JP6776924B2 - Text display device, text display method, and program - Google Patents

Description

The present invention relates to a text display device, a text display method, and a program, and more particularly to a technique for displaying text such as an electronic book.

In recent years, electronic readers (text display devices) that display digitized text data such as electronic books on the display screens of personal computers and portable information terminals have become widespread. And in order to improve the efficiency of reading sentences, the display method of sentence data has been improved. For example, Patent Document 1 includes a text display device that displays line breaks in units that maximize the number of characters and arranges character strings on each line in a staircase pattern so that the text can be read efficiently. It is disclosed.

Japanese Unexamined Patent Publication No. 2014-142905

However, since there are individual differences in how difficult it is to read, the above-mentioned arrangement of character strings is not always the display method that all readers find easy to read. It is desirable for an electronic reader to display sentences in an appropriate display format that is easy for each reader to read.

The present invention has been made in view of such problems, and an object of the present invention is to provide a text display device, a text display method, and a program capable of improving reading efficiency.

The first invention for solving the above-mentioned problems includes a display unit for displaying a sentence and a data acquisition unit for acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader who reads the displayed sentence. A determination unit that determines the difficulty of reading the sentence based on the line-of-sight movement data, and a display conversion unit that changes the display form of the sentence based on the determination result by the determination unit . It is a sentence display device characterized in that it is determined based on the number of times of reading back, which is a movement of the line of sight in a direction different from the traveling direction of the sentence, and which has a short line-of-sight movement distance .

According to the first invention, the determination unit determines the difficulty of reading the sentence based on the line-of-sight movement data measured while the reader is browsing the displayed sentence, and the display form of the sentence is based on the determination result. To change. Therefore, even if the reader does not change the display form, the text is displayed in an appropriate display form that is easy to read, and the reading efficiency can be improved. In particular, the eye movements observed during reading can be evaluated from the moving direction of the line of sight and the moving distance of the line of sight, and can be judged as difficulty in reading.

In the first invention, it is desirable that the determination unit determines the difficulty in reading by distinguishing between the movement of the line of sight due to the line feed and the movement of the line of sight due to the difficulty in reading. Further, it is desirable that the determination unit determines the difficulty in reading by excluding short sentences and movement of the line of sight when turning pages. As a result, the difficulty of reading can be accurately determined.

It is desirable that the line-of-sight movement data be measured by an electro-oculography sensor that detects the movement of the eyeball. This makes it possible to easily measure the movement of the line of sight and evaluate the difficulty of reading.

The second invention is based on a display unit for displaying a sentence, a data acquisition unit for acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader reading the displayed sentence, and the line-of-sight movement data. A determination unit for determining the difficulty of reading a sentence and a display conversion unit for changing the display form of the sentence based on the determination result by the determination unit are provided, and the change in the display form is based on a semantic unity of the sentence. It is a text display device characterized by changing the layout of the segment divided by the above or periodically changing the segment unit. The change in the display form may further include the contrast between the characters and the background, or may further include the change in the font size.
According to the second invention, the determination unit determines the difficulty of reading the sentence based on the line-of-sight movement data measured while the reader is browsing the displayed sentence, and the display form of the sentence is based on the determination result. To change. Therefore, even if the reader does not change the display form, the text is displayed in an appropriate display form that is easy to read, and the reading efficiency can be improved. In particular, the reader can easily move the stop position of the central visual field for each segment, which is a semantic group, and can improve the reading efficiency.

It is desirable that the acquisition of the line-of-sight movement data by the data acquisition unit and the determination of the difficulty of reading by the determination unit are repeated during the display of the text. This makes it possible to change the display form to an easy-to-read display form in real time based on the line-of-sight movement data measured while the reader is browsing the text.

It is desirable that the determination unit calculates an index value for determining the difficulty of reading, and the display conversion unit selects and switches an appropriate display mode from a plurality of display modes according to the index value. .. As a result, it is possible to change to an appropriate display form according to the degree of difficulty in reading.

