KR102468082B1 - Correction method for handwriting input, electronic device and storage medium therefor - Google Patents

Abstract

According to various embodiments, an electronic device includes a display, a processor, and a memory operatively connected to the display and the processor and configured to store a plurality of reference font characteristic values, wherein the memory, when executed, When writing data is input through the display, the processor recognizes handwritten characters corresponding to the inputted handwriting data, checks font characteristic values for the recognized handwritten characters, and selects among the plurality of standard font characteristic values. Instructions for selecting a reference font characteristic value corresponding to the checked font characteristic value, correcting the handwritten characters based on the selected reference font characteristic value, and displaying the handwritten characters on the display may be stored. Other embodiments are possible.

Description

Correction method for handwriting input, electronic device and storage medium therefor

Various embodiments of the present disclosure relate to a correction method for handwriting input and an electronic device therefor.

Recently, the use of portable electronic devices such as smart phones, tablet PCs, or wearable devices is increasing, and users can use various functions using various input means, for example, input tools such as a stylus pen as well as a finger. have.

Compared to the touch input method using a finger, the input method using a stylus pen enables more precise touch input, so it can be applied more usefully when performing applications such as memos or sketches. In addition, the content creation method through handwriting input has a high degree of freedom in content creation, enables more intuitive and rapid input, and is highly useful due to the improvement of text recognition technology for handwritten content.

Handwriting by a user may have many errors depending on the size and surface characteristics of an electronic device such as a smart phone or the user's situation. In addition, handwritten characters input by the user through the stylus pen may have different sizes, letter spacing, or inclination, which may reduce readability, and errors may occur due to imbalance of strokes or non-uniformity of words or letters in a sentence. Therefore, in order to utilize the content creation method through handwriting input, technology development for error correction and beautifying methods is being performed.

In the case of general handwriting correction, correction is generally made based on one size and position determined by the system, and in most cases, a standard font file, such as a font image, is required.

In this case, a memory space in the form of a database for storing the reference font image is required, and a lot of resources are inevitably required due to font rendering for processing handwritten characters corresponding to handwriting input into image files. In addition, the handwriting input by the user contains the user's own handwriting, but through correction, handwriting characteristics may be lost or corrections that do not suit the handwriting may be made.

Accordingly, there is a demand for a technology capable of effectively providing the user with more neatly aligned handwritten characters through simple correction while maintaining the user's handwriting.

According to various embodiments, an electronic device includes a display, a processor, and a memory operatively connected to the display and the processor and configured to store a plurality of reference font characteristic values, wherein the memory, when executed, When writing data is input through the display, the processor recognizes handwritten characters corresponding to the inputted handwriting data, checks font characteristic values for the recognized handwritten characters, and selects among the plurality of standard font characteristic values. Instructions for selecting a reference font characteristic value corresponding to the checked font characteristic value, correcting the handwritten characters based on the selected reference font characteristic value, and displaying the handwritten characters on the display may be stored.

According to various embodiments, a method for correcting handwriting input in an electronic device may include, when writing data is input through a display of the electronic device, recognizing handwritten characters corresponding to the inputted handwriting data, and recognizing the recognized handwritten characters. An operation of checking a font characteristic value for , an operation of selecting a reference font characteristic value corresponding to the checked font characteristic value from among a plurality of reference font characteristic values stored in the memory of the electronic device, and and correcting the handwritten characters based on the method, and displaying the corrected handwritten characters on a display of the electronic device.

According to various embodiments, a storage medium storing instructions and storing a plurality of reference font characteristic values may be configured to cause the at least one processor to perform at least one operation when the instructions are executed by the at least one processor. The at least one operation may include, when writing data is input through a display of an electronic device, recognizing handwritten characters corresponding to the inputted handwriting data, and checking a font characteristic value of the recognized handwritten characters. , an operation of selecting a reference font characteristic value corresponding to the checked font characteristic value from among the plurality of reference font characteristic values, and the location, size, spacing, or character width of the handwritten characters based on the selected reference font characteristic value and correcting at least one of the corrected handwritten characters and displaying the corrected handwritten characters on the display.

In various embodiments, while maintaining the user's handwriting, more neatly aligned handwritten characters may be effectively provided to the user through simple correction.

Also, in various embodiments, in correcting handwriting input, fast correction may be possible by based on the location and size according to the most similar reference characteristic value corresponding to the font characteristic value.

In addition, various embodiments may efficiently use memory resources and provide quick correction in correcting handwriting input.

1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure.
2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
3 is a perspective view of the front of an electronic device according to an exemplary embodiment.
4 is a perspective view of the back of the electronic device of FIG. 3;
5 is an exploded perspective view of the electronic device of FIG. 3 .
6 is a flowchart illustrating an operating method in an electronic device according to various embodiments of the present disclosure.
7 is a flowchart illustrating a detailed operation method in an electronic device according to various embodiments of the present disclosure.
8 is an exemplary diagram for explaining font characteristic values according to various embodiments of the present disclosure.
9 is an exemplary view for explaining standard font characteristic values according to various embodiments of the present disclosure.
10 is an exemplary diagram for explaining a method of correcting the inclination of handwritten characters according to various embodiments of the present disclosure.
11 is an exemplary diagram for explaining a method of checking font characteristic values for handwritten characters according to various embodiments of the present disclosure.
12 is an exemplary diagram for explaining a selection method for standard font characteristic values according to various embodiments of the present disclosure.
13A and 13B are exemplary diagrams for explaining a correction method for each correction unit for handwritten characters according to various embodiments of the present disclosure.
14 is an exemplary screen view according to correction of input handwritten characters according to various embodiments of the present disclosure.
15 is an exemplary screen view according to correction of handwritten characters input through an input window according to various embodiments of the present disclosure.
16 is a flowchart illustrating a method of correcting and returning handwritten characters according to various embodiments of the present disclosure.
17 is an exemplary view of a screen according to correction and recovery of handwritten characters according to various embodiments of the present disclosure.

Terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art of the present invention. Terms defined in commonly used dictionaries may be interpreted as having the same or similar meanings as those in the context of the related art, and unless explicitly defined in this document, they are not interpreted in ideal or excessively formal meanings. . In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of the present invention.

1 is a block diagram of an electronic device 101 within a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100, an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or through a second network 199. It is possible to communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, a sensor module ( 176), interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ) may be included. In some embodiments, in the electronic device 101, at least one of these components (eg, the display device 160 or the camera module 180) may be omitted or one or more other components may be added. In some embodiments, some of these components may be implemented as a single integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illumination sensor) may be implemented while being embedded in the display device 160 (eg, a display).

The processor 120, for example, executes software (eg, the program 140) to cause at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, the processor 120 transfers commands or data received from other components (eg, sensor module 176 or communication module 190) to volatile memory 132. , process commands or data stored in the volatile memory 132 , and store resultant data in the non-volatile memory 134 . According to one embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and a secondary processor 123 (eg, a graphic processing unit, an image signal processor) that can operate independently or together with the main processor 121. , sensor hub processor, or communication processor). Additionally or alternatively, the secondary processor 123 may be configured to use less power than the main processor 121 or to be specialized for a designated function. The secondary processor 123 may be implemented separately from or as part of the main processor 121 .

The secondary processor 123 may, for example, take the place of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, running an application). ) state, together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to one embodiment, the auxiliary processor 123 (eg, an image signal processor or a communication processor) may be implemented as part of other functionally related components (eg, the camera module 180 or the communication module 190). have.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, program 140) and commands related thereto. The memory 130 may include volatile memory 132 or non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input device 150 may receive a command or data to be used for a component (eg, the processor 120) of the electronic device 101 from an outside of the electronic device 101 (eg, a user). The input device 150 may include, for example, a microphone, mouse, keyboard, or digital pen (eg, a stylus pen).

The sound output device 155 may output sound signals to the outside of the electronic device 101 . The audio output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display device 160 may visually provide information to the outside of the electronic device 101 (eg, a user). The display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device. According to an embodiment, the display device 160 may include a touch circuitry set to detect a touch or a sensor circuit (eg, a pressure sensor) set to measure the intensity of force generated by the touch. have.

The audio module 170 may convert sound into an electrical signal or vice versa. According to an embodiment, the audio module 170 acquires sound through the input device 150, the audio output device 155, or an external electronic device connected directly or wirelessly to the electronic device 101 (eg: Sound may be output through the electronic device 102 (eg, a speaker or a headphone).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device 101 to an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 may be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or motion) or electrical stimuli that a user may perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to one embodiment, the power management module 388 may be implemented as at least part of a power management integrated circuit (PMIC), for example.

