JPS6128148A - Text data storage device - Google Patents

Abstract

PURPOSE:To attain editing processing in a short time by rewriting only the order of a pointer in data insertion and adding data to delete only the corresponding pointer in case of data deletion. CONSTITUTION:In inserting data C between data A and B, a poiner PC of the inserted data C inputted from a keyboard 4 is set to a register 2-1 in a processor 2. On the other hand, the data C is written at the last of data on a memory 2-2. The pointer PC is written between pointers PA, PB in the memory 2-2 and edited content is displayed on a display device 4. In deleting the data B between the data A and H, the pointer PB in the memory 2-2 is set to the register 2-1. Succeedingly, a pointer PH is written at the location of the pointer PB in the memory 2-2 and the content of edition is displayed on the device 4.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention includes a data processing device and an auxiliary storage device,
Edit and edit text data (hereinafter simply referred to as data)
The present invention relates to a text data storage device for storing text data.

(Prior Art) Conventionally, in the access method of this type of text data storage device, a pointer serving as read order information is added to the end of each data, and the data is accessed from the first data to the second data in 7H4. It had a chain structure that was read out.

(Problem to be Solved by the Invention) Therefore, when there is an insertion or deletion during data editing, all the contents of the pointers before and after the inserted or deleted part must be rewritten, and the editing process takes time. was there.

(Means for solving the problem) The present invention provides a text area and a text index area in the auxiliary storage device in advance, and when storing data in the auxiliary storage device, only the data is stored in the text area.
Only data storage address information (hereinafter referred to as pointers) is stored in the text index area, and after the editing process by inserting or deleting data is completed, the pointers are rearranged in memory according to the editing results, and the result is is written in the text index area in the auxiliary storage device, and the data inserted at the end of the data already recorded in the text area is sequentially added.

That is, according to the present invention, when data is stored and edited in a disk device connected to a data processing device as an auxiliary storage device, data having meaning as text is sequentially stored in a text area, and the pointer of the data is The text is stored in the text index area in the order that it originally has meaning, and the pointer of the text index area is transferred from the disk device to the data processing device before editing the data. When data is inserted, the new data is stored in the data storage area next to the text area of the disk device, and the corresponding pointer is positioned at the corresponding position in the data pointer information in the data processing device. When the data is deleted, the data pointers in the corresponding data processing device are deleted to maintain the order of the data, and when the editing process is completed, the data pointers in the data processing device are all deleted from the disk device. A text data storage device is obtained for restoring the data in the text index area of the text index area.

(Embodiments of the Invention) Next, the present invention will be described in detail with reference to drawings showing one embodiment of the present invention.

In FIG. 1, in order to store data in an auxiliary storage device 1 (for example, a magnetic disk device), an area in the auxiliary storage device 1 is automatically filled with a text editing program.
A text index area 1-1 and a text area 1-2 of arbitrary sizes are respectively secured. When data is input from the keyboard 4, the data is displayed on the display device 3, and is temporarily stored in the memory 2-2 in the processing device 2, where the correspondence between the pointer and the data is processed. At that edge, a pointer to the data is sequentially stored in the text index area 1-1 in the auxiliary storage device 1, and the data is sequentially stored in the text area 1-2.

When editing data (for example, inserting or deleting data), first, a pointer is read from the text index area 1-1 to the register 2-1, and the data in the text area 1-2 specified by the pointer is read out. is accessed and stored in the memory 2-2 and displayed on the display device 3.

FIG. 2 is a diagram illustrating the case of inserting data. An example is shown in which data A, data B, and data H already recorded in the auxiliary storage device 1 are deleted, and new data Ct- is to be inserted between data A and data B. PA, FB and Plf shown in FIG. 2 are data A and data B.

and a pointer indicating the storage address of data 11.

That is, when inserting data, only the order of pointers is rewritten, and data C is simply added.

FIG. 3 shows the entire diagram when deleting data. An example will be shown in which data Bf is deleted from data A, data B, and data H that have already been recorded. PA, PE and PH shown in FIG. 3 are pointers indicating the storage addresses of data A, data B and data H. That is, when deleting data, only the corresponding pointer is deleted, and data B remains in its original size in the text area.

FIG. 4 shows an example of the structure of a pointer. The sector address of the auxiliary storage device 1 where data is stored is written in the text storage address 41, the start address of the data (for example, the data start position within the sector) is written in the text start position 42, and the text Long 4
3, the length of one data (for example, 80 bytes) is written.

