JPH0719250B2 - Japanese word processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a small-sized Japanese word processor equipped with a display device having a small number of digits for displaying sentences.

<Prior Art> In a Japanese word processor equipped with a display device having a small number of display digits for the purpose of low cost and simple configuration, only a small part of a sentence at the time of input is displayed. For this reason,
When creating or editing a text, it becomes necessary to check the text hidden from the display, but conventionally, the character string to be checked was displayed by moving the cursor.

<Problems to be Solved by the Invention> As described above, since the hidden text from the current display is displayed by moving the cursor, the operation is complicated.

<Means for Solving Problems> The present invention, in a Japanese word processor provided with a display device having a displayable digit number smaller than the number of characters of one line formed in a text memory, corresponds to the displayable digit number. And a display buffer for temporarily storing a character string in a predetermined digit number range from the text memory, and a left display shift key and a right display shift key for moving the display character string in units of the predetermined digit number. An input device, and a control device for controlling the sentence memory, the display buffer and the display device by input from the input device, when the left or right display transition key is operated by the control device, If there is a character string with a specified number of digits adjacent to the left or right side of the character string with the specified number of digits currently being displayed, write the character string to the display buffer and write the character with the specified number of digits currently displayed. If there is no character string of a predetermined number of digits adjacent to the left or right side of the column, write a character string of a predetermined number of digits from the left end or the right end to the display buffer so as to include the character string currently displayed. It is characterized in that the display device is switched and displayed.

<Embodiment> FIG. 1 shows the basic configuration of the Japanese word processor of this embodiment. The input device K is a key group K1 for inputting character strings.
And a left display shift key a, a right display shift key b, an upper display shift key c, and a lower display shift key d. The display device D is a liquid crystal display device having a small number of display digits, for example, eight digits. Sentence memory BMR
Stores the character string input by the input device K. From the character strings registered in the text memory BMR, the character string corresponding to the 8-digit display digit of the display device D is extracted in the display buffer DBF. The character string extracted in the display buffer DBF is displayed on the display device D. The output device P is, for example, a thermal transfer printer that prints an input sentence. The central processing unit CPU controls the display device D, the text memory BMR, the display buffer DBF and the output device P according to the input information from the input device K.

Now, a character string as shown in FIG. 2 is registered in the text memory BMR, the cursor is located in the block P consisting of an 8-digit character string, the contents of the block P are in the display buffer DBF, and the display device D It is assumed that the contents of the block P are displayed in. In this state, for example, when the left side display shift key a of the input device K is pressed, the block L consisting of the 8-digit character string on the left side of the block P in the drawing in the sentence memory BMR is formed.
Is specified, the contents of this block L are extracted from the text memory BMR and set in the display buffer DBF, and the contents of the block P currently displayed on the display device D are replaced with the 8-digit character string of this block L. Is displayed. Then, for example, after a certain time has elapsed since the left side display shift key a was pressed, the contents of the block P are set again in the display buffer DBF, and the display device D returns to the original display of the block P.

FIG. 3 shows a state in which the display of the display device D is switched by operating each of the display shift keys a, b, c, d. When the content of the block P of the text memory BMR is displayed, When the upper display shift key c is pressed, the 8-digit character string of the block U on the upper side in FIG. 2 of the block P of the sentence memory BMR, that is, the opposite block U of the previous line is displayed, and the lower display shift key is used. When the key d is pressed, the block D below the block P, that is, the 8-digit character string of the opposite block D on the next line is displayed, and when the right side display shift key b is pressed, the block on the right side of the block P is displayed. An 8-digit character string of R is displayed.

On the other hand, if the content currently displayed on the display device D is the 8-digit character string of the block P'of the text memory BMR shown in FIG. 4, the first character of this block P'is left in the figure of the text memory BMR. Since it is the 6th digit from, the last 3 digits of the 8-digit character string of the block L'on the left side of the block P'is the block P '.
It becomes common with the first 3 digits of. Therefore, when the left side display shift key a is pressed, the contents of the block L'where the last three digits are the same character string as the first three digits of the block P'are displayed. FIG. 5 shows how the display of the display device D is switched by operating the display transition keys a, b, c, d when the current display content is the block P '.

The flowchart of FIG. 6 shows the above-described processing procedure when the current display content is the block P of the text memory BMR.

<Effect> As described above, in the present invention, a character string having a predetermined number of digits on the left side, the right side, the upper side, or the lower side of the currently displayed character string is designated, and the designated character string is changed. In addition to displaying the currently displayed character string and displaying the key input character string on the display device in real time, the character string of the specified number of digits currently being displayed can be displayed on the same line. If there is no character string with a specified number of digits on the left or right side, the character string with the specified number of digits is extracted from the left or right end including the character string currently being displayed, and is displayed on the display device. In a Japanese word processor equipped with a display device with a small number of display digits, the connection of sentences can be checked smoothly and extremely quickly when creating or editing sentences, and the display switching control means is simple and simplified. Therefore, the advantage of this type of word processor that it is extremely low price can be maintained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the basic configuration of the embodiment of the present invention, FIGS. 2 and 4 are diagrams showing the contents of a text memory of the embodiment of the present invention, and FIGS. 3 and 5 are of the embodiment of the present invention. FIG. 6 is a diagram showing how the display of the display device is switched, and FIG. 6 is a flowchart showing the processing procedure of the embodiment of the present invention. D ... Display device, CPU ... Central processing unit BMR ... Sentence memory, DBF ... Display buffer a, b, c, d ... Left, right, upper and lower display transition keys

Claims (1)

[Claims] 1. A Japanese word processor equipped with a display device having a displayable number of digits smaller than the number of characters of one line formed in the text memory, wherein a predetermined number of digits from the text memory is provided in correspondence with the displayable number of digits. A display buffer for temporarily storing a range of character strings, an input device including a left display transition key and a right display transition key for moving the display character string in units of the predetermined number of digits, and an input device from the input device. A text memory, a display buffer and a control device for controlling the display device by input, and when the left or right display transition key is operated by the control device, a predetermined number of characters currently displayed If a character string with a specified number of digits exists adjacent to the left or right side of the column, the character string is written to the display buffer and adjacent to the left or right side of the character string with the specified number of digits currently being displayed. If a character string of a predetermined number of digits does not exist, write a character string of a predetermined number of digits from the left end or the right end to the display buffer so as to include the character string currently displayed and switch the display device to display. Japanese word processor featuring.