JP2012146272A - Electronic apparatus, control method thereof, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the peep of a partial screen which must not be peeped by the intention of a user and also allow the user to access the part by a predetermined operation.SOLUTION: An electronic apparatus includes an operation unit 6, a display unit 5, and a control unit 7 for changing brightness of a partial area of a screen displayed on the display unit 5. In the state where the brightness of a partial area of the screen is changed to be lower compared with brightness of other areas, the control unit 7 cancels change in the brightness of a partial area of the screen according to operation by the operation unit 6.

Description

  The present invention relates to an electronic device that prevents peeping into a display unit, a control method thereof, and a program.

  2. Description of the Related Art Conventionally, a film configured to allow viewing of a display surface only from a predetermined angle is attached to the display surface of a mobile phone to prevent a person other than the operator from looking into the screen.

  Further, as another method for preventing peeping, for example, one described in Patent Document 1 is known. This Patent Document 1 describes a technique for preventing peeping by narrowing the viewing angle of the entire screen. Patent Document 1 describes that a liquid crystal cell serving as a filter for narrowing the viewing angle of the entire screen is provided, and the viewing angle of the entire screen is narrowed by controlling the liquid crystal cell. Yes.

JP-A-9-105958

  However, in Patent Document 1 described above, since the viewing angle of the entire screen becomes narrow and it becomes difficult to see the entire screen, there is a problem that it is inconvenient for a user who does not want to look into only a part of the screen.

  Therefore, the present invention provides an electronic device that can prevent a user from peeping at a part of the screen that the user does not want to peep at, and that allows the user to view the part by a predetermined operation, and a control method and program thereof. Objective.

  In order to solve the above problems, an electronic apparatus according to the present invention includes an operation unit, a display unit, and a control unit that changes the brightness of a part of the area displayed on the display unit. In the state where the brightness of the partial area of the screen is changed to be lower than the brightness of the other areas, the control unit is configured to change the partial area of the screen according to the operation by the operation unit. Cancel the brightness change.

  In the electronic apparatus, the operation unit is a touch sensor superimposed on the display unit, and the control unit detects the contact with a part of the area where the brightness is changed by the touch sensor. It is preferable to cancel the change in the brightness of the area.

  In the electronic device, when the first time has elapsed since the change in the brightness of the partial area of the screen is canceled, the control unit is in a state before canceling the brightness of the partial area. It is preferable to return to.

  Moreover, in the said electronic device, it is preferable that the said control part returns to the state before canceling the brightness of the one part area | region of the said screen gradually as it approaches 1st time after the change of the said brightness was cancelled | released. .

  In the electronic apparatus, it is preferable that the control unit sets the length of the first time according to the type of character string included in a partial area of the screen.

  In the electronic device, it is preferable that the control unit changes a brightness of the part with a part satisfying a predetermined condition as a part of the display part in the screen displayed on the display unit. .

  In the electronic device, the portion satisfying the predetermined condition is preferably a portion including a predetermined character string.

  In the electronic device, it is preferable that when the brightness of a part of the area including the predetermined character string is changed, the control unit changes the brightness of a part including the character string adjacent to the character string. .

  In the electronic device, when the character string is included in the partial area where the lightness is changed, the control unit is configured to change the size of the partial area where the lightness is changed based on information on the character string. Is preferably adjusted.

  The electronic device further includes a communication unit, and the control unit displays the predetermined image on the display unit when a predetermined image is attached to the mail received by the communication unit. It is preferable to change the brightness of the portion.

  Moreover, in the said electronic device, it is preferable that the said brightness is a contrast ratio or a brightness | luminance.

  In the electronic device, the display unit is preferably an organic EL display unit or a liquid crystal display unit.

  Moreover, in order to solve the said subject, the control method which concerns on another invention is an operation part, a display part, and the control part which changes the brightness of the one part area | region among the screens displayed on the said display part, In a method for controlling an electronic device comprising: a state in which the brightness of a part of the screen is changed to be lower than the brightness of another region, the one of the screens is controlled according to an operation by the operation unit. A step of canceling the change in brightness of the area of the part.

