JP2004112175A - Portable device provided with 2d (two dimensional) and 3d (three dimensional) display function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a screen of 3D (three dimensional) image converted into a 2D (two dimensional) image being easy to see when an alarm is broadcasted, or a telephone call or an incoming e-mail arrives, in an electronic device provided with 2D (two dimensional) and 3D (three dimensional) display functions. <P>SOLUTION: The device is provided with a display means on which 2D and 3D images are selectively switched and displayed, and a means for detecting a change in condition of the electronic device. The device is provided with a switching control means for switching from a screen display of the condition change in 3D image of the display means to a screen display of 2D image easy to see, when detecting the change in condition. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device having a 2D (two-dimensional) and 3D (three-dimensional) display function.
[0002]
[Prior art]
2. Description of the Related Art In recent years, mobile devices such as mobile terminals, mobile personal computers, and mobile phones, information devices such as desktop personal computers, and various electronic devices including audio / video devices have become increasingly sophisticated.
[0003]
As a conventional mobile phone, a 3D display-equipped mobile phone having a 3D display function has been proposed which can switch between 2D (two-dimensional) / 3D display and display. The lenticular lens disposed above the liquid crystal display is movable and the display areas of the 2D display unit and the 3D display unit can be changed. (For example, refer to Patent Document 1.)
Usually, a screen called a standby screen is set as a default screen when the mobile phone is not used as a telephone. The standby screen can be arbitrarily set by the user by selecting a pre-registered image, an image shot by a camera, or an image downloaded by a browser such as a website or e-mail. The standby screen can be switched from the standby screen to a required operation screen or a required setting screen by performing a key operation or the like. In a mobile phone with a 3D display provided with the above 3D display function, it is proposed to adopt a 3D display screen as a standby screen.
[0004]
An example of the configuration of a 3D display that can be switched between 2D display will be described with reference to FIGS.
[0005]
FIG. 6 shows the layout of the pixels of a standard type of liquid crystal device (LCD). LCDs are used for color displays and consist of red, green, and blue pixels denoted by R, G, and B. The pixels are arranged as columns Col0 to Col5 in which red, green and blue pixels are vertically arranged. The leftmost column Col0 of pixels will then display the leftmost strip of the displayed image, the rightmost column Col1 will display the next column of the image, and so on.
[0006]
The display of FIG. 7 is used for performing 3D stereoscopic display. The 3D display includes a liquid crystal display device (including a polarizing plate) 101 that acts as a spatial light modulator for adjusting light from a backlight 102 according to image content to be displayed. The parallax optical system operates in cooperation with the liquid crystal display device 101 to form a viewing window. FIG. 7 shows a 3D autostereoscopic display of a front parallax barrier type including a parallax barrier 103 as a parallax optical system. The parallax barrier 103 comprises a plurality of vertically extending and laterally spaced parallel slits, as indicated by reference numeral 104, each slit being a pair of centers of a pixel row of an individual color. Is located. For example, the slit shown at 104 in FIG. 7 is aligned with a row 105 of blue pixels and a row 106 of green pixels.
[0007]
In order to ensure that the left and right viewing windows are in the correct arrangement, the left and right image data are provided in a manner shown in FIG. 8 to a liquid crystal display device 101 of the type shown in FIG. . In FIG. 6, the color image data of the leftmost strip of the left image is represented by red, green, and blue pixel columns indicated by Col0 left. Similarly, the color data of the leftmost strip in the right eye view is represented by a column of pixels indicated by Col0 right. This arrangement ensures that the image data of the left and right views are sent to the appropriate left and right viewing windows. This arrangement also ensures that all three pixel colors R, G, and B are used to display each view strip.
