JP2003140574A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device with excellent usability and convenience which is excellent in usability as an electronic book, etc., and usable even with a display element having slow display speed, and which is not interrupted when changing the page. SOLUTION: The display device which reads display data by a page unit and displays it on a display element is constituted of a turn-over detecting section to detect turning over of the device main body formed in a plate shape and the rotating direction for turning over, a first and a second display element arranged on the front and rear face of the device main body for displaying each one page of the read display data, a page changing means to display a new page by changing the display of the first or the second display element when the turn-over detecting section detects the turning over of the device main body, a changed display element selecting means to select the display element changed by the page changing means, and a changed page setting means to set the changed page as the next page or the preceding page.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device such as an electronic book for displaying contents of an electronic book transferred, stored in an internal storage unit, or stored in a storage medium.

[0002]

2. Description of the Related Art In recent years, a display device using a liquid crystal display element has been developed and has good portability. Therefore, it is possible to display sentences and figures with a display capacity equivalent to that of a book or the like and carry the same as a book or the like. It is used in electronic books that can be read in various places. A display device using such a display element is usually formed in a plate shape and has a single display element on the front side surface. For updating the page displayed on the display element, page selection provided on the main body of the device, etc. By operating a switch or key for touching or a touch panel or the like, the contents are updated to the contents of the next page or the previous page of the page on which the display element is displayed.

[0003]

However, the above-mentioned conventional display device has the following problems.

(1) Generally, when a conventional display device finishes reading one page, it is necessary to operate a changeover switch or the like to switch and update to the next page. However, there was a problem that it was not possible to concentrate on the user and lacked usability and convenience.

(2) When a display element having a slow display such as an STN liquid crystal display element is used, it takes a lot of time to update the display screen when the display screen is updated, and the display quality is poor and the appearance is not good. Had challenges. In addition, when a display element with a fast display is used, generally, when a display element with a high display speed is used, power consumption increases, and thus there is a problem that portability and convenience are lacking.

INDUSTRIAL APPLICABILITY The present invention is excellent in usability as an electronic book and can be used even for a display element with low power consumption and a slow display speed, and the usability and convenience are not interrupted during the update. An object is to provide a display device having excellent properties.

[0007]

In order to solve the above-mentioned problems, the display device of the present invention reads the display data stored in the device or stored in a storage medium attached to the device in page units. A display device for displaying on a display element, and an inside-out detection unit for detecting an inside-out of a plate-shaped device body and a rotation direction for turning over (hereinafter, referred to as an inside-out direction); First and second display elements which are disposed on a surface and each display one page of the read display data; and when the inside-out detecting unit detects the inside-out, the first or second display element The page updating means for updating the display of the second display element to display the updated page, the update display element selecting means for selecting the display element updated by the page updating means, and the update page for the next page. Or it has a update page setting means, a configuration with a set to the previous page.

With this configuration, even a display element having excellent usability as an electronic book or the like, low power consumption, and slow display speed can be used, and the usability and convenience are not interrupted during the updating. A display device having excellent properties can be provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A display device according to claim 1 of the present invention reads display data stored in a device or stored in a storage medium mounted in the device in page units and displays it in a display element. A display device for displaying, which is provided on the front and back sides of the device body, and an inside-out detection unit for detecting the inside-out of the plate-shaped device body and a rotation direction for turning over (hereinafter, referred to as an inside-out direction). , The display of the first or second display element is updated when the inside out of the main body of the device is detected by the first and second display elements that display one page of the read display data and the inside out detection unit. A page updating means for displaying an updated page, an updated display element selecting means for selecting a display element to be updated by the page updating means, and an updated page setting means for setting the updated page to the next page or the previous page, And it has a configuration including.

With this configuration, when the inside-out detecting section detects the inside-out of the apparatus body, the page updating means
Of the first or second display elements, one display element selected by the update display element selecting means can be updated to the page set by the update page setting means,
It has an effect that the contents of the next page or the previous page can be easily updated by turning over the device body.