  Further, a program according to another invention is a program for controlling an electronic device including an operation unit, a display unit, and a control unit that changes the brightness of a part of the screen displayed on the display unit. In the state where the brightness of the partial area of the screen is changed to be lower than the brightness of the other areas, the brightness of the partial area of the screen is changed according to the operation by the operation unit. Means for releasing.

  According to the present invention, it is possible to prevent a part of the screen that the user does not want to be peeped from, and to make the part visible to the user by a predetermined operation.

1 is an external perspective view of a mobile phone that is an example of an electronic apparatus according to the invention. It is a functional block diagram which shows the functional structure of the mobile telephone which concerns on this embodiment. It is a schematic diagram which shows an example of the display screen which displayed the mail to transmit. It is a schematic diagram which shows an example of the display screen which displayed the received mail. It is a schematic diagram which shows another example of the display screen which displayed the received mail. It is the flowchart which showed the flow of a series of operation | movement which concerns on the transmission process of the mail in a mobile telephone. It is a flowchart which shows the flow of the operation | movement which concerns on the display process of the mail received in the mobile telephone.

  Embodiments of the present invention will be described below. FIG. 1 is an external perspective view of a mobile phone 1 which is an example of an electronic apparatus according to the present invention. In the following, the mobile phone 1 will be described. However, the present invention is not limited to this, and any display device may be used. For example, PHS (Personal Handy phone System), PDA (Personal Digital Assistant). ), Or a notebook computer.

As shown in FIG. 1, the mobile phone 1 according to the present embodiment includes a touch panel 2, a microphone 3, and a speaker 4.
The touch panel 2 is configured by superposing the display unit 5 and the operation unit 6.

  The display unit 5 is composed of an organic EL (Electro-Luminescence) panel. For example, an address book, a destination telephone number when making a call, a source telephone number when receiving a call, and contents of received mail and outgoing mail Is displayed.

  Further, the display unit 5 is configured to be able to change the contrast ratio or luminance of the screen, and is also configured to be able to change a part of the screen. That is, the display unit 5 is configured to be able to change the brightness for a partial area of the screen. Here, lightness is one of the attributes of a color and is the degree of lightness or darkness of the color. When the brightness is represented by a numerical value, the higher the numerical value, the brighter the screen becomes white, and the lower the numerical value, the lighter the screen becomes blacker. That is, on the screen, the higher the brightness, the easier it is to see, and the lower the brightness, the harder it is to see. In the present invention, when the peeping is prevented by utilizing the characteristic relating to the brightness, the brightness is changed to be low.

The operation unit 6 is configured as a touch panel 2 (touch sensor) that can transmit an image displayed on the display unit 5 and receives an operation input by pressing.
The microphone 3 inputs voice in a call.
The speaker 4 outputs sound in a call.

  In the cellular phone 1 configured as described above, it is possible to prevent a peep by making it difficult to partially view the screen according to the contents of the screen, and it is possible to view a screen that is partially difficult to see by a user's desired operation. It has a function that can be. Note that, hereinafter, the mobile phone 1 according to the present embodiment is used on both the transmitting and receiving sides, a mail is created on the transmitting side mobile phone 1 and transmitted to the receiving side mobile phone 1, and the received mail is sent to the receiving side. An example of browsing with the mobile phone 1 will be described.

  First, a functional configuration for changing the brightness of a part of the mail after determining the mail content in the mobile phone 1 on the mail transmission side will be described with reference to FIGS. FIG. 2 is a functional block diagram showing a functional configuration of the mobile phone 1 according to the present embodiment. FIG. 3 is a schematic diagram illustrating an example of a display screen displaying a mail to be transmitted. Specifically, FIG. 3A is a schematic diagram of the display screen before changing the brightness, and FIG. 3B is a schematic diagram of the display screen after changing the brightness. In FIG. 3 and FIG. 4 to be described later, a portion where the brightness is changed to be low is indicated by hatching.

