JPS62139025A - Controller for input given from keyboard - Google Patents

Abstract

PURPOSE:To facilitate an easy processing and easy handling with the titled controller by inhibiting the display of the out-range input characters until a CR key is depressed by a character type deciding means in case the number of input characters exceeds the limit value when the characters are supplied from a keyboard. CONSTITUTION:When the presence or absence of the input signal given from a keyboard 1 is decided together with an input action, a limit range deciding means 41 counts the number of input characters to decide whether or not the number of these characters is set within the limit range. If it is decided the number of input characters exceeds the limit range, the position of a cursor is moved back by a step by the cursor control. Then the input characters out of the limit range are disued to a read- away part 2. While it is decided whether the input signal is equal to a CR key or not if the number of input characters is set within the limit range. Then an operation is started if a CR key is confirmed. When the CR key input signal is transmitted, the character type is decided by a character deciding means 42 and the designated character type is displayed on a CRT3. If no coincidence of character types is obtained, the input data is read away and not displayed. Then the cursor is set to its original position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an input control device from a keyboard in conversational processing.

[Conventional technology]

Generally, the operation of reading input characters from a keyboard using Fortran or Basic is performed when a carriage return key (hereinafter referred to as CR key) is pressed. Therefore, until the (CR) key is pressed, input of the specified character type is possible. Furthermore, since it is not possible to determine the number of characters input, it is necessary to determine whether the input is correct or incorrect.

FIG. 3 is a block diagram showing a conventional keyboard input control device of this type. In the figure, 1 is a keyboard, 2 is a disposable reading section, and 3 is a visual display device such as a cathode ray tube display device (hereinafter referred to as CRT). ), 4 is a character type determination means.

Next, the operation will be explained in detail. When the character type determination means 4 determines that the character types match, the input character signal sent from the keyboard 1 is transferred to the CRT 3.
Display output to. Here, if it is determined that the character types do not match, an error will occur and the text will be discarded by the discard unit 2, and the conversational processing will be forcibly terminated. Input signals from the keyboard 1 are displayed and output to the CRT 3 until the <CR> key is pressed.

[Problem that the invention seeks to solve]

Conventional keyboard input control devices are configured as described above, so input from the keyboard must be read as a read statement in Fortran, which makes it difficult to judge input characters, and makes it difficult to read (CR) input characters. ) Since input is free until the key is pressed, there are problems such as the input restriction frame cannot be expressed on the screen.

Another problem with Basic was that if an input exceeded the input limit, characters outside the frame would remain on the screen.

Additionally, there were problems such as a forced termination due to an error if the input character was different from the specified character type.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a keyboard input control device that can control the number of characters input from the keyboard and can determine the input characters.

[Means for solving problems]

The input control device from the keyboard according to the present invention determines the number of characters input from the keyboard by the limit frame determining means in the character type determining means, and when the number of characters is outside the limit frame, displays a message to that effect. Characters outside the limit are read and discarded, and when the CR> key is pressed, the character type of the character signal within the limit frame outputted from the limit frame judger is judged as correct or incorrect by the character judge means, and the character type is determined. When they match, K is output to the visual display device and displayed, and when they do not match, K is read and discarded.

[For production]

The character type determination means in this invention is configured to detect the character type when the number of input characters exceeds the limit when inputting characters from the keyboard.
Controls characters input outside the frame not to be displayed on the screen until a key is pressed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, the same or corresponding parts as in FIG. 3 described above are designated by the same reference numerals.

41 is a limit frame determining means for determining the number of input characters, and when a character signal exceeding the limit frame is input, displays a message to that effect, and controls character signals outside the limit frame to be discarded to the discard section 2; 42; When the CR key is pressed, it is determined whether the character type of the character signal within the limit frame outputted from the limit frame determining means 41 is correct or incorrect, and if it is determined that the character types match, the character signal is output to the CRT 3. If it is determined that they do not match, the character determination means controls the discard unit 2 to discard the characters.

FIG. 2 is a flowchart showing a program installed in the input control device of FIG.

Next, the operation will be explained. This will be explained with reference to FIGS. 1 and 2.

If, in step 4A, the presence or absence of an input signal sent from the keyboard 1 is determined.

If it is determined that there is an input through this operation, the number of input characters is counted in step 4B, and it is determined whether it is within a predetermined limit frame. If it is determined that the limit frame has been exceeded, the cursor position is returned by one position using the cursor control 4CK, and the process proceeds to step 4.
Return AK operation. All characters input outside the frame are discarded by the discard section 2.

If it is determined that the input signal is within the limit frame, a determination operation is performed in step 4D to determine whether the input signal is the <CR> key. Here, if it is determined that the key is pressed, the operation consisting of steps 4E to 4G is started. If it is not the CR> key, return to step 4AK operation.

When the <CR> key manual signal is transmitted from the keyboard 1, the input characters transmitted up to the <CR> key are subjected to step 4E by the character determining means 42. Step 4
Character type determination operation is performed at E and 4F. If it is determined in this operation that the character type is a prespecified character type, step 4G is executed and the input data is displayed on the screen of C-T3.

Here, if it is determined that the character types do not match, the input data is discarded by the discard section 2, the input data is not displayed, the cursor is returned to the original state, and the state of waiting for input is resumed. Step 4AK operation is performed. return.

In the above embodiment, the input restriction is indicated by moving the cursor position back one position, but it may also be indicated by a sound.

Furthermore, the input character color may be changed on the screen to indicate that the maximum input character has been reached, and furthermore, when the limit is exceeded, all input characters may be erased and the cursor may be automatically returned to its original position.

〔Effect of the invention〕

As described above, according to the present invention, when the number of input characters exceeds the limit frame, the limit frame determining means controls the input from the keyboard so that when the number of input characters exceeds the limit frame, a display to that effect is displayed and the portion exceeding the limit frame is discarded, When the t+<CR> key is pressed, the character determining means determines whether the character signal sent from the restriction frame determining means is correct or not, and if the character types do not match, it is controlled to be discarded, and when they match. Since K controls the display on the CRT, interactive processing is facilitated.
This has the effect of providing a system that is easy for users to use.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a keyboard input control device according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the input control device shown in FIG. 1, and FIG. 3 is a conventional keyboard input control device. FIG. 2 is a block diagram showing a control device. 1 is a keyboard, 3 is a CRT", 4 is a character type determination means,
41 is a limit frame determining means, and 42 is a character determining means. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation Agent Patent attorney 1) Hiroshi Sawa 1 (2 others) Figure 2

Claims (1)

[Claims] Character type determination means determines characters input from a keyboard, and displays the character type on a visual display device when character types are determined to match. The means includes a limit frame determining means for determining the number of input characters, displaying a display to that effect when a character signal is input exceeding the limit frame, and discarding character signals outside the limit frame, and a carriage of the keyboard. - Determine whether the character type of the character signal within the limit frame outputted from the limit frame determining means when the return key is pressed is correct, and if it is determined that the character types match, output to the visual display device. 1. A keyboard input control device comprising: a character determining means for discarding characters when it is determined that they do not match.