JPH06332662A - Display device - Google Patents

Abstract

PURPOSE:To provide the display device which can display all inputted data, even if a display area is narrow and small. CONSTITUTION:Whether a cursor reaches the right end on a liquid crystal screen or not is discriminated (S6), and in the case where it does not reach the right end, a display processing is executed (S8). However, in the case, for instance, where the maximum number of display characters is six characters, and five characters are displayed already and a cursor exists at the right end, a cursor 13 is erased (S7), and thereafter, the display processing is executed (S8). By doing this on the liquid crystal screen, a character-string is displayed with six characters. Also, in the case where the number of input characters becomes A (the maximum number of display characters on the liquid crystal screen), the character-string displayed on the liquid crystal screen is scrolled in the direction to the left by a one-character portion (S11). Thereafter, the display processing is executed proceeding from S5 to S8, and the character inputted next time is displayed an area of the right end in which a space is formed by the scroll.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying a plurality of character data in a predetermined display area.

[0002]

2. Description of the Related Art As a conventional display device, a display device which performs the display control shown in FIG. 5 is known. That is, this example is a display device provided in a Chinese label writer and has a liquid crystal screen 30. This Chinese label writer can select one of three modes of Mandarin, Cantonese, and Zhongyi, and the LCD screen 30 displays only maximum 6 half-width characters in each mode in order to reduce the cost. It has a relatively narrow display area.

On the initial screen, the cursor 31 is located at the left end of the liquid crystal screen 30, and when a character is input by a key operation, the cursor 31 moves right by one character, and the cursor 31 is moved to the original position. The character entered at the position is displayed. Therefore, “C” → “H” → “A” → “A” →
When the key operation of "N" is performed, as shown in (1) of the figure, five characters of "CHAAN" are displayed in the upper part of the text area 32, and the cursor 31 moves to the right end.

[0004]

However, in such a conventional display device, as shown in (1), when five half-width characters are input, the cursor 31 moves to the right end, and the cursor is further moved. It becomes a state where 31 cannot move. Therefore, even if a key operation is performed in this state and "F" is input, the cursor 31 cannot move. As a result, the input character "F" is displayed on the liquid crystal display screen 30.
It could not be displayed above, and the operability as a label writer was impaired.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a display device capable of displaying all inputted data even if the display area is small. It is what

[0006]

In order to solve the above problems, according to the present invention, an input means for inputting data, a display means for sequentially displaying the data input by the input means, and the display means In next data area display means for indicating the display area of the next data, comparison means for comparing the maximum display data number that can be displayed on the display means with the input data number input by the input means, and the comparison means Based on the comparison result, when the input data number reaches the maximum display data number, the next data area display means is erased,
First display control means for displaying the data input by the input means in the display area, and a state in which the maximum display data number of data is displayed on the display means,
When the data is input from the input unit, the second display control unit that scrolls the currently displayed data to display the input data.

[0007]

The data input by the input means is sequentially displayed on the display means in the area indicated by the next data area display means. Then, when the same number of data as the maximum number of display data that can be displayed on the display means is input, the first display control means operates at this point to erase the next data area display means to replace the display area. Display the data entered in.

When data is continuously input from the input means in this state, the second display control means operates to scroll the currently displayed data, that is, the data displayed with the maximum number of display data, Then, enter the data that was entered. Therefore, when more than the maximum display data number is input by the input means, the newly displayed data is displayed while the currently displayed data is moved by scrolling.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. That is, FIG. 1 is a functional block diagram showing the overall configuration of the Chinese label writer according to the present embodiment. The control unit 1 controls the entire Chinese label writer, and includes a CPU, a program ROM, and a work RAM. Etc. The character font ROM 2 stores character data corresponding to a key provided in a key input section described later, and the print data RAM 3 stores print data input by key operation. The printing unit 4 is composed of a head necessary for printing on the label, a driver circuit for driving the head, and the like, and prints on the label according to the print data read from the print data RAM 3 by the control operation of the control unit 1. To execute.

The control unit 1 also controls the display unit 6 based on the data input from the key input unit 5 and the character data stored in the character font ROM 2. As shown in FIG. 2, the display section 6 is composed of a liquid crystal screen 12 arranged at the upper end of the label writer body 7. The key input unit 5 is a mode selection key 8, an ON key 9, an OFF key 10 for selecting Mandarin, Cantonese, and Bhutan on the upper surface of the label writer body, a numeric input key, and an alphabet key. , Function keys etc. key group 1
It is composed of 1.

In the present embodiment having the above-mentioned structure, the control unit 1 operates according to the operation of the ON key 10 according to the flow chart shown in FIG. It is determined whether any one of the word and the note is selected (S1). If Mandarin is selected, the number of half-width characters is set to "7" in register A (S2), and if the pronunciation is selected, the number of full-width characters is set to "4" (S3). When Cantonese is selected, the full-width character number "6" is set in the register A (S4).

