KR20210107266A - Electronic terminal device that support easy subscript entry for mathematical operators in electronic documents and operating method thereof - Google Patents

Abstract

Disclosed are an electronic terminal device for supporting simple subscript input for a mathematical formula operator in an electronic document, and an operating method thereof. In accordance with the present invention, when an input command of a predetermined specific operator that a subscript can be input is received from a user, a text input window for inputting the operator and an operand for the operator is displayed. Also, a subscript icon indicating that a subscript input window can be displayed at a preset point from the text input window is displayed. In addition, when the subscript icon is selected by the user, the subscript input window is displayed at each position in accordance with predetermined position information on at least one subscript to be input for the operator. Accordingly, simple subscript input for a mathematical formula operator in an electronic document can be supported.

Description

An electronic terminal device that supports simple subscript input for mathematical operators in an electronic document and an operation method thereof

The present invention relates to an electronic terminal device that supports simple subscript input to a formula operator 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, electronic document-related programs have various formulas so that, when a user wants to insert a formula into an electronic document, symbols such as Greek letters frequently used in formulas, various operators, and subscripts input to operators can be easily input. It provides the function of 'Equation Editor' that presents

Specifically, referring to FIG. 1 , when a user intends to input a formula consisting of an integral operator and an operand to be the target of the integral operation, any one of the various types of integral formulas 111 provided by the formula editor 110 One first integral formula 112 can be selected, and as the first integral formula 112 is selected, when the first integral formula 112 is displayed in the formula editing window 113, the first integral formula 112 ), by inputting numbers, letters, etc. into the subscript input window 114 and the operand input window 115 displayed so as to be able to be input in the input, the integral expression intended by the user can be completed.

However, after the user inputs numbers, characters, etc. into the subscript input window 114 and the operand input window 115 of the first integral formula 112, the position of the subscript input window 114 is set in the second integral formula 116 ), if you want to change the form of the formula, such as moving the subscript position toward the integral operator, delete the entire integral formula in which the subscript and operand are entered, select the integral formula of the desired form and input the subscript, etc. You need to change the display of the subscript using the 'Options' menu.

In this way, it is very cumbersome and uneconomic to newly input subscripts by selecting a different type of integral formula, and changing the subscript display through the 'Equation Options' menu recognizes even the existence of the menu to users who are not familiar with electronic document-related programs. There is a problem that usability is not high in that it is not done.

Therefore, there is a need for a study on a technology that supports a simple subscript input for a formula operator in an electronic document.

The electronic terminal device and the method of operation thereof according to the present invention display a text input window for inputting the operator and an operand to the operator when an input command of a predetermined operator is received from the user as a subscript can be inputted and displaying a subscript icon indicating that a subscript input window can be displayed at a preset point from the text input window, and when the subscript icon is selected by the user, at least a predetermined value that can be input for the operator By displaying the subscript input window at each position according to the position information of one subscript, it is intended to support a simple subscript input for a formula operator in an electronic document.

An electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention includes a plurality of operators and a position of at least one subscript predetermined to be input to each of the plurality of operators An operator table in which information - the position information of the at least one subscript is position information on a point where the at least one subscript is located based on an operator - is recorded in correspondence with each other - Among the plurality of operators in the operator table For operators designated as unnecessary subscripts, the location information of subscripts is not recorded - operator table maintenance unit that stores and maintains, when an input command of the first operator is received from the user through the formula editing window, the An operator display unit for displaying the first operator and a text input window for inputting an operand for the first operator, when a pointer of an input device is hovered over the text input window for the first operator by the user , a subscript check unit for confirming whether location information of a subscript corresponding to the first operator is recorded in the operator table; When location information is recorded, a subscript icon display unit displaying a subscript icon indicating that a subscript input window can be displayed at a first point predetermined from the character input window for the first operator, and and a subscript input window display unit for displaying a subscript input window at each position according to the position information of the at least one first subscript when the subscript icon is selected.