The invention according to claim 2 of the present invention is the display device according to claim 1, wherein the update page setting means is
When the inside-out detection unit detects that the inside-out direction is the preset predetermined direction, the update page is set to the next page, and the inside-out detection unit detects that the inside-out direction is the reverse direction of the specified direction. Has a configuration for setting the update page to the previous page.

With this configuration, in addition to the function of claim 1,
With the update page setting means, it is possible to determine whether the page to be updated is the next page or the previous page by the flipping direction of the apparatus main body, so that the operation is almost the same as the page turning operation when reading a book. It can be updated and displayed on the next page or the previous page, and when reading forward, it can be turned over in a certain direction to display and read the next page, and when reading back the previous page, it is turned over when reading forward When the direction is reversed, the previous page can be displayed, which is advantageous in terms of convenience.

According to a third aspect of the present invention, the display device according to the second aspect has a configuration including a page feed direction designation switch for designating a predetermined direction.

With this configuration, in addition to the function of claim 2,
By operating the page feed direction specification switch, it is possible to arbitrarily specify and set the flipping direction for updating the page displayed on the display element and making it the next page,
It has an effect that it can cope with whether the display data is vertically written document data or horizontally written document data, and can deal with various usage patterns such as a habit of a user.

The invention according to claim 4 of the present invention is the display device according to any one of claims 1 to 3.
The renewal display element selecting means has a configuration of selecting, as the display element to be renewed, one of the first and second display elements that is on the back side after being turned over.

With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.

(1) Since the display element on the back side of the user after turning over can be updated in advance before the next turning over operation, the contents of the display data can be read easily. In addition, since the display element facing the back side is updated after being turned over, reading can be smoothly performed, display quality can be improved, and convenience is excellent.

(2) Since the display element on the back side is updated to the content of the next page or the previous page after turning over to the user after turning over, the display element on the back side is read while the page displayed on the display element on the front side is read. It is possible to update the page displayed on the page to the content of the next page or the previous page, and it is possible to cope with the case where a display element having a low display speed is used to rewrite the display data, which is excellent in usability.

The invention according to claim 5 of the present invention is the display device according to any one of claims 1 to 4.
The update display element selecting means selects, as the display element to be updated, one of the first and second display elements that is on the back side after being turned over, and the page updating means is
The configuration is such that an update page is displayed on the first or second display element.

With this configuration, in addition to the operation of any one of claims 1 to 4, the following operation is provided.

(1) After turning over, the display element on the back side is turned over to the user after being turned over to update the contents of the next page or the previous page after a lapse of a certain time. Therefore, while reading the page displayed on the display element on the front side. The page displayed on the display device on the back side can be updated to the contents of the next page or the previous page, and even if the display data is rewritten and a display device with a slow display speed is used, the usability can be improved. Have.

(2) Since the display element on the back side of the user is updated after a lapse of a certain time after turning over, the previous page displayed on the display element on the back side can be easily displayed before turning over and a lapse of a certain time. It has the effect that the contents of can be read back.

The invention according to claim 6 of the present invention is the display device according to claim 4 or 5, wherein the update page setting means preliminarily sets the update page to either the next page or the previous page. It has a configuration to set.

With this configuration, in addition to the effect of claim 4 or 5, the update page can be set in advance to the next page or the previous page by the update page setting means. The page displayed on the display element on the back side can be updated to the next page or the previous page and can be read easily, and especially when the update page is set to the previous page, readback can be easily performed. It has an effect of being excellent in convenience.

The invention according to claim 7 of the present invention is the display device according to any one of claims 4 to 6,
It has a configuration including a page priority setting switch for setting the update page to the next page or the previous page.

With this configuration, in addition to the operation of any one of claims 4 to 6, by operating the page priority setting switch, the update page is set to be the next page or the previous page by switching. Therefore, there is an effect that the user can arbitrarily select whether to proceed reading or reading back page by page.

The invention according to claim 8 of the present invention is the display device according to any one of claims 1 to 7.
It has a configuration including display data setting means for storing and setting display data in a storage element in the device in advance by a storage medium or a communication line.

