JPS6320676A - Word processor - Google Patents

Abstract

PURPOSE:To effectively use a memory device by releasing a range designated data preservation region into a document region if the remaining capacity of the document area where document data is stored is smaller than a prescribed value. CONSTITUTION:The optional range of document data generated in the memory device can be designated, and the latest range designated document data is stored in a prescribed range designated data preservation region. For example, when the range of document data is designated and document data in this range is deleted, moved to another position, or copied, document data in the range as the operation object is preserved. Document data stored in the range designated data preservation area can be restored to the optional position of document data developed in the document area. Though the memory device is provided with the document region and the range designated data preservation region, the range designated data preservation region is released as the document region if the remaining capacity where document data can be generated in the document region is smaller.

Description

[Detailed description of the invention] [Industrial application field]

TECHNICAL FIELD The present invention relates to a word processor in which the capacity of documents that can be stored in an internal storage device is expanded.

[Prior art]

Conventionally, a document creation device called a word processor for Japanese or European languages, etc., inputs the corresponding character symbol code and control code by pressing keys on the keyboard, and then processes the documents according to certain rules based on the input code. ,
Processing such as code conversion and spell checking is performed, the document data is displayed on the display device, the created document data is sequentially stored in the storage device, and the stored document data is edited for printing and then printed on paper. This is a device designed for printing. Such devices have been studied mainly from the viewpoints of operability, functionality, portability, and price, and many models having each of these characteristics have been developed.

[Problems to be solved by the invention]

By the way, document data during document creation, update, etc.
In order to improve processing speed, it is common for the central processing unit (hereinafter referred to as rcpUJ) to expand all document data into an internal storage bag made up of directly accessible random access memory (hereinafter referred to as rRAMJ). . Therefore, the capacity of one document that can be created is determined by the RAM capacity. The larger the document capacity that can be created, the more desirable it is from the viewpoint of functionality, but if the RAM capacity is increased, the price of the entire device will naturally increase, and the device will become larger and less portable. be. Therefore, in order to meet the demands for affordability and portability, the RAM capacity must be limited to the minimum necessary. Also, regarding a fixed capacity RAM, as other functions are added, the RAM is used as a temporary storage device to implement those functions, so the storage area for document data is reduced. If the storage area for document data is small, a double layer will occur in the sentences created at one time, and documents that exceed the capacity will have to be created in separate parts, which will affect operability and functionality. Due to these circumstances, in order to meet the above request, it is necessary to
It is important to make effective use of M.

[Purpose of the invention] The present invention was aimed at solving the above problems, and its purpose is to effectively utilize the memory W of a word processor in order to increase the capacity of documents that can be created. That's true. [Means to solve the problem]

The structure of the invention to solve the above problems includes a keyboard for inputting character symbol codes and control codes, a display surface for displaying character symbol data, and creating document data by processing input character symbol codes. In a word processor comprising a processing device for displaying on the display screen and a storage device having a document area for storing document data created by the processing device, the storage device stores the latest range of document data. a range-designated data storage area for storing document data that can be stored in the document area; The present invention further includes a storage area control unit that releases the range specified data storage area as the document area when the capacity becomes less than a predetermined amount.

[Effect]

In this word processor, any range can be specified in the document data created in the storage device. Then, the document data whose range has been specified most recently is stored in a predetermined range specification data storage area. For example, if you specify a range of document data and then delete that range of document data, move it to another position, copy it, etc.
The document data within the scope of the operation is saved. Further, the document data stored in the range specified data storage area can be restored to any position of the document data developed in the document area. In this way, the storage device has
There is a document area and a range specified data storage area, but when the remaining capacity of document data that can be created in the document area decreases,
The range specification data storage area described above is released as a document area.