In addition, the operating method of an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention includes a plurality of operators and at least a predetermined input to each of the plurality of operators. An operator table in which the position information of one subscript - the position information of the at least one subscript is position information on a point at which the at least one subscript is located based on the operator - is recorded in correspondence with each other - in the operator table Storing and maintaining the position information of the subscript is not recorded for an operator designated as unnecessary among a plurality of operators; displaying a text input window for inputting the first operator and an operand for the first operator on a window; when a pointer of an input device is hovered over the text input window for the first operator by the user, the Checking whether position information of a subscript corresponding to the first operator is recorded in an operator table; At least one first subscript position information is recorded as position information of a subscript corresponding to the first operator in the operator table displaying a subscript icon indicating that a subscript input window can be displayed at a preset first point from the character input window for the first operator, and when the subscript icon is selected by the user, the at least one and displaying a subscript input window at each position according to the position information of the first subscript.

The electronic terminal device and the method of operation thereof according to the present invention display a text input window for inputting the operator and an operand to the operator when an input command of a predetermined operator is received from the user as a subscript can be inputted and displaying a subscript icon indicating that a subscript input window can be displayed at a preset point from the text input window, and when the subscript icon is selected by the user, at least a predetermined value that can be input for the operator By displaying the subscript input window at each position according to the position information of one subscript, it is possible to support simple subscript input with respect to the formula operator in the electronic document.

1 is a diagram for explaining a conventional technique for supporting a user to input a subscript for a formula operator in an electronic document.
FIG. 2 is a diagram illustrating a structure of an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention.
FIG. 3 is a diagram for explaining an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention.
4 is a flowchart illustrating an operating method of an electronic terminal device supporting simple subscript input to a formula operator 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 simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention.

Referring to FIG. 2 , an electronic terminal device 210 that supports simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention includes an operator table maintaining unit 211 , an operator display unit 212 , and subscript checking. It includes a unit 213 , a subscript icon display unit 214 , and a subscript input window display unit 215 .

The operator table maintaining unit 211 stores and maintains a plurality of operators and an operator table in which location information of at least one subscript predetermined to be input to each of the plurality of operators is recorded in correspondence with each other.

Here, the location information of the at least one subscript means location information on a point at which the at least one subscript is located based on an operator.

In addition, with respect to an operator designated as unnecessary among the plurality of operators in the operator table, location information of the subscript is not recorded.

For example, information may be recorded in the operator table as shown in Table 1 below.

Operator location information of subscripts

lim

sin

When an input command of the first operator is received from the user through the formula editing window, the operator display unit 212 displays a text input window for inputting the first operator and an operand to the first operator in the formula editing window. do.

When the pointer of the input device is hovered over the text input window for the first operator by the user, the subscript check unit 213 records the location information of the subscript corresponding to the first operator in the operator table. check whether there is

When the position information of at least one first subscript is recorded as the position information of the subscript corresponding to the first operator in the operator table, the subscript icon display unit 214 is configured from a text input window for the first operator ( predetermined) A subscript icon indicating that the subscript input window may be displayed at the first point is displayed.

When the subscript icon is selected by the user, the subscript input window display unit 215 displays a subscript input window at each location according to the location information of the at least one first subscript.

)'의 입력 명령이 수신되었다고 가정하는 경우, 연산자 표시부(212)는 도 3의 도면부호 310과 같이, 상기 수식 편집창에 '적분 연산자'(311)와, '적분 연산자'(311)에 대한 피연산자가 입력되기 위한 문자 입력창(312)을 표시할 수 있다.For example, from the user through the formula editing window, 'Integral operator (

)', the operator display unit 212 displays the 'integral operator' 311 and the 'integral operator' 311 in the formula editing window as shown in reference numeral 310 of FIG. 3 . A character input window 312 for inputting an operand may be displayed.

Thereafter, as shown in reference numeral 320 by the user, when the pointer 321 of the input device is hovered over the character input window 312 for the 'integral operator' 311, the subscript check unit 213 displays Table 1 and In the same operator table, it may be checked whether location information of a subscript corresponding to the 'integration operator' 311 is recorded.