With this configuration, in addition to the operation of any one of claims 1 to 7, by pre-storing and setting the display data, the contents to be displayed can be changed, and the display data having various materials can be supported. It has the effect of being able to.

The invention according to claim 9 of the present invention is the display device according to any one of claims 1 to 8.
The display element has a structure that is a liquid crystal display element.

According to this structure, in addition to the effect of any one of claims 1 to 8, there is an effect that the apparatus main body can be made thin and lightweight.

The invention described in claim 10 of the present invention is the display device according to any one of claims 1 to 9, wherein the display element is a display element having a memory property. ing.

With this configuration, in addition to the operation according to any one of claims 1 to 9, due to the memory property, power consumption is required only at the time of updating and does not require power for displaying at the time of displaying after updating. Therefore, there is an effect that power consumption of the display device can be reduced.

Here, as the liquid crystal display element having a memory property, an electrophoretic display element, a ferroelectric liquid crystal display element, or the like is used.

The invention according to claim 11 of the present invention is the display device according to any one of claims 1 to 8, wherein the display element is an EL element.

With this configuration, in addition to the effect of any one of claims 1 to 8, there is an effect of good visibility.

Here, the EL element is called electroluminescence or electric field luminescence, and does not need to have a backlight because it emits light by itself.

The twelfth aspect of the present invention is the display device according to any one of the first to eleventh aspects, wherein the storage medium is an optical memory element.

With this configuration, in addition to the operation according to any one of claims 1 to 11, a large storage capacity allows a large amount of information to be stored in one storage medium.
Various information can be displayed without exchanging the storage medium, which has the effect of excellent usability.

A thirteenth aspect of the present invention is the display device according to any one of the first to eleventh aspects, wherein the storage medium is an optical disc.

With this configuration, in addition to the action of any one of claims 1 to 11, the following action is provided.

(1) Since it is a removable medium, it is easy to handle, and since the productivity of the medium is excellent, the system can be made inexpensive.

(2) Since the storage medium can be configured to be removable, it has an effect that various information can be displayed on the display element.

The fourteenth aspect of the present invention is the display device according to any one of the first to eleventh aspects, wherein the storage medium is a semiconductor storage element.

With this configuration, in addition to the operation of any one of claims 1 to 11, the display device can be driven with low power consumption, and is small and lightweight, so that it is excellent in portability and has no mechanical moving part. Therefore, it has an effect of being strong against shock such as vibration and excellent in operability and shock resistance.

RA is used as the semiconductor memory element.
M, ROM, etc. are used.

An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a perspective view of a display device according to the first embodiment, and FIG. 2 is a view of the first embodiment.
3 is a side view of the display device in FIG.

In the figure, 101 is a display device according to the first embodiment, 101a is a device body of a display device 101 formed in a plate shape, and 102 is a liquid crystal display element and is provided on one surface of the device body 101a. First display element, 1
Reference numeral 03 denotes a second display element which is formed of a liquid crystal display element and is disposed on the surface of the apparatus main body 101a opposite to the first display element, and 104 denotes the first display apparatus 102 of the apparatus main body 101a.
An operation unit that is arranged on the same surface as the switch and consists of switches and buttons,
104a is a power switch for turning on / off the power of the display device 101, 105 is a data load switch for transferring the data to be displayed to a RAM described later, and 106 is a page feed direction for designating an upside-down direction for making the updated page the next page. Designation switch 107 is a page priority setting switch for fixedly setting the updated page to the next page or the previous page, 10
Reference numeral 8 denotes a display page setting switch for setting a page to start reading, 109 denotes a storage medium mounting portion arranged on the side of the apparatus main body 101a, and 109a denotes a first or second storage medium mounting portion 109 that can be mounted. A storage medium using a semiconductor in which data displayed on the display elements 103 and 104 is stored, 11
2 is a data transfer terminal.