In addition to the configuration described above, the mobile phone 1 includes a control unit 7, a storage unit 8, and a communication unit 9, as shown in FIG.
The control unit 7 controls the display unit 5 so as to change the brightness of some areas of the displayed screen to be lower than the brightness of other areas.

The storage unit 8 stores values before changing the brightness of a partial area of the screen, stores address book data, character data, and operations on the touch panel 2 (operation unit 6) and uses them for subsequent control. Stores various data such as data.
The communication unit 9 is configured to be able to send and receive data such as emails and calls.

  In the mobile phone 1 configured as described above, when the user performs an operation of designating an area where the brightness of the screen is desired to be lowered, the display unit 5 is controlled so as to lower the brightness of the designated area. At this time, the storage unit 8 stores data of the area where the brightness of the screen is lowered, data of the brightness value which is lowered, and data of the brightness value before being lowered. These data are used, for example, in a device attached to the data of the mail to be transmitted and receiving the mail, or used in the browser display.

  Specifically, by performing an operation for designating an area such as tracing the touch panel 2 (hereinafter referred to as swipe), for example, as shown in FIG. In addition, the brightness of the designated area is changed to be low. In the present embodiment, the operation for designating the area is configured by an operation of swiping the touch panel 2, but is not limited thereto. The operation for designating the area may be an explicit operation for lowering the brightness. For example, when the operation unit 6 is configured as an operation button, the area can be specified by operating the button. .

  Further, in the cellular phone 1, when returning the brightness of the area where the brightness is lowered to the brightness before the brightness is lowered, for example, as in the operation of reducing the brightness, swipe the area where the brightness is lowered. It can be configured to be performed by operation. As a result, the state returns to the state before the brightness is lowered, and the user can view the screen.

Therefore, in the mobile phone 1, in a state where the brightness of the screen is low, the user and a third party located around the user cannot view the low brightness area and can prevent the third person from peeping.
On the other hand, when the operator of the cellular phone 1 wants to see an area with low lightness, if the operation for specifying the low lightness area is performed, the change in lightness of the specified area is canceled, so that the user timing It becomes possible to browse.

  Further, in the mobile phone 1, the background color of the designated area is not changed, and the brightness of the area is changed as hardware, so that it does not depend on the type of application. Can be used. For this reason, in the mobile phone 1, the same display can be performed in various devices regardless of the installed application.

Further, in the mobile phone 1, the brightness of the part is changed with a part satisfying a predetermined condition as a partial area of the display part 5 in the screen displayed on the display part 5 by the control part 7.
Therefore, in the mobile phone 1, for example, a region that satisfies a predetermined condition including text characters, proper nouns, data registered in the address book, and the like can be determined and a region with low lightness can be automatically set. . For this reason, the user does not need to specify an area for changing the brightness. Note that the above operation may be executed by a server or a terminal that has received data on the network, for example, in data such as mail via the network.

In the mobile phone 1, the portion satisfying the predetermined condition can be configured as a portion including a predetermined character string.
Therefore, in the mobile phone 1, when the predetermined condition is configured as a text character, for example, the brightness of the text character displayed on the screen is automatically changed to a low value. As a specific example, when “Merry ★ Date Iko! Christmas” is a text character when composing an email, the text displayed on the screen from the state shown in FIG. By determining the character, the brightness of the area related to the text character as shown in FIG. 3B can be automatically changed.

  In the mobile phone 1, when the predetermined condition is configured as a proper noun, for example, the proper noun displayed on the screen is analyzed and the brightness of the proper noun is automatically changed to a low value. As a specific example, when a predetermined condition is configured as a proper noun, it is possible to automatically change the brightness of the region related to the proper noun “Taro”.