The subscript icon display unit 214 is the 'integrator operator' when the position information of at least one first subscript is recorded as the position information of the subscript corresponding to the 'integration operator' 311 in the operator table as shown in Table 1 above. A subscript icon 322 indicating that the subscript input window can be displayed may be displayed at a right point, which is a preset first point, from the text input window 312 for 311 .

When the subscript icon 322 is selected by the user, the subscript input window display unit 215 displays subscript input windows 331 and 332 at respective positions according to the location information of the at least one first subscript as shown in reference numeral 330. can do.

At this time, according to an embodiment of the present invention, the electronic terminal device 210 supporting a simple subscript input for a formula operator in an electronic document has a configuration for easily removing the subscript for the formula operator, and the subscript removal icon display unit 216 and a subscript input window removal unit 217 .

After the subscript input window is displayed at each position according to the location information of the at least one first subscript, the subscript removal icon display unit 216 displays the subscript input window displayed at each position according to the location information of the at least one first subscript. When the pointer is hovered over one of the first subscript input windows, a subscript removal icon indicating that the first subscript input window can be removed is displayed at a preset second point from the first subscript input window.

When the subscript removal icon is selected by the user, the subscript input window removal unit 217 removes the first subscript input window.

For example, according to the above-described example, the subscript removal icon display unit 216 displays the at least one first subscript after the subscript input windows 331 and 332 are displayed at each position according to the position information of the at least one first subscript. When the pointer 341 is hovered over the first subscript input window 331 which is any one of the subscript input windows 331 and 332 displayed at each location according to the location information of A subscript removal icon 342 indicating that the first subscript input window 331 can be removed may be displayed at the upper right corner of the set second point.

Thereafter, when the subscript removal icon 342 is selected by the user, the subscript input window removal unit 217 may remove the first subscript input window 331 as indicated by reference numeral 350 .

Also, according to an embodiment of the present invention, auxiliary location information of the at least one subscript corresponding to each of the plurality of operators may be additionally recorded in the operator table.

Here, the auxiliary location information of the at least one subscript means location information on an auxiliary point that is pre-designated as being capable of being located other than a location according to the location information of the at least one subscript.

Also, in the operator table, auxiliary location information of the subscript is recorded for an operator designated that there is no point at which the at least one subscript can be located other than a location according to the location information of the at least one subscript among the plurality of operators. there may not be

At this time, according to an embodiment of the present invention, the electronic terminal device 210 supporting a simple subscript input for a formula operator in an electronic document has a configuration for facilitating the movement of a subscript with respect to the formula operator, and the subscript movement icon display unit 218 ) and a subscript input window moving unit 219 may be further included.

After the subscript input window is displayed at each position according to the location information of the at least one first subscript, the subscript movement icon display unit 218 displays the subscript input window displayed at each position according to the location information of the at least one first subscript. When the pointer is hovered over one of the first subscript input windows, a subscript movement icon indicating that the first subscript input window can be moved to an auxiliary point is displayed at a third preset point from the first subscript input window do.

When the subscript moving icon is selected by the user, the subscript input window moving unit 219 is configured to perform the second subscript based on auxiliary location information of at least one first subscript recorded in correspondence with the first operator in the operator table. 1 Move the subscript input window to the auxiliary point.

For example, according to the above-described example, the subscript movement icon display unit 218 displays the subscript input windows 331 and 332 at each position according to the position information of the at least one first subscript, and then, after the subscript input windows 331 and 332 are displayed, the at least one first subscript When the pointer 341 is hovered over the first subscript input window 331 which is any one of the subscript input windows 331 and 332 displayed at each location according to the location information of A subscript movement icon 343 indicating that the first subscript input window 331 can be moved to an auxiliary point may be displayed at the upper left corner of the set third point.

Thereafter, when the subscript movement icon 343 is selected by the user, the subscript input window moving unit 219 corresponds to the 'integral operator' 311 in the operator table as shown in Table 1, as shown in reference numeral 360. Based on the recorded auxiliary location information of at least one first subscript, the first subscript input window 331 may be moved to the auxiliary point.

In addition, according to an embodiment of the present invention, the electronic terminal device 210 that supports simple subscript input to a formula operator in an electronic document maintains a unique number table in a configuration for designating recommended operators that can be input in the formula editing window. It may further include a unit 220 , an operator group table maintaining unit 221 , a feature vector generating unit 222 , a Euclidean distance calculating unit 223 , and a recommended operator display unit 224 .

In this case, the electronic terminal device 210 that supports simple subscript input for a formula operator in an electronic document performs an operation on the assumption that an input command of two or more operators is received from the user through the formula editing window.

The unique number table maintaining unit 220 stores and maintains the plurality of operators and a unique number table in which different predetermined unique numbers for each of the plurality of operators are recorded in correspondence with each other.

For example, assuming that '÷', '-', '+', '×' and '∫' exist as a plurality of operators, information may be recorded in the unique number table as shown in Table 2 below. .

Operator unique number ÷ One — 2 + 3 × 4 ∫ 5

The operator group table maintaining unit 221 includes a plurality of predetermined operator groups including n (n 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. Stores and maintains an operator group table in which eigenvectors are recorded in correspondence with each other.

Here, the eigen vector for each of the plurality of operator groups is a vector having, as a component, each unique 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 ÷ — [1 2] ÷ + [1 3] ÷ × [1 4] ÷ ∫ [1 5] - + [2 3] — × [2 4] — ∫ [2 5] + × [3 4] + ∫ [3 5] × ∫ [4 5]

The characteristic vector generator 222 refers to the unique number table when it is confirmed that n operators among the plurality of operators are input to the formula editing window as operators are input to the formula editing window by the user. Thus, an n-dimensional feature vector is generated using a unique number corresponding to each of the input n operators as each component.

The Euclidean distance calculator 223 calculates a Euclidean distance between the n-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. As the Euclidean distance between two vectors is small, the two vectors can be regarded as similar vectors, and as the Euclidean distance between two vectors increases, the two vectors can be regarded as dissimilar vectors.

That is, as the Euclidean distance between the n-dimensional feature vector and the eigenvector for each of the plurality of operator groups decreases, the n-dimensional feature vector can be regarded as a vector similar to the eigenvector for each of the plurality of operator groups. As the Euclidean distance between the n-dimensional feature vector and the eigenvector for each of the plurality of operator groups increases, the n-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 224 is an operator group having an eigenvector in which the Euclidean distance to the n-dimensional feature vector is minimized, except for an operator group consisting of the input n operators from among the plurality of operator groups. is selected as a recommendation operator group, and then n operators constituting the recommendation operator group are designated as inputable recommendation operators in the formula editing window and displayed at a preset fourth point in the formula editing window.

That is, the recommendation operator display unit 224 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 fourth 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 that it is input, the feature vector generator 222 refers to the unique number table as shown in Table 2 above, and '3' is a unique number corresponding to '+' and '5' is a unique number corresponding to '∫'. '[3 5]' can be created as a '2'-dimensional feature vector with ' as each component.

The Euclidean distance calculator 223 refers to the operator group table as shown in Table 3 above, and refers to the Euclidean between the '2'-dimensional feature vector '[3 5]' 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 224 removes the operator group consisting of '+' and '∫' among the plurality of operator groups, and the Euclidean distance from '[3 5]', which is the '2'-dimensional characteristic vector, is An operator group having the smallest 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 characteristic vector '[3 5]' are selected as a plurality of operator groups, the recommended operator display unit 224 displays the selected plurality of operator groups. After randomly selecting any one of the recommended operator groups as the recommended operator group, '2' operators constituting the selected recommended operator group are designated as inputable recommendation operators in the formula editing window, and a preset fourth point in the formula editing window can be displayed in

That is, the recommendation operator display unit 224 has an eigenvector calculated as '1', which is the minimum Euclidean distance from '[3 5]', which is the '2'-dimensional feature vector, except for '[+ ∫]'. After randomly selecting '[+ ×]', which is one of the operator groups '[― ∫]', '[+ ×]', and '[× ∫]', the operators constituting '[+ ×]' '+' and 'x' may be designated as recommended operators that can be input in the formula editing window and displayed at a preset fourth point of the formula editing window.