When the page feed direction designation switch 106 is pressed once, the flipping direction for setting the updated page as the next page is set clockwise, for example, and the flipping direction for setting the updated page as the previous page is left accordingly. Set around. When the page feed direction designation switch 106 is pressed again, the flipping direction for setting the updated page as the next page is set counterclockwise, and the flipping direction for setting the update page as the previous page is set clockwise as a result. .

When the page priority setting switch 107 is pressed once, the update page is fixedly set to the next page, and when it is pressed again, the update page is fixedly set to the previous page. The page feed direction designation switch 106 and the page priority setting switch 107 may be configured to switch the flip direction and the updated page by a switching operation using a changeover switch or the like.

The display page setting switch 108 is formed on a numeric keypad or the like, and displays the page to start reading by inputting the page to start reading. Note that the page to be read can be input and displayed by the display page setting switch 108 when the other page is displayed, not limited to the start of reading.

FIG. 3A is a block diagram showing the display device according to the first embodiment, and FIG. 3B is a block diagram showing the function realizing means in the control unit. Note that FIG.
The function realizing means shown in (b) is a means for realizing a predetermined function and is realized by executing a program.

In the figure, 102 is a first display element, 103 is a second display element, 104 is an operating section, 109 is a storage medium mounting section, and 109a is a storage medium. These are shown in FIG.
Since it is the same as that described in 1), the same reference numerals are given and the description is omitted. 113 is a control unit for controlling the whole,
Reference numeral 114 denotes an inside-out detection unit configured by a mercury switch, a rotary encoder using gravity, or the like for detecting the inside-out of the apparatus body 101a and the direction of the inside-out, and 115 denotes a ROM,
Reference numeral 116 is a RAM, 117 is a page updating means for displaying an updated page on the first or second display element 102, 103 when the inside-out detecting portion 114 detects the inside-out of the apparatus main body 101a, and 118 is a page updating means 117. Update display element selection means for selecting a display element to be updated, 1
Reference numeral 19 is an update page setting means for selecting and setting either the next page or the previous page as the update page, and 120 is a display data setting means for setting the data to be displayed.

The display data setting means 120 is the storage medium 1.
09a to the internal RAM via the storage medium mounting unit 109
The display data is transferred to and stored in 116.

In the first embodiment, the data to be displayed is transferred from the storage medium 109a to the RAM 116 inside the apparatus main body 101a.
Data may be transferred to the RAM 116 by using the wireless communication method 12 or wireless. In addition, in the first embodiment, the storage medium 1
Although a semiconductor memory device is used as 09a, the invention is not limited to this, and an optical memory, an optical disk, or the like may be used. By using an optical memory as the storage medium 109a, a large amount of data can be stored and can be displayed even if the amount of information such as a dictionary is huge. Further, by using an optical disk as the storage medium 109a, it is possible to increase the capacity, the portability, and the productivity.

In the portable and portable display device as shown in the first embodiment, a liquid crystal display element is used as a display element in combination with the thin plate shape, display power, and semiconductor element. In the first embodiment, a display device using a liquid crystal display element as a display element is described because it is optimal, but the present invention is not limited to this, and a liquid crystal having a memory property such as a ferroelectric liquid crystal display element. A display element or EL element may be used. Display element 10
By using a liquid crystal display element having a memory property as the elements 2 and 103, power consumption is required only when a page is updated and display power is not required while the page is displayed, so that power consumption can be reduced. In addition, the display elements 102 and 103
When an EL element is used as the display device, the display device can be thinned, and since it is a self-luminous display, a backlight is not necessary and visibility can be improved.

The operation of the display device of the first embodiment having the above configuration will be described with reference to the drawings.

FIG. 4 is an explanatory view showing the turning over operation of the display device according to the first embodiment.

