JPH0236023B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic typewriter that is capable of printing out the contents of a text memory stored in a text memory based on predetermined format information in different formats.

Electronic typewriters are not only capable of printing directly when the keys are pressed, but also often have a built-in storage device of a desired capacity to enable printing after a predetermined or arbitrary time. Therefore, such electronic typewriters have a read-only memory (hereinafter referred to as ROM) that includes a program memory in which a predetermined program is written and a pattern memory that stores patterns such as character symbols, and a rewritable memory (hereinafter referred to as ROM). It has a built-in storage device consisting of RAM (referred to as RAM). There are many electronic typewriters that take advantage of the characteristics of RAM and have some editing functions. However, with conventional electronic typewriters, if you change format information such as margins or TAB in memory that has already been stored, or delete or insert a part of the text, the carriage return C The position of the line feed section without the /R code was changed according to the change. However, in the portion where the C/R code is included, the C/R is inserted at that position even if it is not at the part where the sentence breaks, making the changed sentence unnatural and hard to read.

In an electronic typewriter equipped with a memory editing function, the present invention determines whether or not C/R is truly necessary and executes it only when necessary, such as when changing the format of a text. The purpose of the present invention is to provide an electronic typewriter that is equipped with functions that allow for easy-to-read writing.

This object is to provide an electronic typewriter having the structure described in the claims, that is, a typewriter equipped with a text memory for storing document data created based on a predetermined format, and to change the format at the time of printing into the memory to the predetermined format. is an electronic typewriter capable of changing the format to a different format and printing the document data stored in the text memory based on the format, a reading means for reading the document data stored in the text memory; a position determining means for determining whether a printing position is within a line feed area in a changed format; and when the read data is a line feed code, the data printing position is outside the line feed area;
and an automatic line feed determining means for not executing a line feed operation when the immediately preceding data is not delimiter data, and an automatic line feed for executing the line feed operation when the data printing position is within a line feed area when the read data is a space code or a high code. This is achieved by an electronic typewriter having means.

The invention will now be described in detail with reference to the accompanying drawings, which illustrate embodiments of the invention.

FIG. 1 is a perspective view schematically showing an electronic typewriter according to the present invention, which is roughly divided into a keyboard portion K and a printer portion P.

The keyboard part K in the figure includes the required number of letter keys, numeric keys,
Various keys such as symbol keys, space bar, mode setting key, stop key, return to the left margin of the carriage (C/R), change or cancel settings of left and right margins, tabs (TAB), etc. Various control keys are provided. These control keys also include a backspace key, shift key, paper feed key, paper return key, repeat key, cursor key Cu, code key Co, delete key DL, insert key IN, and the like. The mode setting key Mo is a key for selecting and setting the operating mode of the electronic typewriter, such as printing mode, data transmission mode, etc. Stop key ST is a key for stopping various operations. The delete key DL is used to delete characters or lines, and the insert key IN is used to insert characters. In addition, since the electronic typewriter according to the present invention is also equipped with an arithmetic function, it has various key groups such as +-x÷= and clear in addition to the type-arithmetic switching key.

The keyboard portion K of this electronic typewriter is provided with a display portion D having a required number of digits for displaying the contents of characters, symbols, etc. that have been typed. Although an appropriate display device can be used for this display section D, from the viewpoint of power consumption and cost, it is preferable to use a liquid crystal display device.
LCD is advantageous.

In the printer section P, a carriage Ca that moves along a platen PL and a guide bar GB is disposed within an upper cover C. Although various types of printing heads PH carried by this carriage can be used, thermal heads Th.H are advantageous in terms of power consumption and small size and light weight. Thermal head Th.H has a large array of heating elements that selectively generate heat according to input, and prints in dot matrix format on plain paper via thermal paper or thermal ribbon placed on a platen. It is something.

Note that the electronic typewriter according to this embodiment has the following characteristics:
It is driven by a battery power source built into the printer section P, and turned on and off by a power switch SW attached to an appropriate position on the main body case. A.C.
Needless to say, it can also be used with commercial power by using an adapter.

FIG. 2 is a block diagram of an electronic typewriter according to the present invention. These parts include the keyboard part K, display part D, and printer part P shown in the visible part of FIG. 1, as well as the central processing unit CPU, ROM, RAM, etc. built in the main body case. Note that the keyboard section K, display section D, and printer section P each have a keyboard driver KD, display section controller DC as necessary auxiliary circuits.
and printer driver interface PI
Equipped with: Furthermore, the electronic typewriter according to the present invention is equipped with an external interface driver/receiver IR so that information can be exchanged with the outside. Therefore, it is possible to transmit information to other computers, etc., including devices of the same type, through a suitable interface, and to drive the printer section P in accordance with information received from these devices.

It will be obvious to those skilled in the art that each of the elements forming each block in FIG. .

