JP4882245B2 - Mobile terminal device and method for changing viewing angle of liquid crystal screen - Google Patents

Description

  The present invention relates to a portable terminal device such as a mobile phone device or a portable information terminal device and a method for changing the viewing angle of the liquid crystal screen. The present invention relates to a method for changing the viewing angle of a liquid crystal screen.

  Today, it is now possible to exchange e-mails etc. regardless of location using a mobile phone device. However, since it can be used regardless of the location, there is a problem that people around the user can see e-mails and photos on the mobile phone device while they are out. In order to solve this problem, a filter that narrows the viewing angle of the liquid crystal screen has been put on the market. However, although this filter can solve the problems seen by surrounding people to some extent, There was a problem that always narrowed.

  As an attempt to solve the above problem, in Patent Document 1, a viewing angle changing liquid crystal plate is provided on a liquid crystal screen which is a main display unit of a mobile phone device, and operation buttons (side buttons) for changing the viewing angle are provided. The orientation direction of the viewing angle changing liquid crystal plate is controlled to a narrow viewing angle mode in accordance with an operation input from this button or in accordance with the type of application.

Further, in Patent Document 2, in a mobile phone device with a camera, when a liquid crystal display unit with a switchable viewing angle is used and the camera mode is activated, the liquid crystal display unit is set to a wider viewing angle than in the camera mode. Then, the camera shifts to a preview mode for displaying still images and moving images by the camera, and returns to a normal narrow viewing angle when the preview mode is terminated.
Japanese Patent Application No. 2004-062094 Japanese Patent Application No. 2004-233527 JP-A-10-240186

  However, when the conventional button operation is performed, there is a problem in that it requires a judgment thought to narrow or widen the viewing angle every time the display content is changed, and the operation is complicated. On the other hand, in the case of controlling the width of the viewing angle for application such as camera mode, it is necessary to incorporate a process for controlling the width of the viewing angle for each application. There was a problem of lack of flexibility.

  The present invention has been made in view of the above circumstances, and when a highly private data such as an incoming mail from a member registered in the telephone directory is displayed on the liquid crystal screen, the viewing angle of the liquid crystal screen When data with low privateness, such as a standby screen, is displayed on the LCD screen, the viewing angle of the LCD screen can be automatically increased without user intervention and flexibility. It is an object of the present invention to provide a portable terminal device that can be designed and a method for changing the viewing angle of the liquid crystal screen.

In order to solve the above problem, a first aspect of the present invention, the ID indicating the wide and narrow viewing angle of the LCD screen that is assigned to the data and displays the data on the LCD screen automatically the viewing angle of the LCD screen and changeable display unit relates to a portable terminal device and a control unit that performs overall control of the entire, the control unit may automatically identify display data type of the data to be displayed on the LCD screen A viewing angle table showing the correspondence between the identification means and an ID indicating the width of the viewing angle of the liquid crystal screen for each type of data, and an ID corresponding to the identified data with reference to the viewing angle table is given. together comprising a view angle specifying means, the said viewing angle table, when the type of the data to be displayed on the LCD screen is a photographic still image or a captured moving image, further, the the author of the data I If the creator of the data is a user, an ID for narrowing the viewing angle of the liquid crystal screen is set for the photographed still image or the photographed movie, and the creator of the data is the user. If the person is a person other than the above, an ID for widening the viewing angle of the liquid crystal screen is set for the photographed still image or the photographed moving image .

According to a second aspect of the invention, the automatically changeable display the viewing angle of the LCD screen by the ID indicating the wide and narrow viewing angle of the LCD screen that is assigned to the data and displays the data on the LCD screen, The present invention relates to a portable terminal device having a control unit that performs overall control, and the control unit includes a display data identification unit that automatically identifies a type of data displayed on the liquid crystal screen, and a data type It includes a viewing angle table showing the correspondence between ID indicating the wide and narrow viewing angle of the LCD screen, a viewing angle specifying means with reference to the viewing angle table imparting ID corresponding to the identified data together comprising, in the viewing angle table, when the type of the data to be displayed on the LCD screen is a received mail screen, further, for the received mail screen from the member registered in the phonebook ID to the effect of narrowing the viewing angle of the crystal screen is set, that has been set ID to the effect that to widen the viewing angle of the liquid crystal screen for incoming e-mail screen from members that are not registered in the phone book It is a feature.

According to a third aspect of the invention relates to a portable terminal device according to claim 1 or 2, wherein the control unit, to have a viewing angle table setting means for resetting the ID of the viewing angle table in accordance with a command from the operating unit It is characterized by.