In the third invention, the control unit of the computer has a step of displaying a sentence, a step of acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader who reads the displayed sentence, and the line-of-sight movement data. determining a reading Zura of the sentence on the basis of the determination and the result to change the display form of the text on the basis of the step, only it contains the read Zura of the line of sight to a direction different from the traveling direction of the text It is a sentence display method characterized in that it is determined based on the number of times of reading back, which is a movement, and the line-of-sight movement distance is short .
A fourth aspect of the present invention is a step in which a computer control unit displays a sentence, a step of acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader who reads the displayed sentence, and the line-of-sight movement data. Including a step of determining the difficulty of reading the sentence based on the above and a step of changing the display form of the sentence based on the determination result, the change of the display form is a segment obtained by dividing the sentence based on a semantic unity. It is a sentence display method characterized by changing the layout of the above or periodically changing the segment unit.

According to the third and fourth inventions, the control unit of the computer determines the difficulty of reading the sentence based on the line-of-sight movement data measured while the reader is browsing the displayed sentence, and based on the determination result. Change the display format of sentences. Therefore, even if the reader does not change the display form, the text is displayed in an appropriate display form that is easy to read, and the reading efficiency can be improved. According to the third invention, in particular, the eye movement observed during reading can be evaluated from the moving direction of the line of sight and the moving distance of the line of sight, and can be determined as difficulty in reading. Further, according to the fourth invention, in particular, the reader can easily move the stop position of the central visual field for each segment which is a semantic group, and can improve the reading efficiency.

A fifth invention comprises a display means for displaying a sentence, a data acquisition means for acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader who reads the displayed sentence, and the line-of-sight movement data. determination means for reading Zura of the sentence on the basis of, a program to function as a display conversion unit, for changing the display form of the text, based on a determination result of said determining means, said reading Zura of Is a program characterized in that a determination is made based on the number of times of reading back, which is a movement of the line of sight in a direction different from the traveling direction of a sentence, which has a short line of sight movement distance .
A sixth invention comprises a display means for displaying a sentence, a data acquisition means for acquiring line-of-sight movement data which is measurement data of the line-of-sight movement of a reader who reads the displayed sentence, and the line-of-sight movement data. A program for functioning as a determination means for determining the difficulty of reading the sentence based on the above and a display conversion means for changing the display form of the sentence based on the determination result by the determination means. The change is a program characterized by a layout change of a segment obtained by dividing a sentence based on a semantic unity or a periodic change in the segment unit.

According to the fifth and sixth inventions, the computer can function as the text display device of the first and second inventions.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a text display device, a text display method, and a program capable of improving reading efficiency.

The figure which shows the appearance of the text display apparatus 1 and the example of the apparatus configuration. Block diagram showing the internal configuration of the text display device 1 Block diagram showing the functional configuration of the text display device 1 Sequence diagram showing the flow of text display in the present invention The figure which shows an example of the switching of the display form

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an example of the appearance and device configuration of the text display device 1, and FIG. 2 is a block diagram showing an internal configuration of the text display device 1. The configurations shown in FIGS. 1 and 2 are examples, and various configurations can be adopted depending on the intended use and purpose.

As shown in FIG. 1, the text display device 1 is a terminal provided with a display 41 for displaying text data, and is, for example, a personal computer, a tablet-type information communication terminal device, a smartphone, an electronic book reader, or the like. The text display device 1 has a reader function for displaying text data described in a predetermined format such as EPUB (epub) on the display 41. The text display device 1 is communicated and connected with a measuring device 20 that measures the movement of the line of sight of the reader who is viewing the text data. The communication connection between the text display device 1 and the measuring instrument 20 may be wired or wireless.

The measuring device 20 is a device for measuring the movement of the line of sight of the reader, and for example, an electro-oculography sensor is used. The electrooculogram sensor is a device that measures the potential difference (called electrooculogram) around the eye due to eye movement, and can measure the movement of the line of sight, blinking, and the like. By measuring the electrooculogram while viewing a sentence, it is possible to obtain eye movement data. The measuring instrument 20 shown in FIG. 1 represents an example of the measuring instrument 20 in which the electro-oculography sensor is mounted on the nose pad and the bridge of the glasses, but the shape of the measuring instrument 20 is not limited to the eyeglass type. The mounting site of the electrooculogram sensor is not limited to the above-mentioned site. Further, the measuring device 20 may be any device as long as it can measure the movement of the line of sight of the reader during reading. For example, it is also possible to measure the line-of-sight movement data by photographing the movement of the pupil using a camera or the like built in or externally attached to the text display device 1 and analyzing the photographed image data. The measuring device 20 transmits the measured line-of-sight movement data (line-of-sight movement direction and movement distance) to the control unit 11 of the text display device 1.

