JPH1185452A - Scroll controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a user recognizable a necessary information even when the scrolling speed exceeds the recognizing capability of the user, by performing a scrolling operation in response to the reading capability, etc., of the user in order to secure a proper scrolling operation for the user. SOLUTION: The line of sight of a user is detected (S20), and it is judged whether or not this line of sight is included in an image displayed at a display part after the direction of the line of sight is detected (S21). If the line of sight is included in the image, the movement of the line of sight is detected (S22), and it is judged whether or not a scrolling operation has been carried out (S23). If the scrolling operation has been carried out, the displayed image is scrolled (S24) and the scrolling speed is controlled based on the calculated moving speed of the line of sight. If an operation is performed to scroll upward the displayed image, for example, the scrolling speed is controlled based on the up-down movement of the line of sight. When the scrolling operation is stopped, the image scroll is also stopped (S25). Thus, the displayed image is scrolled at a speed where the user can read the image in the easiest way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image scroll control device, and more particularly to a display image movement control in an information processing device such as a word processor, a workstation, and a personal computer.

[0002]

2. Description of the Related Art Conventionally, when a document is read using a document processing device such as a personal computer or a word processor, a display image (screen) is displayed.
Need to be scrolled, but when the displayed image is scrolled, a scroll bar or a cursor key may be used. Here, as a case of using a scroll bar, there are a case where a mouse is operated by pointing a mouse pointer (mouse cursor) to scroll buttons at both ends of the scroll bar, and a case where a scroll box is dragged. In some cases, when the mouse is operated between the scroll box in the scroll bar and the scroll button, the scroll box moves by about one screen. As an operation using the cursor key, there is a method in which the display image is scrolled by moving the cursor key to an end of the display image.

[0003]

However, when scrolling with the scroll buttons or scrolling with the cursor keys, the scrolling is performed at a preset speed, so that depending on the user, it may be too fast or too slow. It may be too much. Further, there are cases where it is better for a certain user to change the scroll speed depending on whether the user wants to read the sentence carefully or quickly.

Further, when the scroll box is dragged or when the mouse is operated between the scroll box and the scroll button in the scroll bar, the screen is immediately switched to the display image corresponding to the position where the scroll box has been moved, so that the operation is continued. I can't read certain sentences.

[0005] In addition, even when the user finds a part of interest during scrolling, if the scrolling speed is high, the user may not be able to recognize necessary information. That is,
If the scrolling speed is faster than the user can recognize,
Even if you want to recognize only words, you cannot. Also, there is a method of stopping scrolling when the user finds a place of interest. In such a case, scrolling must be stopped. Further, when stopping the scrolling, the point of interest may pass, and it may be necessary to scroll in the opposite direction.

Accordingly, the present invention provides a scroll control device capable of performing scrolling appropriate for a user by performing scrolling in accordance with the reading ability of the user and the like, and having a scroll speed exceeding the recognition ability of the user. It is an object of the present invention to provide a scroll control device capable of recognizing necessary information even at a high speed.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a first aspect of the present invention is a scroll control device for controlling scrolling of a display image, comprising: Is detected, and the scroll speed is controlled according to the detected speed. Therefore, the scroll speed is controlled according to the detected line-of-sight speed, so that scrolling can be performed in accordance with the user's line-of-sight movement, and the user can easily read the document information.

A second aspect of the present invention is a scroll control device for controlling scrolling of a display image, wherein a line-of-sight detecting means for detecting a line of sight in the display image, and a line-of-sight speed calculating means for calculating a speed of the detected line of sight. And scroll speed control means for controlling the scroll speed in accordance with the calculated line-of-sight speed. In the scroll control device having the second configuration, first, the line-of-sight detection unit detects the line of sight, and the line-of-sight speed calculation unit calculates the detected line-of-sight speed. Then, the scroll speed control means controls the scroll speed according to the calculated gaze speed. Therefore, the scroll speed is controlled according to the detected line-of-sight speed, so that scrolling can be performed in accordance with the user's line-of-sight movement, and the user can easily read the document information.

