JPS61208529A - Keyboard input processing system - Google Patents

Abstract

PURPOSE:To improve greatly the operating environment of an operator by producing the commands for the start and end of the keyboard buffer mode as well as the clearing of a keyboard buffer based on the instruction of a program. CONSTITUTION:A processing program produces a screen write command to clear a read input field and set a cursor to its original position in case the read input data has an error. Then the processing program produces a command to clear a keyboard buffer 4. As a result, the key data stored later in the buffer 4 is disused. Furthermore the processing program produces another screen write command. The contents of the buffer 4 are going to be transferred to the screen when an input inhibition state is released. However the display of the meaningless data is avoided since the buffer 4 stores no data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a processing method for displaying data input from a keyboard on a display screen.

〔overview〕

Under the keyboard buffer mode state, keystrokes are stored in the keyboard buffer even when attention is pending, and the data in the keyboard buffer is displayed when a write screen command is issued. In a computer system configured to display information based on a position specified by a cursor on the screen, start (set) keyboard/no/sofa mode based on program instructions, or set keyboard/no/sofa mode. - It is now possible to issue commands to end (reset) the mode and clear the keyboard buffer, thereby greatly improving the operating environment for the operator.

[Prior art and problems]

FIG. 9 is a diagram for explaining a conventional keyboard input processing method. Keyboard input processing is performed as follows. Note that KB is an abbreviation for keyboard.

■ Set to key mode buffer mode according to the operator's key input specification.

■ For example, numbers rlJ, r2J from the keyboard.

Press "3".

■ Press the input key. This places it in an attention-pending state.

■ For example, press number keys r4J, r5J, and r6J. Since it is in the keyboard buffer mode, key inputs are accepted and stored in the keyboard buffer even if input is prohibited due to attention pending.

■ The processing program reads input data “1゜2.
3" is incorrect, clear the input field and reposition the cursor.

■ The processing program releases the input prohibition state.

This causes the contents of the keyboard buffer to be transferred to the display screen, allowing data to be entered in locations not intended by the operator.

As shown in FIG. 9, the conventional key input processing method has the drawback that even if the general-purpose processing program detects an error in input data, the input operation continues, resulting in malfunction. Also, even if the operator wants to stop key operation,
There is also the drawback that input operations continue while the buffering key code is present.

[Purpose of the invention]

The present invention is based on the above consideration, and an object of the present invention is to provide a key input processing method that allows efficient key input and prevents incorrect data from being input.

[Means to achieve the purpose]

Therefore, the key input processing method of the present invention includes a display device, a keyboard device, a display control unit that controls the display device, a keyboard control unit that controls the keyboard device, a keyboard buffer, and a central processing unit. The central processing unit executes screen light commands based on instructions from an application program.
The display controller is configured to be able to issue a keyboard buffer clear command, a keyboard buffer set command, and a keyboard buffer reset command, and the display control unit issues a keyboard buffer clear command, a keyboard buffer set command, and a keyboard buffer reset command. If the mode flag is a predetermined value, display the data in the keyboard buffer on the screen of the display device, and when the keyboard buffer clear command is received, clear the data in the keyboard buffer; When the keyboard buffer set command is received, the keyboard buffer mode flag is set to a predetermined value, and when the keyboard buffer set command is received, the keyboard buffer mode flag is set to the specified value. is configured to set to another predetermined value, and when there is a key input from the keyboard, if the key input is an attention key input and the attention is not pending, the keyboard control unit Generates a keyboard attention interrupt in the application program, and if attention is not pending and the key input is a normal key input, the input data is displayed at the cursor position on the screen, and if attention is pending, the input data is displayed at the cursor position on the screen. If the keyboard buffer mode flag is another predetermined value, the key input is ignored, and if the keyboard buffer mode flag is attention pending and the keyboard buffer mode flag is a predetermined value, the input data is It is characterized in that it is configured to be stored in a keyboard buffer.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram showing an example of a system configuration of the present invention.

In Figure 1, ■ indicates the above 1. a device, 2 a central processing unit, 3 a display control unit, 4 a keyboard buffer, 5 a keyboard control unit, 6 a display device, 7
8 indicates a keyboard device, and 8 indicates a key file device. The central processing unit 2 executes various programs stored in the main storage device 1. The display control unit 3 controls the display device W6 in accordance with commands issued based on program instructions. The keyboard 7 is used to temporarily store the key code sent from the keyboard device 7. The keyboard control unit 5 controls the keyboard device 7 according to commands issued based on instructions from the program.
and the key file device 8.

FIGS. 2 to 5 are diagrams for explaining the operation of the display control section. FIG. 2 is a diagram illustrating the processing of the display control section 3 when receiving a screen write command. Upon receiving the screen write command, the display control unit 3 performs the following processing.

■ Create fields, display data, position the cursor, etc. on the display device 7.

■ Check whether there is a specification to cancel keyboard input prohibition. If there is a cancellation specification, process (■) is performed, and if there is no cancellation specification, the process ends.

■ Check whether the keyboard buffer mode flag is "1". If Yes, process (2) is performed, and if No, the process ends.

■ Display the data stored in the keyboard buffer 4 from the current cursor position. It will end after that.

FIG. 3 is a diagram illustrating the processing of the display control unit 3 when a keyboard buffer clear command is received. Upon receiving the keyboard buffer clear command, the display control unit 3 clears the data in the keyboard buffer 4.