As shown in FIG. 3, it is assumed that a document has already been written in the text 10 in an area surrounded by a solid line frame, which is the right margin 12. As shown in FIG. A case will be described in which the format of this document is changed, for example, so that the document is moved to the left within the right margin of the broken line 14. In this case, special consideration is required when starting a line between the dashed right margin 14 and the dashed-dotted line 16, which is imaginary a few characters to the left, so this portion 18 is hereinafter referred to as a line break area, ie, a hot zone. In addition,
Contrary to the above, it goes without saying that the same effect will occur if the right margin is expanded to the right.

As is well known, in the above format, C/R is performed at the right margin 12 of the solid line, and if a word is interrupted at this position, a carriage return is performed after adding a hyphen. Naturally, if the previous word ends several characters before this right margin 12, the carriage return is performed immediately without printing the next word. When changing to the dashed right margin 14 in the new format, if the words of the previously formed sentence end within the hot zone 18 and are interrupted at the previous right margin 12, the carriage return is added with a hyphen. The purpose of the present invention is achieved by carrying out the following control when performing the following operations.

FIG. 4 shows a flowchart showing the C/R operation of the electronic typewriter according to the present invention. Start from block 20, where the previously created text output is obtained, and move to block 21.
At step 2, it is determined whether or not the text memory has been read to the final address. If this determination is YES, it means that the reading up to the final address of the text memory has been completed, and the process ends as shown in block 22.

If the answer in block 24 is NO, then in block 23 the print data is retrieved from the text memory. Next, in block 24, it is determined whether it is a carriage return C/R.

[If the judgment in block 24 is YES] In this case, in block 25 it is judged whether the current position of the carriage is within the hot zone.
If this determination is NO, then in block 26 it is determined whether the previous data was sentence delimiter data. This delimited data includes a period “.”
or other symbols? ,! It includes symbols that indicate sentence breaks, such as .

If the decision in block 26 is NO, the process returns to the start and repeats the decision in block 21.

If the determination in block 26 is YES, a C/R operation is performed as in block 27, and the process returns to the start. Note that even if the determination in block 25 is YES, block 26 is skipped and the C/R operation is performed. That is, such a C/R operation is performed when the current position of the carriage is within the hot zone (block 25) and when sentence delimiter data is determined although it is not within the hot zone (block 26).

[When the judgment in block 24 is NO] Since this is not a C/R, it is then judged in block 28 whether the data in question is a {space} or a {hyphen}. If this judgment is YES, it is further judged in block 29 whether these are within the hot zone, and if they are within the hot zone, the above-mentioned block 27 is executed.
Then, C/R operation is performed. On the other hand, if this judgment is NO, if the data read in block 30 is space data, the space operation is
If the data is a hyphen, a hyphen printing operation is performed.

Further, if the determination in block 28 is NO, it means that the data is character data. In this case, it is determined whether the next space appearing in block 31 is within the right margin.
If this determination is YES, there is no problem in changing the format, and the characters are printed out as shown in block 32.

If the judgment in block 31 is NO, it is not appropriate to print as is, so block 3
After the hyphen insertion process is performed as shown in block 3, a carriage return C/R for printout and line feed is performed as shown in block 34.

Note that after blocks 30, 32, and 34, the system returns to the starting state.

As described above, according to the electronic typewriter of the present invention, when changing the format of previously formed text, the right margin and the hot zone in front of a predetermined character can be used to determine whether the text is a sentence break, a word middle, etc. It is possible to automatically perform C/R operation, space operation, printing after hyphen insertion processing, line feed C/R, etc. according to the judgment. As a result, the formatted text becomes extremely natural and easy to read. During this time, there is no need for the operator to pay special attention, and the format can be changed by paying attention only to the text.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of an electronic typewriter according to the present invention. FIG. 2 is a block diagram showing the internal structure of the electronic typewriter according to the present invention. FIG. 3 is an explanatory diagram showing a mode of format change. FIG. 4 is a flowchart showing the operation of relevant parts of the electronic typewriter according to the present invention. In the attached drawings, the main reference symbols correspond to each other as follows. K: Keyboard section, D: Display section, P: Printer section, PH: Print head, PL: Platen, GB:
Guide bar, Ca: carriage, ST: stop key, DL: delete key, IN: insert key,
Cu: cursor key, Co: code key, Mo: mode setting key, CPU: central processing unit, ROM: read-only memory, RAM: rewritable memory.

Claims (1)

[Scope of Claims] 1. A text memory for storing document data created based on a predetermined format, the format at the time of outputting from the memory is changed to a format different from the predetermined format, and the An electronic typewriter capable of printing document data stored in a text memory, comprising reading means for reading the document data stored in the text memory, and whether the data printing position is within a line break area in a changed format. a position determining means for determining the line feed, and a line feed suitability determining means for not executing the line feed operation when the read data is a line feed code, the data printing position is outside the line feed area, and the immediately preceding data is not delimiter data; An electronic typewriter comprising: automatic line feed means for executing a line feed operation when the data printing position is within a line feed area when the read data is a space code or high code.