JPS61151595A - Electronic appliance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic device in which an input position is designated by a cursor displayed on a display device.

[Conventional technology]

Currently, screen editors are often used in word processors and personal computers. The screen editor displays input data on a display device such as a CRT display, and uses the display to make corrections, insert sentences, etc. The above-mentioned editor uses a cursor to indicate the position in order to input or delete data. These cursors are moved up and down or left and right by cursor movement keys provided on the input device, that is, the keyboard section.

Conventionally, when the cursor is moved in the vertical direction using the aforementioned cursor movement keys, a method is often used in which the cursor is moved to the same position (same number from the beginning) on the upper or lower line, or to the position next to the last character on that line. It is being In these methods, when the cursor is positioned toward the end of a line,5 for example, when moving to a short line above, the cursor specifies a blank position.

This is not a problem if the entire line can be displayed and furthermore, all of multiple lines can be displayed. If the display device is small, such as a portable type, the previously input data will not be displayed, but the blank space before and after the cursor will be displayed, resulting in the entire display being blank.
This has the problem that it becomes difficult to know which data position the cursor is located at.

On the other hand, the way to solve this is to hover over the cursor.

When moving downward, there is a method of positioning it at the beginning of the line. Although this method does not display the blank space at the end of the line as described above,9For example, when there is only a few characters of data in the center of one line, such as a title, 1 A specific number of characters from the beginning of a line are blanks (spaces), and as mentioned above, when only a small display section is provided, there is a problem in that blanks are displayed, that is, nothing is displayed.

[Purpose of the invention]

The present invention is intended to solve the above-mentioned problems, and its purpose is to always move the cursor in the vertical direction if at least one character data, etc. is stored in one line. To provide an electronic device with excellent operability by displaying characters starting from the first display character and further displaying a cursor at the beginning.

[Structure of the invention]

The present invention is characterized by: a storage means for storing data; a display means for displaying the data stored in the storage means; a cursor key for detecting data stored in the storage means, a non-display data detection means for detecting data other than display from data stored in the storage means, and a control means, the control means for detecting data from the current input position using the cursor key. Or when changing the input position to the line below.

The electronic device according to claim 1, characterized in that display data following the first data in the upper or lower row is controlled to be displayed on the display section.

[For production]

When the cursor is moved upward or downward using the cursor keys, under the control of the control means, the non-display data detection means detects the first data of the line and also detects the first displayable character data of the line. Display the character data following the character data on the display device.

[Embodiments of the invention]

FIG. 1 is a circuit diagram of a word processor 7 according to an embodiment of the present invention.

When an operator operates a keyboard 1 consisting of character keys 1-1 necessary for creating documents such as characters and cursor movement keys 1-2 for moving a cursor, code data corresponding to the operated keys is stored in a processor (CPU) 2. join. The processor (CPU) 2, as shown in FIG.
2. Cursor address register 2-31 character buffer 2
-4° control section 2-5. It has a calculation section 2-6, and a control section 2-6.
5 is a random access memory 3.5 connected via a path line. Print buffer 4. Read only memory 6,
It controls the display buffer 7, and controls display, printing, and input from the keyboard 1-1, which will be described later.

For example, when a print designation code is added, the data stored in the random access memory 3 is sequentially read in code data units and one line of data is stored in the print buffer 4. Then, the printing section 5 connected to the print buffer 4 prints one line at a time. In addition, the processor (CPU
)2 stores character code data added from the keyboard 1 in the random access memory 3. Furthermore, in order to display the line currently being input, the contents of the random access memory 3 are stored in the display buffer 17. A display control circuit 8 to which the output of the display buffer is added converts the code data of the display buffer 7 into data to be displayed on the display section, and outputs the data to the second display section 9 for display. A cursor control signal is directly applied to the display control circuit 8 from the processor 2, and a cursor is displayed at a position designated by the processor 2 on the display section described above.

On the other hand, the cursor is moved up and down using the cursor movement keys. In the embodiment of the present invention, the display section 9 displays one line, and can display, for example, 10 characters in one line. In such a display section 9, when the cursor is moved in the vertical direction, data to be displayed must be selected from the random access memory 3 depending on the display position of the cursor.

FIG. 2 is a flow chart of the operation of the processor 2 in moving the cursor in the vertical direction. When the cursor up/down movement signal, that is, the top or bottom key of the cursor movement key is pressed, the cursor address is updated (processing S
Perform l). The cursor address is an address value stored in the cursor address register 2-3, and indicates an address within the random access memory 3.

