WO2012030020A1

WO2012030020A1 - Touch screen apparatus for the blind, and method for recognizing electronic documents using a skip navigation method therefor

Info

Publication number: WO2012030020A1
Application number: PCT/KR2010/007752
Authority: WO
Inventors: 박건; 박영숙
Original assignee: (주) 에스엔아이솔라; 주식회사 에이티랩
Priority date: 2010-08-31
Filing date: 2010-11-04
Publication date: 2012-03-08
Also published as: KR101084285B1

Abstract

The present invention relates to a touch screen apparatus for the blind, and to a method for recognizing electronic documents using a skip navigation method therefor. The touch screen comprises: a touch input unit having a certain number of lattices of the same size disposed adjacent to each other, wherein each lattice is formed as a touch position; a document format conversion unit for converting a format of a document according to a lattice structure of the touch input unit and disposing characters of the document at the touch position of the touch input, and mapping and then storing the characters with a serial number of each touch position; a touch-sensing unit for determining a touch position and a touch time when a touch by a user is sensed in the touch position; a character recognition unit recognizing all of the serial numbers and mapped characters of the touch position in a certain row or recognizing characters mapped to the serial numbers of the touch positions on the basis of the touch position and touch time provided by the touch-sensing unit; an audio synthesis processing unit converting the characters recognized by the character recognition unit into audio data using a text to speech (TTS) engine; and an audio output unit outputting the audio data converted by the audio synthesis processing unit. Therefore, according to the present invention, the blind can easily obtain information by searching for a document in various forms such as word or sentence units using the touch screen apparatus.

Description

Touch screen device for the visually impaired and an electronic document recognition method using skip navigation method in the device

The present invention relates to a touch screen device for the visually impaired, and a method for recognizing an electronic document using a skip navigation method in the device, and more particularly, converts a document format according to a grid structure of a touch input unit, After placing and displaying each number in the touch position of the touch input unit while mapping and storing the serial number and the corresponding letter of each touch position, and when the touch position contact by the user is detected, the position and contact time information of the touch position touched are displayed. The visually impaired person converts and outputs the characters mapped to the serial number of the entire touch position on the line or the characters mapped to the serial number of the touched position by using a text-to-speech engine. Touch screen device for mobile and using skip navigation method in the device It relates how the document recognition.

The full touch type touch screen device adopts a touch screen input method that touches a character or a specific location on the screen instead of a keyboard input method, and is currently used in various fields such as computer devices, mobile communication terminals, kiosk terminals, and car AV systems. It is used a lot.

In addition, ATM (Automated Teller Machine) devices for cash withdrawal, computer equipment for guidance in public places, etc. are mostly adopting the touch screen input method.

One of the most accessible ways for the visually impaired is the iPhone's VOICE OVER. The full touch type touch screen device outputs a voice when an object displayed on the screen is focused with a finger, and requires an accidental operation through a random operation to a visually impaired person who cannot predict the position and direction of the object.

However, the full touch type touch screen device as described above has a disadvantage in that it cannot be read while moving in units of words or sentences when outputting a document by voice.

In addition, since the touch screen of the touch screen device has an invalid area such as space between lines and space between lines, stable touch is difficult.

The present invention has been made to solve the above problems, an object of the present invention is to visually facilitate the acquisition of information by searching the document in a variety of formats, such as words or sentences, when the visually impaired person using the touch screen device The present invention provides a touch screen device for a disabled person and an electronic document recognition method using a skip navigation method.

According to an aspect of the present invention to achieve the above object, a certain number of grids of the same size are arranged adjacent to each other, each grid is a touch input formed of a touch position, the format of the document according to the grid structure of the touch input A document format converting unit for converting and storing the characters in the document in the touch positions of the touch input unit and mapping and storing the serial numbers of the respective touch positions and the corresponding characters, when the touch position contact by the user is detected. A touch sensor for determining the position and touch time information of the touch position, and the position and touch time information from the touch sensor. On the basis of this, a character recognition unit for recognizing characters mapped to the serial number of the entire touch position in the line or the character mapped with the serial number of the touched position, a text-to-speech character recognized by the character recognition unit Provided is a touch screen device for a visually impaired person, including a speech synthesis processor for converting speech data into a text data using a Text to Speech (TTS) engine and a speech output unit for outputting speech data converted from the speech synthesis processor.