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). Establishment and communication through the established communication channel may be supported. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : a local area network (LAN) communication module or a power line communication module).

Among these communication modules, the corresponding communication module is a first network 198 (eg, a short-range communication network such as Bluetooth, WiFi direct, or IrDA (infrared data association)) or a second network 199 (eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunications network such as a LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or implemented as a plurality of separate components (eg, multiple chips). The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 may be identified and authenticated.

The antenna module 197 may transmit or receive signals or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module may include one antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is selected from the plurality of antennas by the communication module 190, for example. can be chosen A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, RFIC) may be additionally formed as a part of the antenna module 197 in addition to the radiator.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the electronic devices 102 and 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of operations executed in the electronic device 101 may be executed in one or more external devices among the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead of executing the function or service by itself. Alternatively or additionally, one or more external electronic devices may be requested to perform the function or at least part of the service. One or more external electronic devices receiving the request may execute at least a part of the requested function or service or an additional function or service related to the request, and deliver the execution result to the electronic device 101 . The electronic device 101 may provide the result as at least part of a response to the request as it is or additionally processed. To this end, for example, cloud computing, distributed computing, or client-server computing technology may be used.

2 is a block diagram 200 of an electronic device 101 according to various embodiments of the present disclosure. Referring to FIG. 2 , an electronic device 101 according to various embodiments is a device (eg, a smart phone or a tablet computer) that executes an application in response to a user's handwriting input, and includes a processor 120 and a memory 130. and a display device 160 . Here, not all components shown in FIG. 2 are essential components of the electronic device 101, and the electronic device 101 may be implemented with more or fewer components than those shown in FIG. 2 .

Referring to FIG. 2 , in one embodiment, the user of the electronic device 101 may input handwritten characters through the display device 160, and on the screen of the display device 160 (eg, the display 210). Handwritten characters input by the user may be displayed on . For example, since the handwritten characters are handwritten by the user, the size, arrangement, letter spacing, or line spacing of the handwritten characters may not be constant.

According to an embodiment, the processor 120 may recognize input handwriting data and correct the recognized handwritten characters in a designated correction unit, eg, a sentence unit, a stem unit, or a character unit. For example, the processor 120 may check a font characteristic value of the handwritten characters by analyzing each stroke (or stroke) constituting the handwritten characters, and may change the size, position, or spacing of the handwritten characters.

As such, the processor 120 may arrange the handwritten characters by correcting the size, position, or spacing of the handwritten characters, and display the aligned handwritten characters on the screen of the display device 160 .

The display device 160 may display handwritten characters input by the user and may display handwritten characters corrected by the processor 120 . Also, the display device 160 may display handwritten characters to which various visual effects such as color, black and white, depth, or protrusion are applied to the handwriting input by the user.

As shown in FIG. 2 , the display device 160 may include a display 210 and a display driver integrated circuit (DDI) 230 for controlling the display 210 . The DDI 230 may include an interface module 231 , a memory 233 (eg, a buffer memory), an image processing module 235 , or a mapping module 237 . The DDI 230 transmits, for example, image data or image information including image control signals corresponding to commands for controlling the image data to other components of the electronic device 101 through the interface module 231. can be received from For example, according to an embodiment, the image information is the processor 120 (eg, the main processor 121 (eg, the application processor) of FIG. 1 or the image information of FIG. 1 operated independently of the function of the main processor 121). It may be received from the co-processor 123 (eg, a graphics processing unit).

The DDI 230 may communicate with the touch circuit 250 or the sensor module 176 through the interface module 231 . Also, the DDI 230 may store at least a portion of the received image information in the memory 233, for example, in units of frames.

The image processing module 235 pre-processes or post-processes at least a portion of the image data based on at least the characteristics of the image data or the characteristics of the display 210 (eg, resolution, brightness, or size adjustment). can be performed.

The mapping module 237 may generate a voltage value or a current value corresponding to the image data pre-processed or post-processed through the image processing module 235 . According to an embodiment, the generation of the voltage value or the current value depends at least on the properties of the pixels of the display 210 (eg, the arrangement of pixels (RGB stripe or pentile structure) or the size of each sub-pixel). It can be done on some basis. At least some pixels of the display 210 are driven at least partially based on the voltage value or current value, so that visual information (eg, text, image, or icon) corresponding to the image data is displayed on the display 210. can be displayed through

According to an embodiment, the display device 160 may further include a touch circuit 250. The touch circuit 250 may include a touch sensor 251 and a touch sensor IC 253 for controlling the touch sensor 251 . The touch sensor IC 253 may control the touch sensor 251 to detect, for example, a touch input or a hovering input to a specific location of the display 210 . For example, the touch sensor IC 253 may detect a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or charge amount) for a specific position of the display 210 . The touch sensor IC 253 may provide information (eg, location, area, pressure, or time) on the sensed touch input or hovering input to the processor 120 . According to an embodiment, at least a part of the touch circuit 250 (eg, the touch sensor IC 253) is disposed as a part of the display driver IC 230, a part of the display 210, or outside the display device 160. It may be included as part of other components (eg, the co-processor 123 of FIG. 1).

According to an embodiment, the display device 160 may further include at least one sensor (eg, a fingerprint sensor, an iris sensor, a pressure sensor, or an illumination sensor) of the sensor module 176 or a control circuit for the sensor module 176 . In this case, the at least one sensor or a control circuit thereof may be embedded in a part of the display device 160 (eg, the display 210 or the DDI 230) or a part of the touch circuit 250. For example, when the sensor module 176 embedded in the display device 160 includes a biometric sensor (eg, a fingerprint sensor), the biometric sensor is biometric information associated with a touch input through a partial area of the display 210. (e.g. fingerprint image) can be acquired. For another example, when the sensor module 176 embedded in the display device 160 includes a pressure sensor, the pressure sensor may acquire pressure information associated with a touch input through a part or the entire area of the display 210. can According to an embodiment, the touch sensor 251 or the sensor module 176 may be disposed between pixels of a pixel layer of the display 210 or above or below the pixel layer.

As described above, when the touch pad is configured as a touch screen by forming a layer structure, the display device 160 may be used as an input device as well as an output device.

According to an embodiment, as writing data is input using a pen input device that works with the electronic device 101 through the display device 160 or a user's finger, the processor 120 processes information about the writing data, such as letters. , paragraph, and sentence information can be checked using at least one of stroke speed, position, size, or path information for stroke along with a bitmap of handwriting data.

According to an embodiment, the processor 220 may perform recognition for contextual analysis of the handwritten data, and may control correction, editing, storage, and output of the handwritten data. The processor 120 may control the display device 160 to output the corrected and edited result on the screen of the display device 160 .

According to an embodiment, a font characteristic value of the recognized handwritten characters may be used to determine a criterion for correction (or alignment) of the handwritten characters, such as size, position, or spacing of the handwritten characters.

According to various embodiments of the present disclosure, in order to correct handwritten characters, font (font) metric information of font control groups serving as a standard for correction may be required. Here, the metric information may be previously stored in the memory 130 in the form of a table or database with values obtained through various fonts. Metric information may refer to a characteristic value of a font itself, not a font file. In general, a font file represents a data set with vector information that remembers the shape of a character appearing on the screen as a collection of each line segment or curve element that makes up the character, rather than a set of points, whereas the characteristic value for the font itself A metric commonly applied to all characters may be indicated. For example, a typeface is designed in a rectangular character area with a value between 1000 and 2048 as one side called em-square (or units per em), and the font properties are defined within the rectangular character area. If the values for the rectangular character area are used, the relative characteristic value in a specific font size can also be known.

According to an embodiment, if the processor 120 checks only some font characteristic values for handwritten characters corresponding to handwritten data, the shape of the font, for example, a design reference value indicating a rectangular area in which letters are placed without knowing the actual design. can know As described above, since the font file is a data set of a vector method, the electronic device 101 requires not only high resolution but also complex calculations, so the processing speed is slow, whereas the font characteristics according to various embodiments of the present invention Values can be efficient in terms of memory resources because they don't require the font file itself or information about each character.

According to various embodiments of the present invention, metric information collected through various fonts, for example, a plurality of reference font characteristic values may be corrected based on vertical characteristic values, and the memory 130 may include sizes of handwritten characters, A plurality of reference typeface characteristic values that are criteria for alignment, such as position or spacing, may be stored. In one embodiment, the electronic device 101 may download a new standard font or update a stored font through a server (eg, the server 108). Each of the standard typeface characteristic values may include at least one vertical characteristic value among cap height, x-height, and descender. Just as there are various handwriting types for each user, values such as cap height, x height, or descender may be different for each typeface. Characteristic values may vary according to the width or size of letters handwritten by the user even in the same typeface, for example, letters having the same shape.

If the fonts set in the system, for example, 'Times New Roman' and 'Arial' fonts, have the same cap height indicating the height of uppercase letters, x height indicating the height of lowercase letters, or descenders even though the shape of the letters is different. They may have the same typeface property values. As described above, each of the plurality of reference font characteristic values may refer to a reference value composed of at least one vertical characteristic value different from each other regardless of the shape of the font.

According to various embodiments of the present disclosure, the processor 120 determines which characteristic value of a plurality of characteristic values stored in the memory 130 corresponds to a characteristic value of a handwritten character recognized by handwriting data input by a user; Correction and/or alignment may be performed by changing at least a portion of the position, size, or spacing of handwritten characters based on the determined characteristic value.

The memory 130 may store instructions that, when executed, control the processor 120 to perform various operations.

According to various embodiments of the present disclosure, the electronic device 101 operates on a display (eg, the display device 160), a processor 120, and the display (eg, the display device 160) and the processor 120. and a memory 130 configured to store a plurality of reference font characteristic values, wherein the memory 130, when executed, causes the processor 120 to display the display (e.g., the display device 160). )), recognizing handwritten characters corresponding to the input handwriting data, checking font characteristic values for the recognized handwritten characters, and identifying the identified among the plurality of standard font characteristic values. Instructions for selecting a reference font characteristic value corresponding to the font characteristic value, correcting the handwritten characters based on the selected reference font characteristic value, and displaying them on the display (eg, the display device 160) may be stored.

According to an embodiment, the instructions cause the processor 120 to determine the location, size, spacing, or character width of the handwritten characters based on the location and size of a character area formed by the selected reference font characteristic value. It can be set to adjust at least one of them.

According to an embodiment, the checked typeface characteristic value may include a vertical characteristic value of at least one of a cap height, an x height, and a descender of the handwritten character.

According to an embodiment, the instructions may cause the processor 120 to determine at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of the plurality of reference font characteristic values. It may be set to compare at least some of the characteristic values.

According to an embodiment, the instructions set the processor 120 to select a reference font characteristic value having a characteristic value having the smallest difference from the checked font characteristic value among the plurality of reference font characteristic values. It can be.

According to an embodiment, the instructions set the processor 120 to determine a correction unit for the recognized handwritten characters, and to correct the inclination of the recognized handwritten characters with the identified correction unit. It can be. According to an embodiment, the correction unit may include at least one of a sentence unit, a stem unit, and a character unit.

According to an embodiment, the instructions may cause the processor 120 to correct the tilt of the recognized handwritten characters in the identified correction unit and then check the font characteristic values of the recognized handwritten characters. and may be set to adjust at least one of the position, size, letter spacing, or character width of the handwritten characters in the checked correction unit.

According to an embodiment, the instructions may, if the processor 120 receives a request for reverting in a state in which the corrected handwritten characters are displayed, a state before the corrected handwritten characters are displayed in response to the request for reverting, or It may be set to output a screen corresponding to a state before inputting the writing data to the display (eg, the display device 160).

3 is a perspective view of the front of an electronic device according to an exemplary embodiment. 4 is a perspective view of the back of the electronic device of FIG. 3;

Referring to FIGS. 3 and 4 , an electronic device 300 (eg, the electronic device 101 of FIGS. 1 and 2 ) according to an exemplary embodiment has a first surface (or front surface) 310A and a second surface. It may include a housing 310 including a (or back) 310B, and a side surface 310C surrounding a space between the first surface 310A and the second surface 310B. In another embodiment (not shown), the housing may refer to a structure forming some of the first surface 310A, the second surface 310B, and the side surface 310C of FIG. 3 . According to one embodiment, the first surface 310A may be formed by at least a portion of a substantially transparent front plate 302 (eg, a glass plate or a polymer plate including various coating layers). The second surface 310B may be formed by a substantially opaque back plate 311 . The rear plate 311 may be, for example, at least one of coated or tinted glass, ceramic, polymer, metal (eg, aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials. can be formed by The side surface 310C may be formed by a side bezel structure (or "side member") 318 coupled to the front plate 302 and the rear plate 311 and including metal and/or polymer. In some embodiments, the back plate 311 and the side bezel structure 318 may be integrally formed and include the same material (eg, a metal material such as aluminum).

In the illustrated embodiment, the front plate 302 includes two first regions 310D that are bent from the first surface 310A toward the back plate 311 and extend seamlessly, the front plate 310D. It can be included on both ends of the long edge of (302). In the illustrated embodiment (see FIG. 4 ), the back plate 311 has two second regions 310E that are curved and seamlessly extended from the second surface 310B toward the front plate 302 at long edges. Can be included at both ends. In some embodiments, the front plate 302 (or the rear plate 311) may include only one of the first regions 310D (or the second regions 310E). In another embodiment, some of the first regions 310D or the second regions 310E may not be included. In the above embodiments, when viewed from the side of the electronic device 300, the side bezel structure 318 has the first area 310D or the second area 310E as described above. 1 thickness (or width), and may have a second thickness thinner than the first thickness at a side surface including the first regions 310D or the second regions 310E.

According to an embodiment, the electronic device 300 includes a display 301, audio modules 303, 307, and 314, sensor modules 304, 316, and 319, camera modules 305, 312, and 313, and key input. At least one of the device 317, the light emitting element 306, the pen input device 320, and the connector holes 308 and 309 may be included. In some embodiments, the electronic device 300 may omit at least one of the components (eg, the key input device 317 or the light emitting device 306) or may additionally include other components.

The display 301 may be exposed through a substantial portion of the front plate 302, for example. In some embodiments, at least a portion of the display 301 may be exposed through the front plate 302 forming the first area 310D of the first surface 310A and the side surface 310C. In some embodiments, a corner of the display 301 may be substantially identical to an adjacent outer shape of the front plate 302 . In another embodiment (not shown), in order to expand the area where the display 301 is exposed, the distance between the periphery of the display 301 and the periphery of the front plate 302 may be substantially equal.

In another embodiment (not shown), a recess or an opening is formed in a part of the screen display area of the display 301, and the audio module 314, the sensor aligned with the recess or the opening At least one of the module 304 , the camera module 305 , and the light emitting device 306 may be included. In another embodiment (not shown), on the rear surface of the screen display area of the display 301, the audio module 314, the sensor module 304, the camera module 305, the fingerprint sensor 316, and the light emitting element 306 ) may include at least one of them. In another embodiment (not shown), the display 301 is combined with or adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and/or a digitizer detecting a magnetic stylus pen. can be placed. In some embodiments, at least a portion of the sensor modules 304 and 319 and/or at least a portion of the key input device 317 may be located in the first regions 310D and/or the second region 310E. can be placed in the field.

The audio modules 303 , 307 , and 314 may include microphone holes 303 and speaker holes 307 and 314 . A microphone for acquiring external sound may be disposed inside the microphone hole 303, and in some embodiments, a plurality of microphones may be disposed to detect the direction of sound. The speaker holes 307 and 314 may include an external speaker hole 307 and a receiver hole 314 for communication. In some embodiments, the speaker holes 307 and 314 and the microphone hole 303 may be implemented as one hole, or a speaker may be included without the speaker holes 307 and 314 (eg, a piezo speaker).

The sensor modules 304 , 316 , and 319 may generate electrical signals or data values corresponding to an internal operating state of the electronic device 300 or an external environmental state. The sensor modules 304, 316, and 319 may include, for example, a first sensor module 304 (eg, a proximity sensor) and/or a second sensor module (eg, a proximity sensor) disposed on the first surface 310A of the housing 310. (not shown) (eg, a fingerprint sensor), and/or a third sensor module 319 (eg, a heart rate monitoring (HRM) sensor) disposed on the second surface 310B of the housing 310 and/or 4 sensor module 316 (eg, a fingerprint sensor). The fingerprint sensor may be disposed on the first surface 310A (eg, the display 301 as well as the second surface 310B) of the housing 310. The electronic device 300 includes a sensor module, eg, not shown. For example, at least one of a gesture sensor, a gyro sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a bio sensor, a temperature sensor, a humidity sensor, or an illuminance sensor 304 may be further used. can include

The camera modules 305, 312, and 313 include a first camera device 305 disposed on the first surface 310A of the electronic device 300 and a second camera device 312 disposed on the second surface 310B. ), and/or flash 313. The camera devices 305 and 312 may include one or a plurality of lenses, an image sensor, and/or an image signal processor. The flash 313 may include, for example, a light emitting diode or a xenon lamp. In some embodiments, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one side of the electronic device 300 .