Thereafter, key input processing is executed (S
5) Based on the data input by operating the key input unit 5, the character data is read out from the character font ROM 2. Subsequently, it is determined whether or not the cursor 13 shown in FIG. 4 has reached the right end of the liquid crystal screen 12 (S
6) If the right end has not been reached, display processing is executed (S8).

This display processing is the operation shown in FIG. 4, and in the initial state before operating the alphabet keys or the like in the key input section 5, the cursor 13 is located at the left end of the liquid crystal screen 12, and this state is set. Key to operate "C"
When is input, the cursor 13 is moved to the right by one character as shown in (1) of the figure, and the input character "C" is displayed at the original position where the cursor 31 was. Therefore, when the keys are operated in the order of “C” → “H” → “U” → “A” → “N”, as shown in (2) of FIG.
Five characters “N” are displayed, and the cursor 31 moves to the right end. Next, it is determined whether the number of input characters has reached the value of the register A, that is, has reached the maximum number of display characters in the mode (S9). At this time, assuming that the Cantonese mode is set, since A = 6, the number of input characters is "5" in the state (2) of FIG. 4 at present, so the determination in S9 is NO. , S5 and subsequent steps are executed.

When the process proceeds from S5 to S6 and the determination of S6 is made, the determination is YES because the cursor 13 is at the right end of the liquid crystal screen 12, the cursor 13 is erased (S7), and then displayed. The process is executed (S8).
Therefore, if five characters "CHUAN" are input and then "G" is input in this state, the cursor 13 is erased as shown in (3) of FIG.
“G” is displayed in the rightmost area where 3 was present. As a result, "CHUANG" consisting of 6 characters, which is the maximum number of characters displayed, is displayed on the liquid crystal screen.

When 6 characters are input in this way, S
The determination of 9 is YES, and the process proceeds to S10 to determine whether or not the maximum number of input characters in each mode has been reached. Here, the maximum number of input characters in each mode is the maximum number of characters that can be printed on the label in each mode, and is the RO for the program in advance.
It is stored in M. If the maximum number of input characters has not been reached, the character string displayed on the liquid crystal screen 12 is scrolled leftward by one character (S1).
1). Therefore, by the processing of S11, "CHUAN
The character string consisting of "G" moves rightward by one character, "C" at the left end is erased, and a space of one character sentence is formed at the right end.

After that, the process from S5 is repeated, but since the cursor 13 does not exist at this time, the process proceeds from S5 to S8 to execute the display process. At this time, if the number "2" is input by the key operation, "2" is displayed in the rightmost area where a space is formed by the scroll in S11 described above, and as a result, it is shown in (4) of FIG. As described above, the character string “HUANG2” is displayed on the liquid crystal screen 12.

That is, when the number of input characters is A or more, S5 → S8 until the determination in S10 becomes YES.
The loop of → S9 → S10 → S11 → S5 is repeated. As a result, each time one loop is executed, the six characters displayed on the LCD screen are scrolled one character to the left, and the character entered next is displayed in the space at the right end formed by this. It Therefore, in order to reduce costs, the label writer body 7 has a narrow liquid crystal screen 12
Even in the case where is provided, all the input characters can be visually recognized without any trouble. When the maximum number of input characters in the mode is input, the determination in S10 is Y.
This becomes ES and this control is terminated.

[0018]

As described above, according to the present invention, when the number of input data reaches the maximum number of display data, the next data area display means showing the display area of the next data is erased to display the input data. Then, when the next data is input while the maximum display data number is being displayed, the data is scroll-displayed. Therefore, even if more than the maximum number of display data is input, all the data can be displayed.Therefore, even if a small display area is provided for cost reduction, the input data will not be disturbed. You can see everything without.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an external plan view of the embodiment.

FIG. 3 is an operation flowchart of the same embodiment.

FIG. 4 is a diagram showing a display operation of the embodiment.

FIG. 5 is a diagram showing a conventional display operation.

[Explanation of symbols]

 1 Control part 5 Key input part 6 Display part 12 Liquid crystal screen 13 Cursor

Claims (1)

[Claims] 1. Input means for inputting data, display means for sequentially displaying data input by the input means, next data area display means for indicating a display area of the next data on the display means, and the display. Comparing means for comparing the maximum display data number that can be displayed on the means with the input data number input by the input means, and based on the comparison result of the comparing means, the input data number becomes the maximum display data number. At this time, the first display control means for erasing the next data area display means and displaying the data input by the input means in the display area, and the maximum display data number data are displayed on the display means. A second table for displaying the input data by scrolling the data currently displayed when the data is input from the input means in the state of being Display device characterized by comprising a control means.