4 is a flowchart illustrating an operation method of an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention.

In step S410, a plurality of operators and location information of at least one subscript that is predetermined to be input to each of the plurality of operators (the location information of the at least one subscript is the at least one subscript based on the operator) Stores an operator table (location information of subscripts is not recorded for operators designated as unnecessary among the plurality of operators in the operator table) to keep

In step S420, when an input command of the first operator is received from the user through the formula editing window, the first operator and a character input window for inputting the operands of the first operator are displayed in the formula editing window. .

In step S430, when the pointer of the input device is hovered over the text input window for the first operator by the user, it is checked whether location information of the subscript corresponding to the first operator is recorded in the operator table. .

In step S440, when location information of at least one first subscript is recorded as location information of a subscript corresponding to the first operator in the operator table, a first point preset from the text input window for the first operator Displays a subscript icon indicating that the subscript input window can be displayed.

In step S450, when the subscript icon is selected by the user, a subscript input window is displayed at each location according to the location information of the at least one first subscript.

In this case, according to an embodiment of the present invention, in the method of operating the electronic terminal device, after a subscript input window is displayed at each location according to the location information of the at least one first subscript, the location information of the at least one first subscript When the pointer is hovered over a first subscript input window that is any one of the subscript input windows displayed at each position according to The method may further include displaying a subscript removal icon indicating , and removing the first subscript input window when the subscript removal icon is selected by the user.

In addition, according to an embodiment of the present invention, in the operator table, auxiliary location information of the at least one subscript corresponding to each of the plurality of operators (the auxiliary location information of the at least one subscript includes the at least one subscript The at least one subscript location information may be additionally recorded, which is location information about an auxiliary point that is previously designated as being able to be located other than a location according to the location information of the at least one subscript, and the method of operating the electronic terminal device includes the at least one first After the subscript input window is displayed at each position according to the position information of the subscript, the pointer is hovered over the first subscript input window which is any one of the subscript input windows displayed at each position according to the position information of the at least one first subscript. displaying a subscript movement icon indicating that the first subscript input window can be moved to an auxiliary point at a preset third point from the first subscript input window, and when the subscript movement icon is selected by the user, The method may further include moving the first subscript input window to an auxiliary point based on auxiliary location information of at least one first subscript recorded corresponding to the first operator in the operator table.

In addition, according to an embodiment of the present invention, in the method of operating the electronic terminal device, the plurality of operators and a unique number table in which predetermined different unique numbers for each of the plurality of operators are recorded in correspondence with each other. storing and maintaining, a plurality of predetermined operator groups composed of n different operators among the plurality of operators, and a predetermined eigenvector (in each of the plurality of operator groups) for each of the plurality of operator groups. Storing and maintaining an operator group table in which the eigenvectors for each of the plurality of operator groups are vectors corresponding to and recorded with each unique number of operators belonging to each of the plurality of operator groups as a component; When it is confirmed that n operators are input in the formula editing window among the plurality of operators as operators are input to generating an n-dimensional feature vector with each component, calculating a Euclidean distance between the n-dimensional feature vector and an eigenvector for each of the plurality of operator groups, and the input of the plurality of operator groups Except for the operator group consisting of n operators, after selecting an operator group having an eigenvector in which the Euclidean distance to the n-dimensional feature vector is minimized is selected as the recommended operator group, n The method may further include designating operators as recommended operators that can be input in the formula editing window and displaying them at a preset fourth point of the formula editing window.

In the above, an operating method of an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention has been described with reference to FIG. 4 . Here, in the method of operating an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention, a simple subscript input to the formula operator in the electronic document described with reference to FIGS. 2 and 3 is performed. Since it may correspond to the configuration of the supported operation of the electronic terminal device 210 , a more detailed description thereof will be omitted.

The method of operating an electronic terminal device supporting simple subscript input to a formula operator in an electronic document according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through combination with a computer.