First, the main body 101a of the display device 101
Then, the storage medium 109a in which display data such as a document such as a story is stored is inserted into the storage medium mounting portion 109 and mounted, and the power switch 104a is turned on. After that, when the data load switch 105 is turned on, the storage medium 109a
The display data therein is transferred to the RAM 116 in the display device 101, and the display data setting means 120 sets the display data. Here, by inputting a desired page number or the like using the display page setting switch 108, the RAM
From the display data transferred to 116 and set, the contents of the page of the input page number is read out, sent to the first display element 102, and displayed as the first page to start reading. The updated display element selection unit 118 selects the second display element 103 as the display element to be updated next when the first page of the reading start is displayed on the first display device 102. Further, the first display element 102 is selected as the display element to be updated next, and thereafter the first display element 102 and the second display element 103 are alternately selected.

After the user finishes reading the information on the first page, as shown in FIG. 4, the apparatus main body 101a is turned over in the direction A or B so as to turn the pages of the book and turned over. When the rotation in the A direction is set as the predetermined direction by the page feed direction designation switch 106, when the apparatus main body 101a is rotated in the A direction with the A direction as the turning direction and turned over,
The inside-out detecting unit 114 detects the rotation in the A direction. As a result, the update page setting unit 119 sets the update page to the next page, and the page updating unit 117 calls the display data of the next page from the RAM 116, and the next page is displayed on the second display element 103 which has been turned upside down. indicate. When displaying the previous page, the apparatus main body 101a is turned upside down in the direction opposite to the case of the next page with the direction B as the turning over direction, and the updated page setting means 1 is turned over.
Reference numeral 19 sets the update page to the previous page, and the page update unit 117 can display the previous page on the second display element 103. In addition, the inside-out direction means the device body 1
This is the direction to rotate 01a to turn it over. Further, the predetermined direction designated by the page feed direction designation switch 106 can be designated by arbitrarily switching to the A direction or the B direction depending on the convenience of the user such as the habit.

The first display element 1 directed to the front side
If the user is reading the page displayed in 02,
Since the second display element 103 on the back side is in a position invisible to the user and there is no need to maintain the displayed page, when the next page is fixedly set as the update page by the update page setting means, First display element 1
It is possible to update the page next to the page displayed in 02.

As a result, when the page displayed on the first display element 102 has been read, the apparatus main body 101a has been turned over, and the second display element 103 has been turned to the front side, the display on the second display element 103 has been completed. The displayed page is already updated to the next page and is in a stable state, and good display quality can be obtained. Further, the second display element 103 can be updated to the next page within the time until the page displayed on the first display element 102 on the front side is completely read. It is not necessary to perform the operation, a display element having a slow display speed can be used, and the update operation can be performed under the condition of low power consumption. Also, at this time, the second side on the back side
The page to be displayed on the display element 103 is set to the next page or the previous page by the page priority setting switch 107, so that the page to be displayed on the second display element 103 on the back side can be selected and fixedly set. When reading normally, the update page is set to the next page, so that the page displayed on the first display element 102 on the front side is read, that is, the second display element 103 faces the back surface. In the meantime, the second display element 103 is updated to the next page, so that reading can be smoothly performed. On the other hand, if you want to read the page back,
By setting the page displayed on the display element 103 of No. 2 as the previous page, the page is updated to the previous page while the second display element 103 is facing the back surface, so that the page can be smoothly read back. . At this time, it is preferable that the second display element 103 on the back surface side is not updated for a certain period of time after turning over, but is updated to the next page to be displayed after a certain period of time has elapsed. As a result, when the original content is read back after turning over the apparatus body 101a, the display element on the back side is not immediately updated, and thus the display data can be read back without having to be updated. In addition, since reading back is often performed immediately after turning over the apparatus main body 101a and starting reading a new page, by updating the display element on the back side with new data of the next page after a certain period of time, ST
It is possible to sufficiently cope with a display element having a slow display speed, such as an N type liquid crystal, and it is possible to prevent the reader from seeing an unclear display during a page update.

Since the display device according to the first embodiment is configured as described above, the page to be displayed is moved back and forth by turning over the device main body 101a having the two first and second display elements 102 and 103. This has the effect of improving the convenience of viewing a conventional book. Further, by using a semiconductor storage medium as the storage medium 109a, a display device that is resistant to mechanical shock, small in size, and highly portable is obtained.