The touch screen device may further include a lattice structure guide that guides the lattice structure of the touch input unit by voice when power is turned on.

The touch input unit may be a full touch type touch screen.

The document format conversion unit converts the format of the document selected by the user to correspond to the grid structure of the touch input unit, and arranges each character in the document in the touch position of the touch input unit.

The character recognition unit determines a serial number of the touch position by using the position of the touch position.

When the up, down, left, and right movements of the touch pointer detected by the touch sensing unit are within a predetermined time, the character recognition unit skips a document corresponding to the position according to the up, down, left, and right movements.

The character recognition unit recognizes a character mapped with a serial number of the specific touch position when the touch pointer moves up, down, left, and right for a predetermined time or more, and the touch pointer is touched with a specific touch position for a predetermined time. If no contact is made, the character mapped with the serial number of the specific touch position is skipped.

In addition, the character recognition unit recognizes the characters mapped to the serial number of the entire touch position on the line when the location is within a predetermined range and the contact time is more than a predetermined time, the location is outside the range and the If the contact time is longer than a predetermined time, the remaining characters of the line are recognized from the character mapped with the serial number of the corresponding touch position. Here, the predetermined range may be from a first position touch position of each line to a predetermined number of touch positions sequentially.

In addition, when the touch position touched by the user is a blank text object and the contact time is more than a predetermined time, a text message or a tone indicating a blank is output.

In addition, the text recognition unit outputs a voice message indicating that there are no more sentences when the touch pointer is moved up, down, left, and right while contacting a touch position filled with a blank for a predetermined time or more.

In addition, the character recognition unit determines whether the next page exists when the last line contact of the current page is detected while moving the touch pointer up, down, left, and right, and if the next page exists, a voice message or a tone indicating 'next page' If the next page does not exist, a voice message or a tone indicating 'end of document' is output.

In addition, the character recognition unit is a predetermined predetermined position in the touch position positioned in the predetermined range of the predetermined line from the last line of the current page, while the touch pointer sequentially touches the touch position located within the predetermined range of each line. When contacting for more than a time, the document format conversion unit requests a document format conversion of a next page, and when the touch pointer touches a touch position located within a predetermined range of the last line, it means 'next page'. Allow voice messages or tones to be output.

In this case, the document format conversion unit converts the format of the document corresponding to the next page according to the document format conversion request from the character recognition unit.

The grids of the touch input unit are consistently developed according to a predetermined rule, and each grid is adjacent to each other so that no invalid area exists.

According to another aspect of the present invention, in a method for recognizing a document using a touch screen device for the visually impaired, (a) converting the format of the document according to the grid structure of the touch input unit, and touches the characters in the document Mapping and storing the serial number of each touch position and the corresponding letter while placing and displaying each touch position in the input unit; and (b) when touch position contact by the user is detected, position and contact time information of the touch position touched. To (C) determining the location and contact time information determined in step (b). On the basis of the step, recognizing the characters mapped to the serial number of the entire touch position in the line or the character mapped to the serial number of the touched position, (d) text-to-speech the recognized character There is provided an electronic document recognition method using a skip navigation method in a touch screen device for the visually impaired, which includes converting into voice data using an engine and (e) outputting the converted voice data.

The electronic document recognition method using the skip navigation method in the touch screen device for the visually impaired may further include outputting a grid structure of the touch screen as a voice when power-on is performed before step (a). .

In the step (c), if the location is in a predetermined range of a predetermined range and the contact time is more than a predetermined time, the characters mapped to the serial number of the entire touch position on the corresponding line are recognized, and the location is specified. If the contact time is out of the area and the contact time is more than a predetermined time, the remaining characters of the line are recognized from the character mapped with the serial number of the corresponding touch position.

In addition, in the step (c), when the touch pointer by the user moves up, down, left and right and contacts a specific touch position for a predetermined time or more, a character mapped with the serial number of the specific touch position is recognized, and the touch pointer is If a specific touch position has not been touched for a predetermined time or more, the character mapped to the serial number of the specific touch position is skipped.

As described above, according to the present invention, when the visually impaired person uses the touch screen device, information can be easily acquired by searching the document in various formats such as word or sentence unit.

In addition, it is possible to secure the usability and accessibility of the visually impaired to all information processing devices that use the full touch method, and to add us to secure the usability of the visually impaired by utilizing the full touch usage without additional physical additional devices. The cost is reduced.