Next, the operation of the data storage device configured as described above will be explained in detail with reference to FIGS. 1 and 5. When creating new text, data is input from the keyboard 4 while looking at the display device 3 (step 65). The input data is temporarily stored in the memory 2-2 in the processing device 2 (step 66). At this time, the processing device 2 executes the index search of the pointer for each data, and the display is also displayed on W3 (step 67). Input buffer ~
When it becomes full, the tita pointer stored in the memory 2-2 is stored in the text index area 1-1 in the auxiliary storage device 1.
The data is also written into the respective text areas 1-2 of the device (step 68→step 69→step 7o). If the input buffer is not full, continue from step 65 to step 67 until the input buffer is full.
1 is repeated. Further, these series of operations (steps 65 to 70) are repeated until the operator's input processing is completed. (Step 71).

Next, the data ′ already stored in the auxiliary storage device l
fr: The operation when editing (for example, inserting or deleting) will be explained (step 52).

When the operator inputs the insert mode or the delete mode from the keyboard 4, the data in the auxiliary storage device 1 is sequentially read from the beginning to the memory 2-2 by the processing device 2 (step 53). This reading is performed by first reading the pointer of the text index area 1-1 into the memory 2-2, and reading the corresponding data from the text area 1-2 while indexing the read pointer. 1
The amount of data read in - times is equal to the capacity of the input buffer. The pointer and data read in step 53 are developed on the memory 2-2, and the contents are displayed on the display device 3 (step 54).

Next, the operation when data C is inserted between data A and data B in the insertion mode will be described with reference to FIGS. 1, 2, and 5. The pointer PC of the insertion data C input from the keyboard 4 is set in the register 2-1 in the processing device 2 (step 55 → step 57).
. On the other hand, data C of insertion data C is written after data H (step 58). Next, memory 2-2
Pointer PC is written next to pointer PA at , and the storage addresses of pointer PE, pointer PH, and each subsequent pointer are incremented by 1 (step 59). The edited content is displayed on the display device 4 (step 60).

Next, with reference to FIGS. 1, 3, and 5, the operation when deleting data B between data A and data H in the deletion mode will be described.

When the deletion mode is designated, pointer PB in memory 2-2 is set in register 2-1 (step 56).
). Subsequently, pointer P)( is written to the position of pointer PI3 on the memory 2-2, the storage address of each pointer after pointer PH is decremented by 1 (step 59), and the edited content is displayed on the display device 4. (Step 60).Meanwhile,
Data B is not deleted and remains written in text area 1-2.

In each of the above modes, the data inserted or deleted by the operator is once stored in the input buffer in J order, and when the buffer becomes full, it is stored in the auxiliary storage device 1 via the processing device 2 (step 61). At the time of storage, the pointer in the memory 2-2 is stored in the text index area ]-1, and the data is stored in the text area]-2 (step 62→step 63). The above series of operations (steps 53 to 63) are repeated until the operator completes the editing process (step 64).
.

(Effects of the Invention) As explained above, the present invention allows editing to be performed in a short time when editing data in an auxiliary storage device connected to a data processing device, and also allows data to be edited in accordance with the amount of data. Since the size of the storage area can be changed freely,
It has the effect of improving data access.

[Brief explanation of drawings]

Figure 1 is a block diagram of an embodiment of the present invention, Figures 3 and 3 are configuration diagrams of a text index area, and Figure 4 is a block diagram of an embodiment of the present invention.
FIG. 5 is a 70-yard diagram showing the operation of one embodiment of the present invention. 1 Auxiliary storage device, 1-1... Text search area, 1-2 Text area, 2... Processing device 2-1...
・・Register, 2-2 ・・Memory, 3-Display device,
4 Keyboard, 41...Text storage address, 42
...Text start position, 43...Text length. The third figure is the moon stomach, the rod l figure toze) data C phantom introduction tea 2 times] 2 theta 8 so shaving the 3rd figure $ 4 flash

Claims (1)

[Claims] an external storage means having a text area for sequentially storing portions of data having meaning as text and a text index area for storing storage address information of the text data arranged in the original text order; The text data storage address information of the text index area is taken in in advance, and when new text data is inserted between the text data, the new text data is stored in the next text data storage address of the text area. and data processing means for locating the storage address information at a corresponding position in the text index area, and deleting only the corresponding text data storage address information in the text index area when certain text data is deleted. A text data storage device characterized by: