KR102300491B1 - Electronic terminal device that enables easy change of matrix layout entered through the formula editing window in the electronic document and operating method thereof - Google Patents

Abstract

Disclosed are an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document, and an operating method thereof. An electronic terminal device and an operating method thereof according to the present invention, when an input command of an n (n is a natural number) xk (k is a natural number) matrix through a formula editing window in an electronic document is received from a user, composing the nxk matrix Display nxk character input windows for each component to be input, and when the pointer of the input device is hovered over a first character input window among the nxk character input windows, at a preset point from the first character input window, By displaying each of icons indicative of deletion of a column to which the first text input window belongs, deletion of a row to which the first text input window belongs, addition of a new column, and addition of a new row, it is possible to simplify the matrix according to the user's selection of each icon. It can support change of layout.

Description

An electronic terminal device that supports a simple layout change of a matrix input through the formula editing window in an electronic document and an operation method thereof METHOD THEREOF}

The present invention relates to an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document, and an operating method thereof.

Recently, as computers, smart phones, or tablet PCs are widely used, various types of electronic document-related programs have been released that allow users to read, write, and edit electronic documents using such electronic devices.

These electronic document-related programs include a word processor supporting basic document creation and editing, a spreadsheet supporting data input, arithmetic operations, and data management, and presentation programs supporting a presenter's presentation.

In relation to this, programs related to electronic documents provide various formulas so that when users want to insert formulas into electronic documents, they can easily input symbols such as Greek letters, matrices, or various operators that are frequently used in formulas. It provides the function of 'Equation Editor'.

Specifically, referring to FIG. 1 , when a user intends to insert a matrix in an equation, the layout 112 of a 3 x 3 matrix is any one of various types of matrix layouts 111 provided by the equation editor 110 . ), and as the layout 112 of the 3 x 3 matrix is selected, when the layout 112 of the 3 x 3 matrix is displayed in the formula editing window 113, in the layout 112 of the 3 x 3 matrix By inputting numbers, letters, and the like into the nine character input windows displayed to enable input of component values, an equation in which a matrix intended by the user is inserted can be completed.

However, when the user wants to change the shape of the matrix to the same as the layout 114 of the 3 x 2 matrix by deleting a specific column after component values are input to the text input windows of the layout 112 of the 3 x 3 matrix, Since it is impossible to delete some columns, the layout 112 of the 3 x 3 matrix in which each component value is input is deleted, and the layout 114 of the 3 x 2 matrix is reselected to newly input each component value, or 'Formula option' You have to change the shape of the matrix using the menu.

In this way, it is very cumbersome and uneconomical to newly input component values by selecting a matrix layout of a different type, and changing the layout of the matrix through the 'Formula Options' menu is difficult for users who are unfamiliar with electronic document-related programs even the existence of the menu. There is a problem that usability is not high in that it is not recognized.

Therefore, there is a need for a study on a technology for supporting a simple layout change of a matrix input through an equation editing window in an electronic document.

An electronic terminal device and an operating method thereof according to the present invention, when an input command of an n (n is a natural number) xk (k is a natural number) matrix through a formula editing window in an electronic document is received from a user, composing the nxk matrix Display nxk character input windows for each component to be input, and when the pointer of the input device is hovered over a first character input window among the nxk character input windows, at a preset point from the first character input window, By displaying each of icons indicative of deletion of a column to which the first text input window belongs, deletion of a row to which the first text input window belongs, addition of a new column, and addition of a new row, it is possible to simplify the matrix according to the user's selection of each icon. We want to support layout changes.

An electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention is n (n is a natural number) xk (k is a natural number) through the equation editing window from a user When a matrix input command is received, a character input window display unit for displaying nxk character input windows for inputting each of the components constituting the nxk matrix to the formula editing window, the nxk characters by the user When the pointer of the input device is hovered over a first text input window, which is one of the input windows, a column to which the first text input window belongs to a predetermined first point from the first text input window is deleted. an icon display unit for displaying a first icon indicating that the When the first icon is selected, the nxk matrix is changed to an nx(k-1) matrix and displayed by removing n character input windows constituting a column to which the first character input window belongs among the nxk character input windows. and, when the second icon is selected by the user, by adding n character input windows for adding a new column of nx 1 to the right of the column to which the first character input window belongs, the nxk matrix is converted to 1) Includes a layout change unit that displays and changes to a matrix.

In addition, in the method of operating an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention, a command to input an nxk matrix from a user through the equation editing window is provided. When received, displaying nxk character input windows for inputting each of the components constituting the nxk matrix in the formula editing window; inputting a first character that is any one of the nxk character input windows by the user When the pointer of the input device is hovered over the window, a first icon indicating that the column to which the first character input window belongs can be deleted is displayed at a first preset point from the first character input window, and the first character displaying a second icon indicating that a new column can be added at a preset second point from an input window; and when the first icon is selected by the user, the first icon among the nxk character input windows By removing n character input windows constituting a column to which the character input window belongs, the nxk matrix is changed to an nx (k-1) matrix and displayed, and when the second icon is selected by the user, the first character and changing the nxk matrix to an nx (k+1) matrix and displaying the nxk matrix by adding n character input windows for adding a new nx1 column to the right of the column to which the input window belongs.

An electronic terminal device and an operating method thereof according to the present invention, when an input command of an n (n is a natural number) xk (k is a natural number) matrix through a formula editing window in an electronic document is received from a user, composing the nxk matrix Display nxk character input windows for each component to be input, and when the pointer of the input device is hovered over a first character input window among the nxk character input windows, at a preset point from the first character input window, By displaying each of icons indicative of deletion of a column to which the first text input window belongs, deletion of a row to which the first text input window belongs, addition of a new column, and addition of a new row, it is possible to simplify the matrix according to the user's selection of each icon. It can support change of layout.

1 is a diagram illustrating a structure of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention.
2 and 3 are diagrams for explaining an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention.
4 is a flowchart illustrating an operation method of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. These descriptions are not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. While describing each drawing, like reference numerals are used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, refer to those of ordinary skill in the art to which the present invention belongs. It has the same meaning as is commonly understood by those who have it.

In this document, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, in various embodiments of the present invention, each of the components, functional blocks or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic. A circuit, an integrated circuit, an ASIC (Application Specific Integrated Circuit), etc. may be implemented with various well-known devices or mechanical elements, and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks in the accompanying block diagram or steps in the flowchart are computer program instructions that are loaded in a processor or memory of equipment capable of data processing, such as a general-purpose computer, a special-purpose computer, a portable notebook computer, and a network computer, and perform specified functions. can be interpreted as meaning Since these computer program instructions may be stored in a memory provided in a computer device or in a memory readable by a computer, the functions described in the blocks of the block diagrams or the steps of the flowcharts are produced as articles of manufacture containing instruction means for performing the same. could be In addition, each block or each step may represent a module, segment, or portion of code comprising one or more executable instructions for executing the specified logical function(s). It should also be noted that, in some alternative embodiments, it is also possible for the functions recited in blocks or steps to be executed out of the prescribed order. For example, two blocks or steps shown one after another may be performed substantially simultaneously or in the reverse order, and in some cases, some blocks or steps may be omitted.

FIG. 2 is a diagram illustrating a structure of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention.

Referring to FIG. 2 , an electronic terminal device 210 that supports a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention includes a character input window display unit 211, an icon It includes a display unit 212 and a layout change unit 213 .

When a text input window display unit 211 receives an input command of an n (n is a natural number) xk (k is a natural number) matrix from a user through the equation editing window, the components constituting the nxk matrix are displayed in the equation editing window. Displays nxk character input windows for each input.

When a pointer of an input device is hovered over a first character input window that is one of the nxk character input windows by the user, the icon display unit 212 is preset from the first character input window. displaying a first icon indicating that a column to which the first text input window belongs can be deleted at a first point, and indicating that a new column can be added at a second point preset from the first text input window A second icon is displayed.

When the first icon is selected by the user, the layout change unit 213 removes n character input windows constituting a column to which the first character input window belongs from among the nxk character input windows by removing the nxk matrix. is changed to an nx (k-1) matrix and displayed, and when the second icon is selected by the user, n character input windows for adding nx 1 new columns to the right of the column to which the first character input window belongs By adding , the nxk matrix is changed to an nx (k+1) matrix and displayed.

