JPS58214932A - Input system of character string - Google Patents

Abstract

PURPOSE:To facilitate an inserting operation of characters, by using the 1st and 2nd function keys to indicate and release the function which insert blanks among characters on a display of a character string input device. CONSTITUTION:A keyboard KB, a line buffer LB, an ROM display part DCON DSP and a print part PCON PRT are connected to a system bus SB on the basis of a microprocessor MPU. When a character string is spplied from the KB, this character string is stored in order of input to the BL and at the same time supplied to the part DCON in an image of the LB. The character string is displayed D with a push of a space key after the input of words is over. When characters are insterted to a charater string, a cursor is shifted to a desired position of insertion and a key ''CODE, INSERT'' is pushed to produce blanks. Then a desired character is pushed and inserted. Then a key ''CODE, INSERT'' is pushed to release an insertion mode. Thus the inserting operation of characters is facilitated.

Description

[Detailed description of the invention] Concerning the character string input method of Iwriter.

Conventionally, most typewriters are mechanical or electric type, and the desired character strings are entered in advance word by word or line by line using a display, etc.
There was no function to print word by word or line by line when a specific key was pressed. However, in recent years, so-called electronic typewriters using electronic control using a microprocessor have made it possible to print 3 IJ characters per single rib or per line as described above.

However, electronic typewriters continue the tradition of conventional mechanical or electric typewriters, and in particular, they are still capable of overlapping characters, which could be done freely with mechanical or electric typewriters. In a printing mode in which a display is used to print word by word or line by line, several methods of overlapping characters have been devised.

For example, some devices are provided with a key for inserting a blank.

Figure 1 shows the key for inserting a blank.
This is a diagram of a keyboard layout equipped with RT "'. How to use such a key IN5ERT is shown below. When printing the character string "'rypewriter" in the m-word-by-word printing mode, press the slide switch SSW/ shown in the figure. Instructs to print each word by matching the string ``
``Typewriter''. At this time, suppose you realize that you have actually manually entered ``rypwriter,'' and try to insert the character ``e'' between ``TYp'' and ``Writer.''

At this time, the display DSP is as shown in Fig. 2 (4) to (D), and Fig. 2 (4) is the incorrect character string "'rypwr.
In the display immediately after inputting "iter", C8 is a cursor.

Figure 2 [Exist]) is a key for inserting the letter N eII.''
The display immediately after moving cursor O8 backwards using BACKSPAOE"K/, Figure 2 (G) is the key "lN5ER
Display using 2 for T'' and providing 7 blank spaces for insertion,
FIG. 2(D) shows each state of the display immediately after the insertion character "e" is input. As can be easily seen from FIGS. 2(4) to 2(D), the number 2 in the key "IN5ERT" is for providing a blank on the display. In other words, if you manually enter the letter "e" on the key "lN5ERT" without pressing 2, the next letter "W" and the letter "e" will be treated as overlapping, creating the letter "W". .

Note that the keyboard layout of FIG. 1 does not have a key for forward cursor movement. Therefore, the key ``BACK''
After moving the cursor backwards with / to 5PAOE'', use the space key ``SP'' to move it forward.As mentioned above, this is a design concept that inherits the tradition of typewriters.

However, with only the insertion method using the conventional technology described above,
It may be inconvenient. For example, the conventional insertion method is sufficient for inserting the / character, but when attempting to insert a character string consisting of multiple characters, one of the inserted characters
1711 M7' The character string must be input after pressing the 2-digit key "lN5h:RT" to create a continuous blank space.

Therefore, the present invention has been made in view of the above-mentioned drawbacks, and an object thereof is to provide a character string input method that inherits the tradition of typewriters and also allows character strings to be easily inserted.

The present invention will be explained below with reference to the drawings.

In the present invention, the keyboard layout shown in FIG. 1 is adopted as is, and a new function called insert mode is added. After instructing the typewriter to enter insert mode, characters can be input between characters that have already been input. By doing so, the input character is positioned between the characters that have already been input, thereby eliminating the need for the blank insertion operation shown in FIG. 2(0).

Such an insert mode instruction is, for example, the key "0OI)K"
This is done by pressing the key "lN5ERT".

Similarly, to cancel insert mode, press the key "0ODE"
This can be done by pressing , and then pressing the key "IN5ERT".

Here, press the key "lN5iT" to instruct the insert mode.
" is pressed to move the cursor O8 to the right.The space key "SP", which previously had the function of moving the cursor in the right direction, functions in the same way as the conventional space key and displays a blank space as shown in Figure 3. Insert.