  In the cellular phone 1, when the predetermined condition is configured as, for example, character data stored in the storage unit 8, the character data displayed on the screen is analyzed, and the brightness related to the character data is automatically set. Change to low. As a specific example, when the character data stored in the storage unit 8 for a predetermined condition is “date”, the brightness of the area related to “date” can be automatically changed.

In the cellular phone 1, when the brightness of a part of the area including the predetermined character string is changed, the control unit 7 changes the brightness of a part including the character string adjacent to the character string.
Therefore, for example, when the brightness of the area related to “tallow” is automatically changed as a proper noun from the state shown in FIG. 3B, as shown in FIG. 3B, it is adjacent to “tallow”. Also change the brightness of the “more” part.
Therefore, in the mobile phone 1, for example, even when the user forgets to designate a region where the brightness is to be lowered, it is possible to reliably detect the region related to the portion where the brightness is desired to be lowered and automatically reduce the brightness. . Further, by changing the brightness of the adjacent character string, it is possible to prevent the character string that is not desired to be peeped from being analogized from the adjacent character string. The adjacent characters may not be adjacent to each other but may be upper and lower.

  Further, in the mobile phone 1, when a character string is included in the partial area whose brightness is changed, the control unit 7 adjusts the size of the partial area based on the information of the character string. Therefore, in the cellular phone 1, since the area for changing the brightness is set in accordance with the character string information (font, size, etc.), the brightness is not changed in the extra area. In addition, even when the font or the like is changed by the user setting, the size of the area is updated by referring to information on the changed character string each time.

Further, in the mobile phone 1, the control unit 7 changes the brightness of the portion where the predetermined image is displayed on the display unit 5 when the predetermined image is attached to the received mail.
Therefore, in the mobile phone 1, for example, when a predetermined image is configured as an image of a heart, the state of the heart is changed from the state shown in FIG. 3A to the heart as shown in FIG. The brightness of the area related to the design image can be automatically changed to a low value. The above-described operation is premised on being performed at the mail transmission side terminal, but is not limited thereto, and may be performed at the reception side terminal.

  Next, a case where the area where the brightness is changed to low is canceled on the mail receiving side will be described with reference to FIGS. 2, 4, and 5. FIG. 4 is a schematic diagram showing an example of a received mail display screen. Specifically, FIG. 4A is a schematic diagram showing a display screen of a received mail, and FIG. 4B is a schematic diagram showing a release operation of an area whose brightness has been changed to a low level, and FIG. FIG. 6 is a diagram showing a display screen of mail after cancellation. FIG. 5 is a schematic diagram showing another example of the received mail display screen. Specifically, FIG. 5A is a schematic diagram showing a state in which a part of the area whose brightness is changed to be low is released, and FIG. 5B shows a state where the brightness of the released area becomes low again. FIG. 5C is a schematic diagram illustrating a state in which a predetermined time has elapsed after the release.

When the user performs an operation of designating an area having a low brightness on the screen, the mobile phone 1 changes the brightness of the designated area to a value before the brightness stored in the storage unit 8 is lowered.
In addition, the control unit 7 controls the brightness of the partial area of the screen according to the operation by the operation unit 6 in a state where the brightness of the partial area of the screen is changed to be lower than the brightness of the other areas. Is changed, the value stored in the storage unit 8 is referred to, and the brightness of a part of the area of the screen is adjusted to the state before the change.

Specifically, for example, in the state shown in FIG. 4A, the state shown in FIG. 4B can be changed by tapping the screen a predetermined number of times (hereinafter referred to as tapping). Migrate to In the figure, a state in which the area around the hatched area is a broken line indicates a state where the screen can be changed.
Next, in the cellular phone 1, in the state shown in FIG. 4 (b), when an operation of swiping a region where the brightness is changed to low is performed, as shown in FIG. 4 (c), before the brightness is changed to low. The value is changed to the brightness. That is, the brightness is changed to the same brightness as other areas.
Note that the lightness cancellation method is not limited to the above-described example, and various methods can be used. Since the area whose brightness is changed to low is a part that you do not want others to view, for example, it can be configured to be released by a specific operation, such as the number of taps or swipe speed, By setting the release method individually with, it becomes difficult for others to release the brightness, and security can be improved.