For example, assuming that an input command of the '3' x '3' matrix 310 is received from the user through the formula editing window, the text input window display unit 211 displays the '3' x '3' matrix in the formula editing window. '9' character input windows for inputting each of the components constituting the 310 may be displayed. In this way, when the '9' text input windows are displayed, the user can display the '1', '2', and '3' in each of the '9' character input windows, as shown in reference numeral 310 of FIG. 3 . By inputting a number, the '3' x '3' matrix 310 in which each component is input can be completed.

When the pointer 322 of the input device is hovered over the 'character input window 1' 321, which is any one of the '9' character input windows, by the user as shown in reference numeral 320, the icon display unit 212 is A first icon 323 indicating that the column to which the 'character input window 1' 321 belongs can be deleted may be displayed on the upper left side of the upper left, which is a first point preset from the 'text input window 1' 321, , a second icon 324 indicating that a new column can be added may be displayed at the upper right, which is a second preset point from the 'character input window 1' 321 .

In addition, when the first icon 323 is selected by the user, the layout change unit 213 includes '3' constituting a column to which 'text input window 1' 321 belongs among the '9' text input windows. By removing the ' character input windows 325 , the '3' x '3' matrix 310 can be changed to a '3' x '2' matrix 330 and displayed, and the second When the icon 324 is selected, by adding '3' character input windows 341 for adding a new column of '3' x 1 to the right of the column to which the 'character input window 1' 321 belongs, ' The 3' x '3' matrix 310 may be changed to a '3' x '4' matrix 340 and displayed.

At this time, according to an embodiment of the present invention, when the pointer of the input device is hovered over the first text input window by the user, the icon display unit 212 is located at a third preset point from the first text input window. a third icon indicating that a line to which the first text input window belongs can be deleted, and a fourth icon indicating that a new line can be added at a preset fourth point from the first text input window can be displayed

In addition, according to an embodiment of the present invention, when the third icon is selected by the user, the layout change unit 213 is configured to configure a row among the nxk text input windows to which the first text input window belongs. By removing the number of character input windows, the nxk matrix is changed to an (n-1) xk matrix and displayed, and when the fourth icon is selected by the user, 1 xk at the bottom of the row to which the first character input window belongs By adding k character input windows for adding a new row of , the nxk matrix is changed to a (n+1)xk matrix and displayed.

For example, as indicated by reference numeral 350, the icon display unit 212 is displayed from the 'text input window 2' 351 when the pointer 352 of the input device is hovered over the 'text input window 2' 351 by the user. A third icon 353 indicating that the line to which the 'character input window 2' 351 belongs can be deleted may be displayed at the upper right corner of the third preset point, and the 'text input window 2' (351) A fourth icon 354 indicating that a new row can be added may be displayed at the lower right corner, which is a fourth preset point.

Then, when the third icon 353 is selected by the user, the layout change unit 213 configures the row to which the 'text input window 2' 351 belongs among the '9' text input windows. By removing the ' character input windows 355 , the '3' x '3' matrix 310 can be changed to a '2' x '3' matrix 360 and displayed, and a fourth When the icon 354 is selected, by adding '3' character input windows 371 for adding a new line of 1 x '3' to the bottom of the row to which the 'character input window 2' 351 belongs, The '3' x '3' matrix 310 may be displayed by changing the '4' x '3' matrix 370 .

In addition, according to an embodiment of the present invention, the electronic terminal device 210 supporting a simple layout change of a matrix input through the equation editing window in an electronic document is an operator composed of operators that can be input into the equation editing window. A configuration for displaying the list may further include an operator table maintenance unit 214 , an operator list generation unit 215 , and an operator list display unit 216 .

The operator table maintaining unit 214 stores an operator table in which a plurality of different operators that can be input to the formula editing window and a predetermined priority sequence number for each of the plurality of operators are recorded in correspondence with each other. to keep

For example, assuming that '÷', '-', '+', 'x', and '∫' exist as a plurality of operators, information may be recorded in the operator table as shown in Table 1 below.