The key input device 317 may be disposed on the side surface 310C of the housing 310 . In another embodiment, the electronic device 300 may not include some or all of the above-mentioned key input devices 317, and the key input devices 317 that are not included may include soft keys on the display 301. It can be implemented in different forms. In some embodiments, the key input device may include a sensor module 316 disposed on the second surface 310B of the housing 310 .

The light emitting device 306 may be disposed on, for example, the first surface 310A of the housing 310 . The light emitting element 306 may provide, for example, state information of the electronic device 300 in the form of light. In another embodiment, the light emitting device 306 may provide, for example, a light source interlocked with the operation of the camera module 305 . The light emitting element 306 may include, for example, an LED, an IR LED, and a xenon lamp.

The connector holes 308 and 309 include a first connector hole 308 capable of receiving a connector (eg, a USB connector) for transmitting and receiving power and/or data to and from an external electronic device, and/or an external electronic device. and a second connector hole (eg, an earphone jack) 309 capable of accommodating a connector for transmitting and receiving an audio signal.

The pen input device 320 (eg, a stylus pen) is guided into the housing 310 through a hole 321 formed on a side surface of the housing 310 and can be inserted or detached, and can be easily detached. You can include a button to do so. A separate resonant circuit is built into the pen input device 320 and may be interlocked with an electromagnetic induction panel (eg, a digitizer) included in the electronic device 300 . The pen input device 320 may include an electro-magnetic resonance (EMR) method, an active electrical stylus (AES) method, and an electric coupled resonance (ECR) method.

5 is an exploded perspective view of the electronic device of FIG. 3 .

Referring to FIG. 5 , an electronic device 500 (eg, the electronic device 101 of FIGS. 1 and 2 ) includes a side bezel structure 510, a first support member 511 (eg, a bracket), and a front plate. 520, display 530, printed circuit board 540, battery 550, second support member 560 (eg rear case), antenna 570, rear plate 580, electromagnetic induction panel ( 590) and a pen input device 320. In some embodiments, the electronic device 500 may omit at least one of the components (eg, the first support member 511 or the second support member 560) or may additionally include other components. . At least one of the components of the electronic device 500 may be the same as or similar to at least one of the components of the electronic device 300 of FIG. 3 or 4 , and duplicate descriptions will be omitted below. In addition, although FIGS. 3 to 5 illustrate the appearance of the electronic device 101 of FIG. 1 , this is only an example, and the appearance of the electronic device may not be limited thereto.

The electromagnetic induction panel 590 (eg, a digitizer) may be a panel for sensing an input of the pen input device 320 . For example, the electromagnetic induction panel 590 may include a printed circuit board (PCB) (eg, a flexible printed circuit board (FPCB)) and a shielding sheet. The shielding sheet may prevent interference between components included in the electronic device 500 (eg, a display module, a printed circuit board, or an electromagnetic induction panel) due to electromagnetic fields generated from the components. The shielding sheet blocks electromagnetic fields generated from components, so that an input from the pen input device 320 is accurately transferred to a coil included in the electromagnetic induction panel 590 . The electromagnetic induction panel 590 according to various embodiments may include an opening formed in at least a partial area corresponding to a biometric sensor mounted on the electronic device 500 .

The first support member 511 may be disposed inside the electronic device 500 and connected to the side bezel structure 510 or integrally formed with the side bezel structure 510 . The first support member 511 may be formed of, for example, a metal material and/or a non-metal (eg, polymer) material. The display 530 may be coupled to one surface of the first support member 511 and the printed circuit board 540 may be coupled to the other surface. A processor, memory, and/or interface may be mounted on the printed circuit board 540 . The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor.

Memory may include, for example, volatile memory or non-volatile memory.

The interface may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and/or an audio interface. The interface may, for example, electrically or physically connect the electronic device 500 with an external electronic device, and may include a USB connector, an SD card/MMC connector, or an audio connector.

The battery 550 is a device for supplying power to at least one component of the electronic device 500, and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. . At least a portion of the battery 550 may be disposed on a substantially coplanar surface with the printed circuit board 540 , for example. The battery 550 may be integrally disposed inside the electronic device 500 or may be disposed detachably from the electronic device 500 .

The antenna 570 may be disposed between the rear plate 580 and the battery 550 . The antenna 570 may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna 570 may, for example, perform short-range communication with an external device or wirelessly transmit/receive power required for charging. In another embodiment, an antenna structure may be formed by a part of the side bezel structure 510 and/or the first support member 511 or a combination thereof.

6 is a flowchart 600 illustrating an operating method in an electronic device according to various embodiments of the present disclosure. The operation method may include operations 605 to 620. Each step/operation of the operating method may include at least one of an electronic device (eg, the electronic device 101 of FIGS. 1 and 2 ) and at least one processor (eg, the processor 120 of FIGS. 1 and 2 ) of the electronic device. In one embodiment, at least one of operations 605 to 620 may be omitted, the order of some operations may be changed, or another operation may be added.

The electronic device may receive handwriting data from a user through a display (eg, the display device 160 of FIGS. 1 and 2 ), and the writing data may be received by a pen input device (eg, the pen input device 320 ) interworking with the electronic device. )) or may be input using a user's finger.

In operation 605, the electronic device may recognize handwritten characters corresponding to the handwritten data input by the user. According to an embodiment, when recognizing handwriting data input through a display, the electronic device may store stroke information and location. The electronic device may recognize handwritten characters drawn by a user by using a recognition algorithm (or a recognition engine) based on stored stroke information and locations. For example, when a user directly writes a letter, since the letter is generally written in a cursive style, several strokes may be connected to form letters, so the electronic device needs to know what letter the writing data represents. To this end, the electronic device may identify whether or not the handwritten data is an actual letter by comparing a stroke drawn by the user with a unique stroke of the actual letter. For example, handwritten characters may be recognized by identifying and interpreting one or more strokes constituting handwritten data drawn by a user.

In operation 610, the electronic device may check font characteristic values of the recognized handwritten characters. According to an embodiment, the checked typeface characteristic value may include a vertical characteristic value of at least one of a cap height, an x height, and a descender of the handwritten character. In addition, the checked font characteristic values may be any value used to form a rectangular area for a font such as an ascender, in addition to the vertical characteristic values described above.

In operation 615, the electronic device may select a reference font characteristic value most similar to the checked font characteristic value from among a plurality of reference font characteristic values. According to an embodiment, the electronic device may compare at least a portion between at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of the plurality of reference font characteristic values. have.

For example, the electronic device may compare the cap height, x-height, and descender of the checked font characteristic value with the cap height, x-height, and descender included in each of the plurality of reference font characteristic values, respectively, but A part of the cap height, x-height, and descender of the set font characteristic value may be compared with only a part of the cap height, x-height, and descender included in each of the plurality of standard font characteristic values. For example, the electronic device may compare only a cap height and an x height, which are at least some of the plurality of font characteristic values.

According to an embodiment, the electronic device may select a reference font characteristic value having a characteristic value having the smallest difference from the confirmed font characteristic value among the plurality of reference font characteristic values. For example, if the cap height of the confirmed font feature value is 3.8, the X height is 4.2, and the descender is 2, the cap height has the smallest difference from 3.8 and the smallest difference from 4.2 among the plurality of standard font feature values. A reference font selection value having a font characteristic value that satisfies at least a part of an X height with a small difference and a descender with a smallest difference from 2 may be selected as a reference value corresponding to the checked font characteristic value.

In operation 620, the electronic device may correct the handwritten characters in the character area based on the selected reference font characteristic value. The character area is an area formed by characteristic values of the reference font, and may be, for example, an area created based on the size of the reference font and a reference line based on an average of input handwriting data. For example, the shape of the text area may be a rectangle enclosing handwritten characters having a reference line as one side. According to an embodiment, the electronic device controls to correct at least one of the position, size, spacing, and character width of the handwritten characters based on the location and size of the character area formed by the selected reference font characteristic value. can In this case, the corrected handwritten characters may be displayed on the screen of the display device 160 .