Therefore, in the mobile phone 1, in a state where the brightness of the screen is low, it is unlikely that someone other than the operator of the mobile phone 1 will look into the low brightness area. On the other hand, when the operator of the mobile phone 1 browses an area with low brightness, if the operation for specifying an area with low brightness is performed, the brightness of the specified area is changed to the brightness before the brightness is lowered. .
Further, in the mobile phone 1, the background color of the designated area is not changed, and the brightness of the area is changed as hardware, so that it does not depend on the type of application. Can be used. For this reason, in the mobile phone 1, the same display can be performed in various devices regardless of the installed application.

When the control unit 7 detects contact with a part of the area whose brightness has been changed by the operation unit 6 configured by the touch panel 2, the control unit 7 adjusts the brightness of the area to the state before the change.
Therefore, the user can change the brightness with an intuitive operation.

  In the mobile phone 1, the control unit 7 cancels the brightness of the partial area when a predetermined time (first time) has elapsed since the change of the brightness for the partial area of the screen is canceled. Return to the previous state.

Specifically, in the cellular phone 1, for example, as shown in FIG. 5A, when a region whose brightness is changed to low is released by swiping, when a predetermined time has elapsed, ) To return to a state in which the lightness of the mail reception state is changed to low.
Further, in the present embodiment, as the predetermined time elapses, the brightness is gradually changed to the predetermined brightness as shown in FIG. 5C from FIG. 5A to FIG. 5B. The If comprised in this way, the user can recognize the change of the brightness visually.

  Therefore, in the mobile phone 1, for example, when the lightness of the designated low lightness area is changed to the lightness before the lightness is lowered by the user's operation, a predetermined change is made after the lightness change is canceled. After a lapse of time, the brightness is changed to a lower value before the change. For this reason, the mobile phone 1 can be automatically returned to a state where peeping is automatically prevented even when it is crowded suddenly on a train or the like and it is difficult to perform manual operation. The user can browse the screen without worrying about peeping.

  In the mobile phone 1, the control unit 7 adjusts the length of a predetermined time (first time) according to the type of character string included in a partial area of the screen.

  Specifically, in the mobile phone 1, for example, as shown in FIG. 5A, when the brightness of the area related to the characters “Iko ni Date!” Is canceled, It is possible to shorten the time for changing the brightness of an area related to a specific character such as “date” to be low.

  Therefore, in the mobile phone 1, for example, in order to adjust the time for lowering the brightness according to the type of character string such as a specific character string or character font, for example, according to the importance of the character string. It is possible to change the display time. Note that the predetermined time can be adjusted, for example, according to the displayed screen such as a browser screen or a mail screen.

  Next, processing related to creation and transmission of mail from the mobile phone 1 and processing related to reception from browsing of mail will be described together with user operations. In the following description, the above-described region whose brightness has been changed is visually filtered (set) so that it is difficult to see. The term filter will be used for explanation.

  First, a series of operations related to mail transmission processing in the mobile phone 1 will be described with reference to FIG. 6 together with user operations. FIG. 6 is a flowchart showing a flow of a series of operations related to mail transmission processing in the mobile phone 1. Note that in this operation, the description relating to the creation of the mail up to the determination of the mail content is omitted. That is, the operation from the state in which the mail whose content to be transmitted is determined is created will be described.

  In step ST1, the control unit 7 determines whether or not the filter automatic setting is turned on by the user. If the automatic filter setting is ON (YES), the process proceeds to step ST2, and if the automatic filter setting is not OFF (NO), the process proceeds to step ST5.

