JP6742609B2 - Electronic device, display control method of display screen of electronic device, and program - Google Patents

Description

The present invention relates to an electronic device, a display control method for a display screen of the electronic device, and a program.

In order to solve the above problems, the invention of claim 1 is
A display unit having a display screen,
Current position detection means for detecting the current position,
The current position detected by the current position detection means, use location type certifying means for certifying which of a plurality of preset use location types,
Viewing angle control means for controlling the viewing angle of the display screen,
The stores the information of the viewing angle of the display screen, the point of use of the view image corresponding to the type transformation aspects and / or visibility deteriorates table information storage for storing table information for storing the mode corresponding to the use location Type Department,
Acquisition means for acquiring from the table information storage unit information on the viewing angle corresponding to the type of use place certified by the use place type certifying unit, and a transformation mode and/or a visibility deterioration mode of the image.
Image processing means for transforming the image displayed on the display screen to prevent peeping and/or to deteriorate visibility.
The viewing angle of the display screen is controlled by the viewing angle control means based on the information of the viewing angle corresponding to the usage location type acquired by the acquisition means, and the viewing location of the usage location type acquired by the acquisition means. Control means for controlling the image processing means so as to transform the image in a corresponding transformation mode and/or to deteriorate the visibility in a visibility deterioration mode;
An electronic device comprising:

For example, in a portable personal computer such as a laptop computer, as described in, for example, Japanese Patent Laid-Open No. 2001-350549, there is no operation input by an input device such as a keyboard or a mouse by a monitoring timer. When it is detected that the above condition has continued for a predetermined time or more, the state where the image is displayed on the display screen is changed to the power saving state where the image is not displayed on the display screen. I have to.

Then, in Patent Document 1, even if the state without operation input by the input device continues for a predetermined time or more, when the user's line-of-sight detection means detects that the user is watching the display screen, power saving is performed. Inventions that prevent the transition to the above state are also described.

In addition, in this type of electronic device having a display screen, it is possible to switch between wide and narrow viewing angles of the display screen in view of the increased chances that others will peep at the display screen when using it outdoors. Such a method is disclosed in Patent Document 2 (WO2006/106662A1). Further, in Patent Document 3 (Japanese Patent Laid-Open No. 2012-129701), the display information displayed by the other person on the display screen is displayed based on the information about the number of the other person's line of sight and the angle of each line-of-sight direction. A technique is disclosed that makes it impossible to read.

JP 2001-350549 A WO 2006/106662 A1 JP 2012-129701 A

In the above-mentioned Patent Document 1, the difference in the place where the electronic device is used and the display content (display content) displayed on the display screen of the electronic device is not considered, and regardless of the place of use or the display content, it is uniform. In addition, the transition control to the power saving state is performed.

However, there are various places where electronic devices are used, such as at home, in the office (workplace), on a moving train or bus, and depending on the place of use, environmental factors around the user and the degree of continuation request of the display screen by the user may be different. different. Therefore, depending on the place of use, it may be possible to shift to the power saving state earlier, and conversely, it may be better not to shift to the power saving state as much as possible. Also, depending on the display content displayed on the display screen, it may be possible to shift to the power saving state earlier, or conversely, it may be better not to shift to the power saving state as much as possible. ..

Further, Patent Document 2 only describes switching of the viewing angle between wide and narrow in order to prevent snooping of an image displayed on the display screen, and the place where the electronic device is used and the display screen of the electronic device are described. It is not disclosed to automatically switch according to the display content (display content) displayed in.

However, as in the case of the transition time to the power saving state, depending on the place where the electronic device is used and the display content, it is appropriate that the viewing angle is wide or narrow to prevent peeping of the image displayed on the display screen. Depending on whether or not there is any, it is troublesome and complicated if the user switches the viewing angle each time.

Further, Patent Document 3 only discloses a technique for making it impossible for another person to read an image displayed on the display screen for the purpose of preventing peeping, and a place where an electronic device is used or an electronic device is used. No consideration is given to switching the degree to prevent others from reading the image according to the display content (display content) displayed on the display screen of the device.

However, in order to prevent the user from looking into the image, if the image displayed on the display screen cannot be read by others, the user cannot read the image. Depending on the contents and display contents, it may be seen by a person who is trying to peep, and when the reading by the user himself should be prioritized, or it is difficult for the peeper to read and the user can read it. In some cases, image control may be performed.

An object of the present invention is to provide an electronic device that can solve the above problems.

In order to solve the above problems, the invention of claim 1 is
A display unit having a display screen,
Current position detection means for detecting the current position,
The current position detected by the current position detection means, use location type certifying means for certifying which one of a plurality of preset use location types,
Viewing angle control means for controlling the viewing angle of the display screen,
A table information storage unit that stores table information that stores information on the viewing angle of the display screen corresponding to the type of use place;
An acquisition unit that acquires, from the table information storage unit, information on the viewing angle corresponding to the type of use place certified by the type of use place authorization unit;
Image processing means for transforming the image displayed on the display screen to prevent peeping and/or to deteriorate visibility.
A line-of-sight detection unit that detects the line-of-sight of a person other than the authorized user within the viewing angle of the display screen controlled by the viewing angle control unit,
The viewing angle of the display screen is controlled by the viewing angle control means based on the information of the viewing angle corresponding to the usage place type acquired by the acquisition means, and the viewing direction detection means has the usage right. When detecting the line of sight of a person other than the user, the image processing means is controlled to transform the image displayed on the display screen to prevent peeping and/or to deteriorate visibility. When,
An electronic device comprising:

According to the invention of claim 1 having the above-mentioned configuration, the table information storage unit stores in advance table information for storing the information of the viewing angle of the display screen corresponding to the type of place of use. The use location type certifying means certifies whether the current position detected by the current position detecting means is one of a plurality of preset use location types. The acquisition means acquires, from the table information storage unit, the viewing angle of the display screen corresponding to the type of use place certified by the use place type certifying means. Then, the control unit controls the viewing angle control unit based on the acquired information of the viewing angle to control the viewing angle of the display screen.

Then, the line-of-sight detection unit detects the line-of-sight of a person other than the user who is authorized to use within the viewing angle of the display screen controlled by the viewing angle control unit. The control unit controls the image processing unit when the line-of-sight detection unit detects the line-of-sight of a person other than the authorized user, and transforms the image displayed on the display screen to prevent peeping. Or worsen the visibility.

Therefore, according to the first aspect of the invention, a person other than the authorized user peeks at the display screen on which the image is displayed with the viewing angle according to the type of usage location. When it is present, the display image can be concealed by changing the display image or deteriorating the visibility.