1 is a block diagram schematically showing the configuration of a touch screen device for the visually impaired according to the present invention.

2 is an exemplary view for explaining a method of recognizing an electronic document using a skip navigation method in a touch screen device for the visually impaired according to the present invention.

3 is a flowchart illustrating an electronic document recognition method using a skip navigation method in a touch screen device for the visually impaired according to the present invention.

100: touch screen device 102: touch input unit

104: document format conversion unit 106: contact detection unit

107: character recognition unit 108: speech synthesis processing unit

110: audio output unit

1 is a block diagram schematically showing the configuration of a touch screen device for the visually impaired according to the present invention, and FIG. 2 illustrates a method for recognizing an electronic document using a skip navigation method in the touch screen device for the visually impaired according to the present invention. It is an illustration for.

Referring to FIG. 1, the touch screen device 100 for the visually impaired includes a touch input unit 102, a document format converter 104, a touch sensor 106, a character recognizer 107, and a speech synthesis processor 108. ), And a voice output unit 110.

The touch input unit 102 has a predetermined number of gratings of the same size disposed adjacent to each other, and each grating has a touch position. Each touch position may be assigned one or more characters included in the document selected by the user.

In addition, the touch input unit 102 may be set to a touch position without an invalid area according to a predetermined arrangement rule, and the user may touch (touch) and touch (touch) states of the touch input unit 102 using a touch pointer such as a finger. To move documents up, down, left, and right, and release them (non-contact, release). The arrangement rule may be configured in various ways such as an arrangement structure in which a total of 50 touch positions of 10 by 5 are arranged, an arrangement structure in which a total of 50 touch positions of 5 by 10 are arranged, and the like.

The touch position of the touch input unit 102 will be described with reference to an arrangement of '10 by 5 'as an example. The touch input unit 102 is divided into a screen section of 10 by 5, which means a partition like a checkerboard, and the scale means 10 columns horizontally and 5 columns vertically. In this case, the divided screen partitions mean only a touch range, and the shape of the grid is not actually displayed on the screen. That is, the touch partition of '10 by 5 'has a total of 50 touch positions.

As described above, the objects displayed on the touch screen in the full touch-type touch screen device 100 are arranged with a predetermined rule in the entire process until performing for one use purpose, and the objects are adjacent to each other by the arrangement. Therefore, the invalid area does not exist by being displayed over the entire screen area. Here, the object means a character.

In addition, the touch input unit 102 is synchronized with the touch screen output unit. That is, when the user touches / releases the touch screen output unit with a finger, the touch input unit 102 is activated.

The document format converting unit 104 converts the format of the document according to the lattice structure of the touch input unit 102, and arranges the characters in the document at the touch positions of the touch input unit 102, respectively. Map and save the number and the corresponding character.

That is, the document format conversion unit 104 converts the format of the document selected by the user to correspond to the grid structure of the touch input unit, so that each character in the document is arranged on the grid of the touch input unit.

In other words, the document format changer 104 displays a character object in a document to be searched at each touch position of the touch input unit 102, and one touch position is assigned a character object of Korean or more than one character.

In this case, the text object has a blank character object, and the words are divided and displayed. When the number of characters is exceeded in the set of the character object composed of one page (one screen), the document format converter 104 converts the page to a page. The function (operation) fills each touch position of the new page.

In addition, if the number of characters is insufficient in the set of character objects composed of one page, the document format converter 104 fills the remaining empty touch positions with an object of 'empty'.

When the touch position contact by the user is detected, the touch detector 106 determines the position and contact time information of the touch position touched. That is, the touch detector 106 obtains a position of the touched position and transmits the position and contact time information to the character recognition unit 107.

The character recognition unit 107 receives position and contact time information from the touch detection unit 106. On the basis of this, the characters mapped to the serial number of the entire touch position in the line or the characters mapped to the serial number of the touched position are recognized. In this case, the character recognition unit 107 determines the serial number of the touch position by using the position of the touch position.

In addition, the character recognition unit 107 skips the document corresponding to the position according to the up, down, left, and right movements when the up, down, left, and right movements of the touch pointer detected by the touch sensing unit 106 are within a predetermined time. skip).