As shown in FIG. 2, the text display device 1 includes a control unit 11, a storage unit 12, a media input / output unit 13, a communication control unit 14, an input unit 15, a display unit 16, a peripheral device I / F unit 17, and the like. It is connected via bus 18. The measuring instrument 20 is connected via the peripheral device I / F unit 17.

The control unit 11 is composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU calls and executes a program stored in the storage unit 12, ROM, recording medium, etc. in the work memory area on the RAM, drives and controls each device connected via the bus 18, and the text display device 1 Realize the processing to be performed later. The ROM is a non-volatile memory, and permanently holds a computer boot program, a program such as a BIOS, data, and the like. The RAM is a volatile memory, and includes a work area used by the control unit 11 to perform various processes while temporarily holding programs, data, etc. loaded from the storage unit 12, ROM, recording medium, and the like.

The storage unit 12 is an HDD (Hard Disk Drive), a flash memory, or the like, and stores a program executed by the control unit 11, data necessary for program execution, an OS (Operating System), and the like. As for the program, a reader application (hereinafter referred to as "reader application") for a user to browse an electronic book (document data) and an application program for causing a computer to execute a process described later are stored. Each of these program codes is read by the control unit 11 as necessary, transferred to the RAM, read by the CPU, and executed as various means. Further, the storage unit 12 stores the text data of the electronic book in association with the identification information. In addition, the storage unit 12 stores dictionary data for morphological analysis used by the reader application, layout information necessary for changing the display form, and the like.

The text data stored in the storage unit 12 may be downloaded from a server device (not shown) or the like that can be accessed by the communication control unit 14 via a network or the like, or may be a recording medium (not shown) via the media input / output unit 13. It may be read from a USB memory, CD-ROM, DVD-ROM, etc.), or it may be text data input from the input unit 15.

The media input / output unit 13 is an interface with a recording medium (media) such as a USB memory, a CD, or a DVD, and inputs / outputs (reads / writes) data recorded on the recording medium.

The communication control unit 14 has a communication control device, a communication port, etc., and is a communication interface that mediates communication between a computer (text display device 1) and a network, and controls communication with other computers, etc. via the network. Do. The network can be wired or wireless.

The input unit 15 includes an input device integrated with the display unit 16, such as a touch panel display, and operation buttons such as a power button and a display switching button. The input unit 15 transmits the data input via the input device and the pressing signal of the operation button to the control unit 11.

The display unit 16 includes a display 41 such as a liquid crystal panel, a logic circuit for realizing a video function of a computer in cooperation with the display 41, and displays display data such as text data on the display 41 according to instructions of the control unit 11. To do.

The peripheral device I / F (Interface) unit 17 is a port for connecting peripheral devices, and the control unit 11 transmits / receives data to / from the peripheral device via the peripheral device I / F unit 17. The peripheral device I / F unit 17 is configured by USB (Universal Serial Bus) or the like. The connection form with peripheral devices may be wired or wireless. The bus 18 is a route that mediates the transfer of control signals, data signals, and the like between the devices.

Next, the functional configuration of the text display device 1 according to the present invention will be described with reference to FIG.

As shown in FIG. 3, the text display device 1 includes a display unit 16, a data acquisition unit 31, a readability determination unit 32, and a display conversion unit 33.
The display unit 16 displays text data. Although the method of displaying the text will be described later, the display unit 16 displays the text data on the display 41 in the display form designated by the control unit 11 (display conversion unit 33).

The data acquisition unit 31 acquires data obtained by measuring the movement of the line of sight of the reader reading the text displayed on the display 41 (hereinafter, the measurement data of the movement of the line of sight is referred to as “line-of-sight movement data”) from the measuring device 20.