According to the electronic device of the present invention, it is possible to appropriately prevent a third party from peeping at an image displayed on the display screen with a viewing angle according to the type of place of use.

It is a figure for demonstrating the external appearance of an example of embodiment of the electronic device by this invention. It is a block diagram which shows the hardware structural example of the electronic device main body which comprises the principal part of embodiment of the electronic device by this invention. It is a figure for demonstrating the table information which is the principal part of embodiment of the electronic device by this invention. It is a figure which shows an example of the table information which is the principal part of embodiment of the electronic device by this invention. It is a figure which shows the flowchart for demonstrating the operation example for demonstrating the principal part of embodiment of the electronic device by this invention. It is a figure which shows the flowchart for demonstrating the operation example for demonstrating the principal part of embodiment of the electronic device by this invention. It is a figure which shows the flowchart for demonstrating the operation example for demonstrating the principal part of embodiment of the electronic device by this invention. It is a figure which shows a part of flowchart for demonstrating the operation example for demonstrating the principal part of embodiment of the electronic device by this invention. It is a figure which shows a part of flowchart for demonstrating the operation example for demonstrating the principal part of embodiment of the electronic device by this invention.

An embodiment of an electronic device according to the present invention will be described below with reference to the drawings. The embodiment of the electronic device described below can be used in the same manner as a notebook PC (Personal Computer; personal computer or personal computer) on a desk at home or in a company (workplace), and can be carried by a user. This is a case where a so-called tablet PC can be configured to be able to receive an input operation through a touch panel that is provided so as to be superimposed on the display screen when being carried around.

FIG. 1 is a diagram for explaining the outline of the electronic device 1 of this embodiment. The electronic device 1 of this embodiment includes a thin electronic device main body 2, a pad-type keyboard portion 3 that can also serve as a front cover, and a back cover 4.

The electronic device body 2 includes a display screen 5a having a size substantially covering the entire surface thereof. In this example, an LCD (Liquid Crystal Display) is used as the display device 5 having the display screen 5a. The back cover 4 is made of a relatively hard material provided so as to cover the entire surface of the electronic device body 2 opposite to the display screen 5a. Then, as shown in FIG. 1(A), the back cover 4 is configured such that a part thereof can be bent away from the electronic device main body 2, so that the electronic device main body 2 can be placed on a desk. To be able to stand in.

The keyboard unit 3 is configured to be detachable from the electronic device body 2. Although illustration is omitted, each of the joint portions of the keyboard portion 3 and the electronic device main body 2 is provided with a connector for electrically connecting each other, and when the both are joined, electrical connection is made. It is configured to be automatic.

In this example, a camera 107 is attached to the frame portion of the display screen 5a of the electronic device body 2 and is used to capture a face image of a user, a face image of a peeper, and the like.

In this example, the touch panel 6 and the viewing angle control panel 7 are superposed on the front surface of the display screen 5a of the electronic device body 2. Since the electronic device main body 2 has the touch panel 6, as shown in FIG. 1B, the touch panel 6 can be used as an operation input unit even when the connection with the keyboard unit 3 is released. Can be used as a tablet PC. Therefore, the electronic device body 2 alone constitutes the electronic device of the embodiment of the present invention.

In this example, as the viewing angle control panel 7, the viewing angle switching panel described in Patent Document 2 is used, and the viewing angle of the display screen 5a is "wide viewing angle" or "narrow viewing angle". It is possible to switch to the street. Here, the viewing angle is the size of the central angle when the range in which the image on the display screen 5a can be normally viewed is fan-shaped from the direction perpendicular to the display screen 5a, and the viewing angle is 0. The degree means that the display image on the display screen 5a can be normally viewed only from the front, and the viewing angle of 180 degrees is displayed even when viewed from the side (or directly above or below) along the display screen 5a. This means that the display image on the screen 5a can be viewed normally.

When the viewing angle control function of the viewing angle control panel 7 is not operated, the display image can be normally viewed at the maximum viewing angle θmax included in the display screen 5a. Then, in this embodiment, the viewing angle control panel 7 is automatically driven when it is necessary to prevent peeping, and the viewing angle of the display screen 5a is two kinds narrower than the maximum viewing angle θmax. Is set to the viewing angle θ1 or θ2. Here, the viewing angle θ1>the viewing angle θ2, and in this example, the wide viewing angle θ1 is, for example, 70 degrees, and the narrow viewing angle θ2 is, for example, 30 degrees.

FIG. 2 is a block diagram showing a hardware configuration example of the electronic device body 2. As shown in FIG. 2, the electronic device main body 2 causes a memory 102, an LCD controller 103, a touch panel interface 104, a viewing angle controller 105, a keyboard interface 106, a camera 107 to a control unit 101 including a processor via a system bus 100. The image recognition processing unit 108, the authentication face image storage unit 109, the current position detection unit 110, the timer unit 111, the wireless LAN communication unit 112, and the peep prevention control processing unit 113 are connected to each other.

Although not shown in FIG. 2, the memory 102 stores programs for the control unit 101 to execute various processing functions of the electronic apparatus main body 2 of this example. As shown in FIG. 2, the memory 102 also includes a display display control table storage unit 1021, a use location type buffer 1022, and a display content type buffer 1023 as part of its storage area. The storage information of the storage unit 1021 and the buffers 1022 and 1023 will be described later.

The LCD 5 is connected to the LCD controller 103, the touch panel 6 is connected to the touch panel interface 104, and the viewing angle control panel 7 is connected to the viewing angle controller 105. The LCD controller 103 displays an image on the display screen 5a under the control of the control unit 101.

In addition, the control unit 101 also controls the LCD controller 103 and the like to shift the electronic device body 2 to a state in which the image displayed on the display screen 5a of the LCD 5 is not displayed and to save power. To do. In this embodiment, the electronic device body 2 is put into a sleep state in a state where the image displayed on the display screen 5a of the LCD 5 is not displayed to save power (power saving state). The state in which the image displayed on the display screen 5a of the LCD 5 is not displayed to save power is not limited to the sleep state, and the operation of the computer is temporarily stopped and the sleep state is set to the standby state in the power saving state. You may do it.

The sleep state is a power saving state in which the computer can be quickly returned to the normal power state in a few seconds when the work is resumed. On the other hand, the hibernate state is a power saving state designed for a notebook PC, and the sleep state is a state in which the contents and settings that were being worked on are stored in a memory and a small amount of power is used. , Hibernate is a state in which open documents and programs are stored in the hard disk and the computer is turned off. The hibernation state is a state in which the operation of the computer is temporarily stopped and the computer is put in a standby state in a power saving state. Unlike turning off the power, the computer can be quickly restarted from the state before the stop.