[0008]
Thus, in the layout shown in FIG. 8, compared to the layout shown in FIG. 6, the red and blue pixels in the leftmost column display image data in the left view while the green in the leftmost column. The pixels display the image data of the right view. In the next column, the red and blue pixels display the image data of the right view, while the green pixels display the image data of the left view. Thus, when using a standard liquid crystal display device of the type shown in FIGS. 6 to 8, the image data of the left and right views is "swapped" between the columns of RGB pixels. Need to be interlaced. Of course, depending on the display settings, a red or blue component may be exchanged in addition to the green component.
[0009]
FIG. 9 shows a part of the display controller. The data to be displayed is provided in serial form on a data bus 120, and the addresses defining the arrangement of the pixels on the screen are provided on an address bus 121. The data bus 120 is connected to the inputs of several banks of random access memory (two shown in the figure), such as memories (VRAMs) 122 and 123. The address bus 121 is connected to the memory management system 124. This memory management system 124 converts the screen address into a memory address that is provided to the address inputs of memories 122 and 123.
[0010]
Output ports of the memories 122 and 123 are connected to a first-in first-out (FIFO) register 125 of the video controller 126 via a latch circuit 130. The memories 122 and 123 and the register 125 are controlled so that individual pixel data is alternately read from the memories 122 and 123 and supplied to the display memory (VRAM) 127 in the correct order. The display memory 127 is a display memory that temporarily stores sorted display data between the driver circuit of the liquid crystal display device 101 and the driver circuit.
[0011]
FIG. 10 shows the latch circuit 130 in more detail. The latch circuit 130 includes latches 140 and 141 connected to output ports of the memories 122 and 123, respectively. Each of latches 140 and 141 comprises 24 1-bit latches arranged in groups of 8 to latch R, G, B data from the respective memories. Latches 140 and 141 collectively connect the latch enable inputs and connect to the output of timing generator 128 which provides latch enable signal L.
[0012]
Latch circuit 130 further includes three switching circuits 142, 143, and 144, each of which includes eight individual switching elements with control inputs connected together. The control inputs of the switching circuits 142, 143 and 144 are connected together and connected to the output of the timing generator 128 which supplies the switching signal SW. Timing generator 128 has a further output that provides write enable signal F to register 125. Here, it should be noted that the switching destination of the switching circuit 143 corresponding to the G data is different from that of the other switching circuits 142 and 144 with respect to the latch circuits 140 and 141.
[0013]
When the display data is available at the output ports of the memories 122 and 123, the latch enable signal L becomes high. Thus, the latches 140 and 141 latch the display data. Immediately after the latch enable signal L returns to low, the switching signal SW rises to a high level. Next, the switching circuits 142, 143, and 144 are switched to the state shown in FIG. 10, and the R, G, and B outputs of the latch 140 are connected to the register 125. Next, the write enable signal F is supplied to the register 125, and the RGB data from the latch 140 is written to the register 125. Further, the write enable signal F is disabled to prevent further data from being written to the register 125 until the next write enable signal.
[0014]
Next, the switching signal SW becomes low level, and the switching circuits 142, 143, and 144 connect the output of the latch 141 to the register 125. A further write enable signal F is generated, and the data from the latch 141 is written to the register 125. At this time, the data written to the register 125 at the same time is written to the display memory 127. The next latch enable signal L becomes high, and the same processing is repeated. In this manner, data is written from the memories 122 and 123 to the register 125 alternately. The data written in the register 125 is sequentially written in the display memory 127, and this process is repeated until the data necessary for displaying one screen is written in the display memory 127.
[0015]
Writing 2D or monoscopic data that must be displayed to both eyes of the observer is as follows. In this case, the parallax optical system by the parallax barrier 3 is removed. This is executed by directly inputting and storing the pixel data of the monoscope in the display memory 127 shown in FIG. In the 3D display mode, each of the left and right eye images has half the horizontal spatial resolution of the liquid crystal display device 101. When operating in the 2D or monoscopic mode, the liquid crystal display device 101 has twice the horizontal resolution as compared to the 2D image.