Fourth aspect of the present invention, the automatically changeable display the viewing angle of the LCD screen by the ID indicating the wide and narrow viewing angle of the LCD screen that is assigned to the data and displays the data on the LCD screen, Display data identification for automatically identifying the type of data displayed on the liquid crystal screen, according to a method for changing the viewing angle of the liquid crystal screen of a portable terminal device having a control unit that controls the entire system A viewing angle specifying procedure for assigning an ID corresponding to the identified data with reference to a viewing angle table showing correspondence between the procedure and an ID indicating the width of the viewing angle of the liquid crystal screen for each type of data. In the viewing angle table, when the type of the data displayed on the liquid crystal screen is a photographed still image or a photographed moving image, the correspondence between the author of the data and the ID is further indicated. Every When the author of the data is a user, an ID for narrowing the viewing angle of the liquid crystal screen is set for the photographed still image or the photographed movie. When the author of the data is someone other than the user, An ID for widening the viewing angle of the liquid crystal screen is set for a still image or a captured moving image .

A fifth aspect of the present invention relates to the method for changing the viewing angle of the liquid crystal screen of the portable terminal device according to the fourth aspect , wherein the control unit resets the ID of the viewing angle table in response to a command from the operation unit. It has a setting procedure.

As described above, according to the configuration of the present invention, when display data such as a received mail , a mail creation screen, a still image, and a moving image is displayed on the liquid crystal screen, the displayed data is automatically identified. Since the viewing angle of the LCD screen is narrowed or widened automatically by referring to the table and corresponding to the data, there is no need for the user to press the viewing angle changing button as in the past, In addition, it is possible to change the viewing angle of the liquid crystal screen very easily only by designing or changing the table without performing the process of changing the viewing angle in correspondence with the application.

According to the present invention, it is possible to automatically narrow and widen the viewing angle of the liquid crystal screen depending on the content displayed on the liquid crystal screen without any operation by the user and to design flexibly. The purpose of providing a portable terminal device and a method of changing the viewing angle of the liquid crystal screen is to identify the data displayed on the liquid crystal screen and to narrow or widen the viewing angle by referring to the table for the identified data This is realized by assigning an ID and changing or continuing the viewing angle of the data according to the ID.
Embodiments of the present invention will be described below with reference to the drawings. The description will be made specifically using examples.

  First, a first embodiment of the present invention will be described. FIG. 1 is a diagram showing an example of the electrical configuration of a cellular phone device according to this embodiment. The cellular phone device of this embodiment displays an operation unit 1 that receives operations on the cellular phone device, and various data, e-mail, drawing data such as various contents such as a still image and a moving image, and the like on the liquid crystal screen. A display unit 2 that changes the viewing angle of the liquid crystal display according to the ID assigned to the mobile phone, a notification unit 3 that notifies an incoming call or a state change of the mobile phone device, an input / output unit 4 that inputs and outputs audio, and a network It comprises a transmission / reception unit 5 for performing communication and a control unit 6 for controlling the operation of each unit. In relation to this embodiment, the control unit 6 shows the correspondence between the display data identifying means 61 for identifying the data displayed on the display unit 2 and various display data and IDs indicating whether or not to change the viewing angle. The table 62 is referred to with respect to the identified data, and the viewing angle specifying means 63 for giving an ID for narrowing or widening the viewing angle to the data. Here, ID means information for identifying whether the viewing angle is wide or narrow, and includes, for example, identification information called a flag or the like. The data to which the ID is assigned is sent from the control unit 6 to the display unit 2.

  A method of changing the viewing angle of the liquid crystal screen according to the usage scene in the cellular phone device in this embodiment will be described with reference to FIGS. 2, 3, and 4. FIG. 2A and 2B are flowcharts from user operation to drawing in this embodiment and the conventional example, and FIG. 3 is a diagram showing the contents of the table 62, which is displayed on the liquid crystal screen of the display unit 2. FIG. 4 is a flowchart showing a procedure for changing the viewing angle of the liquid crystal screen. FIG. 4 shows the correspondence between the displayed data and the ID given to the display data.

  As described above, in the conventional mobile phone device, as shown in FIG. 2B, when an application is activated by a user operation (S101), the viewing angle change process is performed for each application. In step S102, the user's operation result is displayed on the liquid crystal screen at the viewing angle according to the drawing command generated in the application (S103). In this embodiment, as shown in FIG. 2A, when a drawing command by an arbitrary application is generated by a user operation via the operation unit 1 (S1), the control unit 6 determines what data Whether the image is drawn is identified, the viewing angle of the liquid crystal screen is automatically changed to a viewing angle suitable for the data (S2), and the operation result of the user is displayed on the liquid crystal screen at the viewing angle (S3).