It should be noted that as a state for saving power (a power saving state) in which the image displayed on the display screen 5a of the LCD 5 is not displayed, a state in which power is not supplied to the LCD 5 can be set.

The touch panel interface 104 detects a user's operation input on the touch panel 6 and transmits information on the detected operation input to the control unit 101. The control unit 101 performs control processing corresponding to the received operation input information.

Based on the control by the control unit 101, the view angle controller 105 switches and controls the view angle control panel 7 and does not control the view angle (state of the maximum view angle θmax), and the view angle is the wide view angle θ1 ( Either the state of switching to θmax>θ1>θ2) or the state of switching the viewing angle to the narrow viewing angle θ2 (θmax>θ1>θ2) described above.

The keyboard interface 106 detects a user's operation input to the keyboard unit 3 when the electronic device body 2 is connected to the keyboard unit 3 through the connector unit 106T, and outputs information on the detected operation input to the control unit 101. Communicate to. The control unit 101 performs control processing corresponding to the received operation input information.

In this example, the camera 107 is attached to the frame portion of the display screen 5a of the electronic device main body 2 as shown in FIG. 1, and is used to capture the face image of the user or the face image of the peeper. To be In order to monitor the user or the peeper, the camera 107 takes a face image or the like of the user or the peeper at appropriate time intervals under the control of the control unit 101 and uses the taken image information as a system. The data is transferred to the image recognition processing unit 108 via the bus 100.

An authentication face image storage unit 109 is connected to the image recognition processing unit 108. In the authentication face image storage unit 109, image information of a face image of a user who is authorized to use the electronic device 1 is registered and stored in advance. The face image of the user who has the authority to use stored in the authentication face image storage unit 109 may be the face image of the user photographed by the camera 107, or the face image of the user photographed by another photographing means. For example, the information acquired through the wireless LAN communication unit 112 may be stored. In this embodiment, the peeper is the third person whose face image is not stored in the authentication face image storage unit 109.

The image recognition processing unit 108 recognizes the face image information newly captured by the camera 107 and transferred via the system bus 100 and the user who is authorized to use the face image information stored in the authentication face image storage unit 109. By performing pattern matching with the face image information, it is determined whether or not the user who is viewing the display screen 5a of the electronic device body 2 is a user who has the use authority, and the face authentication processing is performed. To do.

Further, in this embodiment, the image recognition processing unit 108 detects the line of sight (line of sight) of the viewer of the face image from the face image information captured by the camera 107, and the viewer displays it on the display screen 5a. A line-of-sight detection process for determining whether or not the displayed display image is being viewed within the range of the viewing angle set on the display screen 5a by the viewing angle controller 105 is also performed. In this case, the image recognition processing unit 108 not only detects the line of sight of the user who has the use right, but also detects the line of sight of the peeper who does not have the use right.

In this example, the current position detection unit 110 has a function of receiving radio waves from a GPS (Global Positioning System) satellite and detecting the current position of the electronic device body 2. Further, the current position detection unit 110, as information for auxiliary detection of the current position, image information of the inside of the room captured by the camera 107, which is stored and held in advance, and captured image information of the camera of the room of the current position. The image recognition processing unit 108 is configured to be able to use the result of pattern matching processing of and. As a result, the current position detector 110 can determine whether the electronic device body 2 is used in the study or the living room, even at the user's home, for example. In the company (workplace), it is possible to determine whether the electronic device body 2 is used in the seat of the user's own work place or in the conference room.

The timer unit 111 includes a clock circuit, and in this embodiment, monitors whether or not the time to shift to the sleep state (a set transition time to the sleep state) has elapsed for power saving. When the timer unit 111 detects that the time to shift to the sleep state has elapsed, the timer unit 111 notifies the control unit 101 to that effect.

In this example, the wireless LAN communication unit 112 has a Wi-Fi (registered trademark) communication function, has a function of accessing a website via the Internet, and has a function of accessing an in-house server or the like via an intranet such as an in-house LAN. Have.

The peeping prevention control processing unit 113 is driven by the control unit 101 when the line of sight of the peeper who does not have the usage right to the display screen 5a is detected, and the image displayed on the display screen 5a is correctly viewed. Display control or image control to prevent it.

Here, the display control in the peep prevention control processing unit 113 is a control for making the visibility of the image displayed on the display screen 5a worse, and in this embodiment, the screen is made dark. When the screen is to be darkened, the display screen 5a may be erased so that the screen becomes black.

The display control for reducing the visibility of the image displayed on the display screen 5a is not limited to the method of darkening the screen.
-Reduce the contrast and blur the image-Reduce the resolution of the display image-Shift the color balance and hue control (hue adjustment) to shift the color itself of the color display image-Scroll the screen, vibrate the screen, Processing such as lighting, shifting horizontal synchronization and vertical synchronization, and distorting an image may be performed.

Further, the image control in the peep prevention control processing unit 113 is control for changing the image from the original display image, and in this example, the image processing for preventing the image from being viewed correctly with respect to the original image. , For example, mosaic processing is performed. Here, the mosaic processing includes encryption processing.

Note that the control for transforming the image from the original display image is not limited to image processing such as mosaic processing that prevents the image from being viewed correctly with respect to the original image.
-Change the displayed image to a completely different image that may be seen by a snooper (others)-Even if you perform processing such as changing only part of the image displayed on the display screen Good.

Note that, in FIG. 2, each function of the LCD controller 103, the viewing angle controller 105, the image recognition processing unit 108, and the peep prevention control processing unit 113 is executed by the control unit 101 using a program stored in the memory 102. It can also be configured to be realized as a software function for executing.

[Example of Table Information in Display Display Control Table Storage Unit 1021]
FIG. 3 shows a legend of information stored as table information in the display display control table storage unit 1021 in this embodiment. As shown in FIG. 3, in this embodiment, as the table information, "table information" corresponds to each usage location type of the electronic device body 2 and each display content type displayed on the display screen 5a. Four types of setting information of "transition time to sleep state", "conditions to shift to sleep state", "viewing angle", and "method of peep prevention control" are set and registered in advance.

The usage location type is a location where the current location where the electronic device body 2 is used, such as a home where the electronic device body 2 can be used without being aware of the eyes of others, or a place with a predetermined limited environment such as a company. Type of place of use determined from the perspective of security and personal information protection and the relationship with the surrounding environment, such as inside a train or in a park, where it is always seen by strangers. Is. That is, the usage place type is also a type of place in which the degree to which the display image on the display screen is visible to others is different. In this example, the usage location type is associated with the location information of the location where the electronic device body 2 is scheduled to be used, and is used by the user such as “home”, “company”, “in train”, or the like. It is set by each of.