FIG. 4 is a diagram illustrating the processing of the display control unit 3 when a keyboard buffer set command is received. Upon receiving the keyboard buffer set command, the display control unit 3 sets the keyboard buffer mode flag to "1" and displays an indicator indicating that keyboard buffer input is possible.

FIG. 5 is a diagram illustrating the processing of the display control section 3 when a keyboard buffer reset command is received. Upon receiving the keyboard buffer reset command, the display control unit 3 sets the keyboard buffer mode flag to "0" and turns off the indicator.

FIG. 6 is a diagram for explaining the operation of the keyboard control section. The keyboard control unit 5 performs the following processing.

■ When there is a key input, it is checked whether attention is pending or not. If Yes, process ■ is performed; if No, process ■ is performed.

■ Check whether the attention key has been pressed.

When the answer is Yes, the process ``■'' is performed, and when the answer is No, the process ``■'' is performed.

■ Issue a keyboard attention interrupt to the application program via the supervisor.

■ Display input data based on the cursor position.

■ Check whether the keyboard buffer mode flag is 'l'. If Yes, process (2) is performed, and if No, process (2) is performed.

■ Ignore key input.

■ Store the input key code in the keyboard buffer 4.

FIG. 7 is a diagram for explaining the operation of the application program when receiving an attention report. Upon receiving the attention report, the application program performs the following processing.

■ Read the screen input data into area A.

■ Send the expected value data of the corresponding input field to area B.

■ Compare the data in area A and the data in area B to check whether the data in area A is correct.

If Yes, the process ends, and if No, process (■) is performed.

■ Issue a keyboard buffer clear command. Of course, rather than the application program directly issuing the keyboard buffer clear command, the firmware issues the keyboard buffer clear command when the application program issues a specific macro instruction. The same applies to other commands.

FIG. 8 is a diagram for explaining the keyboard input processing method of the present invention.

■ Set the processing program to keyboard buffer mode.

■ For example, press number keys rlJ, r2J, and r3J.

■ Press the input key. This allows attention and
It will be in a pending state.

■Press number keys r4J, r5J, and r6J.

Since the mode is the keyboard buffer mode, key inputs are accepted and stored in the keyboard buffer 4 even when input is prohibited due to attention pending.

■ The processing program reads the input data “123”
If there is an error, issue a screen write command that clears the read input field and sets the cursor to its original position.

■ The processing program performs keyboard, buffer, clear,
Issue a command. As a result, the key data stored in the keyboard buffer 4 is discarded.

■ The processing program issues a screen write command to release the input inhibited state. Note that if the specific bit of the screen write command is a predetermined value (for example, on), the input inhibited state is canceled. This causes the contents of keyboard buffer 4 to be transferred to the screen, but
Since there is no data in the keyboard buffer 4, meaningless data r456J will no longer be displayed in the first field.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to prevent the input of incorrect data, and it is also possible to significantly improve the operating environment regarding key input by the operator.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of the system configuration of the present invention, FIG. 2 is a diagram explaining the processing of the display control unit 3 when a screen write command is received, and FIG. FIG. 4 is a diagram explaining the processing of the display control section 3 when a command is received. FIG. 4 is a diagram explaining the processing of the display control section 3 when a keyboard buffer set command is received. FIG. FIG. 6 is a diagram explaining the operation of the display control unit 3 when a buffer reset command is received, FIG. 6 is a diagram explaining the operation of the keyboard control unit, and FIG. 7 is an operation of the application program when an attention report is received. Diagram to explain,
FIG. 8 is a diagram for explaining the keyboard input processing method of the present invention, and FIG. 9 is a diagram for explaining the conventional keyboard input processing method. 1... Main storage device, 2... Central processing unit, 3...
Display control unit, 4...Keyboard control unit, 5...Keyboard control unit, 6...Display device, 7...Keyboard device, 8...Key file device.

Claims (1)

[Claims] A display device, a keyboard device, a display control unit that controls the display device, a keyboard control unit that controls the keyboard device, and a keyboard device.
a buffer, and a central processing unit, and the central processing unit executes a screen write command, a keyboard buffer clear command, a keyboard buffer set command, a keyboard buffer set command, and a keyboard buffer set command based on instructions from an application program.
The display control unit is configured to be able to issue a buffer reset command, and the display control unit sets the keyboard buffer mode when receiving the screen write command.
If the flag has a predetermined value, the data in the keyboard buffer is displayed on the screen of the display device, and when the keyboard buffer clear command is received, the data in the keyboard buffer is cleared, and the keyboard - When a buffer set command is received, the keyboard buffer mode flag is set to a predetermined value, and when a keyboard buffer reset command is received, the keyboard buffer mode flag is set to another predetermined value. When there is a key input from the keyboard, if the key input is an attention key input and the attention is not pending, the keyboard control unit causes the application program to input the keyboard input from the keyboard. Generates an attention interrupt, displays the input data at the cursor position on the screen if attention is not pending and the key input is a normal key input, and displays the input data at the cursor position on the screen while attention is pending and the keyboard buffer - If the mode flag is another predetermined value, ignore the key input, and if attention is pending and the keyboard buffer mode flag is a predetermined value, store the input data in the keyboard buffer. A keyboard input processing method characterized by being configured to.