  In step ST2, the control unit 7 analyzes the display screen information. Specifically, the control unit 7 analyzes information displayed on the screen and, for example, character and image types, text characters, character types such as font and size, characters stored in the storage unit 8, Analyzes images and proper nouns. Thereby, the control unit 7 can determine whether or not there is a part to be filtered other than the area designated by the user.

  In step ST3, the control unit 7 determines a filter range. The control unit 7 determines a filter region based on the display image information analyzed in step ST1. In the example of FIG. 3A, the text characters “Merry ★ Date Niiko! Christmas”, the proper noun “Taro”, the character “Yor” adjacent to “Taro”, and the symbol of the heart stored in the storage unit 8 Are determined as filter targets.

  In step ST4, the control unit 7 displays a mail screen with a filter. Specifically, the control unit 7 controls the display unit 5 to lower the brightness of the region corresponding to the filter region determined in step ST3 on the display unit 5. As a result, a screen with a filter as shown in FIG.

In step ST5, the control unit 7 determines whether or not the range is specified by swiping by the user. If the surface of touch panel 2 is swiped by the user (YES), the process proceeds to step ST6. At this time, the control unit 7 stores the changed characters and the like as learning data in the storage unit 8 in order to reflect them in the next process. The stored learning data is used in the analysis of step ST2 and reflected in the determination of the filter region that suits the user's taste.
On the other hand, when the surface of touch panel 2 has not been swiped by the user (NO), the process proceeds to step ST7.

  In step ST6, the control unit 7 detects a range in which the surface of the touch panel 2 is swiped by the user.

  Next, in step ST7, the control unit 7 determines a filter range. The controller 7 cancels or sets the filter for the area detected in step ST6.

  Next, in step ST8, the control unit 7 determines whether or not a mail transmission operation has been performed by the user. If a mail transmission operation is performed by the user (YES), the process proceeds to step ST9. If a mail transmission operation is not performed by the user (NO), the process returns to step ST1. At the time of transmission, the control unit 7 adds information indicating that the brightness of the display unit 5 is changed to a low level in association with the area corresponding to the filter to the data relating to the mail.

  In step ST9, the communication unit 9 transmits a mail. Specifically, the control unit 7 associates the data related to the mail including information indicating that the brightness of the display unit 5 is changed to a predetermined destination with respect to the communication unit 9 in association with the area corresponding to the filter. Control to send. Thereafter, an email is sent and the process ends. Note that the filter range may be specified by swiping the user first by moving the order of steps ST1 to ST3 and steps ST4 to ST5 back and forth. Further, for example, steps ST2 to ST4 may be executed by the server that temporarily received the mail.

  Next, an operation related to a display process of mail received by the mobile phone 1 will be described with reference to FIG. FIG. 7 is a flowchart showing a flow of an operation related to a display process of mail received by the mobile phone 1.

  In the mobile phone 1 that has received the mail, the control unit 7 analyzes the received mail in step ST20. In detail, the control unit 7 analyzes whether or not information indicating that the brightness of the display unit 5 in the area corresponding to the filter is changed to low is added to the data relating to the mail.

  In step ST21, the control unit 7 determines whether the mail has a filter. If it is determined that the mail has a filter (YES), the process proceeds to step ST22. If it is determined that the mail is not filtered (NO), the mail is displayed and the process proceeds to step ST31.

  In step ST22, the display unit 5 displays the mail. Specifically, in step ST20, the control unit 7 controls the display unit 5 to change the lightness of the area to be filtered low based on information such as the lightness of the partial area associated with the mail. As a result, the filtered mail is displayed on the display unit 5.

  In step ST23, the mobile phone 1 is in a display mode (a state in which the screen cannot be changed). For example, the control unit 7 controls the display unit 5 to display a screen as shown in FIG.