In addition, regarding the use place type such as "home" or "company" whose position is different depending on the user, the location information corresponds to the name of the use place type according to the user, and a predetermined memory area of the memory 102 (not shown). Registered). Therefore, if the current position of the electronic device body 2 is known, it can be determined whether or not the electronic device main body 2 is at the position of the use place type. In addition, as for the use location type irrelevant to the attribute of the user such as in a train, for example, by inquiring about the location using the current location information (latitude, longitude, etc.) via the Internet, it is determined whether or not the location is currently present Can be certified.

The display content type is content accompanied by operation input such as document creation (including editing), table creation, graph creation, graphic/drawing creation (input accompanying content), or content acquired through the Internet with confidentiality. Whether it is high content, low confidentiality even if it is obtained through the Internet, or whether the content obtained through the Intranet is restricted by the user ID or password. This is the type of content displayed on the display screen that is determined based on the relationship between personal information protection and the surrounding environment. That is, the display content type is also a type of display content in which the degree to which the display image on the display screen is visible to others is different.

Note that content acquired through the intranet can be freely accessed and viewed within the intranet, for example, within the company (workplace), but when accessed remotely and viewed outside the company (workplace). , Its contents are confidential information (confidential information). Therefore, even if the content has low confidentiality or no confidentiality inside the company, the content is highly confidential when viewed outside the company.

In the electronic device main body 2 of this embodiment, the user designates content that is highly confidential so that it can be determined whether or not the content has been obtained through the Internet and has high confidentiality. Then, the URL (Uniform Resource Locator) of the site that provides the content through the Internet is registered in advance and registered in a predetermined memory area (not shown) of the memory 102. When the control unit 101 of the electronic device main body 2 accesses the website of the URL registered as highly confidential through the Internet, the display content type is the content acquired through the Internet and the highly confidential content. Try to recognize that there is.

The control unit 101 can recognize the other display content types by determining the application program that provides the display content or by determining what the source of the display content is. Of course, even if the content is obtained through the intranet, it is possible to determine whether or not the content is highly confidential, as in the case of the Internet. Furthermore, even in the case of input incidental content, if the document, table, graph, figure, drawing, etc. clearly indicate “Handling”, “Confidential”, “Confidential”, etc., it is recorded that the attribute of the file is highly confidential. If so, it can be determined whether the content is highly confidential. It should be noted that the confidentiality is not limited to high and low, and may have a plurality of types such as “extremely high”, “high”, “medium”, “low”, “extremely low”, and “none at all”. Then, the transition time to the sleep state, the transition condition, the viewing angle, and the peep prevention control method can be set differently according to the confidentiality type.

As the display content type, in addition to the examples described above, browsing of mail, SNS, LINE (registered trademark), Twitter (registered trademark), blog, creation thereof, viewing of photos, viewing of television programs and videos It may be a game operation.

Next, of the setting information, "the transition time to the sleep state" means that when the time that is continuously displayed without changing the content of the display image is the set transition time or more, It is the time that is set as the transition to the state. For example, in the case of input accompanying content, when an input operation is performed, the newly input information is reflected in the display image and is changed, so the display image is changed during the transition time to the sleep state. It is reset at the time point and the remeasurement is started from that time point. That is, in the case of the input accompanying content, the transition to the sleep state is executed when the set transition time elapses without performing the input operation.

Further, in the case of content of a web page that is not the input accompanying content, the display image is changed by the user performing some operation input to change the web page. Therefore, in the case of content such as a web page, when the set transition time elapses while the same image content continues without any operation input by the user, the sleep state is entered. Migration is performed.

It should be noted that in the case of a moving image such as a television program or a video, the display image is constantly changed, so that the transition to the sleep state is not executed. Since these are contents intended for viewing for a long time, they are excluded from the contents of the power saving process. However, in this embodiment, by using the peeping prevention control processing unit 113, peeping prevention control can be performed from the viewpoint of security and protection of personal information, which is the case for moving images such as TV programs and videos. However, for example, it is possible to prevent peeping by changing the image. Even if the displayed image is a moving image, if it is possible to determine that the user is not watching the moving image by detecting the line of sight of the user, the user is not watching the moving image. If the state continues for a set predetermined time or longer, a transition to the sleep state may be made.

In addition, in this embodiment, the setting of the "condition for shifting to the sleep state" is based on whether or not the line of sight of the user who has the use right is directed to the display screen 5a within the set viewing angle. It is a setting of whether or not. When the condition is that the line of sight of the user who has the usage right is directed to the display screen 5a, the face authentication of the user is performed to determine whether or not the user has the usage right, and The line of sight is detected and it is determined whether or not the direction is toward the display screen 5a. Then, when the line of sight of the user who has the use authority is facing the display screen 5a, even if the set transition time to the sleep state is satisfied, the transition to the sleep state is not performed and the use authority is set. When the user's line of sight is not facing the display screen 5a and the set transition time to the sleep state is satisfied, the transition to the sleep state is executed.

Further, the “viewing angle” means setting of a viewing angle for preventing peeping. As described above, the “viewing angle” can be set in three ways: no switching control of viewing angle (viewing angle θmax), wide viewing angle θ1 (<θmax), and narrow viewing angle θ2 (<θ1).

Further, the setting of "method of peep prevention control" is the setting of display control or image control for peep prevention as described above.

FIG. 4 shows a specific example of the table information. In the example of FIG. 4, examples of usage place types include a study at home, a living room at home, a seat at one's own workplace of a company, a meeting room at a company, and a car such as a train. Of course, the usage location type is not limited to this, and it is used in other places of home, other places of the company, various vehicles, or museums, libraries, halls, hotels, restaurants, department stores, shops, parks, private use. There are various possibilities such as inside the car and on the road (while walking or stationary). Further, in a hotel, for example, the electronic device body 2 (electronic device 1) determines whether the guest room is a private room in which a user who has the right to use stays or a public place such as a lobby or a banquet hall. Since it can be identified using 110, the type of usage location can be certified such as "hotel guest room" "location other than hotel guest room", and based on that, the transition time to sleep state, transition conditions, viewing angle and peep The preventive control method can be set appropriately.

In addition, as the use location type, "place where there is a high risk of being peeped by another person (third person)", "place where there is a low risk of being peeped by another person", and "place where there is no risk of being peeped by another person" Can also In this case, it is advantageous to separately prepare table information or the like for associating with each place what kind of place it specifically indicates, and providing the electronic device body 2 with the table information. Alternatively, the camera 107 of the electronic device body 2 captures an image of the surroundings of the current position, recognizes the imaged surroundings to determine the risk of the location, and determines the risk determination result based on the control unit 101. It may be configured to be provided to.