An embodiment of the character string manual system of the present invention is shown in Fig. q. qth
The figure is a block diagram showing an example of typewriter control according to the present invention. Here, KB is a keyboard, apu is a microprocessor, LB is a row buffer, ROM is a read-only memory, DOON is a display control device, POON is a print control device, DSP is a display, and PRT is a printing device. The IM is a 7-lip 70-bit for insert mode indication and cancellation that is directly related to the present invention. SB is a system node (including address bus, data bus, and control signal bus).
The typewriter shown in the qth diagram is a microprocessor MP.
The control information, that is, the program, is stored in the read-only memory ROM, and the control information is exchanged between the microprocessor MPU and devices other than the read-only memory ROM. Here, in order to make the explanation regarding the signal flow easier, we will explain the actual intervening microprocessor MPU and read-only memory! The signal flow related to J ROM will be omitted.

For example, when a character string is input from the keyboard KB in the word-by-word print mode, the character ti# information is stored in the line buffer LB in the order in which it was input. At the same time, character information is given to display the input character string to the display control bag RDOON in the image of the row buffer L13. When the key SP is pressed after inputting a certain [Q, the character information stored in the line buffer LB is sent to the print control device POON one by one. After all the character information in the line buffer LB is sent to the print control bag @PCON, the space input from the keyboard KB is sent as character information to the print control device PCON. As a result, a character string as a word is printed, followed by a blank as a word delimiter.

Next, the key "IN5ERT'" according to the present invention will be described. Conventionally, in the word-by-word printing mode, when the cursor O8 position is at the position shown in Figure 2 (G), the key "
When ``1N5ERT'' is pressed, character information is stored in the line buffer LB as shown in Figure 2 (0).In other words, the display control device DCON receives the continuous character information in the line buffer LB as is and displays it. Figure 2 (
Character information is stored in the line buffer LB so that the image of 0) can be displayed. Subsequently, when the character key "e" is pressed, the desired character information "e" is stored in the position where a blank space has been created in the line buffer LB, and the desired character information "e" is stored in the line buffer LB as shown in FIG. 2 (D). Character information is stored, and the image shown in FIG. 2(D) is displayed on the display DSP.

However, there is something to note here. The state of FIG. 2(D) caused by the inserted character key "e" is as follows. The character “e” in the string “Type” is actually the character ″′
(blank) and the character "8" are treated as overlapping characters, but especially in the case of a blank and a printed character, the blank is replaced with the printed character.

In addition, in the case of overlapping characters of printed characters and J characters, use the overlapping start code and overlapping end hood, as shown in Figure 3.
The overlapping start symbol SS and overlapping end symbol SE are supposed to surround λ or more character information "ew".In contrast, in the present invention, for example, the cursor C8 is moved as shown in Figure 1 CB). After that, press the key “0ODE”
After pressing the key "lN5ERT", character insertion is instructed and the cursor O8 is shifted to the right, and the display DSP displays "TypW*riter".
” is displayed. In this state, input the desired character to be inserted using the desired fine character key. In the example of Fig. 2 (4),
By inputting only the letter "e", the display DSP (D
The display is from "TYT]Wariter" in Figure 2 (D)
state. Then the keys “0ODE” and “l
By pressing ``N5ERT'' in this order, the character insertion mode is canceled.

In the present invention, a flip-flop IN is used to indicate and cancel the insertion mode.

This flip 70 tube II is, for example, as shown in Fig. 3.
Antgame) G/, G, 2, Tristate 7<
The flip 70 knob selection line SELIM and the read signal line WT are connected to the input terminal of the flip 70 BF and the JK flip 70 amplifier FF, and the flip 70 knob selection line SELIM and the readout signal line RD is connected to AND gate G,2. Also, JK7
Both terminals of the lip 70 are set to logic "/" so that the output Q is inverted every time a signal is applied to the clock terminal 0. The clock terminal C is connected to the output terminal of the analog/game) G/. The output of tri-state buffer BF is connected to data bus DBO-DBn. The logic of the output of the tri-state buffer BF has meaning when the terminal , F K K logic "/" is given. The output of AND gate G,2 is connected to terminal E. Therefore, from the point of view of the MPU, if a write operation is performed on the flip-flop IM, the output of the flip-flop IM is reversed, and the state of the flip-flop IM can be checked at any time by reading. . When the output of this 7-lip 70-tube IM is logic H, H, it indicates the insertion mode.

An embodiment of control according to the present invention using the hardware described above will be described using a 70-chart. FIG. 7 shows the overall control flow. When the input key is pressed in the key wait step 7.7, the input key branch routine 7.1 executes the OODE routine 7 depending on the type of the input key. .1, IN5ERT Routine 7.9, Character Key Routine 7.105BACKSPAOE Routine 7,
1/, SP Luzin 7.12, and other routines 7.3.

The other routine 7.3 will not be explained here because it is not related to the present invention.

Then, the operator is asked whether the "0ODE" key has been pressed. Step L2 is a key wait routine that concerns only the inside of the C0DE routine, and if a key is pressed, the process advances to the next steps r and 3. Step g , 3, the pressed key is '
Determine whether it is the "lN5ERT" key and select "lN5ERT".
When the 5ERT '” key is pressed, step!, go forward.