The readability determination unit 32 determines the readability of the text displayed on the display 41 based on the line-of-sight movement data acquired by the data acquisition unit 31. The human visual field is composed of a high-resolution central visual field and a low-resolution peripheral visual field around it, but since high resolution is required for character recognition, the text is read while moving the central visual field. I will proceed. The state of gaze that recognizes characters in the central visual field is called saccade, and the eye movement that accompanies the movement to the next stop is called saccade. The eye movements of the person reading the text are repeated saccades and saccades. When people find it difficult to read, the number of small movements of the line of sight in the direction opposite to the direction in which the characters are arranged (the direction in which the text progresses) increases. Therefore, the difficulty-reading determination unit 32 counts the number of line-of-sight movements in a direction different from the traveling direction of the sentence (for example, the opposite direction) as the number of read-backs from the measured line-of-sight movement data, and based on the number of read-backs. To judge the difficulty of reading.

Further, the difficulty-reading determination unit 32 may determine the difficulty of reading based on the number of times of reading back with a short line-of-sight movement distance.

The difficulty-reading determination unit 32 determines the difficulty of reading by distinguishing between the movement of the line of sight due to the line feed and the movement of the line of sight (readback) caused by the difficulty of reading. Further, when determining the difficulty of reading, the difficulty-reading determination unit 32 excludes short sentences and movement of the line of sight at the time of page turning from the determination target. The details of the determination of difficulty in reading will be described later.

The display conversion unit 33 changes or maintains the display form of the text data based on the determination result by the difficulty-to-read determination unit 32. The display form can be changed, for example, by changing the layout of a segment in which a sentence is divided based on a semantic unity (such as line breaks or breaks in a sentence or changing the character baseline) or periodic changes in segment units (micro-vibration or slight vibration). It is desirable to switch between display and non-display, etc.). Alternatively, the contrast between the characters and the background may be changed, the font size may be changed, or the like. A specific example of changing the display form will be described later.

The control unit 11 of the text display device 1 measures the line-of-sight movement data by the measuring instrument 20 and the measurement data by the data acquisition unit 31 while the reader is viewing (reading) the text, that is, while the text is displayed on the display unit 16. And the determination of the difficulty of reading by the difficulty of reading determination 32 are repeated. The display conversion unit 33 changes or maintains the display form of the text data according to the determination result each time the determination result of difficulty in reading is notified. As a result, the determination result of difficulty in reading is fed back each time, and the display form is changed to an appropriate display form in real time.

Next, the flow of the sentence display process executed by the sentence display device 1 will be described with reference to the sequence diagram of FIG.

First, the control unit 11 (display unit 16) reads the text data from the storage unit 12 and displays the text data on the display 41 (step S101). The measuring device 20 measures the movement of the line of sight (line-of-sight movement data) of the reader viewing the text data (step S102). The line-of-sight movement data is data on the line-of-sight movement direction and movement distance measured at predetermined time intervals. The line-of-sight movement data measured by the measuring device 20 is sequentially transmitted to the control unit 11.

The control unit 11 acquires measurement data (line-of-sight movement data) from the measuring device 20 (step S103). The control unit 11 determines the difficulty of reading based on the acquired line-of-sight movement data (step S104).

In step S104, the control unit 11 counts the number of times of reading back from the acquired line-of-sight movement data. Specifically, the control unit 11 counts the number of appearances of data indicating the line-of-sight movement direction corresponding to "readback" from each line-of-sight movement data (d1, d2, ... dn) acquired within the predetermined time T. For reading back, for example, in the case of a horizontally written sentence, the number of movements of the line of sight to the left is counted as the number of reading backs. In the case of vertically written sentences, the number of times the line of sight moves upward is counted as the number of times of reading back. The control unit 11 calculates an index value P1 of difficulty in reading based on the following equation (1) based on the number of readbacks counted.

In the formula (1), the number of line breaks in a sentence is the number of lines included in the sentence read within the predetermined time T. From the line-of-sight position at the disclosure time of the predetermined time T and the line-of-sight position at the end time, the sentence read within the predetermined time T can be grasped.
Alternatively, when counting the number of readbacks from the acquired line-of-sight movement data, it is assumed that the readbacks until all the sentences displayed on the display unit 16 (display 41) are read back are counted, and the sentence breaks in the equation (1) are counted. The number may be the number of lines displayed on the display unit 16 (display 41). In this case, the control unit 11 can recognize in advance the number of sentence line breaks in the displayed sentence data.