In addition, in the example of FIG. 4, as examples of the display content type, input accompanying content, Internet content that has been set to be secret in advance, Internet content that is not set to be secret, company, etc. Content obtained from the Intranet, etc. are listed.

Then, as shown in FIG. 4, specific times such as 5 minutes and 3 minutes are set as the transition time to the sleep state. Further, the state in which the line-of-sight detection of the user who has the use right is set as the condition for shifting to the sleep state is referred to as “line-of-sight detection” in FIG. 4, and the line-of-sight detection of the user who has the use right is not required. 4 is set, the line of sight is not detected in FIG.

Regarding the setting of the viewing angle, “no control” means the setting of “viewing angle θmax”, “wide” means the setting of “viewing angle θ1”, and “narrow” means “viewing angle θmax”. θ2” is set.

Regarding the method of peep prevention control, "no control" means the setting that does not perform display control and image control of the peep prevention control, and "screen darkness" means that the display control of the peep prevention control does not It means the setting to control the screen to be dark so that the viewer cannot see the displayed image. “Image change” means that the displayed image is changed to another image by the image control of the peep prevention control. It means the setting to control.

In FIG. 4, specific times such as 5 minutes and 3 minutes are set as the transition time to the sleep state, but the set time is an example and can be set freely. Further, it is not an absolute time setting method such as 5 minutes, 3 minutes, etc., but “1/3 times, 1/2 times, 1 times It is also possible to use a relative time setting method such as "double, triple" or "-2 minutes, -1 minute, unchanged, +1 minute, +2 minutes, +5 minutes".

[Display Control Operation of Display Screen of Electronic Device Main Body 2 (Electronic Device 1) of Embodiment]
In this embodiment, the control unit 101 of the electronic device main body 2 uses the operation place type certifying operation, the display content type certifying operation, the table information acquisition operation of the display display control table storage unit 1021, and the display control of the display screen 5a. The operation (display control routine) is executed in parallel.

That is, the control unit 101 executes the operation of recognizing the use location type, for example, when the position information detected by the current position detection unit 110 changes. Then, the certified use location type is overwritten and stored in the use location type buffer 1022 of the memory 102, and the fact that the storage content of the use location type buffer 1022 is changed is notified.

Further, the control unit 101 executes the operation of recognizing the display content type by using a timing such as a change of an application program to be executed or a source of an image displayed on the display screen 5a as a trigger. Then, the certified display content type is overwritten and stored in the display content type buffer 1023 of the memory 102, and the storage content of the display content type buffer 1023 is notified.

Then, the control unit 101 stores the display display control table based on the notification that the storage content of the use location type buffer 1022 has been changed and/or the notification that the storage content of the display content type buffer 1023 has been changed. The table information acquisition operation of the unit 1021 is executed. Then, the control unit 101 stores, from the display display control table storage unit 1021, “time to transition to sleep state” and “sleep” corresponding to the usage location type of the usage location type buffer 1022 and the display content type of the display content type buffer 1023. The four types of setting information of "condition for transition to state", "viewing angle", and "method of peep prevention control" are acquired and passed to the display control processing routine as data.

Then, the control unit 101 executes the display control using the acquired four types of setting information in the display control routine of the display screen 5a. Each processing operation will be further described below.

[Certification operation according to location of use]
FIG. 5 is a flowchart showing a flow of an example of the operation of recognizing the usage place type. Hereinafter, with reference to FIG. 5, the operation of recognizing the use location type will be described.

First, the control unit 101 acquires the current position information detected by the current position detection unit 110 (step S1). Next, the control unit 101 recognizes the corresponding use location type from the detected current position information (step S2). As to the approval of the type of place of use in step S2, as described above, first, the correspondence information between the type of place of use and the current position stored in the memory 102 is confirmed. In the present embodiment, when it is not possible to certify from the correspondence information between the type of use place and the current position, the wireless LAN communication unit 112 accesses the place search site on the Internet to send the current position information for handling. The location type is certified by acquiring the location information.

Next, the control unit 101 overwrites and stores the usage location type authorized in step S2 in the usage location type buffer 1022, and notifies that the usage location type has been rewritten (step S3). Next, the control unit 101 determines whether or not the electronic device body 2 has moved by detecting a change in the position information detected by the current position detection unit 110 (step S4).

When it is determined in step S4 that the electronic device body 2 has moved, the control unit 101 acquires the current position information detected by the current position detection unit 110 (step S5), and then, based on the detected current position information, a step Similar to the processing in S2, the corresponding usage place type is certified (step S6).

Next, the control unit 101 determines whether or not the usage place type identified in step S6 has changed from the usage place type stored in the usage place type buffer 1022 (step S7). When it is determined in step S7 that the type of place of use has not changed, the control unit 101 returns the processing to step S4 and performs the processing of step S4 and thereafter. When it is determined in step S7 that the type of use place has changed, the control unit 101 returns the process to step S3 and repeats the processes of step S3 and thereafter.

When it is determined in step S4 that the electronic device body 2 is not moving, the control unit 101 determines whether the power is turned off (step S8), and it is determined that the power is not turned off. If so, the process is returned to step S4, and the processes after step S4 are repeated. When it is determined that the power is turned off, this process routine is ended.

[Certified operation of display content type]
FIG. 6 is a flowchart showing the flow of an example of the operation of recognizing the display content type. Hereinafter, the certifying operation of the display content type will be described with reference to FIG.

First, the control unit 101 determines the display content displayed on the display screen 5a by determining the application program being activated and the source of the display image (step S11), and certifies the display content type (step). S12).

Next, the control unit 101 overwrites and stores the display content type certified in step S12 in the display content type buffer 1023, and notifies that the display content type has been rewritten (step S13). Next, the control unit 101 determines whether the display content of the display screen 5a has been changed by detecting whether the application program or the source of the display image has been changed (step S14).

When it is determined in step S14 that the display content of the display screen 5a has been changed, the control unit 101 determines the display content displayed on the display screen 5a (step S15) and certifies the display content type (step S16). )
Next, the control unit 101 determines whether the display content type certified in step S16 has been changed from the display content type stored in the display content type buffer 1023 (step S17). When it is determined in step S17 that the display content type has not been changed, the control unit 101 returns the processing to step S14, and performs the processing of step S14 and thereafter. When it is determined in step S17 that the display content type has been changed, the control unit 101 returns the processing to step S13 and repeats the processing of step S13 and thereafter.

When it is determined in step S14 that the display content of the display screen 5a has not been changed, the control unit 101 determines whether the power is turned off (step S18), and the power is not turned off. When it is determined that the power is turned off, the processing is returned to step S14, and the processing after step S14 is repeated. When it is determined that the power is turned off, the processing routine is ended.