In steps j and ψ, a write pulse WT is applied to the flip 70-tube IM in order to invert the 7-lip 70-tube IM. Next, step 1. JT”0ODE
``key run nika) turns off the light and ends the OODE routine.Also, when proceeding from step 3 to step r or g, perform the conventional ``C0DE'' key related processing and proceed to the next step z.j. 0 Figure 9 shows the lN5ERT routine.First, step 1 refers to the cursor instruction register in the MPU internal register to determine the cursor position. When indicating the end of ``,'' there is no need to perform IN5ERT processing, so this routine does nothing.However, as shown in Figure 2 (B), the cursor O
If 8 does not indicate the end, go to step ta, then shift the characters after the character where cursor O8 is located in line buffer LB to the right, and in step 9.3, fill the storage area obtained by such a shift with a blank. Input text information,
Next decision step? , proceed to tI. Step? , tI, it is determined whether the flipflop II is set, that is, whether or not the insert mode is in effect. When the insert mode is selected, the cursor position is incremented by / using the step digits j, and nothing is done when the insert mode is not selected.

Figure 7.theta. is a character key routine. Step/θ, l
Then, as in step 9.7, it is determined whether the cursor position indicates the end of the valid character information, and if the cursor position is not the end, K advances to steps /θ, λ.

This step 10. Step 9 for λ. Similarly, it is determined whether or not it is in insert mode. When in insert mode, proceed to step lθ, 3, step lθ, 3 and step 1
Step 9 as described above in 0.11. and step 9.3
The same processing is performed. Thereafter, the above-mentioned overlapping character processing is performed in step /θ,j. On the other hand, step/θ
, / When the cursor position indicates the end of the valid character information, the process advances to step lθ and B, and the character information is added to the end of the valid part of the line buffer LB. Also, if it is determined in step 10.2 that the mode is not insert mode, step 10. j
The process advances to t, and overlapping character processing is performed.

Figure 1/ is the BA, OK 5PAOE routine. Here, step/1. / to determine whether cursor O3 is at the leftmost position. This can be done by checking whether the value of the cursor instruction register assigned to the MPU internal register mentioned above is O or not. In this routine, when the cursor is not in the leftmost position, it will decrement to the next step.

FIG. 12 shows an SP screen for printing each word. First, the same judgment as step IO1/ is made at step lλ, /
If the cursor position is not the last, step /2. Go to j and increase the cursor position by /. If the cursor position is the last one, step/2 to print one word. - reads the character information in the line buffer LB one character at a time and sends it to the print control device PCON, and then in step 12
．． In step 3, blank information is sent to the print control device POON. Next, step/2. Set O in the cursor instruction register at Hiro.

As explained above, according to the present invention, it is possible to easily insert characters in electronic devices such as typewriters that use a display with less than seven lines while inheriting the tradition of typewriters, and in addition, This eliminates the need for keys and also handles overlapping characters, which is unique to typewriters, so the operator can type extremely easily.

Although an example in which the present invention is applied to a typewriter has been described above, the present invention is also effective when applied to not only a typewriter but also a personal computer or other terminal device.

[Brief explanation of the drawing]

FIG. 7 is a layout diagram showing keyboard layouts of typewriters according to the conventional typewriter and the present invention, FIGS. 2(4) to (D) are diagrams for explaining the conventional character string input method, and FIG. Figure ψ is a block diagram showing an embodiment of the present invention; Figure 5 is a diagram explaining the handling of overlapping characters; Figure 4 relates to the present invention; Fig. 7 is a flowchart showing the overall control in the present invention, Fig. g is a flowchart showing its OODE routine, and Fig. 9 is a circuit diagram showing a detailed example of the 7 lip-flop shown in Fig. 9.
The flowchart showing the 5ERT routine, Figure 1θ is the same flowchart showing the character key routine, and Figure 1 is the same < BAO
FIG. 12 is a flow chart showing the KSPACE routine, and FIG. 12 is a flow chart showing the SP screen. KB...Keyboard, MPU...Microprocessor, -LB...Line buffer, 1M...Flip 70
Tsubu, ROM...read-only memory, DCON...display control device, DSP...display,
POON...print control neck, PRT...printing device, SB...system bus, FF...JK flip 70 tube, G/, G, 2...and gate, BF...tristate buffer. Patent applicant Canon Co., Ltd. Figure 10

Claims (1)

[Scope of Claims] 1) A character string input device equipped with a display device, comprising: a first function input means having an insertion function for inserting a blank between characters on the display device; A second 7'r function input means used in connection with the input means, the first function input means, and the λ-th function input means cooperate to control instruction and cancellation of the insertion function. A character string input method characterized by comprising means. 2. In the character string input method described in claim 1, the first function input means and the storage means cooperate to generate a second insertion function different from the insertion function. A character string input method characterized by having a means. 5) Percentage Allowance The character string input method according to claim 1 or 2, wherein the storage means is composed of 7 lip and 70 lip.