In the index value P1 shown in the equation (1), since the number of line breaks is subtracted from the total number of readbacks, the readback due to the line breaks and the readback due to the difficulty of reading are distinguished to determine the difficulty of reading. It can be performed. Therefore, it is possible to accurately determine the difficulty of reading from the easily measurable data such as the moving direction of the line of sight. When the index value P1 calculated by the above equation (1) exceeds a predetermined threshold value, the control unit 11 determines that it is “difficult to read”.

In step S104, the control unit 11 may determine the difficulty of reading by paying attention to the line-of-sight movement distance, in addition to the equation (1) based on the line-of-sight movement direction. That is, the control unit 11 calculates the index value P2 of the difficulty of reading based on the following equation (2).

In calculating the index value P2, it is assumed that the threshold value for dividing the line-of-sight movement distance into large (long), medium, and small (short) is set in advance.
In equation (2), all the read-backs with a short line-of-sight movement distance are considered to be due to difficulty in reading, not read-back by line breaks. As a result, it is possible to determine the difficulty of reading by distinguishing between reading back due to difficulty in reading and reading back due to line breaks. Therefore, it is possible to accurately determine the difficulty of reading from easily measurable data such as the moving direction and the moving distance of the line of sight. Further, when the formula (2) is used, it is not necessary to know the number of line breaks as compared with the case where the formula (1) is used, so that it can be applied to sentences in various display forms.

When the index value P2 calculated by the above equation (2) exceeds a predetermined threshold value, the control unit 11 determines that it is “difficult to read”.

It should be noted that the control unit 11 does not determine the difficulty of reading by the above equations (1) and (2) for short sentences. In addition, the movement of the line of sight when turning pages is not used for judgment. This is because, in the case of a short sentence or page turning, the line-of-sight movement direction moves in the direction opposite to the direction in which the sentence travels, or the line-of-sight movement distance becomes shorter, regardless of the difficulty in reading the sentence. By defining the data that is not used for the difficulty of reading determination in this way, it is possible to determine the difficulty of reading more accurately.

The control unit 11 changes the display form of the text data when it is determined in step S104 that it is “difficult to read” (step S105). The determination may be made using either one of the index values P1 and P2, or both results may be used. If it is not determined to be "difficult to read" in step S104, the display form being displayed is maintained.

In the change of the display form in step S105, for example, the control unit 11 divides the character string of the text data into a character string (also referred to as a "segment") in units of a length that fits within the viewing angle of the reader. Display text data so that it is possible to encourage the movement of the viewpoint for each segment. This makes it easier for the reader to move the stop position of the central visual field for each segment, which is a semantic group, and can improve reading efficiency.

Specific examples of the mode of displaying the text are described in, for example, JP-A-2016-081107, JP-A-2016-17803, JP-A-2016-197141 and the like. In Japanese Unexamined Patent Publication No. 2016-081107, line breaks are set so that characters in the same segment are on the same line, and the display position (character baseline) of each segment on the same line is gradually lowered toward the end of the line. Displaying a staircase layout that breaks a line at the position where one line becomes one segment, increases the indent amount of each line so that the beginning of the line has a slope, and returns it to the left edge of the screen in the first segment of the next paragraph. The morphology is described. Further, in Japanese Patent Application Laid-Open No. 2016-173803, the display of each segment is periodically changed according to a predetermined change pattern (highlighting, micro-vibration display, character size, background color or character color, underlining, etc.). The display form to be displayed is described. Further, in Japanese Patent Application Laid-Open No. 2016-081107, line breaks are made so that characters in the same segment are on the same line, adjacent segments are grouped into different groups, and display layers having different depths are set for each group to form a three-dimensional display. The display form to be displayed is described.

As the layout of sentences, "fixed-length line feed layout" which is a general Japanese typesetting sentence layout as shown in Fig. 5 (a) and "single phrase line + stairs indent" as shown in Fig. 5 (b). "And so on. The fixed-length line feed layout is a layout in which line breaks are performed for each predetermined number of characters per line without considering segments such as phrases, and prohibition processing is performed for punctuation marks and parentheses.

The “single phrase line + staircase indent” in FIG. 5B is a layout in which one line is composed of one phrase and arranged by stepped indentation. For example, a line break is made at the position where one line becomes one clause, and the amount of indentation of each line is increased so that the beginning of the line has a slope, and the line is returned to the left edge of the screen at the first segment of the next paragraph.