【Example】

The present invention will be described below based on specific examples. FIG. 1 is a block diagram showing the basic structure of a word processor according to a specific embodiment of the present invention. As processing devices, CPU L, CPU 2, and ROM 1 that stores programs for instructing their processing procedures,
A ROM2 is provided. The CPU 1 includes a data bus, an address bus, and a control bus (in the figure, the reference numeral 12 is
It is shown in ) is connected to the bus 12, and an interface 4 is connected to the bus 12, to which a keyboard 5 for outputting character symbol codes and control codes is connected. Similarly, a printer 9 for printing documents is connected to the bus 12 via a printer drive device 8, and a disk drive device for storing document data on a floppy disk 11, which is an external recording medium. 10 are connected. The bus 12 also has a battery-backed RAM for internally storing created document data.
1 is connected. On the other hand, a bus 13 is connected to the CPU 2, a screen driver 6 is connected to the bus 13, and a display 7 for displaying input document data is connected thereto. Further, connected to the bus 13 is a battery-backed RAM 2 in which a document area for temporarily storing document data for editing a document on the screen is formed. The CPU 1 performs key manual control, file management, disk control, printing control, etc., and the CPU 2 performs display control of the display 7, document screen collection control, etc. In order to exchange data between the CPU 1 system and the CPU 2 system, an input/output buffer 14 is connected to each bus 12.13, and the input/output buffer 14 can be accessed from both sides. . 2 and 3 are flowcharts showing the processing procedure ln of the CPU 2 related to the present invention, and FIG.
The present invention will be described in detail with reference to FIG. First, as an initial setting, there is a state indicating whether or not the specified range of document data is saved without being destroyed in the range specified data storage area (hereinafter simply referred to as the "save area"), that is, the storage area is A flag FLG that stores the state indicating whether or not it is set is set to 0 indicating an unset state, and the storage area start address DS is set to the maximum address MX that can be stored. Since they are not set in the initial state at the time of input, tfi and specified data length HL are set to 0.Next, in order to select a work item, a menu displaying the work contents is displayed on the display 7 ( 102) Next, the operator looks at the displayed menu and selects the necessary work item.
Press the specified key. When a key is pressed, a code is output from the keyboard 5, and the code is read by the CPU 1 and output to the input/output buffer 14. Therefore, the CPU 2 detects the full state of the human output buffer 14 and receives the key signal corresponding to the pressed key (
104). Next, a key signal is determined (<106), and in the case of creating a new document, processes such as inputting and editing document data from step 108 onwards are executed. If a new document is not being created, the document data selectively designated from RAM 1 where the created document data is internally stored via the traffic buffer 14 is transferred to the document@ area of RAM 2 (190). , through the processes of steps 120 and 122, which will be described later, the processes of step 108 and subsequent steps are executed. In step 108, a key signal corresponding to the next key to be pressed is received, and the key signal determination processing in steps 110 to 118 is executed. (1) When inputting document data such as character symbols, etc. If a key signal corresponding to the character symbol key is received, step 1
At 18, the corresponding characters and symbols are displayed on the display 7, and the data is stored at a predetermined address in the sentence G area. Then, the final address (hereinafter referred to as "ETX address") AR of the created document data is compared with the storage area start address DS, and if the ET,X address AR is greater than or equal to the storage area start address DS, the data in the storage area is , it has been destroyed by the created document data, so that data is no longer usable. Therefore, the flag FLG is set to O (122) to memorize such a state. The process then proceeds to step 108, where the next key signal is received, and if it is a character/symbol key, the above-described processing is performed and document data is created sequentially. When the amount of document data increases and exceeds the storage area, the storage area is released to the text@ area, and eventually the document data can be stored up to the final address \IX. (2) In the case of range specification By specifying an arbitrary range on the screen of the display 7, the corresponding range of document data can be specified. Hereinafter, this will be referred to as range specification, and the document data for which the range has been specified will be referred to as range specification data. A BLOCK key is provided as a key for specifying such a range. When the BLOCK key signal is received, the determination in step 110 becomes YES, the range OIl designation mode is set (130), and a key signal input waiting state is entered (132).
. When a key is input, the key signal is determined (134
, 140), in the case of a cursor movement key signal, the cursor is moved according to the pressing time of the key, and the movement range of the cursor is displayed in reverse (132 to 13).
8). Cursor movement key input stops, then BLOC
When the K key signal is received, steps 134 and 140 are executed, the range specification data is canceled, and the range specification start address H3 and its data length HL are stored (142).
. Then, the process returns to step 108 to wait for reception of the next key signal. Further, during the range specification mode, error processing is provided in step 144 so that keys other than the cursor key and the BLOCK key are disabled. In this way, range specification is completed. (3) The document data deletion range specification data is deleted from the document area and is also saved in the storage area. DEL to command the process.
An ETE key is provided on the keyboard 5. DEL
When the ETE key signal is received, the determination in step 112 becomes YES, and steps 150 and subsequent steps are executed. First, the storage area start address DS is the range specified data length H
It is calculated from L and the final address MX (150). Next, register R1, which specifies the address of the document data to be deleted, is initialized to the range specified start address H3, and register R2, which specifies the address of the storage area where the data is to be stored, is initialized to the storage area start address DS. ,
A register R3 that manages the number of data to be deleted and saved is initialized to the range specified data length HL (152). Next, the data stored at the address indicated by register R1 is transferred to the address indicated by register R2 (152), and the document data after the address indicated by register R1 is shifted forward and the document data is organized (156). Then, register R3 that manages the number of transferred data is subtracted by 1 (158).
, if the value is not 0, registers R1 and R2 are both 1
is updated, and the transfer source and transfer destination addresses of the next data are set (162). By repeating this process by the number HL of range designation data, the range designation data is deleted from the document data in the document area, and the range designation data is saved in the storage area. Thereafter, a flag FLG is set to 1 to indicate that data has been set in the storage area. The occupancy rate of the storage device does not change before and after the DBLETH process, and the above process can be executed no matter how long the range is specified. (4) Document insertion of data saved in the storage area During the above DELETE processing, other moving, copying, etc. processing,
Although range specification data is saved in a storage area, such data can be inserted into the same document or other documents. A PASTE key is provided to command the process. When the PASTE key signal is received, the determination in step 114 becomes YES, and step 17
0 or less processing is executed. It is determined by the flag FLG whether data is stored in the storage area (170);
If saved, the data is inserted into the document area at the specified address. The method of transferring and inserting data is similar to the processing of steps 150-162. In this data insertion process, since the document data increases after the process, the process moves to step 120, and it is determined whether the data in the storage area has been destroyed due to the increased data. That is, when the EXT address AR after data insertion processing is equal to or higher than the storage area start address, the flag FLG becomes 0.
, and the storage area is released to the document area. From then on,
Until new range specification data is saved, the RAM 2 is used only as a document area, and the rest of the RAM 2 can be used as a storage area. (5) Document data storage RAM The document data created in the document area of M2 is
The data is transferred to a predetermined area of AS+1 and stored internally. An END key is provided as a key for instructing this process. When the END key signal is received, step 11
The determination in step 6 is YES, and the processes from step 180 onwards are executed. First, the document data created in the document area is transferred to a predetermined area of RAM 1 via the human output buffer 14 (180). Next, when a range specification exists, that is, when the range specification data length HL is not 0, the range specification data is saved in the storage area, the storage area start address DS is set, and a flag indicating that the storage area is set is set. FLG is set to 1 (184). Thereafter, the process moves to step 102, a menu is displayed, and the next work item is selected. Here, if the calibration process for the internal document that has already been created is selected,
At step 190, the corresponding document data is transferred from RAM 1 to the document area of RAM 2. Since such transfer processing may destroy the data in the storage area that has already been set, this interpretation is carried out in step 120. The document data L T' to which the destination air address DS was transferred: <iy larger than the address AR means destruction of the storage area) has not been performed, so the flag FLGO remains at 1. Step 1
Processes from 08 onwards will be executed. Therefore, it is possible to insert data stored in the storage area into document data newly transferred to the document area. That is, it becomes possible to copy between documents. As described above, in this embodiment, a variable-length range specification data storage area is set according to the length of range specification data to be saved in the reverse direction from the end of the storage device, and only when saving range specification data. When the document data length of the document area is longer than the storage area, the storage area is anchored to the document area. Then, in the remaining part of the document area, it is possible to newly set a range specified data storage area having a data length that is less than or equal to the data length that can be written in the remaining part at that time. In this way, the length of document data that can be created can be expanded to the capacity of RAM 2, while providing as much of the range determination data storage function as possible.