[Operation of Obtaining Table Information in Display Display Control Table Storage Unit 1021]
FIG. 7 is a flowchart showing a flow of an example of an operation of acquiring table information of the display display control table storage unit 1021. Hereinafter, the operation of acquiring the table information of the display display control table storage unit 1021 will be described with reference to FIG. 7.

The control unit 101 first certifies the use location type stored and held in the use location type buffer 1022 (step S21). Next, the control unit 101 recognizes the display content type stored and held in the display content type buffer 1023 (step S22).

Next, the control unit 101 refers to the table information in the display display control table storage unit 1021 of the memory 102 according to the authorized use location type and display content type (step S23), and the corresponding transition time to the sleep state and The setting information of the transition condition, the setting information of the corresponding viewing angle and the peep prevention control are acquired, and the acquisition notification of the setting information is notified (step S24).

Next, the control unit 101 monitors the change notification of the stored content in the use location type buffer 1022 or the display content type buffer 1023 to determine whether the stored content has been changed (step S25). When it is determined in step S25 that the contents held in the use location type buffer 1022 or the display content type buffer 1023 have been changed, the control unit 101 returns the process to step S21 and repeats the processes from step S21. Therefore, every time the stored content of the use location type buffer 1022 or the display content type buffer 1023 is changed, the control unit 101, in step S24, sets the transition time to the sleep state and the setting information of the transition condition, Further, since the setting information of the corresponding viewing angle and the peep prevention control is acquired, the acquisition notification of the setting information issued in step S24 is also a notification of the change of the acquired setting information.

When it is determined in step S25 that the contents held in the use location type buffer 1022 or the display content type buffer 1023 are not changed, the control unit 101 determines whether the power is turned off (step S26), and the power is turned on. When it is determined that the power is not turned off, the processing is returned to step S25, the processing after step S25 is repeated, and when it is determined that the power is turned off, this processing routine is ended.

[Display control operation of display screen]
FIG. 8 and FIG. 9 which is a continuation of FIG. 8 are flowcharts showing the flow of an example of the display control operation of the display screen 5a. The display control operation of the display screen 5a will be described below with reference to FIGS.

The control unit 101 first displays a screen prompting the user to perform face authentication (step S101). Next, the control unit 101 captures a face image of the user with the camera 107, and by using the function of the image recognition processing unit 108, by using the face image of the user stored in the authentication face image storage unit 109. Face authentication is performed to authenticate whether or not the user to be authenticated is a user who is authorized to use (step S102). Next, the control unit 101 determines whether the authentication is OK (step S103).

When it is determined in step S103 that the user to be authenticated is not a user who is authorized to use (authentication NG), the control unit 101 returns the process to step S101 and repeats the process from step S101. Further, when it is determined in step S103 that the user to be authenticated is a user who has the authorization to use (authentication is OK), the control unit 101 permits the use of the electronic device body 2 and performs the instruction operation of the user. The corresponding image is displayed on the display screen 5a (step S104).

Next, the control unit 101 shifts to the sleep state acquired by the operation of acquiring the table information of the display display control table storage unit 1021 described in FIG. 7 and its condition, and the viewing angle and the peep prevention control. By recognizing the setting information, execution of each control of the transition control to the sleep state, the viewing angle switching control, and the peep prevention control is started (step S105).

Here, in step S105, the control unit 101 controls the viewing angle controller 105 so that the viewing angle selected according to the type of use location and the type of display content is set by the setting information acquired in step S105. To That is, as shown in FIG. 4, for example, when the display content type is input accompanying content and the usage place type is a study at home, the viewing angle is set to the widest θmax. If the location type is the company's own seat, the viewing angle is switched to a relatively wide θ1 that is narrower than θmax, and if the usage location type is a train, the viewing angle is θ2 that is narrower than θ1. Can be switched to. As a result, the viewing angle of the display screen 5a is set to an appropriate viewing angle depending on the presence or absence of a spectator and the number thereof depending on the type of usage place. In addition, the viewing angle of the display screen 5a is set to an appropriate viewing angle according to the display content type and the degree of security of the display content.

Next, the control unit 101 executes the transition control to the sleep state and the peep prevention control based on the monitoring operation in step S106 below. That is, the control unit 101 performs an operation of monitoring whether or not the operation input is continued for more than the transition time to the sleep state, and the line of sight of the user (authentication user) who has been authenticated the usage authority is continuously. The setting information acquired in step S105 in the operation of monitoring whether there is more than the transition time to the sleep state, the operation of monitoring the line of sight within the set viewing angle of the display screen 5a of the person other than the authenticated user Accordingly, necessary operations are executed in parallel (step S106). In step S106, the control unit 101 also determines whether or not the display image on the display screen 5a is an image that is changed every moment, such as a moving image.

Next, the control unit 101 determines whether or not the transition condition is satisfied and the transition time to the sleep state has elapsed (step S107). Then, when it is determined that the transition condition is satisfied and the transition time to the sleep state has elapsed, the control unit 101 controls to transition to the sleep state (step S108).

As shown in FIG. 4, the transition time to the sleep state and the transition condition are set differently according to the type of place of use and the type of display content. Therefore, the transition control to the sleep state is performed by the electronic device main body. No. 2 is used, and the display contents displayed on the display screen 5a are appropriate. For example, in the case of input accompanying content, the user is likely to perform input work while thinking, so in an environment where there are few spectators, the line of sight of the user may shift the display screen 5a during the transition time to the sleep state. As long as you are facing, it is better to be relatively long. However, in a train or the like where there are many peepers, it seems that the transition time to the sleep state should be relatively short regardless of whether or not the user's line of sight is facing the display screen 5a. According to the present invention, the transition time to the sleep state and the transition condition can be set according to the display content type and the usage place type, which is very convenient.

Next, the control unit 101 determines whether or not a condition for canceling the sleep state is satisfied (step S109), and if it is determined that the condition for canceling the sleep state is not satisfied, the control unit 101 sets the sleep state. When it is determined that the sleep condition is satisfied and the sleep condition is satisfied, the process is returned to step S101, and the processes after step S101 are repeated. In this example, the sleep state release condition is that the control unit 101 detects that the user has performed some operation input.

Further, when it is determined in step S107 that the transition time to the sleep state in the state where the transition condition is satisfied has not elapsed, the control unit 101 controls the display screen 5a within the set viewing angle of the display screen 5a. It is determined whether or not the line of sight of a person other than the authenticated user who faces the direction is detected (step S111 in FIG. 9). When it is determined in step S111 that the line of sight of a person other than the authenticated user who faces the display screen 5a within the set viewing angle of the display screen 5a is detected, the control unit 101 recognizes in step S105. The peeping prevention control selected by the set peeping prevention control setting information is executed (step S112).