Further, as another layout, there is a "line feed layout between clauses". The "inter-phrase line feed layout" is a layout adjusted so that the phrases (segments) constituting the sentence are not divided by line breaks. If the length of one phrase exceeds the standard number of characters in one line, the phrase is adopted as it is without being divided.

In addition, as another layout, there is "internode line feed + slight vibration notation". "Inter-phrase line feed + slight vibration notation" causes adjacent phrases to vibrate at different timings. The sparseness between phrases generated by vibration forms dynamic boundary information, and the effect of promoting viewpoint movement in phrase units can be expected.

In addition, as another layout, there is "internode line break + stepped baseline layout". "Inter-phrase line feed + stepped baseline layout" is a layout that gives visual boundary information by shifting the character baselines of adjacent phrases up and down. The effect of increasing the visibility of each phrase can be expected. In this layout, the character baseline, which is a straight line in the existing layout, is drawn while being lowered step by step in phrase units. The amount of reduction may be gradually changed according to the determination result of difficulty in reading.

Further, when changing the display form, a dynamic change such as displaying / hiding sentences one sentence at a time or one phrase at a time may be added at the same place.

Further, in the case of the staircase indent shown in FIG. 5B, the indentation width of each line may be changed to gradually increase or decrease while learning the determination result of difficulty in reading. If it is determined that it is difficult to read as a result of the difficulty in reading, the amount of reduction is changed to be large or small. If it is determined that the difficulty in reading has been resolved, the amount of reduction is maintained.

In this way, when changing the display form, it is desirable to display segments that are semantically organized sentences in a predetermined layout, or to periodically change the display state of each segment.

In addition, the contrast between the characters and the background may be changed. When it is determined that it is difficult to read, the control unit 11 changes either or both of the character color and the background color so that the contrast between the character and the background becomes more conspicuous.

You may also change the font size. When it is determined that it is difficult to read, the control unit 11 changes the font size so as to gradually increase it.

The contrast between the characters and the background and the font size may be changed individually or in combination. Further, by combining with the layout change in consideration of the segment as described above, a display form that is easier to read can be realized.

Each of the above-mentioned display forms is an example, and the modification of the display form of the present invention is not limited to these, and any display form may be used.

It should be noted that each of these display modes may be registered as each display mode of the "reading assist mode" so that the user can set in advance which display mode to switch to when it is determined that the reading is difficult.

Further, the control unit 11 may select an appropriate display mode (display form) from a plurality of display modes (display form) according to the size of the index value P1 or P2 calculated in step S102. .. In this case, a table in which the sizes of the index values P1 and P2 are associated with the display mode is set in advance, and the control unit 11 refers to this table and is appropriate according to the size of the index values P1 or P2. Switch to a different display mode (display form).

While the reader is browsing the text, the operations of steps S101 to S106 are repeated. That is, the measuring device 20 repeatedly measures the line-of-sight movement data, acquires the measurement data, and determines the difficulty of reading (steps S101 to S104), and the control unit 11 is notified of the determination result of the difficulty of reading each time. , The display form of the text data is changed according to the determination result (steps S105 to S106). As a result, the determination result of difficulty in reading is fed back each time, and the display form of the text is changed in real time so as to have an appropriate display form. Further, when the difficulty in reading is eliminated, the display state at that time is maintained.

As described above, according to the text display device of the present invention, it is possible to measure the movement of the line of sight of the reader, evaluate the difficulty of reading based on the movement, and change the display form to an appropriate one. .. It is possible to improve reading efficiency by accurately grasping the difficulty of reading for each reader and switching to an easy-to-read display state.

Although the text display device, the text display method, and the preferred embodiment of the program according to the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical idea disclosed in the present application, and these also naturally belong to the technical scope of the present invention. Understood.