Operator priority order ÷ 4 — 2 + One × 3 ∫ 5

When the operator list display command is received from the user, the operator list generator 215 arranges the plurality of operators recorded in the operator table in ascending order based on the priority sequence number of each of the plurality of operators. create

The operator list display unit 216 displays the operator list at a preset fifth point of the formula editing window.

For example, according to the above-described example, when an operator list display command is received from the user, the operator list generator 215 converts the plurality of operators recorded in the operator table such as Table 1 to the plurality of operators. By sorting in ascending order based on each priority sequence number, an operator list as shown in Table 2 below can be generated.

operator list (precedence order) + (1) - (2) × (3) ÷ (4) ∫ (5)

Thereafter, the operator list display unit 216 may display the operator list as shown in Table 2 above at a preset fifth point of the formula editing window.

In addition, according to an embodiment of the present invention, the electronic terminal device 210 supporting a simple layout change of a matrix input through an equation editing window in an electronic document includes an operator group table maintenance unit 217 and a characteristic vector generation unit. It may further include a unit 218 , a Euclidean distance calculating unit 219 , and a recommended operator display unit 220 .

The operator group table maintaining unit 217 includes a plurality of predetermined operator groups including m (m is a natural number equal to or greater than 2) different operators among the plurality of operators, and a predetermined number of operator groups for each of the plurality of operator groups. It stores and maintains an operator group table in which eigenvectors are recorded in correspondence with each other.

Here, the eigenvector for each of the plurality of operator groups is a vector having, as a component, each priority sequence number of operators belonging to each of the plurality of operator groups.

For example, if it is assumed that the plurality of operators are '÷', '-', '+', '×', and '∫', and n is '2', as in the above example, the operator group table includes the following Information may be recorded as shown in Table 3.

operator group eigenvector ÷ — [2 4] ÷ + [1 4] ÷ × [3 4] ÷ ∫ [4 5] - + [1 2] — × [2 3] — ∫ [2 5] + × [1 3] + ∫ [1 5] × ∫ [3 5]

When it is confirmed that m operators among the plurality of operators have been input to the formula editing window as operators are input to the formula editing window by the user, the characteristic vector generator 218 refers to the operator table , an m-dimensional feature vector having a priority order corresponding to each of the input m operators as each component is generated.

The Euclidean distance calculator 219 calculates a Euclidean distance between the m-dimensional feature vector and an eigenvector for each of the plurality of operator groups.

Here, the Euclidean distance refers to a distance between two vectors and may be calculated according to Equation 1 below.

In Equation 1, D denotes a Euclidean distance, and p _i and q _i denote i-th components included in the two vectors. The smaller the Euclidean distance between two vectors is, the more similar the two vectors are.

That is, as the Euclidean distance between the m-dimensional feature vector and the eigenvector for each of the plurality of operator groups decreases, the m-dimensional feature vector can be regarded as a vector similar to the eigenvector for each of the plurality of operator groups. and, as the Euclidean distance between the m-dimensional feature vector and the eigenvector for each of the plurality of operator groups increases, the m-dimensional feature vector can be regarded as a vector dissimilar to the eigenvector for each of the plurality of operator groups. have.

The recommended operator display unit 220 includes an operator group having an eigenvector in which the Euclidean distance to the m-dimensional characteristic vector is minimized, except for an operator group consisting of the input m operators among the plurality of operator groups. is selected as a recommended operator group, and m operators constituting the recommended operator group are designated as inputable recommendation operators in the formula editing window and displayed at a preset sixth point of the formula editing window.

That is, the recommendation operator display unit 220 may support the user to receive recommendations for operators to be input next by displaying the recommended operators inputtable in the formula editing window at a preset sixth point of the formula editing window.

For example, '+' and '∫', which are '2' operators among the plurality of operators '÷', '−', '+', '×', and '∫', are displayed in the formula editing window by the user. Assuming input, the feature vector generator 218 refers to the operator table as shown in Table 1 above, and '1' is a unique number corresponding to '+' and '5' is a unique number corresponding to '∫'. '[1 5]' can be generated as a '2'-dimensional feature vector with .

The Euclidean distance calculator 219 refers to the operator group table as shown in Table 3 above, and refers to the Euclidean between '[1 5]', which is the '2'-dimensional feature vector, and the eigenvector for each of the plurality of operator groups. The distance can be calculated as shown in Table 4 below according to Equation 1 above.