That is, in this embodiment, the viewing angle is set to an appropriate viewing angle according to the type of use place and the type of display content, so that the peeping by the snooper can be prevented as much as possible, and the display screen 5a When the line of sight of the peeper within the set viewing angle is detected, that is, when it is detected that the peeper is actually observing the display image on the display screen 5a, display control and image control are performed. By performing the peeping prevention control by, the display image is made difficult to see or the display image is not shown as another.

That is, in the example of FIG. 4, when the display content type is the input accompanying content, the peeping prevention control is set not to be performed when there is no fear of peeping in the study at home, and it is set at the company's own desk or the meeting. In the room, display control is set to darken the image so that it is hard to see even if it is peeped, and the display image is changed so that peeping by a peeper can be completely prevented in the train or other vehicle. Therefore, even if the display content type is the same, appropriate peep prevention control is executed according to the usage place type.

In addition, in the example of FIG. 4, in the example of FIG. 4, the former is “screen dark” and the latter is Is set as "image transformation", and appropriate peep prevention control according to the display content type is executed. In this case, it goes without saying that the Internet contents include moving image contents such as moving image sites and Internet television.

Therefore, according to this embodiment, there is an effect that it is possible to appropriately prevent the peeping by the peeper depending on the type of use place and the type of display content. As a matter of course, the effect of being able to prevent the sneak peek by the snooper can be achieved by using only the use location type or only the display content type.

After step S112, the control unit 101 determines whether or not the line of sight of a person other than the authenticated user within the viewing angle cannot be detected (step S113). When it is determined in step S113 that the line of sight of the person other than the authenticated user within the viewing angle is not in the undetectable state, the control unit 101 returns the process to step S112 to perform the peep prevention control. continue.

When it is determined in step S113 that the line of sight of the person other than the authenticated user within the viewing angle cannot be detected, the control unit 101 ends the peep prevention control and is selected by the setting information. The state of the viewing angle is restored (step S114). Then, after step S114, the control unit 101 returns the processing to step S106, and repeats the processing of step S106 and thereafter.

When it is determined in step S111 that the line of sight of a person other than the authenticated user who faces the display screen 5a within the set viewing angle of the display screen 5a is not detected, the control unit 101 determines that the setting information It is determined whether or not the acquisition notification (notification of setting information change) has been detected (step S115).

When determining in step S115 that the setting information acquisition notification (setting information change notification) is not detected, the control unit 101 returns the processing to step S106, and repeats the processing from step S106.

When it is determined in step S115 that the setting information acquisition notification (setting information change notification) is detected, the control unit 101 returns the process to step S105, recognizes the changed setting information, and The processing after S105 is repeated.

[Effect of Embodiment]
As described above, according to the above-described embodiment, it is possible to realize an electronic device capable of changing to a power saving state in an appropriate predetermined time according to the type of place of use. Further, it is possible to provide an electronic device capable of changing to a power-saving state in an appropriate predetermined time according to a display content type as well as a use place type.

In addition, in the above-described embodiment, regarding the measurement of the transition time to the sleep state, the presence or absence of the line of sight of the display screen 5a of the user who is authorized to use is attached as a condition. It is possible to control the transition to the sleep state in consideration of.

Further, according to the electronic device of the above-described embodiment, the viewing angle with respect to the display image can be controlled to be an appropriate viewing angle according to the type of place of use, and the third person's peep is detected. At times, it is possible to effectively prevent a sneak peek by a snooper by performing display control and image control corresponding to the usage place type and the display content type.

[Other Embodiments or Modifications]
In the above embodiment, the transition time to the sleep state, the transition condition, the viewing angle, and the peep prevention control method according to the type of the use place are all set in advance by the user as table information. However, the table information may be stored in advance in the memory 102 of the electronic device 1 at the time of shipping or selling. In addition, a part of the table information may be stored at the time of shipment or at the time of sale, and the user may add the use location type, the display content type, and the setting information to the table information.

In the above-described embodiment, the setting information of the table is set so as to correspond to both the usage place type and the display content type. However, the table information may be table information including setting information corresponding to only the usage location type, or may be table information including setting information corresponding to only the display content type.

Further, part or all of the table information may be configured as a cloud on the Internet instead of the memory 102. In this case, the electronic device 1 includes a communication unit that performs communication via the Internet, and connects to the server device having the table information via the Internet.

In the above-described embodiment, the image recognition processing unit 108 and the authentication face image storage unit 109 are built in the electronic device 1. However, similar to the above, a part or all of each processing and storage is stored in the cloud on the Internet. May be configured.

In the above-described embodiment, the sleep state release condition is described as an example in which the control unit 101 detects that the user has performed some operation input. However, the present invention is not limited to this, and the line of sight of a user who has usage authority is detected. It may be done. Further, detection of both the operation input and the line of sight of the user who has the authority to use can be a release condition. In addition, when the sleep state is released, it is possible to set conditions to perform user authentication such as password authentication, face authentication, voice recognition, biometric authentication such as fingerprint or iris.

Further, the sleep state cancellation condition may be set in advance according to the type of use place or the type of display content, and may be stored and held in the table information. In this case, the sleep condition release condition may be set by the user, or may be created in advance by the manufacturer or sales company of the electronic device 1. Therefore, in that case, the cancellation condition can be changed in accordance with the type of use place and the type of display content. Then, by making the release condition more difficult to release, it is possible to effectively prevent the peeping even if the peeping by the peeper continues even in the sleep state. it can.

Further, as described above, the state in which the image on the display screen is not displayed to save power is not limited to the sleep state, and may be in the hibernation state or the power off state described above. Good. Of course, it is also possible to set the sleep state, the sleep state, and the power-off state as different states, and set the transition time and transition conditions to a plurality of states. In this case, the relationship of the length of each transition time is generally
The transition time to the sleep state≦the transition time to the sleep state≦the transition time to the power off state.

Further, the viewing angle switching means of the display screen 5a used in the above-described embodiment is an example, and the present invention is not limited to this, and any device can be used as long as the viewing angle of the display screen can be controlled. It may be one.

Further, it goes without saying that the electronic device of the present invention is not limited to the electronic device 1 described above, and may be any electronic device that has a display screen and is portable. In addition, even if an electronic device that is too large to be called a portable electronic device, such as a desktop PC, can be carried using a car, the present invention provides a portable electronic device that can be carried. Can be applied.