That is, when the user moves the touch pointer up, down, left, or right, and contacts a specific touch position for a predetermined time or more, the character recognition unit 107 recognizes a character mapped with the serial number of the specific touch position, and the touch pointer If the specific touch position does not touch for a predetermined time or more, the character mapped to the serial number of the specific touch position is skipped.

In addition, when the position from the touch sensor 106 is within a predetermined range and the contact time is longer than a predetermined time, the character recognition unit 107 may be configured to map the characters mapped to the serial numbers of the entire touch positions in the corresponding line. To be recognized.

In addition, when the position from the touch sensor 106 is out of the range and the contact time is longer than a predetermined time, the character recognition unit 107 starts from the character mapped with the serial number of the corresponding touch position. The remaining characters will be recognized.

Here, the predetermined range may be from a first position touch position of each line to a predetermined number of touch positions sequentially.

In addition, when the touch position contacted by the user is a blank text object and the contact time is more than a predetermined time, the text recognition unit 107 outputs a voice message or a tone indicating a blank.

In addition, when the user moves the touch pointer up, down, left, or right while contacting the touch position filled with a blank for a predetermined time or more, the text recognition unit 107 may generate a voice message indicating 'no more sentences'. To be printed.

In addition, when the user touches the last line of the current page while moving the touch pointer up, down, left, or right, the character recognition unit 107 determines whether the next page exists and means 'next page' when the next page exists. A voice message or a beep is outputted, and if a next page does not exist, a voice message or a beep means 'end of document' is output.

Also, the character recognition unit 107 sequentially touches touch positions positioned within a predetermined range of each line, while the touch pointer is positioned within a predetermined range of a predetermined line from the last line of the current page. In case of contacting the user for more than a predetermined time, the document format conversion unit 104 requests the document format conversion of the next page, and when the touch pointer touches a touch position located within a predetermined column of the last line. A voice message or a tone indicating 'next page' is output. Here, the predetermined range of cells may range from the first space to the third space.

In this case, the document format conversion unit 104 converts the format of the document corresponding to the next page according to the document format conversion request from the speech synthesis processing unit 108.

That is, when the touch pointer is in contact with the third line, the second line, and the last line in the third previous line from the last line of the current page, a voice message or a beep sound of 'next page' is output, and then the next page automatically. Is filled with character objects.

For example, a description will be given of a case where

lines

1, 10, and 10 are touched in order in which page 1 is in units of 10 lines.

When the touch pointer touches the first column of the eighth line for a predetermined time or more, the character recognition unit 107 requests the document format conversion unit 104 to convert the format of the document corresponding to the next page. do.

This means that if the user passes through lines 8, 9, and 10 in sequence, the touch screen device 100 determines that the user intends to move to the next page, and automatically generates the next page.

The speech synthesis processing unit 108 converts the characters recognized by the text recognition unit 107 into speech data using a text to speech (TTS) engine.

That is, the speech synthesis processor 108 converts the characters mapped to the serial numbers of the entire touch positions in the specific line recognized by the character recognition unit 107 or the characters mapped to the serial numbers of the specific touch positions into voice data. Convert.

The voice output unit 110 outputs the voice data converted by the voice synthesis processing unit 108 and refers to a speaker or the like.

The touch screen device 100 for the visually impaired according to the present invention may further include a grid structure guide (not shown) for guiding the grid structure of the touch screen by voice when power is turned on.

That is, when the lattice structure is 10 by 5, the lattice structure guide part outputs a guide voice of '10 by 5 structure '. Then, the user recognizes the touch area and the size of the screen through the guide voice.

The touch screen device 100 as described above refers to a computer, a mobile communication terminal, and the like.

A method of recognizing a document using the touch screen device 100 configured as described above will be described with reference to FIG. 2.

Referring to FIG. 2, the touch position of the touch input unit 102 is configured by a grid of '10 by 5 ', and 50 characters are displayed per page.

For each line, the area 202 corresponding to the first space touch position to the third space touch position is a designated area. When the user touches a touch position in the designated area 202 using a touch pointer, the character recognition unit 107 recognizes the characters mapped to the serial number of the entire touch position on the line. Then, the speech synthesis processing unit 108 converts the characters recognized by the text recognition unit 107 into voice data and outputs them.

For example, when the user touches the touch position of '206' for a predetermined time or more, the character recognition unit 107 is a character mapped to the entire serial number of the touch position of the line with '206', that is, "mounted". One screen ".