Meanwhile, when the handwritten characters are aligned in the character area corresponding to the reference font characteristic value, correction and/or alignment may be performed on the recognized handwritten character in a predetermined correction unit. For example, handwritten characters may be corrected in one correction unit among correction units such as a sentence unit, a word unit, or a character unit, which will be described in detail later.

A method for correcting handwriting input according to various embodiments of the present disclosure, when writing data is input through a display (eg, the display device 160) of an electronic device (eg, the electronic device 101 of FIGS. 1 and 2 ). , Recognizing handwritten characters corresponding to the input handwritten data, checking font characteristic values for the recognized handwritten characters, and selecting the identified font among a plurality of reference font characteristic values stored in the memory of the electronic device. An operation of selecting a reference font characteristic value corresponding to a font characteristic value and correcting the handwritten characters based on the selected reference font characteristic value, and converting the corrected handwritten characters into the electronic device (e.g., the electronic device of FIGS. 1 and 2). An operation of displaying on a display (eg, the display device 160) of the device 101 may be included.

According to an embodiment, the operation of correcting the handwritten characters may include at least one of the location, size, spacing, or character width of the handwritten characters based on the location and size of a character area formed by the selected reference font characteristic value. It may include an action to adjust one.

According to an embodiment, the checked typeface characteristic value may include at least one vertical characteristic value of a cap height, an x-height, or a descender of the handwritten character. can

According to an embodiment, the operation of selecting the reference font characteristic value includes at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of the plurality of reference font characteristic values. An operation of comparing at least some of the characteristic values may be included.

According to an embodiment, the operation of selecting the reference font characteristic value includes an operation of selecting a reference font characteristic value having a characteristic value having the smallest difference from the checked font characteristic value among the plurality of reference font characteristic values. can include

According to an embodiment, the method may further include an operation of identifying a correction unit for the recognized handwritten characters and an operation of correcting a slope of the recognized handwritten characters with the identified correction unit. .

According to an embodiment, the correction unit may include at least one of a sentence unit, a stem unit, and a character unit.

According to an exemplary embodiment, the correcting of the handwritten characters may include correcting a slope of the recognized handwritten characters in the identified correction unit and then checking a font characteristic value of the recognized handwritten characters; An operation of adjusting at least one of the position, size, letter spacing, or character width of the handwritten characters in the checked correction unit may be included.

According to an embodiment, in the method, when a request for reverting is received while the corrected handwritten characters are being displayed, the corrected handwritten characters are displayed in response to the reverting request or in a state before the handwritten data is input. An operation of displaying a corresponding screen on the display may be further included.

7 is a flowchart 700 illustrating a detailed operating method in an electronic device according to various embodiments of the present disclosure. 7 illustrates an operation method of detailed correction for handwritten characters in an electronic device, and the operation method may include operations 705 to 745. Each step/operation of the operating method may include at least one of an electronic device (eg, the electronic device 101 of FIGS. 1 and 2 ) and at least one processor (eg, the processor 120 of FIGS. 1 and 2 ) of the electronic device. In one embodiment, at least one of operations 705 to 745 may be omitted, the order of some operations may be changed, or another operation may be added.

In operation 705, the electronic device may receive writing data input from the user. The writing data may be input using a user's finger or a pen input device through a display of an electronic device.

In operation 710, the electronic device may recognize input writing data. The recognition operation is the same as operation 605 of FIG. 6 , and through the recognition operation, the electronic device may perform stroke classification on the recognized handwritten characters. For example, the electronic device may acquire information and position of the stroke by performing stroke classification such as the start of the stroke or the end of the stroke, and the handwriting input by the user based on the obtained information and position of the stroke. You can recognize which letter corresponds to. For example, an electronic device may recognize a single character by identifying and interpreting a stroke representing one or more strokes constituting a handwritten character. The stroke may be data representing a plurality of dots generated by user input until the user touches down, drags, and touches up the screen using a finger or a pen input device. According to an embodiment, the electronic device may recognize the handwritten character by obtaining coordinate values, for example, positions of pixels representing the handwritten character among pixels on the screen, and the method of recognizing the handwritten character may not be limited thereto. have.

In operation 720, the electronic device may check a correction unit designated (or specified) for correction of the recognized handwritten characters. The correction unit may include at least one of a sentence unit, a word unit, and a character unit. The word unit may be a correction unit based on spaces (or blanks). The sentence unit may be a correction unit based on a punctuation mark such as a period or cancellation of a handwriting input using a pen input device (eg, the pen input device 320). The character unit may be a correction unit based on one handwritten character.

In operation 725, the electronic device may correct the inclination of the recognized handwritten characters using the identified correction unit. Here, the tilt correction may correspond to correction of making the layout uniform when the position is disproportionately misaligned or the tilt is shifted according to words or letters. Accordingly, tilt correction may correspond to an operation of equalizing a tilt according to a predetermined correction unit, for example, a sentence unit, a word unit, or a character unit. For example, in the case of a sentence unit, the slope of the handwritten characters may be corrected so that the slope of an area surrounding the entire recognized handwritten character is aligned with the baseline based on the relative baseline. . For another example, in the case of a word unit, the words are separated based on the space between the handwritten letters, and each group of handwritten letters according to the separated words, for example, the gradient of the area surrounding the word is determined relative to the reference line. It is possible to correct the inclination of each bundle of handwritten characters by comparing with . In one embodiment, when a stroke is broken or the shape of the handwritten character is affected when the handwritten character is rotated for tilt correction, tilt correction may not be performed. Accordingly, the electronic device may consider whether to perform tilt correction by considering the stroke and shape of handwritten characters when performing tilt correction.

In operation 730, the electronic device may check font characteristic values of the recognized handwritten characters. The operation of checking the font characteristic value is an operation of identifying the user's handwriting characteristics, and the font for the recognized handwriting characters is calculated by calculating the cap height, x height, or descender of the handwritten characters in the correction unit based on the reference line. Characteristic values can be set. According to an embodiment, the electronic device corrects the inclination of the recognized handwritten characters in the identified correction unit, and then checks the font characteristic values of the recognized handwritten characters. At least one of the position, size, letter spacing, or character width of the handwritten characters may be adjusted. In this case, the electronic device may determine a standard font characteristic value for adjusting the position and size of the handwritten characters, and the reference font characteristic value may be determined corresponding to the identified font characteristic value.

In operation 735, the electronic device may select a reference font characteristic value most similar to the checked font characteristic value from among a plurality of reference font characteristic values. According to an embodiment, the electronic device may compare at least a portion of a plurality of vertical characteristic values included in the checked font characteristic values with a plurality of vertical characteristic values included in each of the plurality of reference font characteristic values. Also, according to an embodiment, the electronic device may select a reference font characteristic value having a characteristic value having the smallest difference from the confirmed font characteristic value among the plurality of reference font characteristic values.

In operation 740, the electronic device may correct handwritten characters based on the selected reference font characteristic value. According to an embodiment, the electronic device may align at least one of the position, size, spacing, and character width of the handwritten characters based on the location and size of the character area formed by the selected reference font characteristic value. . In the above, the case of correcting the inclination of the handwritten characters in a correction unit and then correcting at least one of the position, size, spacing, or character width of the handwritten characters has been described, but the handwritten characters are based on the correction unit. Correction of aligning the inclination, position, size, character spacing, or character width of the characters may be performed simultaneously or in any order.

In operation 745, the electronic device may display corrected handwritten characters. For example, the handwritten characters may be arranged to be included in a rectangular character area formed by the selected reference typeface characteristic values, and the size of the handwritten characters may be adjusted to have the size of the rectangular character area. Therefore, in the case of character-by-character correction, handwritten characters may be arranged and displayed in accordance with the size of each character area in each of the rectangular character areas formed by the selected reference font characteristic values. Accordingly, according to various embodiments of the present invention, handwritten characters may be arranged to fit each character area formed by the selected standard font characteristic value while maximally maintaining the cursive character input by the user. Therefore, from the user's point of view, even if handwritten data whose top and bottom, letter spacing, or size is non-uniform based on the line is input, it is possible to see neatly aligned handwritten letters arranged in a more uniform size and position through correction.