Thirdly, in the first or second configuration, when the line of sight reaches an end of the display image, scroll processing is started. Therefore, since the scroll processing is started when the end of the display image is reached, the scroll is automatically performed, and it is not necessary to perform the scroll operation one by one. Fourth,
The third configuration is characterized in that the scroll direction is determined based on the direction of the end of the display image at which the line-of-sight position has arrived. Fifth, in any of the first to fourth configurations, the scroll process is started when a scroll operation is performed by the user.

Sixth, in any one of the first to fifth configurations, when detecting the speed of the line of sight,
A speed component in a predetermined direction is detected according to a scrolling direction, and a scroll speed is controlled according to the detected speed component. Therefore, the scroll speed is determined by dividing the line-of-sight speed into components in each scroll direction, so that the scroll can be performed more faithfully according to the line-of-sight movement. Seventh, in the sixth configuration, the scroll speed is substantially the same as the detected speed component. Therefore, scrolling can be performed more faithfully according to the movement of the line of sight.

Eighthly, the present invention relates to a scroll control device for controlling scrolling of a display image, wherein when a gazing point is detected in the display image during scrolling, a predetermined area in the display image is stopped for a predetermined time. Is displayed. Therefore, when a point of interest is detected during scrolling, a predetermined area including the point of interest is fixedly displayed for a predetermined period of time. Can be recognized.

A ninth aspect is a scroll control device for controlling scrolling of a display image, comprising a gazing point detecting means for detecting a gazing point during scrolling, and a gazing point detecting means for detecting a gazing point when the gazing point is detected. Stop display means for stopping and displaying a predetermined area for a predetermined time. In the scroll control device having the ninth configuration, the gazing point detecting means detects the gazing point during scrolling. Then, when a gazing point is detected, the stop display means stops and displays a predetermined area in the display image for a predetermined time. Therefore, it is possible to fix and display a place where the user is interested, and to make the user recognize the content.

A tenth feature is that, in the eighth or ninth configuration, the gazing point is a gaze position where the gazing point stays for a predetermined time. Eleventhly, in any one of the eighth to tenth configurations, the predetermined area is a predetermined area including a gazing point.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A scroll control device A1 according to the first embodiment of the present invention is configured as shown in FIG. 1, and includes a display unit 10, a document memory 12, a movement amount detection unit 14, a time measurement processing unit 16, a scroll It has a processing unit 18, a line-of-sight detection processing unit 20, and a document editing processing unit 22.

Here, the display section 10 is for displaying a predetermined document, and is constituted by a monitor such as a CRT or an LCD. The document memory 12 stores document information to be displayed on the display unit 10. The movement amount detection unit 14 detects the amount of movement of the line of sight on the display image, and stores a program for detecting the movement amount, a CPU for performing predetermined processing according to the program, and the like. Consists of

The time measurement processing section 16 measures the time required for the line of sight to move on the display image. The memory stores a program for measuring the movement time and performs predetermined processing in accordance with the program. It is composed of a CPU and the like. The scroll processing unit scrolls the display image, and has a function of scrolling the display image according to the scroll control information from the document editing processing unit 22.

As shown in FIG. 2, the line-of-sight detection processing unit 20 as a line-of-sight detection unit includes a camera 20a for photographing a user and a line-of-sight detection unit 20b for detecting a line of sight based on an image photographed by the camera. Etc. Here, the camera 20a, as shown in FIG.
It is installed so as to photograph the face of the user A who looks at the display unit 10. This camera 20a is constituted by a CCD camera or the like.

The eye-gaze detecting unit 20b includes a human face in the image data obtained by the camera 20a,
When the user faces the display unit 10, the line of sight of the person is detected. Specifically, edge extraction is performed on image data obtained by shooting, and when a human face is captured, the direction of the iris in the eyes is detected. Details will be described later. This line-of-sight detection unit 20b
Is actually a memory that stores a program for performing line-of-sight detection and a CP that performs predetermined processing in accordance with the program.
U and the like.

The document edit processing section 22 controls the operation of each section in the scroll control device A1 to perform various processes for document editing. For example, the document edit processing section 22 detects the line of sight detected by the movement amount detection section 14. A process of calculating the moving speed of the line of sight on the display image from the moving amount and the moving time of the line of sight measured by the time measurement processing unit 16 is performed, and the scroll speed is set in accordance with the calculated moving speed of the line of sight. Control. That is, scroll control information about a scroll speed according to the moving speed of the line of sight is output. That is, the document editing processing unit 22 stores information about the scroll speed corresponding to the line of sight speed. The information on the scroll speed may be provided according to the scroll direction. In other words, the direction from top to bottom in the display image, the direction from bottom to top,
The relationship between the line-of-sight speed and the scroll speed is defined for four directions, that is, a left-to-right direction and a right-to-left direction.