In addition, the operating method of the electronic terminal device supporting the simple subscript input to the formula operator in the electronic document according to an embodiment of the present invention is implemented in the form of a computer program command for execution through combination with a computer, a computer-readable medium can be recorded in 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 media 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: Electronic terminal device supporting easy subscript input for formula operators in electronic documents
211: operator table maintenance unit 212: operator display unit
213: subscript check unit 214: subscript icon display unit
215: subscript input window display unit 216: subscript removal icon display unit
217: subscript input window removal unit 218: subscript movement icon display unit
219: subscript input window moving unit 220: unique number table maintenance unit
221: operator group table maintenance unit 222: feature vector generation unit
223: Euclidean distance calculating unit 224: recommended operator display unit

Claims (10)

An electronic terminal device that supports simple subscript input for a formula operator in an electronic document, the electronic terminal device comprising:
Position information of a plurality of operators and at least one subscript predetermined to be input to each of the plurality of operators - The position information of the at least one subscript is at a point where the at least one subscript is located with respect to the operator An operator table that stores and maintains an operator table in which subscript position information is not recorded for an operator designated as unnecessary among the plurality of operators in the operator table. maintenance department;
an operator display unit configured to display a text input window for inputting the first operator and an operand for the first operator in the formula editing window when an input command of the first operator is received from the user through the equation editing window;
When a pointer of an input device is hovered over a text input window for the first operator by the user, subscript check is performed to determine whether location information of a subscript corresponding to the first operator is recorded in the operator table wealth;
When the position information of at least one first subscript is recorded as position information of the subscript corresponding to the first operator in the operator table, the subscript is placed at a predetermined first point from the text input window for the first operator. a subscript icon display unit for displaying a subscript icon indicating that the input window can be displayed; and
When the subscript icon is selected by the user, a subscript input window display unit for displaying a subscript input window at each location according to the location information of the at least one first subscript
An electronic terminal device that supports easy subscript input for formula operators in electronic documents including According to claim 1,
The electronic terminal device
After a subscript input window is displayed at each position according to the position information of the at least one first subscript, the first subscript input is any one of the subscript input windows displayed at each position according to the position information of the at least one first subscript a subscript removal icon display unit displaying a subscript removal icon indicating that the first subscript input window can be removed at a preset second point from the first subscript input window when the pointer is hovered over the window; and
When the subscript removal icon is selected by the user, the subscript input window removal unit removes the first subscript input window.
An electronic terminal device that supports easy subscript input for a formula operator in an electronic document further comprising a. According to claim 1,
In the operator table
Auxiliary location information of the at least one subscript corresponding to each of the plurality of operators - In the auxiliary location information of the at least one subscript, the at least one subscript may be located other than a location according to the location information of the at least one subscript Location information for auxiliary points pre-designated as being - is additionally recorded,
The electronic terminal device
After a subscript input window is displayed at each position according to the position information of the at least one first subscript, the first subscript input is any one of the subscript input windows displayed at each position according to the position information of the at least one first subscript a subscript movement icon display unit displaying a subscript movement icon indicating that the first subscript input window can be moved to an auxiliary point at a preset third point from the first subscript input window when the pointer is hovered over the window; and
When the subscript movement icon is selected by the user, the first subscript input window is moved to an auxiliary point based on auxiliary location information of at least one first subscript recorded corresponding to the first operator in the operator table. Subscript input window moving part
An electronic terminal device that supports easy subscript input for a formula operator in an electronic document further comprising a. According to claim 1,
The electronic terminal device
a unique number table maintaining unit for storing and maintaining a unique number table in which the plurality of operators and predetermined different unique numbers for each of the plurality of operators are recorded in correspondence with each other;
A plurality of predetermined operator groups composed of n operators (n is a natural number greater than or equal to 2) different from among the plurality of operators 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 eigen vector for each is a vector having as a component each unique number of the 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 n operators have been inputted into the formula editing window among the plurality of operators, referring to the unique number table, the input n operators a feature vector generator for generating an n-dimensional feature vector having a unique number corresponding to each component as each component;
a Euclidean distance calculator for calculating a Euclidean distance between the n-dimensional feature vector and an eigenvector for each of the plurality of operator groups; and