In addition, when a user passes a predetermined time or more in a state where the user touches the touch position of '204', the text recognition unit 107 recognizes that the text mapped to '204' is a blank object and the voice output unit Through 110, a voice message or a tone indicating a blank is output.

In addition, if the user exceeds a predetermined time in contact with a touch position of '208', the text recognition unit 107 outputs a voice message indicating 'no more sentences'.

In addition, when the user touches the touch position of '206' while moving the touch pointer up, down, left, or right, the character recognition unit 107 determines whether the next page exists, and if the next page exists, the next page exists. It outputs a voice message or a beep sound. Then, the document format conversion unit 104 causes the next page as shown in (b) to be displayed.

In addition, when the user passes a predetermined time or more in a state in which the user touches the touch position of '212', the text recognition unit 107 outputs a voice message indicating 'no more sentences'.

Referring to FIG. 3, the touch screen device converts a format of a document according to a grid structure of a touch input unit, and displays characters in the document at each touch position of the touch input unit while displaying the serial numbers of the touch positions and the corresponding characters. Map and store (S300).

That is, the touch screen device outputs a voice to the grid structure of the touch screen when the user turns on the power. For example, when the grid structure is '3 by 4', the touch screen device outputs a guide voice of '3 by 4 structure'. The user recognizes the touch area of the screen and its size through the guide voice.

Then, the touch screen device parses the document selected by the user, converts the format of the document according to the grid structure of the touch input unit, and arranges one or more characters in each touch position (grid) of the touch input unit. do.

After performing the S300, when the touch position contact is detected by the user (S302), the touch screen device determines the position and contact time information of the touch position (S304).

After performing the step S304, the touch screen device determines whether the position is included in a predetermined designated area (S306).

If it is included in the predetermined designated area as a result of the determination in S306, the touch screen device determines whether the contact time is longer than a predetermined predetermined time (S308).

As a result of the determination in S308, if the touch screen device is longer than a predetermined time, the touch screen device recognizes the characters mapped to the serial number of the entire touch position on the line where the touch position is located (S310).

Thereafter, the touch screen device converts the recognized characters into voice data and outputs them (S312).

If the determination result of S308 is not more than a predetermined time, the touch screen device skips the corresponding content (S314).

If the determination result in step S306 is not included in the predetermined designated area, the touch screen device determines whether the contact time is longer than a predetermined time (S316).

If the determination result of the S316 is more than a predetermined time, the touch screen device recognizes the remaining characters of the line from the character mapped with the serial number of the touch position (S318), and the recognized character as voice data The output is converted (S320).

If the determination result in step S316 is not longer than a predetermined time, the touch screen device skips the corresponding content (S322).

On the other hand, it will be understood by those skilled in the art that the present invention may be implemented in other modified forms without changing the essential technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative, and the scope of the present invention should be construed as including all changes or modifications derived from the description of the claims and their equivalents.

Claims

A predetermined number of grids having the same size are disposed adjacent to each other, and each grid includes a touch input unit formed as a touch position;

A document format conversion unit for converting a format of a document according to a grid structure of the touch input unit and mapping and storing the characters in the document at touch positions of the touch input unit and mapping serial numbers and corresponding characters of each touch position;

A touch sensing unit configured to determine the position and the contact time information of the touch position when the touch position contact by the user is detected;

Location and contact time information from the contact sensing unit. A character recognition unit for recognizing characters mapped to serial numbers of entire touch positions in the corresponding line or characters mapped to serial numbers of the touched positions;

A speech synthesis processing unit converting the text recognized by the text recognition unit into speech data using a text-to-speech engine; And

A voice output unit configured to output voice data converted by the voice synthesis processor;

Touch screen device for the visually impaired comprising a.
The method of claim 1,

When performing the power on (on), the touch screen device for the visually impaired further comprises a grid structure guide for guiding the grid structure of the touch input unit by voice.
The method of claim 1,

The touch input unit is a touch screen device for the visually impaired, characterized in that the full touch type touch screen.
The method of claim 1,

The character recognition unit is a touch screen device for the visually impaired, characterized in that for determining the serial number of the touch position using the position of the touch position.
The method of claim 1,