Further, a process for determining whether or not the line of sight detected by the line of sight detection processing unit 20 exists in the display image is performed. The processing for stopping the scroll of the displayed image is performed. In other words, the document edit processing unit 22 functions as a main control unit.
And a memory for storing a program for performing processing according to the flowchart shown in FIG. The document editing unit 22 functions as the line-of-sight speed calculation unit and the scroll speed control unit. In the present embodiment, the line-of-sight detection means is described as being configured by the line-of-sight detection processing unit 20 having the camera 20a and the line-of-sight detection unit 20b as described above, but is not limited thereto. Other configurations may be used if possible. Further, the CPU and the memory constituting each of the above-described units may be actually constituted by a single unit.

An image scrolling control device A1 having the above configuration.
Will be described with reference to FIGS. 5 to 9. As shown in FIG. 3, it is assumed that the user is using a computer terminal P on which the scroll control device A1 having the above configuration is mounted.

First, automatic scrolling based on line-of-sight detection will be described. It is assumed that document information of a document to be read is stored in the document memory 12. It is assumed that the content of this document is specifically as shown in FIG. Next, the user reads this document on the screen. At this time, the user's line of sight is detected (S10).

That is, the camera 20a captures a predetermined user's face. Then, the image captured by the camera 20a is sent to the visual line detection unit 20b. The line-of-sight detection unit 20b performs an edge extraction process on the captured image. Then, after the edge extraction processing, first, it is detected whether or not there is a human face. In other words, the image subjected to the edge extraction processing is compared with the person standard pattern image to estimate whether or not there is a human face. The determination of a human face may be performed in consideration of skin color information.
The moving object may be detected from the difference image between the frames, and the human face may be determined by comparing the moving object with the person standard pattern image.

When it is detected that there is a human face, the line of sight is detected. Here, the gaze direction is detected. That is,
From the edge information obtained by extracting the edges, the vertical position and the horizontal position of the eyes in the detected human face are estimated to cut out an image of the eye portion, and a grayscale image of the cut out region Generate Thereafter, the density distribution information regarding the position of the iris in the eyes is calculated for the horizontal direction and the vertical direction, and compared with the density distribution information for the horizontal direction and the vertical direction provided in advance, the similarity is calculated, and the gaze direction is calculated. It is calculated.

Then, the spatial position of the line of sight in the detected direction is detected. That is, the spatial position of the line of sight is detected based on the spatial coordinate position of the eye of the person in the captured image and the detected direction of the line of sight. The spatial coordinate position of the eye is detected as follows. That is, the coordinates in the X direction and the Y direction shown in FIG. 3 can be detected by the coordinates in the photographed two-dimensional image, and the coordinates in the Z direction can be estimated from, for example, the size of the face. And a method of detecting with a distance sensor. The coordinates in the Z direction may be calculated based on the time from when a predetermined light is emitted to when the light is reflected back on the face, eyes, and the like and returns. As described above, based on the spatial position of the eyes and the gaze direction,
Since the position of the line of sight in the space is determined, the position of the line of sight on the display unit 10 is detected.

In the detection of the line of sight, it is preferable that a condition is determined on whether or not a gazing point is detected. In other words, the processing is performed on the assumption that the line of sight has been detected for the first time when the line of sight has been stopped for a certain time. In other words, even if the line of sight is directed toward the display unit 10, if the line of sight does not stop for a certain period of time, it can be said that it is not possible to say that the user is looking at the display image, and the line of sight stops for a predetermined period of time for the line of sight detection. It is desirable to make it a condition. The visual line detection processing is performed by the visual line detection unit 20b.

The method of detecting the direction of the line of sight is not limited to the above method, but may be another method. For example, the detection of the presence or absence of a human face may be performed in the same manner as described above, and the detection of the line of sight may be performed based on the reflection angle by irradiating near-infrared light. Further, the above method and this method using near-infrared light may be used in combination. The coordinates in the Z direction may be detected based on the arrival time at which the near-infrared light is reflected and returned. The method of gaze detection is described in JP-A-8-322796 and JP-A-5-252.
No. 05030.