[0016]
The parallax optics may be selectable for its formation. FIG. 11 shows a display device configured to selectively display a 2D image and a 3D image by selectively forming a parallax optical system. Here, the parallax optical system uses, for example, a liquid crystal device (LCD) 150 for 2D / 3D switching and a patterned phase plate 151 as shown in the figure for the above. Here, the switching liquid crystal device 150 is a solid electrode for switching the entire surface between 3D and 2D. The patterned retardation plate 151 is obtained by replacing one of the two polarizing plates of the liquid crystal device with a polarizing plate. 11, parts having substantially the same functions as those in FIG. 7 are denoted by the same reference numerals. In the example of FIG. 11, the parallax barrier 103 'is arranged on the back side of the liquid crystal display device 101, that is, on the side of the backlight 102, but may be arranged on the front side of the liquid crystal display device 101 as illustrated in FIG.
[0017]
In the arrangement shown in FIG. 11, when displaying a 3D image, no voltage is applied to the switching liquid crystal device 150. Thereby, the liquid crystal molecules inside maintain the rotated state, and the slits substantially similar to the slits 104 of the parallax barrier 103 in FIG. 7 according to the pattern of the patterned retardation plate 151 due to the polarization characteristics of light with respect to the patterned retardation plate 151. To form When displaying a 2D image, rotation of the liquid crystal molecules is released by applying a voltage to the switching liquid crystal device 150, and the patterned retardation plate 151 controls the influence of input light on the pattern retardation plate regardless of the presence or absence of a pattern. And can be achieved by eliminating the formation of slits.
[0018]
The display of the 2D image is substantially the same as that of the left and right images displayed on a 3D autostereoscopic display having a fixedly formed parallax optical system as shown in FIG. It can be displayed in a 2D image. However, in this case, the parallax optical system is still formed on the display itself, and the user is affected by the parallax optical system when viewing the display even when displaying in a 2D image.
[0019]
On the other hand, if the formation of the parallax optical system is selectively performed as shown in FIG. 11, there is an advantage that the display of the 2D image can be performed without the influence of the parallax. In other words, in the case of the arrangement as shown in FIG. 11, when a display of a 2D image is selected, a parallax optical system is not formed at all or a part of the displayed area, and a commonly used liquid crystal display device is used. The device structure is substantially the same as that described above, and can be easily recognized from any position without being affected by the parallax between the right and left.
[0020]
[Patent Document 1]
JP 2001-251403 A (pages 4 to 12, FIG. 9)
[0021]
[Problems to be solved by the invention]
As described above, in a device for switching and displaying each image of 2D and 3D, for example, the operation of the switching liquid crystal device 150, which is a component of the parallax optical system, is switched, and input to the display memory 127 is performed. It is necessary to change the data structure.
[0022]
The screen of the 3D image is a device that switches and displays each image of 2D and 3D. In the display mode of the 3D image, each display data of the left eye and the right eye is input to the video controller 126 and rearranged by the video controller 126. Thus, it can be displayed in a 3D form.
[0023]
However, it is difficult to distinguish a character from a 3D image on a display screen mainly including a character display such as a time display of an alarm, an incoming call screen, or an incoming mail screen. In particular, when a large number of characters are to be displayed, such as when a telephone call or mail arrives, it is easier to see the information in a 2D image, and it is easier to identify the content.
[0024]
The present invention relates to an electronic device that displays a screen in a 3D image. When an alarm time notification set in advance or an incoming call or mail arrives, the 3D image screen is automatically changed to a 2D image screen in which the contents can be easily viewed. It is an object to provide an electronic device characterized by switching to display.
[0025]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an electronic apparatus having a display unit for selectively switching and displaying a 2D image and a 3D image, and displaying a screen in a 3D image on the display unit. And a switching control means for switching from the 3D image screen display to the 2D image screen display when the state change is detected.
[0026]
A second invention is characterized in that the electronic device includes an alarm setting unit, and switches from a 3D image screen by the display unit to a 2D image alarm notification screen display when the alarm is set by the alarm setting unit. I do.