  Details of the control (S2, S3) for identifying the data to be displayed in FIG. 2A and changing the viewing angle of the liquid crystal screen accordingly will be described with reference to FIG. When the display data identification unit 61 of the control unit 6 detects that arbitrary data is displayed on the liquid crystal screen of the display unit 2 (S11), the detected data corresponds to the data of the table 62 shown in FIG. Automatically identify the type of data. When the identified data corresponds to the data in the table 62, the viewing angle specifying means 63 considers whether or not the data is created by the user, and assigns an ID to each data according to the table 62 in FIG. (S12). Here, an ID of 1 is assigned to narrow the viewing angle, and an ID of 0 is assigned to widen the viewing angle. This table 62 is usually created on the provider side of a mobile phone device such as a manufacturer.

  In the table 62, when the data displayed on the liquid crystal screen of the display unit 2 has low privateness, that is, a still image downloaded from the network, a video downloaded from the network, or a standby screen. The display data is associated with an ID of 0 for widening the viewing angle when displayed on the liquid crystal screen of the display unit 2. Similarly, when a still image captured by the user or a moving image captured by the user is set on the standby screen, an ID of 0 indicating that the viewing angle is widened is associated with the display data.

  Further, in the table 62, when the data displayed on the liquid crystal screen of the display unit 2 is highly private, that is, the received mail, the mail creation screen, the schedule data, the To-Do data, the still image captured by the user. In the case of a picture or a moving picture taken by the user, 1 ID for narrowing the viewing angle when displayed on the liquid crystal screen is made to correspond to the display data.

  The display unit 2 receives the ID given by the viewing angle designation means 63 of the control unit 6 together with the data to be drawn on the liquid crystal screen. When the given ID is 0 (S13), the display unit 2 displays the ID given on the liquid crystal screen of the display unit 2. Control or processing for widening the viewing angle of the liquid crystal screen is performed with emphasis on the visibility of displayed data (S14). On the other hand, when the assigned ID is 1 (S15), emphasis is placed on the privacy of the data displayed on the liquid crystal screen, and control or processing for narrowing the viewing angle of the liquid crystal screen is performed (S16). In addition, when the assigned ID is neither 0 nor 1 (not assigned), unexpected data is displayed on the liquid crystal screen of the display unit 2, so that the control or processing for changing the viewing angle of the liquid crystal screen is performed. Is not performed (S17). When the viewing angle specified by the ID is the same as the previous display, the control state or processing state of the previous viewing angle is continued.

  Various conventional techniques can be used as control or processing for changing the viewing angle in the display unit 2. For example, as described in Patent Document 1, a liquid crystal plate for polarizing transmitted light is arranged on a liquid crystal screen, and the liquid crystal plate is oriented to narrow the viewing angle and to be non-oriented. Therefore, a configuration for widening the viewing angle can be used. Further, as described in Patent Document 2, a configuration in which the viewing angle is controlled by changing the display contrast of the liquid crystal screen can be used.

  According to the embodiment of the above-described configuration, when highly private information such as a received mail, a mail creation screen, a still image, a moving image, schedule data, and To-Do data is displayed on the liquid crystal screen of the display unit 2 The control unit automatically identifies the data to be displayed and changes the viewing angle of the LCD screen according to the specification of the table, so that the user can filter the LCD screen or adjust the viewing angle manually as before. The viewing angle of the liquid crystal screen can be changed very easily. Further, since the viewing angle can be controlled only by setting or changing the table on the provider side of the cellular phone device without changing each application, flexibility in designing the application is increased.

  Next, a second embodiment of the present invention will be described. FIG. 5 is a block diagram showing an electrical configuration of the cellular phone device according to this embodiment. The first embodiment has a viewing angle table 62 for identifying data displayed on the display unit and giving an ID as to whether or not to change the viewing angle. It was assumed that the device provider would do it. This embodiment is different from the first embodiment in that a viewing angle table setting unit 64 for the viewing angle table 62 is provided. The rest of the configuration is almost the same as that of the first embodiment and can be easily analogized, so that the description thereof will be omitted and only the different parts will be described.

  When the user selects a setting function for the table 62 in the setting tool or the like via the operation unit 1, the table setting unit 64 displays a part or all of the table 62 on the display unit 2, and in response to a command from the operation unit 1. The value of the ID to be assigned set as the initial value is reset. That is, the user can arbitrarily set the ID value to be given in the table 62 by giving an instruction from the operation unit 1. The operation after the setting is as in the first embodiment.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change or the like without departing from the gist of the present invention. include. For example, in the above-described embodiment, the cellular phone device has been described as an example. However, as the portable terminal device of the present invention, the same applies to a notebook PC (personal computer), an electronic notebook, a PDA (personal digital assistant device), and the like. Can be applied to. This automatically identifies that schedule data, business documents, e-mail data, private data, etc. of these mobile terminal devices are displayed on the LCD screen, and automatically narrows the viewing angle of the LCD screen. When viewing scenes that place importance on visibility, such as browsing websites, are automatically identified as being displayed on the LCD screen, the viewing angle of the LCD screen is automatically adjusted. Can be made wider. Moreover, although the structure of the control part of each said Example was demonstrated as hardware, it comprised with the computer provided with memory, its various functions, display data identification means, viewing angle designation means, viewing angle table setting means It is also possible to configure as a computer program.