[0064]

As described above, according to the display device of the present invention, the following advantageous effects can be obtained.

According to the first aspect of the present invention, when the inside-out detecting section detects the inside-out of the apparatus body, the page updating means causes the updating display element selecting means to select one of the first and second display elements. Since one of the selected display elements can be updated to the page set by the update page setting means, a display device can be easily updated to the contents of the next page or the previous page by turning over the device body. Can be provided.

According to the invention described in claim 2, claim 1
In addition to the effect of the above, the update page setting means can determine whether the page to be updated is the next page or the previous page according to the turning direction of the apparatus main body. You can update and display the next page or the previous page with almost the same operation, and when reading, you can display the next page by turning it over in a certain direction and continue reading, and when you read back the previous page, Since the previous page can be displayed by reversing the reading direction and the flipping direction in the opposite direction, a display device with excellent convenience can be provided.

According to the invention of claim 3, claim 2
In addition to the effect of the above, by operating the page feed direction specification switch, you can arbitrarily specify and set the reverse direction to update the page displayed on the display element and set it as the next page. It is possible to provide a display device capable of handling both vertically written document data and horizontally written document data, and capable of handling various usage patterns such as the habit of the user.

According to the invention of claim 4, claim 1
In addition to the effect of any one of items 1 to 3, (1) since the display element that is the back side for the user after turning over can be updated in advance before the next turning over operation, The content can be read easily, and after turning over, the display element facing the back side is updated, so reading can be performed smoothly and display quality can be improved, and a highly convenient display. A device can be provided.

(2) Since the display element on the back side is updated to the contents of the next page or the previous page after the flipping operation to the user after turning over, the display element on the back side is read while the page displayed on the display element on the front side is read. To provide a display device capable of updating the page displayed on the screen to the content of the next page or the previous page, rewriting the display data and using a display element having a slow display speed and having excellent usability. You can

According to the invention of claim 5, claim 1
In addition to the effect of any one of the items 1 to 4, (1) display on the front side for updating the contents of the next page or the previous page to the user after turning over after a certain time has passed after turning over While the page displayed on the device is being read, the page displayed on the back side display device can be updated to the contents of the next page or the previous page. However, it is possible to provide a display device which can cope with such a situation and is excellent in usability.

(2) Since the display element on the back side of the user is updated after a lapse of a certain time after turning over, the previous page displayed on the display element on the back side can be easily displayed before turning over and a lapse of a certain time. It is possible to provide a display device that is excellent in usability and can read back the contents of the above.

According to the invention of claim 6, claim 4
Alternatively, in addition to the effect of 5, the update page can be preset to the next page or the previous page by the update page setting means.
Regardless of the flipping direction, the page displayed on the display element on the back side can be updated to the next page or the previous page one after another every time the page is turned over, and the page can be easily read. When set to, it is possible to provide a display device that is easy to read back and is excellent in convenience.

According to the invention described in claim 7, claim 4
In addition to the effect of any one of the items 1 to 6, by operating the page priority setting switch, it is possible to set the update page to be the next page or the previous page by switching, so that the user can follow the page. It is possible to provide a display device capable of arbitrarily selecting whether to proceed with reading or reading back.

According to the invention of claim 8, claim 1
In addition to the effect of any one of items 7 to 7, by pre-storing and setting the display data, it is possible to change the content to be displayed and to provide a display device that can handle display data having various materials.

According to the invention of claim 9, claim 1
In addition to the effect of any one of items 8 to 8, it is possible to provide a display device in which the device main body can be thinned and the weight thereof can be reduced.

According to the invention described in claim 10, in addition to the effect of any one of claims 1 to 9, power consumption is required only at the time of updating due to the memory property, and is displayed at the time of displaying after updating. Therefore, a display device that can reduce power consumption of the display device can be provided because power consumption for the display device is not required.

According to the invention described in claim 11, in addition to the effect of any one of claims 1 to 8, it is possible to provide a display device having good visibility.