When the line of sight is detected as described above, it is determined whether or not the line of sight is within the display image on the display unit 10 (S11). That is, it is determined whether the detected line of sight passes through the area in the display image. This determination is performed by the visual line detection unit 20b. If it is within the display image, the process proceeds to step S12. If it is not within the display image, the process returns to step S10.

Next, in step S12, the movement of the line of sight is detected (S12). In other words, how the line of sight moves on the display image is tracked, and the amount and time of movement of the line of sight are measured, and the line-of-sight position, that is, the moving speed of the coordinate position of the line of sight on the display image is determined. Is calculated. At that time, in calculating the moving speed, a speed component in a predetermined direction is detected according to the scrolling direction. That is,
Direction of display image from top to bottom (screen vertical direction downward), bottom to top direction (screen vertical direction upward), left to right direction (screen horizontal right direction), right to left direction (screen Of the four directions (horizontal left direction), those that can be calculated are calculated in advance. For example, when the line of sight moves in the lower left direction, a velocity component in a direction from top to bottom and a velocity component from right to left are calculated. That is, FIG.
When the line of sight moves from the X point to the Y point as shown in (1), a velocity component from top to bottom and a velocity component from right to left are calculated.

Then, it is determined whether or not the line of sight has reached the end of the display image (S13). When it is determined that the line of sight has reached the end of the display image, scroll processing of the display image is performed (S14). That is, the display image is scrolled. In this case, the display image is scrolled according to the already calculated moving speed of the line of sight.

For example, when a user reads a display image displayed on a certain screen and finishes reading up to the last line of the screen, the line of sight moves to the lowermost end of the display image. In this case, scroll processing is performed. Will be. The scrolling speed in this case is the moving speed of the line of sight from top to bottom while reading the display image displayed on the screen from the upper left end to the lower right end (that is, the speed component in the downward direction (vertically downward)). Will follow. Also, in the case of skipping, if skipping is performed in order from the top, the line of sight comes to the lowermost end, so that scroll processing is performed at that time. In this case as well, it follows the speed of movement of the line of sight from top to bottom when the line of sight is moved from the upper end to the lower end of the screen. In these cases, since the line-of-sight position is at the lowermost end of the display image, the display image is scrolled upward. It is preferable that the scroll speed is substantially the same as the downward moving speed of the line-of-sight position. That is, when scrolling upward, scrolling is performed according to the velocity component of the line of sight from top to bottom.
Specifically, when scrolling upward from the state of FIG. 7, the state shown in FIG. 8 is eventually obtained, and when scrolling further upward, the state shown in FIG. 9 is obtained. In this case, scrolling is not scrolling in which the display image is switched to a document completely different from the immediately preceding display image, but scrolling the display image sequentially in accordance with the calculated line-of-sight moving speed. It is.

In the above description, the display image is scrolled upward when the line of sight reaches the lowermost end of the display image. However, when the line of sight reaches the uppermost end, The displayed image is scrolled down,
When the line of sight reaches the rightmost end, the display image is scrolled to the left, and when the line of sight reaches the leftmost end, the display image is scrolled to the right. The scroll speed at that time follows the calculated speed of the line-of-sight position in each direction. For example, when scrolling the display image in the downward direction, the scroll is performed according to the speed of the line of sight from upward to downward.

The above processing is performed until the end of the sentence (S15). When the line of sight has moved to the other end, scrolling is performed in that direction (S12, S13). For example, if the gaze position is moved to the top end in a state where the gaze position is initially detected at the bottom end and the display image is scrolled up, the display image is now scrolled down. You. The scroll speed at that time follows the calculated line-of-sight speed from below to above. Note that scrolling may be stopped when the line-of-sight position is detected in a region other than the predetermined range of the display image. Further, when the line of sight is displaced from the display area of the screen, scrolling may be stopped.

The speed of the detected line of sight is updated. In other words, when scrolling in a certain direction,
Control is performed according to the speed of the line of sight detected immediately before. Note that the calculated line-of-sight speed may be averaged sequentially. That is, when the moving speed of the line of sight in the downward direction is detected a plurality of times, those moving speeds are averaged.