1 …………………… Sentence display device 11 …………………… Control unit 12 …………………… Storage unit 13 …………………… Media input / output unit 14 ……………… …… Communication control unit 15 …………………… Input unit 16 …………………… Display unit 17 …………………… Peripheral device I / F unit 18 …………………… Bus 20… ……………… Measuring instrument 31 …………………… Data acquisition unit 32 …………………… Difficult to read judgment unit 33 …………………… Display conversion unit 41 ……………… …display

Claims (13)

A display unit that displays sentences and
A data acquisition unit that acquires line-of-sight movement data, which is measurement data of line-of-sight movement of the reader who reads the displayed sentence,
A determination unit that determines the difficulty of reading the sentence based on the line-of-sight movement data,
A display conversion unit that changes the display form of the sentence based on the determination result by the determination unit, and
Equipped with a,
The text display device is characterized in that the difficulty of reading is determined based on the number of times of reading back, which is a movement of the line of sight in a direction different from the traveling direction of the text, and which has a short line-of-sight movement distance . The sentence display device according to claim 1 , wherein the determination unit determines the difficulty in reading by distinguishing between the movement of the line of sight due to a line break and the movement of the line of sight due to the difficulty in reading. The sentence display device according to claim 1 or 2 , wherein the determination unit determines the difficulty of reading by excluding short sentences and movement of the line of sight at the time of page turning. The text display device according to any one of claims 1 to 3 , wherein the line-of-sight movement data is measured by an electro-oculography sensor that detects the movement of the eyeball. A display unit that displays sentences and
A data acquisition unit that acquires line-of-sight movement data, which is measurement data of line-of-sight movement of the reader who reads the displayed sentence,
A determination unit that determines the difficulty of reading the sentence based on the line-of-sight movement data,
A display conversion unit that changes the display form of the sentence based on the determination result by the determination unit, and
Equipped with a,
The text display device is characterized in that the change in the display form is a layout change of a segment obtained by dividing a sentence based on a semantic unity or a periodic change in the segment unit . The text display device according to claim 5 , wherein the change in the display form further includes a change in the contrast between the characters and the background. The text display device according to claim 5 , wherein the change in the display form further includes a change in the font size. The sentence according to any one of claims 1 to 7 , wherein the acquisition of the line-of-sight movement data by the data acquisition unit and the determination of difficulty in reading by the determination unit are repeated during the display of the sentence. Display device. The determination unit calculates an index value for determining the difficulty of reading,
The text display device according to any one of claims 1 to 8 , wherein the display conversion unit selects and switches an appropriate display mode from a plurality of display modes according to the index value. The control part of the computer
Steps to display sentences and
The step of acquiring the line-of-sight movement data, which is the measurement data of the line-of-sight movement of the reader who reads the displayed sentence, and
A step of determining the difficulty of reading the sentence based on the line-of-sight movement data,
Steps to change the display form of the text based on the judgment result,
Only including,
The sentence display method is characterized in that the difficulty in reading is determined based on the number of times of reading back, which is a movement of the line of sight in a direction different from the traveling direction of the sentence, and which has a short line-of-sight movement distance . The control part of the computer
Steps to display sentences and
The step of acquiring the line-of-sight movement data, which is the measurement data of the line-of-sight movement of the reader who reads the displayed sentence, and
A step of determining the difficulty of reading the sentence based on the line-of-sight movement data,
Steps to change the display form of the text based on the judgment result,
Only including,
The sentence display method is characterized in that the change in the display form is a layout change of a segment obtained by dividing a sentence based on a semantic unity or a periodic change in the segment unit . Computer,
Display means to display sentences and
A data acquisition means for acquiring line-of-sight movement data, which is measurement data of line-of-sight movement of a reader reading the displayed sentence, and
A determination means for determining the difficulty of reading the sentence based on the line-of-sight movement data, and
A display conversion means that changes the display form of the sentence based on the determination result by the determination means, and
A program for functioning as,
The difficulty in reading is determined based on the number of times of reading back, which is a movement of the line of sight in a direction different from the traveling direction of the sentence, and the distance of the line of sight movement is short.
A program characterized by that . Computer,
Display means to display sentences and
A data acquisition means for acquiring line-of-sight movement data, which is measurement data of line-of-sight movement of a reader reading the displayed sentence, and
A determination means for determining the difficulty of reading the sentence based on the line-of-sight movement data, and
A display conversion means that changes the display form of the sentence based on the determination result by the determination means, and
A program for functioning as,
The change in the display form is a layout change of a segment obtained by dividing a sentence based on a semantic unity, or a periodic change in the segment unit.
A program characterized by that .

Images