[0027]
In a third aspect, the electronic device includes at least one of a telephone receiving unit and a mail receiving unit, and receives a 3D image from the display unit when the telephone or mail arrives. It is characterized by switching to a 2D image telephone incoming screen or a mail incoming screen display.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a clamshell-type camera-equipped mobile phone 1 according to an embodiment of the present invention in an open state.
[0029]
The mobile phone 1 includes a first housing 2 and a second housing 3. The first housing 2 and the second housing 3 are connected via a hinge 4, and are angularly displaced around the hinge 4. It is configured to be foldable by moving freely. As shown in FIG. 1, the mobile phone 1 includes a first housing 2 and a first display unit 5. The first display unit 5 is arranged so as to be located inside when the mobile phone 1 is folded. The first display unit 5 is a display body that electrically switches and displays 2D and 3D images, and displays an image based on image data sent via a first display driver unit 43 described later. Further, a first speaker 6 used at the time of a telephone call is provided above the first display unit 5.
[0030]
Next, the second housing 3 of the mobile phone 1 according to one embodiment of the present invention will be described. The input button group 7 includes keys for inputting numbers and characters. A function button group 8 is a button group for performing various settings / function switching in the mobile phone, and includes a power button 9 for turning on / off the power, a first shutter button 10 of a camera function described later, a mail function and guidance. A mail / guidance button 11 for displaying, a start / speaker receiving button 12 for starting a call and receiving a speaker, a multi-guide button 13 composed of a four-way button for selecting and deciding up / down / left / right on a function selection screen and a decision button. Consists of Further, a transmission microphone 14 is provided at a lower portion of the second housing 3.
[0031]
As an arrangement configuration of the second housing 3 of the mobile phone 1, it is usual to arrange the hinge 4, the function button group 8, the input button group 7, and the transmission microphone 14 in this order, but the arrangement is limited to this. Not something.
[0032]
FIG. 2 is an external perspective view of the mobile phone 1 in a folded state. As shown in FIG. 2, on the back surface of the first housing 2, a camera unit 21 and a light unit 22 are arranged in order from the hinge 4 side, and a second display unit 20, a second shutter button 23 and a second A second operation button group 24 is subsequently arranged.
[0033]
The second display unit 20 is arranged so as to be located outside when the mobile phone 1 is folded. The second display unit 20 is realized by a liquid crystal display, an EL display, or the like. An image based on image data of a character image, such as a captured image, time information, radio wave intensity, mail reception display, and the like transmitted via a second display driver unit 44 described later is displayed. When displaying these images, the image data sent from the second display driver unit 44 to the second display unit 20 is displayed such that the hinge 4 direction is upward when displayed. The second display unit 20 performs image display so that the hinge 4 direction is upward, so that when the user uses the mobile phone 1 in a folded state, the user uses the hinge with the hinge upward. The orientation of the second housing 3 does not change whether the user opens or closes the mobile phone 1. In other words, every time the mobile phone 1 is opened or closed, it is not necessary to change the direction of the mobile phone 1 or to change its position, thereby improving operability and convenience. The image display on the second display unit 20 also includes a captured image, and when viewing the captured image, it is not necessary to change the direction of the mobile phone 1 or to change the position, thereby improving operability and convenience.
[0034]
The camera unit 21 includes an image pickup lens, an image pickup element such as a charge coupled device (CCD) image sensor or a complementary metal oxide semiconductor (CMOS) image sensor, and three color filters of RGB. The camera unit 21 converts the light reflected by the subject and incident on the imaging lens into RGB three-color light through a color filter, and converts the RGB three-color light to the image sensor, respectively. As shown in FIG. 2, the camera unit 21 is provided outside when the mobile phone 1 is folded, and is located between the hinge 4 and the second display unit. When the user opens the mobile phone 1 and shoots, the user holds the second housing 3 and shoots.