【Effect of the invention】

The present invention is characterized in that when the remaining capacity of the document area for storing document data becomes less than a predetermined amount, the range specification data storage area is released to the document area. Therefore, the storage device can be used effectively, and the amount of documents that can be created can be increased without increasing the overall capacity of the storage device.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a word processor according to an embodiment of the present invention, and FIGS. 2 and 3 are
Flowcharts showing parts related to the present invention among the processing procedures of the CPU used in the same embodiment device, respectively;
FIG. 4 is an explanatory diagram showing the relationship between the document area and the storage area formed in the RAM 2 used in the device of the embodiment. Patent applicant Agent: Brother Industries, Ltd.
Patent attorney Osamu Fujitani volunteered to write amendments to Figure 1 procedures> July 73, 1986

Claims (1)

[Claims] A keyboard for inputting character symbol codes and control codes;
A display screen for displaying character symbol data, a processing device for processing input character symbol codes to create document data and displaying it on the display screen, and a document area for storing the document data created by the processing device. a word processor comprising: a storage device having: the storage device provided with a range specification data storage area for saving document data with the latest range specified among the document data; A remaining capacity detection unit that detects the remaining capacity of data, and when the remaining capacity detected by the remaining capacity detection unit becomes less than a predetermined amount, the range specified data storage area is released as the document area. A word processor comprising: a control unit;