According to one embodiment, the correction operation may be performed in real time or in batches. For example, in the case of real-time correction, input handwritten characters may be corrected whenever a user touches down, drags, or touches up the screen using a finger or a pen input device. For example, when the correction unit is a word unit, some handwritten characters may be displayed in real time whenever correction for the word unit is performed on the input window of the screen.

According to one embodiment, in the case of batch correction, only the handwriting actually drawn is displayed even if the user is writing, and no handwritten characters are displayed in the input window of the screen, but the handwritten characters corrected through batch correction are displayed. It could be. Here, collective correction may be performed by various ending operations, such as when a user inputs a sign such as a period in a sentence or inputs indicating completion of handwriting input.

8 is an exemplary diagram 800 for explaining font characteristic values according to various embodiments of the present disclosure.

Referring to FIG. 8 , a cap height 810 represents the height of a capital letter and may mean a distance from a base line of a base of a capital letter to a cap line of the capital letter.

The x-height 815 represents the height of the lowercase letter 'x', and is the distance from the base line 820 to the mean line of the lowercase letter x. Since it coincides with the baseline, it can be used as a reference. X-height indicates the height of the entire body of a character or the height of an important element in the shape of a character, and the size of X-height may vary depending on the typeface even in a typeface with the same point.

Descender (or descender height) 825 represents the part where the lowercase letter itself protrudes below the horizontal line in the syntactic type, and it is the five letters of g, j, p, q, and y may have a descender. Depending on the typeface, the length of the descender is different, but it can be used by creating a virtual descender line on the bottom edge.

In addition to the above, an ascender (or ascender height) 805 represents a column stem that rises above the x height of a lowercase alphabetic character, for example, x, such as b, d, h, or l. The upper part of the lowercase letter extending upward than the height may correspond.

In one embodiment, there may be some letters that need to be treated as exceptions when extracting font feature values. Although the characteristics of fonts vary widely among individuals, some characters tend to have more individual characteristics, so exceptions can be made for some characters.

For example, in the case of Latin, there are cases where the lower strokes of 'Q' and 'R' are written to protrude. In this case, the cap height may not be considered. In addition, in the case of 'i', the height of the entire body of the character exceeds the x-height in most cases, so the x-height may not be considered. In addition, 't' and 'f' are one of the letters that are drawn very differently for each individual, and in the case of 'f', when written in cursive, it is drawn down to the descender position in most cases, so it is an exceptional character. can be considered as Although English has been described as an example in the foregoing, the present invention may not be limited thereto. For example, various languages such as Korean, Chinese, Latin or Russian may also be applied.

According to one embodiment, in the case of multiple languages, an ideographic position may be extracted as a feature. The extracted features may include at least one of top, center, and bottom. For example, in the case of Latin, letters are grouped into 'head', 'tummies', or 'tails', and the top or bottom is extracted for each group to be used as a font characteristic value. can In addition, in the case of Korean (Korean), it can be grouped into a group of 'initial consonant + neutral' or 'initial consonant + neutral + support'. Also in Arabic, 'ascender', 'loop height', 'tooth height', or 'descender 1', 'descender 2' )'. As described above, after grouping handwritten characters for each language, the top or bottom of each group can be extracted and used as font characteristics.

9 is an exemplary view 900 for explaining standard font characteristic values according to various embodiments of the present disclosure.

9 illustrates a plurality of reference font characteristic values stored in a memory (eg, the memories 130 and 230). As shown in FIG. 9 , characteristic values obtained through various fonts may be stored in memory in advance in the form of tables or databases 910 , 920 , 930 , 940 , and 950 .

According to various embodiments of the present invention, not a font image file is stored in a memory (eg, the memories 130 and 230), but reference font characteristic values 915, 925, 935, 945, and 955 that are characteristics of the font itself. ) can be stored. For example, each of the standard typeface characteristic values 915, 925, 935, 945, and 955 is at least one vertical characteristic value of a cap height, an x-height, or a descender. can include Here, the reference font characteristic values are reference values for arranging handwritten characters handwritten by the user, and based on the area and size of the character formed by the reference font characteristic value, the handwritten characters are determined based on the area and size of the character. can be placed accordingly.

For example, a typeface is designed in a rectangular character area with a value between 1000 and 2048 as one side called em-square (or units per em), and the font properties are defined within the rectangular character area. If the values for the rectangular character area are used, the relative characteristic value in a specific font size can also be known. Therefore, if the electronic device checks only some font characteristic values for handwritten characters corresponding to the handwritten data among a plurality of reference font characteristic values stored in a memory (eg, the memory 130), the shape of the font, for example, the actual design You can determine the design standard value representing the rectangular area where the characters are placed without knowing the .

According to various embodiments of the present invention, a plurality of reference font characteristic values collected through various fonts may be aligned based on vertical characteristic values, and a memory (eg, the memory 130) may include the size, position, and location of handwritten characters. Alternatively, a plurality of reference font characteristic values that are standards for alignment between letters may be stored. Just as there are various handwriting types for each user, values such as cap height, x height, or descender may be different for each typeface. Characteristic values may vary according to the width or size of letters handwritten by the user even in the same typeface, for example, letters having the same shape.

As shown in FIG. 9 , in the case of the first reference font characteristic value 915, even if the thickness, shape, or design of the first font 911 and the second font 912 are different, the cap height representing the height of the capital letter When 4, the X height representing the height of a lowercase letter is 4, and the descender is 2, this may correspond to the first reference typeface characteristic value 915. Similarly, in the case of the second standard font characteristic value 925, the case where vertical characteristic values are the same regardless of the shapes of the third font 921 and the fourth font 922 is exemplified, and each standard font characteristic value 935 , 945 and 955) can belong to different typefaces (931, 932, 941, 942, 951 and 952) regardless of thickness, shape and design.

As described above, each of the plurality of reference font characteristic values may refer to a reference value composed of at least one vertical characteristic value different from each other regardless of the shape of the font.

On the other hand, according to various embodiments of the present invention, the handwriting of the user may be maintained even after the handwriting recognized in response to the user's handwriting input is corrected, but as shown in FIG. 9 , the criterion corresponding to the user's handwriting When a font characteristic value is determined, it may be set to be replaced with a shape of another font belonging to the standard font characteristic value. For example, if the handwriting input by the user is similar to the first font 911, it may be changed to the second font 912 through correction and displayed.

To this end, a method using system font rendering may be used. The font rendering method is a method that can be applied when there is authority to access the font renderer of the system, and the electronic device uses the position and size information corrected with the stroke and typeface characteristic values obtained in the upper correction step to determine the font used by the system. Character data can be obtained. Here, the information on the text data may include path data, maximum advance width (advance x/y), size and position of the text, and may also include additional information.

In an electronic device, when text is drawn by transferring generated character data to a font renderer of a system, a separate component for handwriting rendering is not required and various effects provided by the system can be applied. For example, if the character stroke set in the system has a specific weight and is set thick or thin, it can be applied to handwritten characters as well, and gamma correction can also be applied to the same value as the text view. . Accordingly, font effects such as shadows and protrusions can also be used.

10 is an exemplary diagram for explaining a method of correcting the inclination of handwritten characters according to various embodiments of the present disclosure.

As shown in FIG. 10 , in the case of a handwritten character 1005 input by a user, the location may be disproportionately misaligned or the inclination may be off according to words or characters. In this case, the electronic device may perform correction to make the layout uniform through tilt correction. According to an embodiment, the tilt correction may correspond to an operation of equalizing the tilt according to a predetermined correction unit, for example, a sentence unit, a word unit, or a letter unit. In FIG. ) is illustrated.

For example, in the case of a sentence unit, the slope of the handwritten characters may be corrected so that the slope of an area surrounding the entire recognized handwritten character is aligned with the baseline based on the relative baseline. . Similarly, in the case of word units, words are separated based on the space between the handwritten letters, and each group of handwritten letters according to the separated words, for example, the slope of the area surrounding the word is compared with the relative reference line The tilt of each group of letters can be corrected.

11 is an exemplary diagram for explaining a method of checking font characteristic values for handwritten characters according to various embodiments of the present disclosure.

When tilt correction is performed on the handwritten characters in a predetermined correction unit, handwritten characters 1110 whose tilt is corrected based on the reference line 1115 can be obtained as shown in FIG. 11 . At this time, the electronic device may determine the font characteristic values of the handwritten characters 1110 whose slant is corrected, including a cap height 1105 indicating the height of uppercase letters and an x height 1110 indicating the height of lowercase letters, as well as a descender. can be checked. As described above, when vertical characteristic values such as cap height 1105 or x height 1110 for the handwritten characters in the correction unit are checked based on the reference line 1115, a standard typeface is selected for the checked vertical characteristic value. It may be determined whether the characteristic values match. 12 may be referred to for a detailed description of this.