  In step ST24, the control unit 7 determines whether or not the display mode has been canceled. Specifically, the control unit 7 determines whether or not an operation of tapping the touch panel 2 a predetermined number of times has been performed by the user, for example, as illustrated in FIG. If it is determined that the display mode has been canceled (OK) (YES), the process proceeds to step ST25. If it is determined that the display mode has not been canceled (NO) (NO), the process returns to step ST23 so that the display mode is still maintained.

  In step ST25, the mobile phone 1 enters the filter operation mode (the screen can be changed). By shifting to this mode, the displayed screen shifts from the state shown in FIG. 4A to the state shown in FIG. On the display unit 5, as shown in FIG. 4B, the low brightness area is displayed so as to be surrounded by a broken line.

  In step ST26, the control unit 7 determines whether or not the release range has been swiped. The control unit 7 determines whether or not the surface of the touch panel 2 has been swiped by the user. If it is determined that the release range has been swiped (YES), the process proceeds to step ST27. If it is determined that the release range has not been swipe (NO), the process proceeds to step ST31.

  In step ST27, the control unit 7 recognizes the filter release range.

  In step ST28, the control part 7 cancels | releases a filter with respect to the recognition range. Specifically, the control unit 7 controls the display unit 5 so that the brightness of the region recognized in step ST27 is set to the brightness before being changed to a low level. As a result, on the display unit 5, for example, a screen with the filter removed as shown in FIG. 4C is displayed according to the recognized range. In the mobile phone 1, only a part of the filter can be canceled as shown in FIG.

  In step ST29, the control unit 7 determines whether or not a specified time has elapsed. If the predetermined time has elapsed (YES), the process proceeds to step ST29. In the present embodiment, the designated time is set to about 3 seconds.

  In step ST30, the control unit 7 performs filter revalidation on the recognition range. Specifically, for example, the control unit 7 gradually decreases the brightness of the area to be filtered as shown in FIG. 5B from the state where the filter is released as in the example shown in FIG. Then, the display unit 5 is finally controlled so as to shift to a state where a filter is applied as shown in FIG.

  In step ST31, the display unit 5 displays the mail. Specifically, the control unit 7 controls the display unit 5 to display mail that is determined not to be filtered mail in step ST21 or mail in which the filter is re-enabled in step ST30.

  Therefore, a user who has received a filtered mail can view the screen without worrying about peeping, and browse the filtered area at his / her own timing. Can do. The time for re-enabling the filter at that time may change corresponding to the character string to be filtered.

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

  Further, in the above-described embodiment, when the brightness is changed, the brightness is changed based on the value before the brightness is lowered. However, the present invention is not limited to this. For example, in the area other than the area where the brightness is low, The brightness may be changed based on the brightness value.

  In the above-described embodiment, the filter area is determined by the mobile phone 1 on the transmission side before mail transmission, but the present invention is not limited to this. The determination of the filter area is performed by, for example, transmitting the presence / absence of filtering together with the mail in the mobile phone 1 on the transmission side, and applying the filter based on the presence / absence of the filtering in the server for transferring mail or the receiving mobile phone 1 You may comprise as follows.

  Further, in the above-described embodiment, the mail data is configured to attach additional information such as the area where the brightness is lowered, the brightness value before the brightness is lowered, or the brightness value before the brightness is lowered. Not limited. For example, when the displayed screen is composed of HTML or the like, it can be configured to be included as tag information.

  In the above-described embodiment, the mail of the mobile phone 1 has been described as an example, but the present invention is not limited to this. The present invention is not limited to display of mail or browser, but can be applied to display of various applications and display in operation on the operation system.

  In the above-described embodiment, the time for which the filter is effective is set to about 3 seconds, but is not limited thereto, and various settings can be made. Also, the time for which the filter is valid can be set according to the situation in which the mail screen, browser screen, etc. are used. Specifically, it can be set to about 3 seconds for a mail screen, or about 1 second for a browser screen.

  Moreover, in the above-mentioned embodiment, although the display part 5 was comprised as an organic EL panel (organic EL display part), it is not restricted to this. The display unit 5 may be a display device that can change the brightness of a part of the screen to a low level, and may be configured by a liquid crystal display panel (liquid crystal display unit), for example.