Thereafter, the recommended operator display unit 220 removes the operator group consisting of '+' and '∫' among the plurality of operator groups, and the Euclidean distance from the '2'-dimensional characteristic vector '[1 5]' is An operator group having the least computed eigenvector may be selected as the recommended operator group.

At this time, if a plurality of operator groups having an eigenvector calculated with a minimum Euclidean distance from the '2'-dimensional feature vector '[1 5]' are selected as a plurality of operator groups, the recommended operator display unit 220 displays the selected plurality of operator groups. After randomly selecting any one of the operator groups as the operator group, '2' operators constituting the selected recommended operator group are designated as inputable recommended operators in the formula editing window, and are displayed at a preset 6th point in the formula editing window. can be displayed

That is, the recommendation operator display unit 220 has an eigenvector calculated as '1' with the minimum Euclidean distance from '[1 5]', which is the '2'-dimensional feature vector, except for '[+ ∫]'. After randomly selecting '[÷ +]', which is one of the operator groups '[÷ +]' and '[― ∫]', the operators '÷' and '+' constituting '[÷ +]' may be designated as recommended operators inputtable in the formula editing window and displayed at a preset sixth point of the formula editing window.

4 is a flowchart illustrating an operation method of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention.

In step S410, when an input command of an n x k matrix is received from the user through the formula editing window, n x k character input windows for inputting each of the components constituting the n x k matrix are displayed in the formula editing window.

In step S420, when the pointer of the input device is hovered over the first character input window, which is any one of the nxk character input windows, by the user, the first character is moved to a predetermined first point from the first character input window. A first icon indicating that a column to which the text input window belongs can be deleted is displayed, and a second icon indicating that a new column can be added at a second preset point from the first text input window is displayed.

In step S430, when the first icon is selected by the user, n character input windows constituting a column to which the first character input window belongs are removed from among the nxk character input windows, thereby forming the nxk matrix by nx (k-1) is changed to a matrix and displayed, and when the second icon is selected by the user, n character input windows for adding a new column of nx 1 are added to the right of the column to which the first character input window belongs By doing so, the nxk matrix is changed to an nx (k+1) matrix and displayed.

In this case, according to an embodiment of the present invention, in the method of operating the electronic terminal device, when the pointer of the input device is hovered over the first text input window by the user, a third preset value is generated from the first text input window. a fourth icon indicating that a line to which the first text input window belongs can be deleted at a point and indicating that a new line can be added at a preset fourth point from the first text input window When the third icon is selected by the user and the step of displaying an icon, the nxk matrix is formed by removing k character input windows constituting the row to which the first character input window belongs from among the nxk character input windows. (n-1) k characters input window for adding a new row of 1 x k to the bottom of the row to which the first character input window belongs when the display is changed to and displayed in an xk matrix, and the fourth icon is selected by the user The method may further include changing the n-by-k matrix to a (n+1)-by-k matrix by adding the .

In addition, according to an embodiment of the present invention, in the method of operating the electronic terminal device, a plurality of different operators that are predetermined to be input to the formula editing window and a predetermined priority sequence number for each of the plurality of operators Storing and maintaining an operator table recorded in correspondence with each other. When an operator list display command is received from the user, the plurality of operators recorded in the operator table is selected based on the priority sequence number of each of the plurality of operators The method may further include generating an operator list sorted in ascending order by , and displaying the operator list at a preset fifth point of the formula editing window.

In addition, according to an embodiment of the present invention, the method of operating the electronic terminal device includes a plurality of predetermined operator groups composed of different operators among the plurality of operators and a preset operation for each of the plurality of operator groups. By storing an operator group table in which a predetermined eigenvector - the eigenvector for each of the plurality of operator groups is a vector whose component is each priority sequence number of the operators belonging to each of the plurality of operator groups - is recorded in correspondence with each other maintaining, when it is confirmed that m operators among the plurality of operators have been input to the formula editing window as operators are input in the formula editing window by the user, referring to the operator table, generating an m-dimensional feature vector having a priority sequence number corresponding to each of the m operators as each component, calculating a Euclidean distance between the m-dimensional feature vector and an eigenvector for each of the plurality of operator groups and an operator group having an eigenvector in which the Euclidean distance to the m-dimensional feature vector is calculated as a minimum, except for an operator group consisting of the input m operators from among the plurality of operator groups, is selected as a recommended operator group Thereafter, the method may further include designating the m operators constituting the recommendation operator group as inputable recommendation operators in the formula editing window and displaying the m operators at a preset sixth point of the formula editing window.