12 is an exemplary diagram for explaining a selection method for standard font characteristic values according to various embodiments of the present disclosure. As shown in FIG. 12 , when it is determined that the cap height of the font characteristic value 1205 for the handwritten character 1200 is 3.8, the X height is 4.2, and the descender is 2, a plurality of standard font characteristic values 1210 , 1215, 1220, 1225, and 1230, a reference font characteristic value 1210 having the smallest difference from the font characteristic value 1205 for the handwritten character 1200 may be selected.

13A and 13B are exemplary diagrams for explaining a correction method for each correction unit for handwritten characters according to various embodiments of the present disclosure.

13A illustrates a method of correcting handwritten characters for each correction unit. In an embodiment, in the case of correction for each word unit, a correction unit for handwritten characters based on spaces (or blanks) between each handwritten character ( 1306, 1307, and 1308) can be determined. Accordingly, when correction is performed on the handwritten characters 1305 before word correction, the handwritten characters 1310 aligned with respect to the reference line may be displayed on the screen.

In another embodiment, in the case of character-by-character correction, correction is performed based on each of the handwritten characters 1316 to 1326, and when correction is performed on the handwritten characters 1315 before character-by-character correction, The aligned handwritten characters 1320 may be displayed on the screen. Since the handwritten letters are handwritten by the user, the size, letter spacing, arrangement, or line spacing of each letter may not be constant. As shown in FIG. It is possible to display handwritten characters that are neatly aligned while maintaining the user's handwriting as much as possible by arranging the spacing or vertical position. In the case of handwriting input, there may be cases in which letters are continuously written in addition to cursive writing. Taking the handwritten characters 1315 before character-by-character correction as an example, if the user writes 'h' 1317 and 'e' 1318 without interruption, the electronic device recognizes 'he' through a recognition operation. Since a situation in which the letters 'h' and 'e' are not recognized may occur, correction accuracy in word units may be higher than correction accuracy in letter units.

In another embodiment, as shown in FIG. 13B, not only the position and size of the handwritten characters 1330 but also the inclination may be corrected. For example, in the case of the letters 'the' (1331) and 'quick' (1332) drawn by the user, the sizes of the two words 'the' (1331) and 'quick' (1332) are different. As in 'the quick' (1340), the size may be adjusted, and the scaled handwritten characters may be displayed on the screen. In addition, in the case of 'the' (1331), since the slope of the area surrounding 'the' (1331) is tilted compared to the relative baseline, after correcting the slope for 'the' (1331), the 'the' (1331) and Correction such as position and size of 'quick' 1332 may be performed.

According to an embodiment, the size of the two words may be adjusted based on the upper and lower sizes of the character area formed by the checked font characteristic values. In a similar way, not only the size of the two words but also the position can be corrected. Here, before adjusting the size or position of the handwritten character, correction for the inclination must first be performed so that the reference line for determining the position and size of the letter area can be determined.

As such, even if the size or position of the two words is adjusted, the user's handwriting is maintained, so that handwritten letters arranged more neatly can be effectively shown to the user. In the foregoing, the case of adjusting the inclination, position, and/or size of handwritten characters has been described as an example, but the spacing and width of handwritten characters may also be adjusted.

14 is an exemplary screen view according to correction of input handwritten characters according to various embodiments of the present disclosure. Referring to FIG. 14 , a screen according to execution of an application related to handwriting input or sketching is illustrated. The first screen 1405 illustrates a case where there is no line in the handwriting input screen, and when a handwritten character 1411 is input by the user as in the second screen 1410, the third screen 1415 is displayed through correction. In , the handwritten characters 1416 aligned in inclination, position, or size of the handwritten characters may be displayed.

15 is an exemplary screen view according to correction of handwritten characters input through an input window according to various embodiments of the present disclosure. Referring to FIG. 15 , when an application related to writing input or sketching is executed, a first screen 1505 before handwriting input may be displayed. The first screen 1505 illustrates a case where a separate handwriting input window 1508 is displayed and a block 1507 serving as a cursor indicating a position where handwritten characters are to be displayed is displayed on the display area.

As in the second screen 1510, when the user inputs the handwritten character 1511 through the handwriting input window 1508, the corrected handwritten character 1512 may be displayed in the display area. Even if the size and vertical position of handwritten letters input through the handwriting input window 1508 are not uniform, the size and vertical position of handwritten letters may be aligned and displayed through correction.

Although the above-mentioned second screen 1510 exemplifies a case in which the size and vertical position of handwritten characters are aligned, it can be aligned by adjusting various factors such as inclination, letter spacing, each character width, and line spacing, and the third screen ( 1515) exemplifies the case of size and tilt correction.

For example, as in the third screen 1515, the slope of the handwritten character 1513 input by the user through the handwriting input window 1508, or the size or slope of the handwritten character through correction even if the size is not uniform The aligned and corrected handwritten characters 1514 may be displayed in the display area. 14 and 15 illustrate a case where the handwriting of the handwritten character input by the user is maintained as much as possible and the size, letter spacing, vertical position, or tilt is corrected, but the brightness, roughness, and stroke thickness determined by the system through font rendering Handwritten characters applied with various effects such as , style application, or font effect application may be displayed.

16 is a flowchart 1600 for explaining a method of correcting and returning handwritten characters according to various embodiments of the present disclosure. The operation method may include operations 1605 to 1645. Each step/operation of the operating method may include at least one of an electronic device (eg, the electronic device 101 of FIG. 1 or 2 ) and at least one processor (eg, the processor 120 of FIG. 1 or 2 ) of the electronic device. can be done by one. In one embodiment, at least one of operations 1605 to 1645 may be omitted, the order of some operations may be changed, or another operation may be added.

Referring to FIG. 16 , the user may use undo to cancel the correction of the handwriting input or use undo to cancel writing of the handwriting input itself. If the correction for handwriting input is canceled, both the data of the handwriting input after correction and the data of the handwriting input before correction must be temporarily stored, and at the same time, corresponding history data is also required. Twice as much history data may be required compared to the case without it. In addition, if you want to return the handwriting input itself to the beginning, for example, if you want to cancel the writing itself, the user must select undo twice, and the electronic device must perform an operation based on the undo selection twice, so unnecessary Resource consumption may occur.

According to various embodiments of the present disclosure, all correction data except for the most recent correction data, for example, the last correction data, may be deleted from the correction history in order to minimize resource consumption according to operation. According to an embodiment, only one or N most recent correction histories can be stored, and the number of histories can be set as a fixed variable in the system.

Referring to FIG. 16 to explain this in detail, in operation 1605, the electronic device may determine whether writing data is input. If writing data is input, in operation 1610, the electronic device may store a history of the input writing data.

In operation 1615, the electronic device may perform correction after recognizing handwritten characters corresponding to the input handwritten data. Here, since each function in operations 1605 to 1615 is the same as operations 605 to 620 of FIG. 6 or operations 705 to 745 of FIG. 7 , a detailed description thereof will be omitted.

In operation 1620, the electronic device may determine whether there are two or more pieces of history data according to correction. For example, when a user touches down, drags, and touches up the screen using a finger or a pen input device once, handwritten characters may be corrected. Accordingly, when such an operation is repeated, handwritten characters corrected sequentially may be displayed, and accordingly, two or more pieces of history data according to correction may be provided. For example, correction may be performed on a character-by-letter basis whenever the user writes one character at a time, and correspondingly, corrected handwritten characters on a character-by-letter basis may be sequentially displayed.

In an embodiment, when there are two or more pieces of history data according to correction, the electronic device may delete remaining history data except for the last piece of history data in operation 1625. According to an embodiment, the remaining history data may be deleted so that only one piece of history data remains, for example, the last piece of history data. However, if there is a number of pieces of history data determined by the system (eg, N pieces), the remaining pieces of history data except for N pieces of history data may be present. You can also delete historical data.

On the other hand, when there is not two or more history data according to correction, for example, when there is no history data according to correction, since there is no data to be deleted, it may be determined in operation 1630 whether an undo request is input. An undo request may be referred to as, for example, an undo request or an undo request.

If a return request is input, in operation 1635, the electronic device may determine whether there is history data according to correction. If there is no history data according to the correction, in operation 1645, it is possible to return to before handwriting input. On the other hand, if there is history data according to the correction, in operation 1640, a return to the pre-correction state may be performed. 17 may be referred to for a detailed description of this.