In the above-described manner, the scroll speed is adjusted according to the moving speed of the line of sight, so that the user can scroll at the most easy-to-read speed. For example, when a user is reading a certain sentence carefully, Scrolls at a slow speed, while scrolling is performed at a high speed when skipping reading. Further, since scrolling is performed automatically, it is not necessary to perform scrolling operation one by one.

When all document information is displayed in the vertical or horizontal direction, it is not necessary to scroll in that direction. For example, when all the horizontal directions of certain document information are displayed on the screen, there is no need to perform horizontal scrolling. Also, if the document information is not displayed on the screen not only in the vertical direction but also in the horizontal direction, the line of sight comes to the rightmost end while reading the document from left to right. Is scrolled to the left according to the speed, and when the reading of the document information is completed up to the right end, the line of sight then comes to the left end, so that it is scrolled to the right according to the moving speed of the line of sight to the left. When reading of the document at the bottom line is completed after such repeated left and right scrolling, the line of sight comes to the left end at the bottom end. At this time, the display image is scrolled rightward, and at the same time, the display image is scrolled upward according to the detected moving speed of the line of sight in the downward direction.

Next, the manual scrolling will be described with reference to FIG. It is assumed that document information of a document to be read is stored in the document memory 12. It is assumed that the content of this document is specifically as shown in FIG.

Next, the user reads this document on the display image. Steps S20 to S22 in FIG.
Steps S10 to S12 in FIG.
The processing is the same as that described above. That is, first, the line of sight of the user is detected (S20). When the direction of the line of sight is detected, it is determined whether or not the line of sight is in the display image on the display unit 10 (S21). If it is within the display image, the process proceeds to step S22. If it is not within the display image, the process returns to step S20. Then, in step S22, the movement of the line of sight is detected (S22). That is, how the line of sight moves on the display image is tracked, the amount of movement of the line of sight and the movement time are measured, and the moving speed of the line of sight on the display image is calculated. At that time, in calculating the moving speed, a speed component in a predetermined direction is detected according to the scrolling direction. That is, one of four directions, that is, a direction from top to bottom, a direction from bottom to top, a direction from left to right, and a direction from right to left in the display image, is calculated. Thereafter, it is determined whether a scroll operation has been performed (S23). That is, it is determined whether or not an operation has been performed using the scroll buttons or the cursor keys.

If a scroll operation has been performed, scroll processing of the displayed image is performed (S24), and the scroll speed is controlled according to the calculated line-of-sight speed. For example, when an operation of scrolling the display image upward is performed, the scroll speed is controlled according to the speed of the line of sight from top to bottom. Therefore, when the document information is read from the upper left corner to the lower right corner in a certain display image, and the scroll button 32 is scrolled upward as in the case where the scroll button 32 is continuously clicked with the mouse cursor 30, the operation starts from the upper left corner. The scroll speed is determined according to the moving speed of the line of sight from top to bottom when reading the document information to the lower right end.

The speed of the detected line of sight is updated. In other words, when scrolling in a certain direction,
Control is performed according to the speed of the line of sight detected immediately before. For example, when an operation of scrolling upward is performed and the line-of-sight speed from the top to the bottom is detected before and after, the latest data is used. Note that the calculated line-of-sight speed may be averaged sequentially. That is, when the moving speed of the line of sight in the downward direction is detected a plurality of times, those moving speeds are averaged.

In the manner described above, the scroll speed is adjusted according to the moving speed of the line of sight, so that the user can scroll at the most easy-to-read speed. For example, when a user is reading a certain sentence carefully, Scrolls at a slow speed, while scrolling is performed at a high speed when skipping reading. Then, the above processing is performed until the scroll operation is released (S25). That is, when the scroll operation is stopped, the scroll is naturally stopped.

Next, a second embodiment will be described. Second
The scroll control device A2 according to the embodiment is configured as shown in FIG.
Gaze area detection unit 24, time measurement processing unit 16 ',
It has a scroll processing unit 18, a line-of-sight detection processing unit 20, and a document editing processing unit 22.

Here, the display unit 10 and the document memory 1
2. The configuration of each unit of the scroll processing unit 18 and the line-of-sight detection processing unit 20 is the same as that of the first embodiment. That is, the display unit 10 is for displaying a predetermined document.
It is composed of a monitor such as an RT or LCD. The document memory 12 stores document information to be displayed on the display unit 10.