  Further, in the above-described embodiment, the present invention is configured for the purpose of preventing peeping. However, the brightness of a part of the screen is changed to be low, and the brightness of the screen is different from other areas. If the brightness of the screen is changed from a low state to a high state, attention is drawn and a visual effect is generated. Therefore, in addition to the effect of preventing peeping, the present invention can provide a screen that exhibits a visual effect by associating an important message or the like with a region whose brightness has been changed to a low level. Further, when the brightness is changed, an operation by the user is accompanied, so that a portion where the brightness is changed more effectively can be impressed to the user, and a further visual effect can be exhibited. In order to give a surprise to the viewer, for example, to filter the portion of the screen that the user wants to convey, such as a message, to let the viewer cancel the filter, to produce a message, etc. May be used.

  In the above-described embodiment, the present invention has been described with respect to the mobile phone 1 as an example of an electronic device. However, the present invention is not limited to this. For example, the present invention can be applied to general electronic devices including the display unit 5.

1 Mobile phone (electronic equipment)
2 Touch panel (touch sensor)
5 Display unit 6 Operation unit 7 Control unit 8 Storage unit 9 Communication unit

Claims (14)

An operation unit;
A display unit;
A control unit that changes the brightness of a part of the screen displayed on the display unit,
In the state where the brightness of the partial area of the screen is changed to be lower than the brightness of the other areas, the control unit is configured to change the brightness of the partial area of the screen according to an operation by the operation unit. Electronic device that cancels changes. The operation unit is a touch sensor superimposed on the display unit,
The electronic device according to claim 1, wherein when the touch unit detects contact with a part of the area whose brightness has been changed by the touch sensor, the controller cancels the change in brightness of the area.   The control unit returns to a state before canceling the brightness of the partial area when the first time has elapsed after the change of the brightness of the partial area of the screen is canceled. The electronic device as described in.   The electronic device according to claim 3, wherein the control unit gradually returns to a state before canceling the brightness of a part of the screen as it approaches the first time after the change of the brightness is released.   The electronic device according to claim 3, wherein the control unit sets the first time according to a type of a character string included in a partial area of the screen.   The said control part changes the brightness of the said part by making the part which satisfy | fills predetermined conditions into the one part area | region of the said display part in the screen displayed on the said display part. Electronic equipment described in 1.   The electronic device according to claim 6, wherein the portion satisfying the predetermined condition is a portion including a predetermined character string.   The electronic device according to claim 6, wherein when the brightness of a part of the region including the predetermined character string is changed, the control unit changes the brightness of a part including the character string adjacent to the character string. .   The control unit adjusts the size of a part of the area for changing the lightness based on information of the character string when a character string is included in the part of the area for changing the lightness. 9. The electronic device according to any one of 8. A communication unit;
10. The control unit according to claim 1, wherein when the predetermined image is attached to the mail received by the communication unit, the control unit changes the brightness of a portion where the predetermined image is displayed on the display unit. An electronic device according to any one of the above.   The electronic device according to claim 1, wherein the brightness is a contrast ratio or luminance.   The electronic device according to claim 1, wherein the display unit is an organic EL display unit or a liquid crystal display unit. In a control method of an electronic device comprising: an operation unit; a display unit; and a control unit that changes the brightness of a part of the screen displayed on the display unit.
In a state where the brightness of a part of the screen is changed to be lower than the brightness of the other area, the change of the brightness of the part of the screen is canceled according to the operation by the operation unit. A control method comprising a process. In a program for controlling an electronic device comprising an operation unit, a display unit, and a control unit that changes the brightness of a portion of the screen displayed on the display unit,
In a state where the brightness of a part of the screen is changed to be lower than the brightness of the other area, the change of the brightness of the part of the screen is canceled according to the operation by the operation unit. A program comprising means.

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