In the above, an operation method of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention has been described with reference to FIG. 4 . Here, the operating method of the electronic terminal device supporting a simple layout change of a matrix input through the formula editing window in an electronic document according to an embodiment of the present invention is expressed in the electronic document described with reference to FIGS. 2 and 3 . Since it may correspond to the configuration of the operation of the electronic terminal device 210 that supports a simple layout change of a matrix input through the editing window, a more detailed description thereof will be omitted.

A method of operating an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention is a computer program stored in a storage medium for execution through combination with a computer can be implemented as

In addition, the operating method of an electronic terminal device supporting a simple layout change of a matrix input through an equation editing window in an electronic document according to an embodiment of the present invention is in the form of a computer program command for execution through combination with a computer may be implemented and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

210: an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document
211: text input window display unit 212: icon display unit
213: layout change unit 214: operator table maintenance unit
215: operator list generation unit 216: operator list display unit
217: operator group table maintenance unit 218: feature vector generation unit
219: Euclidean distance calculating unit 220: recommended operator display unit

Claims (10)

When an input command of an n (n is a natural number) xk (k is a natural number) matrix is received from the user through the formula editing window, nxk characters for inputting each of the components constituting the nxk matrix to the formula editing window a character input window display unit for displaying input windows;
When a pointer of an input device is hovered over a first character input window, which is one of the nxk character input windows, by the user, the first character is located at a predetermined first point from the first character input window. Displaying a first icon indicating that a column to which one text input window belongs can be deleted, and displaying a second icon indicating that a new column can be added at a preset second point from the first text input window icon display unit;
When the first icon is selected by the user, the nxk matrix is converted to nx(k-1) by removing n character input windows constituting a column to which the first character input window belongs among the nxk character input windows. The nxk matrix is displayed by changing to a matrix, and when the second icon is selected by the user, n character input windows for adding a new nx1 column are added to the right of the column to which the first character input window belongs. a layout change unit for changing and displaying the nx (k+1) matrix;
an operator table maintaining unit storing and maintaining an operator table in which a plurality of different operators that can be input to the formula editing window and a predetermined priority order number for each of the plurality of operators are recorded in correspondence with each other;
an operator list generator configured to generate an operator list in which the plurality of operators recorded in the operator table are arranged in ascending order based on the priority sequence number of each of the plurality of operators when the operator list display command is received from the user; and
Operator list display unit for displaying the operator list at a preset fifth point of the formula editing window
An electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document including According to claim 1,
The icon display unit
When the pointer of the input device is hovered over the first text input window by the user, the first text input window indicates that a line to which the first text input window belongs can be deleted at a third preset point from the first text input window. displaying a 3 icon, and displaying a fourth icon indicating that a new line can be added at a preset fourth point from the first text input window,
The layout change unit
When the third icon is selected by the user, the nxk matrix is converted to (n-1) xk by removing k character input windows constituting a row to which the first character input window belongs among the nxk character input windows. The nxk by adding k character input windows for adding a new row of 1 x k to the bottom of the row to which the first character input window belongs when the fourth icon is selected by the user and changed to a matrix. An electronic terminal device that supports a simple layout change of a matrix input through a formula editing window in an electronic document, characterized in that the matrix is changed to a (n+1) x k matrix and displayed. delete According to claim 1,
A plurality of predetermined operator groups composed of m different operators among the plurality of operators (m is a natural number greater than or equal to 2) and a predetermined eigenvector for each of the plurality of operator groups - the plurality of operator groups an operator group table maintaining unit for storing and maintaining an operator group table in which the eigenvectors for each of the plurality of operator groups are vectors having as a component each priority sequence number of operators belonging to each of the plurality of operator groups;
As operators are input to the formula editing window by the user, if it is confirmed that m operators have been inputted to the formula editing window among the plurality of operators, referring to the operator table, the input m operators are a feature vector generator for generating an m-dimensional feature vector having a priority order corresponding to each component as each component;