The character recognition unit skips a character corresponding to a position according to the movement of the up, down, left, or right movements when the up, down, left, and right movements of the touch pointer detected by the touch sensing unit are within a predetermined time. Touch screen device for computer.
The method of claim 1,

The character recognition unit recognizes a character mapped with a serial number of the specific touch position when the touch pointer moves up, down, left, and right for a predetermined time or more, and the touch pointer contacts the specific touch position for a predetermined time or more. If not, the touch screen device for the visually impaired, characterized in that for skipping the character mapped to the serial number of the specific touch position.
The method of claim 1,

The character recognition unit recognizes the characters mapped to the serial number of the entire touch position on the line when the position is within a predetermined range and the contact time is more than a predetermined time,

If the location is out of the range and the contact time is more than a predetermined time, the touch screen device for the visually impaired, characterized in that the remaining characters of the line from the character mapped to the serial number of the corresponding touch position is recognized.
The method of claim 7, wherein

The predetermined range is a touch screen device for the visually impaired, characterized in that from the first space touch position of each row to a predetermined number of touch positions sequentially.
The method of claim 1,

The text recognition unit is a touch screen device for the visually impaired, characterized in that if the touch position touched by the user is a blank text object and the contact time is more than a predetermined time, to output a voice message or a tone indicating a blank.
The method of claim 1,

The text recognition unit is a touch for the visually impaired to output a voice message that means that there is no more sentences when the touch position is moved to the touch position filled with the blank while moving the touch pointer up, down, left and right for a predetermined time or more. Screen device.
The method of claim 1,

The text recognition unit determines whether the next page exists when the last line contact of the current page is detected while moving the touch pointer up, down, left, and right, and if a next page exists, a voice message or a tone indicating 'next page' is output. And, if the next page does not exist, the touch screen device for the visually impaired to output a voice message or a signal that means 'end of the document'.
The method of claim 11,

The character recognition unit sequentially touches a touch position located within a predetermined range of each line while the touch pointer is positioned within a predetermined range of a predetermined line above the last line of the current page, for a predetermined time or more. If the contact is requested, the document format conversion unit requests the document format conversion of the next page, and when the touch pointer touches a touch position located within a predetermined column of the last line, a voice message means 'next page'. Or a touch screen device for the visually impaired, characterized in that the signal to be output.
The method of claim 12,

The document format converting unit converts a format of a document corresponding to a next page according to a request for converting a document format from the character recognition unit.
The method of claim 1,

The grid of the touch input unit is unfolded consistently according to a predetermined rule, each grid is adjacent to the touch screen device for the visually impaired, characterized in that there is no invalid area.
In the method for recognizing a document using a touch screen device for the visually impaired,

(a) converting the format of the selected document to correspond to the lattice structure of the touch input unit, and placing and displaying the characters in the document in the touch positions of the touch input unit while mapping and storing the serial numbers of the respective touch positions and the corresponding characters. step;

(b) When touch position contact is detected by the user, the position and contact time information of the touch position touched are displayed. Determining;

(c) location and contact time information determined in step (b); Based on the above, recognizing characters mapped to the serial number of the entire touch position in the corresponding line or characters mapped to the serial number of the touched position;

(d) converting the recognized text into speech data using a text-to-speech engine; And

(e) outputting the converted speech data;

Electronic document recognition method using a skip navigation method in a touch screen device for the visually impaired.
The method of claim 15,

Before the step (a), if the power-on is performed, the electronic document recognition method using a skip navigation method in the touch screen device for the visually impaired further comprising the step of outputting a voice of the grid structure of the touch screen.
The method of claim 15,

Step (c) is,

When the location is in a predetermined range of a predetermined range and the contact time is more than a predetermined time, recognize the characters mapped to the serial number of the entire touch position on the line,

When the location is outside the designated area and the contact time is more than a predetermined time, skipping in the touch screen device for the visually impaired, wherein the remaining characters of the line are recognized from the letter mapped with the serial number of the corresponding touch position. Electronic document recognition method using navigation method.
The method of claim 15,

Step (c) is,

When the touch pointer by the user moves up, down, left, and right and contacts a specific touch position for a predetermined time or more, a character mapped with the serial number of the specific touch position is recognized.

When the touch pointer has not touched a specific touch position for a predetermined time or more, an electronic document recognition method using a skip navigation method in a touch screen device for the visually impaired may skip a character mapped with a serial number of the specific touch position. .