When a character key or the like is pressed in this manner, the character code data is stored in the corresponding position in the random access memory specified by the cursor address. Since code data is stored in the random access memory 3 in line order and character order, updating also means moving one character at a time in the direction of the previous address position when moving upward. When moving downward, it means moving one character at a time in the direction after the address. The code data stored in the random access memory (RAM) 3 specified by the cursor address updated by the process S1 of updating the cursor address is read, and the code data is
CR) (processing S2). If it is not a carriage return (CR) (NO), the process is updated again and processing S1 is performed, and the above-described operations are sequentially repeated until a carriage return is detected. When the first carriage return in one line is detected (YES) by these processes Sl and S2, the flag register F in the processor 2 is incremented (process 53) L, although it is not displayed.

It is determined whether the result is "2" (processing S4). Flag register F is “0” in the initial state, so F
becomes "1". At this time, the determination S4 becomes NO and processing SL and S2 are repeated again. When the second carriage return is detected in the process of sequential processing S1 and S2, the flag register is incremented again ( Processing 53)L
, determines whether the value is 2" or not. Since it is F-2 after the second carriage return is detected, this determination is YES, and the - cursor address is transferred to the process S1 described above.
A reverse walking process S5 is performed in which the driver moves in the opposite direction to the update.

In the embodiment of the present invention shown in FIG. 1, there is always a carriage return at the end of one line, so when the cursor moves upward, for example, the second carriage return from the line that was displayed before the cursor moves. Detects line carriage return and steps backwards.

Therefore, upon completion of the process S5, the cursor address points to the first position one line above in the random access memory 3.

Then, it is determined whether the content of the located random access memo 173 is a space (SP) (processing S
6) Do. A space means a blank space for one character. In the embodiment of the present invention, 10 characters are sequentially displayed on the display section 9 starting from the first character code of the line to be displayed, and for this purpose, the cursor address is advanced backwards (process 35) and the cursor address is indicated by it. It is determined whether the content of the random access memory 3 is a space (process 56) L, and this operation is sequentially repeated until a character code is detected.

If No, it is not a space, it is assumed that the data is display data, and the data corresponding to the display digit setting data, for example, 10 characters, is read from the random access memory and transferred to one display buffer from the position indicated by the current cursor address. Then, the cursor signal is turned on (process 58) L, and the cursor and characters are displayed on the display section 9.

The flag register F is then cleared (processing S9), and the cursor movement processing ends. The cursor is displayed on the display section 9 at the position indicated by 1 in the cursor display position register, but that position becomes the top of the display section 9 by the above-described operation. This setting is also performed in the cursor signal on process S8 described above. FIG. 3(a) is a diagram of the character structure of each line, and FIG. 3(b) is a diagram of the display when the data is displayed on the display section 9.

This shows when the cursor was pointing to the last character "1" on the third line and the cursor was moved sequentially upward or downward. In the upward direction, the first character is "2", so by moving the cursor in the upward direction once, for example 1
Display 0 characters.

Then, when moving further upward, since the first code data is a space, 10 characters are displayed starting from the character code data "3" following the space.

In the downward direction, as in the upward direction, the first code data in the first cursor movement is a space, so the 9th character "A" is displayed. When moving further downward, the first code data is B'', so 10 characters from "B" are displayed.

In FIG. 3, there is only a space for the first character, so one display starts from the next character.

If multiple spaces exist, the characters after those spaces will be displayed.

〔Effect of the invention〕

As described above, the present invention provides 9 code data (character code data) that can be displayed in response to the vertical movement of the cursor.
Since the number of characters displayed is smaller than that of the cursor key, even on a small display section where each display section has one line and 10 characters, efficient display can be achieved with fewer cursor key operations. Furthermore, even when there are few characters in one line, characters that should be displayed are displayed starting from nine characters, so even if the cursor is moved up or down, it becomes clear whether the cursor points to the character position stored in the memory. Therefore, according to the present invention, it is possible to provide an electronic device with excellent operability even if it can only display a small display area.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment of the present invention. FIG. 2 is a flowchart of the operation of the processor in moving the cursor in the vertical direction. Fig. 3(a) shows a character composition diagram, and Fig. 3(a) shows a display diagram. 1...Keyboard, 2...Process 3...
・Random access memo 1 huff...display buffer, 8...display control circuit, 9...display section.

Claims (1)

[Scope of Claims] 1) A storage means for storing data, a display means for displaying the data stored in the storage means, and a cursor that indicates a data input position to the data storage means on the display section. It has a cursor key, non-display data detection means for detecting data other than display from the data stored in the storage means, and control means, and the control means is configured to detect data from the current input position upward or downward by using the cursor key. The electronic device according to claim 1, wherein when the input position to the lower row is changed, control is performed to display display data following the first data of the upper or lower row on the display section. device. 2) The electronic device according to claim 1, wherein the non-display data detection means detects a space code, a tab code, or a carriage return code of data. 3) The electronic device according to claim 2, wherein the control means sets the data following the carriage return code detected by the non-display data detection means as the first data of the line. 4) The control means sequentially detects whether the first data is display data using a non-display data detection means, and displays a specific number of data following the first display data on the display means. An electronic device according to claim 3.