17 is an exemplary view of a screen according to correction and recovery of handwritten characters according to various embodiments of the present disclosure. 17 illustrates a screen according to execution of an application related to handwriting input or sketching. The first screen 1705 illustrates a case in which handwritten characters 1707 corrected in response to a handwriting input are displayed, and when the user selects an item 1706 corresponding to undo, the second screen 1710 As such, the handwritten characters 1711 before correction may be displayed. Also, when the user selects the item 1706 corresponding to undo twice, as in the third screen 1715, a screen having a blank area 1716 before handwriting input may be displayed. At this time, the second screen 1710 to the third screen 1715 may be sequentially changed to the screen according to the revert operation in response to the number of revert requests, but otherwise, the first screen 1705 directly to the third screen ( 1715) may be changed.

As described above, the first undo operation after writing the handwriting can operate as correction cancellation for a correction unit (eg, sentence unit, word unit, or character unit), and the next undo operation can operate as a cancellation for the handwriting itself. can In addition, subsequent undo operations operate in the same manner as described above up to 1 to N numbers set in the system, and 1 to N and subsequent undo operations may operate as undo operations for the handwriting input itself.

Meanwhile, in the foregoing, in response to the input of a return request for the corrected handwritten characters, the case where the handwritten characters before correction or the screen before the first handwritten input is displayed has been described, but the reverse itself, contrary to the request for reverting, is displayed. can be canceled. Cancellation of redo may refer to cases such as redo or redo recovery, and when a request for canceling redo is input, the handwritten input may be restored or the handwritten character may be corrected. For example, in the case of canceling undo, it can be restored sequentially in the order of restoration of handwriting input to restoration of correction by the number of undo cancellations set based on the most recently input handwriting data, and a recovery screen corresponding to this can be displayed. have.

Electronic devices according to various embodiments disclosed in this document may be devices of various types. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. An electronic device according to an embodiment of this document is not limited to the aforementioned devices.

Various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C" and "A, Each of the phrases such as "at least one of B or C" may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "secondary" may simply be used to distinguish a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited. A (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "module" used in this document may include a unit implemented by hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document describe one or more commands stored in a storage medium (eg, the internal memory 136 or the external memory 138) readable by a machine (eg, the electronic device 101). It may be implemented as software (eg, the program 140) including them. For example, a processor (eg, the processor 120) of a device (eg, the electronic device 101) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

According to one embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities.

According to various embodiments, each component (eg, module or program) of the components described above may include a singular object or a plurality of entities. According to various embodiments, one or more components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by modules, programs, or other components are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations are executed in a different order, omitted, or , or one or more other operations may be added.

According to various embodiments of the present disclosure, in a storage medium storing instructions and storing a plurality of reference font characteristic values, the instructions cause the at least one processor to perform at least one operation when executed by at least one processor. As set, the at least one operation is performed when writing data is input through a display (eg, the display device 160) of an electronic device (eg, the electronic device 101 of FIGS. 1 and 2 ). An operation of recognizing handwritten characters corresponding to , an operation of checking font characteristic values for the recognized handwritten characters, and selecting a reference font characteristic value corresponding to the checked font characteristic value among the plurality of reference font characteristic values. and correcting at least one of the position, size, letter spacing, or character width of the handwritten characters based on the selected reference font characteristic value, and displaying the corrected handwritten characters on the display (e.g., the display device 160). It may include an action to display. According to an embodiment, the operation of correcting the handwritten characters may include at least one of the location, size, spacing, or character width of the handwritten characters based on the location and size of a character area formed by the selected reference font characteristic value. It may include an action to adjust one.

In addition, the embodiments of the present invention described in the present specification and drawings are only presented as specific examples to easily explain the technical content according to the embodiments of the present invention and help understanding of the embodiments of the present invention, and the scope of the embodiments of the present invention is not intended to limit Therefore, the scope of various embodiments of the present invention should be construed as including all changes or modified forms derived based on the technical spirit of various embodiments of the present invention in addition to the embodiments disclosed herein are included in the scope of various embodiments of the present invention. .

101: electronic device, 120: processor, 130: memory, 150: input device, 160: display device, 190: communication module

Claims (20)

In electronic devices,
display;
processor; and
a memory operatively connected to the display and the processor and configured to store a plurality of reference font characteristic values;
The memory, when executed, the processor,
When handwriting data is input through the display, handwritten characters corresponding to the input handwriting data are recognized;
Checking a font characteristic value including at least one vertical characteristic value among a cap height, an x-height, and a descender for the recognized handwritten characters;
comparing at least a part between at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of the plurality of reference font characteristic values;
Based on the comparison result, selecting a reference font characteristic value having a characteristic value having the smallest difference from the identified font characteristic value among the plurality of reference font characteristic values;
An electronic device that stores instructions for correcting the handwritten characters based on the selected reference font characteristic value and displaying them on the display.
The method of claim 1, wherein the instructions, the processor,
The electronic device configured to adjust at least one of the position, size, spacing, and character width of the handwritten characters based on the location and size of the character area formed by the selected reference font characteristic value.
delete delete delete The method of claim 1, wherein the instructions, the processor,
It is set to check a correction unit for the recognized handwritten characters, and correct the inclination of the recognized handwritten characters with the checked correction unit;
After correcting the inclination of the recognized handwritten characters in the identified correction unit, the font characteristic values of the recognized handwritten characters are checked, and the position, size, and spacing of the handwritten characters in the identified correction unit. , or set to adjust at least one of the character widths,
The correction unit includes at least one of a sentence unit, a stem unit, or a character unit.
delete delete The method of claim 1, wherein the instructions, the processor,
When a request for reverting is received while the corrected handwritten characters are displayed, a screen corresponding to a state before displaying the corrected handwritten characters or a state before inputting the handwritten data is output to the display in response to the request for reverting. electronic device.
A method for correcting handwriting input in an electronic device,
recognizing handwritten characters corresponding to the input handwriting data when writing data is input through the display of the electronic device;
checking a font characteristic value including at least one vertical characteristic value among a cap height, an x-height, and a descender of the recognized handwritten characters;
comparing at least a part between at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of a plurality of reference font characteristic values stored in a memory of the electronic device;
based on the comparison result, selecting a reference font characteristic value having a characteristic value having the smallest difference from the identified font characteristic value among the plurality of reference font characteristic values; and
and correcting the handwritten characters based on the selected reference font characteristic value and displaying the corrected handwritten characters on a display of the electronic device.
11. The method of claim 10, wherein the correcting of the handwritten characters comprises:
and adjusting at least one of the position, size, spacing, and character width of the handwritten characters based on the location and size of the character area formed by the selected reference font characteristic value.
delete delete delete According to claim 10,
checking a correction unit for the recognized handwritten characters; and
Further comprising correcting the inclination of the recognized handwritten characters in the identified correction unit,
The correction unit includes at least one of a sentence unit, a stem unit, and a character unit.
delete The method of claim 15, wherein the correcting of the handwritten characters comprises:
verifying font characteristic values of the recognized handwritten characters after correcting the inclination of the recognized handwritten characters in the identified correction unit; and
and adjusting at least one of a position, size, letter spacing, or character width of the handwritten characters in the checked correction unit.
According to claim 10,
If a return request is received while the corrected handwritten characters are displayed, displaying a screen corresponding to a state before displaying the corrected handwritten characters or a state before inputting the handwritten data in response to the return request on the display. A correction method for handwriting input further comprising a.
A storage medium storing instructions and storing a plurality of reference font characteristic values, the instructions being configured to cause the at least one processor to perform at least one operation when executed by the at least one processor, wherein the at least one the action of
recognizing handwritten characters corresponding to the input handwriting data when writing data is input through a display of an electronic device;
checking a font characteristic value including at least one vertical characteristic value among a cap height, an x-height, and a descender of the recognized handwritten characters;
comparing at least a part between at least one vertical characteristic value included in the checked font characteristic value and at least one vertical characteristic value included in each of the plurality of reference font characteristic values;
based on the comparison result, selecting a reference font characteristic value having a characteristic value having the smallest difference from the identified font characteristic value among the plurality of reference font characteristic values; and
and correcting at least one of a position, size, spacing, or character width of the handwritten characters based on the selected reference font characteristic value, and displaying the corrected handwritten characters on the display. delete

Images