The present invention provides a portable electronic device or a portable electronic device when performing display control or image control corresponding to a usage place type, and when performing display control or image control corresponding to a usage place type or display content type. However, when display control or image control corresponding to only the display content type is performed, portability or portability is not necessarily required. That is, in this case, any electronic device having a display screen may be used.

DESCRIPTION OF SYMBOLS 1... Electronic device, 2... Electronic device main body, 5... LCD, 5a... Display screen, 7... Viewing angle switching panel, 101... Control part, 102... Memory, 107... Camera, 108... Image recognition processing part, 109... Authentication Face image storage unit, 110... Current position detection unit, 111... Timer unit, 113... Peep prevention control processing unit

Claims (11)

A display unit having a display screen,
Current position detection means for detecting the current position,
The current position detected by the current position detection means, use location type certifying means for certifying which of a plurality of preset use location types,
Viewing angle control means for controlling the viewing angle of the display screen,
The stores the information of the viewing angle of the display screen, the point of use of the view image corresponding to the type transformation aspects and / or visibility deteriorates table information storage for storing table information for storing the mode corresponding to the use location Type Department,
Acquisition means for acquiring from the table information storage unit information on the viewing angle corresponding to the type of use place certified by the use place type certifying unit, and a transformation mode and/or a visibility deterioration mode of the image.
Image processing means for transforming the image displayed on the display screen to prevent peeping and/or to deteriorate visibility.
The viewing angle of the display screen is controlled by the viewing angle control means based on the information of the viewing angle corresponding to the usage location type acquired by the acquisition means, and the viewing location of the usage location type acquired by the acquisition means. Control means for controlling the image processing means so as to transform the image in a corresponding transformation mode and/or to deteriorate the visibility in a visibility deterioration mode;
An electronic device comprising: And a line-of-sight detection unit that detects the line of sight of a person other than the user who has the authority to use within the viewing angle of the display screen controlled by the viewing angle control unit.
The control means, when the line-of-sight detection means detects the line of sight of a person other than the user who has the use authority, transforms the image in a transformation mode corresponding to the use place type acquired by the acquisition means. And/or the image processing unit is controlled so as to deteriorate the visibility in a manner in which the visibility is deteriorated. The electronic device according to claim 1, wherein the image processing unit controls the image processing unit. When the control means is in a state in which the line-of-sight detection means cannot detect the line-of-sight of a person other than the user who has the use right within the viewing angle of the display screen, the image of the transformed display screen is displayed. The electronic device according to claim 2 , further comprising a function of returning the image to the original image. Transformation aspects of the image, aspect of mosaic images, aspects of changing the image to another, aspect of changing the part of the image only, embodiments for processing encrypted image, or its combination of these The electronic device according to any one of claims 1 to 3, which includes an aspect. The image visibility deterioration mode includes a mode in which the screen is darkened, a mode in which the image is blurred by reducing the contrast, a mode in which the resolution of the image is reduced, a mode in which the color of the color image is shifted, a mode in which the screen is scrolled, and a mode in which the screen is vibrated. The electronic device according to any one of claims 1 to 4, including a mode of illuminating a screen, a mode of shifting horizontal synchronization and/or a vertical synchronization, a mode of distorting an image, or a mode of a combination thereof. machine. The use place type includes a type of place of use defined based on security, personal information protection, confidentiality, confidentiality, or surrounding environment. The electronic device according to any one of 5. A correspondence storage unit that stores the position information and the use location type in association with each other;
The use place type certifying means obtains the use place type associated with the current position detected by the current position detecting means from the correspondence storage unit and certifies the use place type. The electronic device according to any one of claims 1 to 6. The use location type certifying means acquires a location corresponding to the current position detected by the current position detecting means through the Internet, and certifies the use location type from the acquired location corresponding to the current position. The electronic device according to any one of claims 1 to 7, which is characterized. A display content type certifying means for certifying the display content type of the image being displayed on the display screen,
The table information of the table information storage unit stores the information of the viewing angle corresponding to the display content type in addition to the usage place type,
The acquisition means acquires information on the viewing angle corresponding to the use location type authorized by the use location type authorization means and the display content type authorized by the display content type authorization means,
The control means controls the viewing angle control means based on the viewing angle information of the display screen obtained by the obtaining means, the viewing angle information corresponding to the type of use place and the display content type. The electronic device according to any one of claims 1 to 8. A display unit having a display screen, a current position detection unit for detecting the current position, a viewing angle control unit for controlling the viewing angle of the display screen, and information on the viewing angle of the display screen corresponding to the type of place of use are stored. while, the table information storing unit for storing the table information for storing the transformation aspects and / or visibility deterioration aspects of images corresponding to the use location type, the image displayed on the display screen, a peep A method for controlling display of the display screen of an electronic device, comprising: an image processing unit that transforms to prevent and/or deteriorates visibility, a place-of-use type recognizing unit, an acquiring unit, and a controlling unit. There
The use location type certifying means, the use location type certifying step of certifying whether the current position detected by the current position detecting means is one of a plurality of preset use location types,
An acquisition step in which the acquisition means acquires, from the table information storage unit, information on the viewing angle corresponding to the usage location type certified in the usage location type certification step;
The control unit controls the viewing angle control unit based on the information of the viewing angle corresponding to the use place type acquired in the acquisition process, and acquires the viewing angle of the display screen in the acquisition process. A control step of controlling the image processing means so as to transform the image in a transformation mode corresponding to the type of use place and/or to deteriorate the visibility in a visibility deterioration mode;
A display control method for a display screen of an electronic device, comprising: A display unit having a display screen, a current position detection means for detecting the current position, a viewing angle control means for controlling the viewing angle of the display screen, and information about the viewing angle of the display screen corresponding to the type of place of use are stored. while, the table information storing unit for storing the table information for storing the transformation aspects and / or visibility deterioration aspects of images corresponding to the use location type, the image displayed on the display screen, a peep A computer included in an electronic device including: an image processing unit that transforms the image to prevent it and/or deteriorates visibility.
A use location type certifying step of certifying which of a plurality of preset use location types the current position detected by the current position detecting means is,
An acquisition step of acquiring information on the viewing angle corresponding to the usage location type certified in the usage location type certification step, and a transformation mode and/or a visibility deterioration mode of the image from the table information storage unit,
The viewing angle of the display screen is controlled by the viewing angle control means based on the information of the viewing angle corresponding to the usage location type acquired in the acquisition step, and the viewing location of the usage location type acquired in the acquisition step. A control step of controlling the image processing means so as to transform the corresponding image in a transformation mode and/or to deteriorate the visibility in a visibility deterioration mode;
A program for controlling the display of the display screen of the electronic device for executing.

Images