According to the twelfth aspect of the present invention, in addition to the effect of any one of the first to eleventh aspects, a large storage capacity allows a large amount of information to be stored in one storage medium. It is possible to provide a display device which can display various information without exchanging a storage medium and is excellent in usability.

According to the invention of claim 13, in addition to the effect of any one of claims 1 to 11, (1) the removable medium facilitates handling and improves the productivity of the medium. It is possible to provide a display device which can be inexpensive because it is excellent.

(2) Since the storage medium can be configured to be removable, it is possible to provide a display device capable of displaying various information on the display element.

According to the fourteenth aspect of the present invention, in addition to the effect of any one of the first to eleventh aspects, the display device can be driven with low power consumption, and is small and lightweight, which is excellent in portability. Further, since there is no mechanically movable part, it is possible to provide a display device which is resistant to shock such as vibration and excellent in operability and shock resistance.

[Brief description of drawings]

FIG. 1 is a perspective view of a display device according to a first embodiment.

FIG. 2 is a side view of the display device according to the first embodiment.

3A is a block diagram of the display device according to the first embodiment, and FIG. 3B is a block diagram showing a function realizing unit by a control unit.

FIG. 4 is an explanatory diagram showing an inside-out operation of the display device according to the first embodiment.

[Explanation of symbols]

101 display device 101a Device body 102 first display element 103 Second display element 104 Operation part 104a power switch 105 data load switch 106 page feed direction switch Page 107 priority setting switch 108 Display page setting switch 109 storage medium mounting unit 109a storage medium 112 data transfer terminal 113 control unit 114 Inside-out detection unit 115 ROM 116 RAM 117 Page update method 118 Update display element selection means 119 Update page setting means 120 display data setting means

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Claims (14)

[Claims] 1. A display device for displaying display data stored in a device or stored in a storage medium mounted on the device on a page-by-page basis and displaying the read data on a display element. An inside-out detector for detecting inside-out of the main body and a rotation direction for turning over (hereinafter, referred to as an inside-out direction), and one page of the read-out display data which is arranged on the front and back sides of the main body of the apparatus. A first and second display element to be displayed, and a page updating means for updating the display of the first or second display element and displaying an updated page when the inside-out detecting section detects the inside-out of the device body. And an update display element selecting means for selecting a display element to be updated by the page updating means, and an update page setting means for setting the update page to the next page or the previous page. Display device according to claim. 2. The update page setting means sets the update page to the next page and detects the inside-out detection when the inside-out detection unit detects that the inside-out direction is a preset predetermined direction. The display device according to claim 1, wherein the update page is set to the previous page when the unit detects that the flipping direction is opposite to the predetermined direction. 3. The display device according to claim 2, further comprising a page feed direction designation switch for designating the predetermined direction. 4. The update display element selecting means selects, as a display element to be updated, a display element on the back side after the inside out, among the first and second display elements. The display device according to any one of 1 to 3. 5. The update display element selecting means selects, as a display element to be updated, one of the first and second display elements which is on the back side after the inside out, and the page updating means, The update page is displayed on the first or second display element after a predetermined time has elapsed.
5. The display device according to any one of 4 to 4. 6. The display device according to claim 4, wherein the update page setting means sets the update page to either the next page or the previous page in advance. 7. The display device according to claim 4, further comprising a page priority setting switch for setting the updated page to the next page or the previous page. 8. The display data setting means for storing and setting the display data in advance in a storage element in the device by the storage medium or a communication line, according to any one of claims 1 to 7. Display device described. 9. The display device according to claim 1, wherein the display element is a liquid crystal display element. 10. The display device according to claim 1, wherein the display element is a display element having a memory property. 11. The display device according to claim 1, wherein the display element is an EL element. 12. The display device according to claim 1, wherein the storage medium is an optical memory device. 13. The display device according to claim 1, wherein the storage medium is an optical disk. 14. The display device according to claim 1, wherein the storage medium is a semiconductor storage element.