  The present invention is not limited to a mobile phone device but can be applied to a mobile terminal device such as a notebook PC, an electronic notebook, or a PDA.

It is a figure which shows the electrical structural example of the mobile telephone apparatus which is 1st Example of this invention. (A) is a flowchart from the user's operation to drawing in the same Example, (b) is a flowchart from the user's operation to drawing in a prior art example. It is the figure which showed the content of the viewing angle table of the mobile telephone apparatus, Comprising: It is a figure which shows a response | compatibility with the data provided on this liquid crystal screen, and ID provided to this display data. It is a flowchart which shows the procedure which changes the viewing angle of the liquid crystal screen in the mobile telephone apparatus. It is a figure which shows the electrical structural example of the mobile telephone apparatus which is 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation part 2 Display part 6 Control part 61 Display data identification means 62 View angle table 63 View angle designation means 64 View angle table setting means

Claims (5)

A display unit that displays data on the liquid crystal screen and can automatically change the viewing angle of the liquid crystal screen based on an ID indicating the width of the viewing angle of the liquid crystal screen given to the data, and control for overall control A display data identification means for automatically identifying a type of data displayed on the liquid crystal screen, and a viewing angle of the liquid crystal screen for each data type. and the viewing angle table showing the correspondence between ID indicating a wide or narrow, with referring to the viewing angle table comprising a view angle specifying means for imparting ID corresponding to the identified data,
In the viewing angle table, when the type of the data displayed on the liquid crystal screen is a captured still image or a captured moving image, the correspondence between the author of the data and the ID is further indicated. When the creator of the data is a user, an ID for narrowing the viewing angle of the liquid crystal screen is set for the photographed still image or the photographed video. When the author of the data is a person other than the user, the photographed still image Alternatively, an ID for widening a viewing angle of a liquid crystal screen is set for a captured moving image . A display unit that displays data on the liquid crystal screen and can automatically change the viewing angle of the liquid crystal screen based on an ID indicating the width of the viewing angle of the liquid crystal screen given to the data, and control for overall control A display data identification means for automatically identifying a type of data displayed on the liquid crystal screen, and a viewing angle of the liquid crystal screen for each data type. and the viewing angle table showing the correspondence between ID indicating a wide or narrow, with referring to the viewing angle table comprising a view angle specifying means for imparting ID corresponding to the identified data,
In the viewing angle table, when the type of the data displayed on the liquid crystal screen is a received mail screen, the view angle of the liquid crystal screen is further displayed for a received mail screen from a member registered in the phone book. An ID for narrowing the corner is set, and an ID for widening the viewing angle of the liquid crystal screen is set for an incoming mail screen from a member who is not registered in the phone book. Terminal device. Wherein the control unit is a portable terminal device according to claim 1 or 2, wherein it has a viewing angle table setting means for resetting the ID of the viewing angle table in accordance with a command from the operation unit. A display unit that displays data on the liquid crystal screen and can automatically change the viewing angle of the liquid crystal screen based on an ID indicating the width of the viewing angle of the liquid crystal screen given to the data, and control for overall control And a display data identification procedure for automatically identifying the type of data displayed on the liquid crystal screen, and for each type of data A viewing angle specifying procedure for assigning an ID corresponding to the identified data with reference to a viewing angle table showing a correspondence with an ID indicating the width of the viewing angle of the liquid crystal screen,
In the viewing angle table, when the type of the data displayed on the liquid crystal screen is a photographed still image or a photographed moving image, the correspondence between the author of the data and the ID is further indicated. When the author is a user, an ID for narrowing the viewing angle of the liquid crystal screen is set for the photographed still image or the photographed video. When the author of the data is someone other than the user, the photographed still image or A method for changing the viewing angle of a liquid crystal screen of a mobile terminal device, wherein an ID for widening the viewing angle of the liquid crystal screen is set for a captured moving image . Wherein the control unit is, the viewing angle changing LCD screen of the mobile terminal apparatus according to claim 4, characterized in that it has a viewing angle table setup procedure to reset the ID of the viewing angle table in accordance with a command from the operation unit.

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