The scroll processing section 18 is for scrolling the display image, and has a function of scrolling the display image in accordance with the scroll control information from the document editing processing section 22. In addition, the line-of-sight detection processing unit 2
0 is a camera 20 for photographing the user as shown in FIG.
a and a line-of-sight detecting unit 20b for performing line-of-sight detection based on images taken by the camera. here,
As shown in FIG. 3, the camera 20a is installed so as to photograph the face of the user A looking at the display unit 10. This camera 20a is constituted by a CCD camera or the like.

The eye-gaze detecting unit 20b includes a human face in the image data obtained by the camera 20a.
When the user faces the display unit 10, the line of sight of the person is detected. Specifically, edge extraction is performed on image data obtained by shooting, and when a human face is captured, the direction of the iris in the eyes is detected. Details will be described later. In the present embodiment, the line-of-sight detection processing unit 20 particularly detects a gazing point. That is, the line of sight staying for a predetermined time is detected. That is, the gaze detection processing unit 20 functions as a gazing point detection unit. The gaze detection unit 20b actually includes a memory that stores a program for performing gaze detection, a CPU that performs predetermined processing in accordance with the program, and the like.

The time measurement processing section 16 'has a different function from that of the first embodiment, and measures the time when the user is looking at a certain portion of the document on the display image. Actually, it is composed of a memory storing a program for measuring the time and a CPU for performing predetermined processing according to the program. The gaze area detection unit 24 as the gaze area detection means detects a gaze point or a gaze area of a line of sight on a display image, and includes a memory storing a program for detecting the gaze area and the program. And the like for performing predetermined processing according to the above.

The document editing processing section 22 controls the operation of each section in the scroll control device A2 to perform various processing for document editing. For example, the line of sight measured by the time measurement processing section 16 'is used. The gaze point is detected on the basis of the staying time, and scrolling of only a predetermined area including the gaze point detected by the gaze area detection unit 24 is stopped for a predetermined time to control the scroll processing of the display image. That is, the document edit processing unit 2
Reference numeral 2 functions as a main control unit, and specifically includes a memory, a CPU, and the like for storing a program for performing processing according to the flowchart shown in FIG. This document edit processing unit 22 functions as the above-mentioned stop display unit.

An image scrolling control device A2 having the above-described structure.
Will be described with reference to FIGS. 11 to 13. As shown in FIG. 3, it is assumed that the user uses a computer terminal P on which the scroll control device A2 having the above configuration is mounted. First, it is assumed that document information of a document to be read is stored in the document memory 12. It is assumed that the content of this document is specifically as shown in FIG.

Next, the user reads this document on the display image. At this time, the user's line of sight is detected as in the first embodiment (S30). That is, since the position of the line of sight in the space is determined based on the spatial position of the eyes and the direction of the line of sight, the position of the line of sight on the display unit 10 is detected. The details are as described in the first embodiment.

When the direction of the line of sight is detected as described above, it is determined whether or not the line of sight is within the display image on the display unit 10 (S31). That is, it is determined whether the detected line of sight passes through the area in the display image. When it is within the display image, the process proceeds to step S32, and when it is not within the display image, the process returns to step S30.

In step S32, it is determined whether or not the display image is scrolling (S32). This function is based on the premise that the display image is scrolling. The display image may be scrolled automatically or manually, that is, by scroll button operation or continuous cursor key operation. Since the document editing processing unit sends control information for scrolling to the scroll processing unit 18, whether or not scrolling is being performed can be determined by monitoring this control information. In this case, the document editing unit 22 serves as a scroll determination unit. If scrolling is being performed, the process proceeds to step S33. If scrolling is not being performed, the process returns to step S30. The direction of scrolling is arbitrary, and may be any one of up, down, left, and right.

Next, the movement of the line of sight is detected (S33).
In other words, how the line of sight moves on the display image is tracked, and the time during which the line of sight stays at any position of the document on the display image is measured. Then, it is determined whether or not the gazing point has been detected (S34). That is, when the measured time exceeds a predetermined time set in advance, it is determined that the user is a gazing point. If it is determined that the point of interest is determined, the process proceeds to step S35. If the point of interest is not detected, the process proceeds to step S35.
Return to 33.