a Euclidean distance calculating unit for calculating a Euclidean distance between the m-dimensional feature vector and an eigenvector for each of the plurality of operator groups; and
After excluding the operator group composed of the input m operators from among the plurality of operator groups, an operator group having an eigenvector in which the Euclidean distance to the m-dimensional feature vector is calculated as the minimum is selected as the recommended operator group. , a recommendation operator display unit for designating m operators constituting the recommendation operator group as inputable recommendation operators in the formula editing window and displaying them at a preset sixth point of the formula editing window
An electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document further comprising a. When an input command of an n (n is a natural number) xk (k is a natural number) matrix is received from the user through the formula editing window, nxk characters for inputting each of the components constituting the nxk matrix to the formula editing window displaying input windows;
When a pointer of an input device is hovered over a first character input window, which is one of the nxk character input windows, by the user, the first character is located at a predetermined first point from the first character input window. Displaying a first icon indicating that a column to which one text input window belongs can be deleted, and displaying a second icon indicating that a new column can be added at a preset second point from the first text input window step;
When the first icon is selected by the user, the nxk matrix is converted to nx(k-1) by removing n character input windows constituting a column to which the first character input window belongs among the nxk character input windows. The nxk matrix is displayed by changing to a matrix, and when the second icon is selected by the user, n character input windows for adding a new nx1 column are added to the right of the column to which the first character input window belongs. changing to an nx (k+1) matrix and displaying it;
storing and maintaining an operator table in which a plurality of different operators that can be input into the formula editing window and a predetermined priority order number for each of the plurality of operators are recorded in correspondence with each other;
generating an operator list in which the plurality of operators recorded in the operator table are arranged in ascending order based on the priority sequence number of each of the plurality of operators when the operator list display command is received from the user; and
displaying the operator list at a preset fifth point of the formula editing window
In an electronic document including 6. The method of claim 5,
When the pointer of the input device is hovered over the first text input window by the user, the first text input window indicates that a line to which the first text input window belongs can be deleted at a third preset point from the first text input window. displaying a third icon and displaying a fourth icon indicating that a new line can be added at a preset fourth point from the first text input window; and
When the third icon is selected by the user, the nxk matrix is converted to (n-1) xk by removing k character input windows constituting a row to which the first character input window belongs among the nxk character input windows. The nxk by adding k character input windows for adding a new row of 1 x k to the bottom of the row to which the first character input window belongs when the fourth icon is selected by the user and changed to a matrix. Converting the matrix to a (n+1) x k matrix and displaying it
An operating method of an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document further comprising a. delete 6. The method of claim 5,
A plurality of predetermined operator groups composed of m different operators among the plurality of operators (m is a natural number greater than or equal to 2) and a predetermined eigenvector for each of the plurality of operator groups - the plurality of operator groups storing and maintaining an operator group table in which each of the eigenvectors is a vector containing, as a component, a priority sequence number of operators belonging to each of the plurality of operator groups in correspondence with each other;
As operators are input to the formula editing window by the user, if it is confirmed that m operators have been inputted to the formula editing window among the plurality of operators, referring to the operator table, the input m operators are generating an m-dimensional feature vector having a priority order corresponding to each component as each component;
calculating a Euclidean distance between the m-dimensional feature vector and an eigenvector for each of the plurality of operator groups; and
After excluding the operator group composed of the input m operators from among the plurality of operator groups, an operator group having an eigenvector in which the Euclidean distance to the m-dimensional feature vector is calculated as the minimum is selected as the recommended operator group. , designating the m operators constituting the recommended operator group as inputable recommended operators in the formula editing window and displaying them at a preset sixth point of the formula editing window.
An operating method of an electronic terminal device that supports a simple layout change of a matrix input through an equation editing window in an electronic document further comprising a. A computer-readable recording medium recording a computer program for executing the method of any one of claims 5, 6, or 8 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 5, 6 or 8 in combination with a computer.

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