stores the current position of a cursor that moves to an arbitrary display position within the data display area. , means for instructing confirmation of the contents of the control information, and when the cursor is located at a display position corresponding to the control information and confirmation of the contents of the control information is instructed, the control information is determined based on the contents stored in the cursor register. The present invention is characterized in that by reading the corresponding control information in the data display buffer and writing it to a predetermined address on the status display buffer, the content of the control information for which the content confirmation has been instructed is displayed in the status display area. Control information display method for display devices.