After selecting an operator group having an eigenvector in which the Euclidean distance to the n-dimensional feature vector is minimized as a recommended operator group, except for the operator group consisting of the input n operators from among the plurality of operator groups , a recommendation operator display unit for designating n operators constituting the recommendation operator group as inputable recommendation operators in the formula editing window and displaying them at a preset fourth point of the formula editing window
An electronic terminal device that supports easy subscript input for a formula operator in an electronic document further comprising a. In the operating method of an electronic terminal device that supports simple subscript input to a formula operator in an electronic document,
Position information of a plurality of operators and at least one subscript predetermined to be input to each of the plurality of operators - The position information of the at least one subscript is at a point where the at least one subscript is located with respect to the operator storing and maintaining an operator table in which the subscript position information is recorded in correspondence with each other;
displaying a text input window for inputting the first operator and an operand of the first operator in the formula editing window when an input command of the first operator is received from the user through the equation editing window;
checking whether position information of a subscript corresponding to the first operator is recorded in the operator table when a pointer of an input device is hovered over a text input window for the first operator by the user;
When the position information of at least one first subscript is recorded as position information of the subscript corresponding to the first operator in the operator table, the subscript is placed at a predetermined first point from the text input window for the first operator. displaying a subscript icon indicating that an input window can be displayed; and
displaying a subscript input window at each location according to the location information of the at least one first subscript when the subscript icon is selected by the user
In an electronic document including 6. The method of claim 5,
The method of operating the electronic terminal device is
After a subscript input window is displayed at each position according to the position information of the at least one first subscript, the first subscript input is any one of the subscript input windows displayed at each position according to the position information of the at least one first subscript displaying a subscript removal icon indicating that the first subscript input window can be removed at a preset second point from the first subscript input window when the pointer is hovered over the window; and
removing the first subscript input window when the subscript removal icon is selected from the user
An operating method of an electronic terminal device that supports simple subscript input for a formula operator in an electronic document further comprising a. 6. The method of claim 5,
In the operator table
Auxiliary location information of the at least one subscript corresponding to each of the plurality of operators - In the auxiliary location information of the at least one subscript, the at least one subscript may be located other than a location according to the location information of the at least one subscript Location information for auxiliary points pre-designated as being - is additionally recorded,
The method of operating the electronic terminal device is
After a subscript input window is displayed at each position according to the position information of the at least one first subscript, the first subscript input is any one of the subscript input windows displayed at each position according to the position information of the at least one first subscript displaying a subscript movement icon indicating that the first subscript input window can be moved to an auxiliary point at a third preset point from the first subscript input window when the pointer is hovered over the window; and
When the subscript movement icon is selected by the user, the first subscript input window is moved to an auxiliary point based on auxiliary location information of at least one first subscript recorded corresponding to the first operator in the operator table. step to let
An operating method of an electronic terminal device that supports simple subscript input for a formula operator in an electronic document further comprising a. 6. The method of claim 5,
The method of operating the electronic terminal device is
storing and maintaining a unique number table in which the plurality of operators and predetermined different unique numbers for each of the plurality of operators are recorded in correspondence with each other;
A plurality of predetermined operator groups composed of n operators (n is a natural number greater than or equal to 2) different from among the plurality of operators 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 the eigen vector for each is a vector having as a component each unique 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 n operators have been inputted into the formula editing window among the plurality of operators, referring to the unique number table, the input n operators generating an n-dimensional feature vector having a unique number corresponding to each component as each component;
calculating a Euclidean distance between the n-dimensional feature vector and an eigenvector for each of the plurality of operator groups; and
After selecting an operator group having an eigenvector in which the Euclidean distance to the n-dimensional feature vector is minimized as a recommended operator group, except for the operator group consisting of the input n operators from among the plurality of operator groups , designating n operators constituting the recommendation operator group as inputable recommendation operators in the formula editing window and displaying them at a preset fourth point of the formula editing window
An operating method of an electronic terminal device that supports simple subscript input for a formula operator 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 to 8 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 5 to 8 through combination with a computer.

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