In step S35, a process of stopping and displaying a predetermined area including the detected point of interest is performed. For example, as shown in FIG. 12, when the point of interest P is detected, a process of stopping the region R including the point of interest P for a certain period of time is performed. The portion other than the region R is still scrolled as shown in FIG. Note that scrolling of the displayed image is performed normally,
The region R is fixedly displayed for a certain period of time. The stop time is a time during which the region R can be instantaneously perceived, that is, an extremely short time of several milliseconds. It is assumed that the size of the region R is predetermined. Then, the above processing is performed until the end of the sentence (S36).

As described above, according to the scroll control device A2 of this embodiment, when a point of interest is detected during scrolling, a predetermined range including the point of interest is fixedly displayed for a predetermined time. It is possible to fix and display a place where the user is interested, and to make the user recognize the content.

[0055]

According to the scroll control device of the present invention, it is possible to perform scrolling appropriate for the user by performing scrolling according to the reading ability of the user. Even when the scroll speed is faster than the user's recognition ability, necessary information can be recognized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a scroll control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a line-of-sight detection processing unit.

FIG. 3 is an explanatory diagram showing a use state of a scroll control device according to each embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating an operation of the scroll control device according to the first embodiment.

FIG. 5 is a flowchart illustrating an operation of the scroll control device according to the first embodiment.

FIG. 6 is a flowchart illustrating an operation of the scroll control device according to the first embodiment.

FIG. 7 is an explanatory diagram illustrating an operation of the scroll control device according to the first embodiment.

FIG. 8 is an explanatory diagram illustrating an operation of the scroll control device according to the first embodiment.

FIG. 9 is an explanatory diagram illustrating an operation of the scroll control device according to the first embodiment.

FIG. 10 is a block diagram illustrating a configuration of a scroll control device according to a second embodiment of the present invention.

FIG. 11 is a flowchart illustrating an operation of the scroll control device according to the second embodiment.

FIG. 12 is an explanatory diagram showing the operation of the scroll control device according to the second embodiment.

FIG. 13 is an explanatory diagram illustrating an operation of the scroll control device according to the second embodiment.

[Explanation of symbols]

 A1, A2 Scroll control device 10 Display unit 12 Document memory 14 Movement amount detection unit 16, 16 'Time measurement processing unit 18 Scroll processing unit 20 Gaze detection processing unit 22 Document editing processing unit 24 Gaze area detection unit

Claims (11)

[Claims] 1. A scroll control device for controlling scrolling of a display image, wherein the scroll control device detects a speed of a line of sight and controls the scroll speed according to the detected speed. 2. A scroll control device for controlling scrolling of a display image, comprising: a line-of-sight detecting means for detecting a line of sight in the display image; a line-of-sight speed calculating means for calculating a speed of the detected line of sight; A scroll control device, comprising: scroll speed control means for controlling a scroll speed according to a line of sight speed. 3. The scroll control device according to claim 1, wherein the scroll processing is started when the line-of-sight position reaches an end of the display image. 4. The scroll control device according to claim 3, wherein the scroll direction is determined based on the direction of the end of the display image at which the line-of-sight position has arrived. 5. The scroll control device according to claim 1, wherein a scroll process is started when a scroll operation is performed by a user. 6. When detecting the speed of the line of sight, a speed component in a predetermined direction is detected according to a scrolling direction,
6. The scroll speed is controlled according to the detected speed component.
3. The scroll control device according to item 1. 7. The scroll control device according to claim 6, wherein the scroll speed is substantially the same as the detected speed component. 8. A scroll control device for controlling scrolling of a display image, wherein when a gazing point is detected in the display image during scrolling, a predetermined area in the display image is stopped and displayed for a predetermined time. A scroll control device characterized by the above-mentioned. 9. A scroll control device for controlling scrolling of a display image, comprising: a fixation point detecting means for detecting a fixation point during scrolling; and a predetermined area in the display image when a fixation point is detected. A stop display means for stopping and displaying the time;
A scroll control device comprising: 10. The scroll control device according to claim 8, wherein the gazing point is a sight line position that has stayed for a predetermined time. 11. The apparatus according to claim 8, wherein the predetermined area is a predetermined area including a gazing point.
3. The scroll control device according to item 1.