[0035]
The light unit 22 is used as an auxiliary light source when capturing an image with the camera unit 21. Generally, a xenon tube is often used, but recently, there is also an LED which emits white light by simultaneously emitting RGB LEDs and uses it as an auxiliary light source.
[0036]
The second shutter button 23 is disposed at the center of the back of the first housing 2 and is located below the second display unit 20 when the mobile phone 1 shown in FIG. By arranging the second shutter button 23 at this position, the user can easily confirm the position of the shutter button in the folded state and easily take a picture.
[0037]
Further, on both sides of the second shutter button 23, second operation button groups 24a and 24b for performing various settings / operations using the second display unit 20 are provided. The second operation button group can operate various function settings, display / search of an address book, and confirmation / display / transmission of mail in cooperation with the second display unit 20. In addition, a zoom operation at the time of shooting, forward / reverse feed of a plurality of captured images, and the like can be operated.
[0038]
On the back surface of the second housing 3, an antenna unit 25, a helical unit 26 that can move up and down, a battery unit (not shown) for storing a battery, and a second speaker that sounds a ringtone are provided.
[0039]
The first housing 2 is mechanically connected to the second housing 3 through the hinge 4. The first housing 2 and the second housing 3 are electrically connected in the hinge 4. Flexible substrate is incorporated.
[0040]
FIG. 3 shows an example of an internal circuit configuration of the mobile phone 1.
[0041]
The control unit 40 is a control unit for controlling the operation of each part constituting the mobile phone 1, a shutter button control unit, a backlight control unit, a light control unit, and a display control unit. The image processing unit 41 includes an amplification unit, an A / D (analog / digital) conversion unit, and a signal processing unit. The amplifying unit amplifies the electrical signals corresponding to RGB sent from the camera unit 21 and sends them to the A / D conversion unit. The A / D converter converts the electrical signal (analog) corresponding to RGB converted by the amplifier into a digital signal, outputs image data, and sends the image data to the signal processor. The signal processing unit performs signal processing such as pixel interpolation processing on the image data sent from the A / D conversion unit. Further, the signal processing unit sends the image data subjected to the signal processing to the first memory 42 based on the control signal sent from the control unit 40. The camera unit 21 and the image processing unit 41 are imaging means for converting incident light into an electric signal and outputting the same as image data. The first memory 42 temporarily stores image data continuously sent from the signal processing unit. For example, temporally old image data is deleted or the newest image data is overwritten and temporarily stored.
[0042]
The control unit 40 transmits a control signal to the first and second display driver units 43 and 44, and sends the image data stored in the first memory 42 to the first and second display driver units 43 and 44. The first and second driver units 43 and 44 apply a drive voltage to each pixel electrode of the first and second display units 5 and 20 in accordance with image data to be displayed on the first and second display units 5 and 20. Is applied.
[0043]
The first and second backlights 45 and 46 are configured by light emitting diodes or the like, which are light emitting elements, and illuminate the first and second display units 5 and 20 to increase luminance. Control of turning on and off the first and second backlights 45 and 46 and control such as brightness adjustment are performed by the control unit 40. The first operation button group 47 includes the input button group 7 and the function button group 8 of the second housing 3 described above. The second operation button group is provided on the first housing 2 as described above.
[0044]
The first and second shutter buttons 10 and 23 are used to continuously send the image data that the user desires to save from the temporarily stored image data to the third memory 52. At the time of saving, an instruction signal to be operated by the user and to be saved is output to the control unit 40. The controller 40 stores the image data stored in the first memory 42 in the third memory 52 in response to the instruction signals from the first and second shutter buttons 10 and 23. Note that the second memory 48 is a memory used when displaying image data, like the first memory 42.
[0045]
The open / close detection unit 49 is a detection unit that detects whether the mobile phone 1 is folded. A detection switch (not shown) is provided inside the hinge 4, and a signal is sent to the control unit 40 according to the open / closed state, and the control unit 40 determines whether the mobile phone 1 is folded.
[0046]
The antenna unit 25 transmits and receives voice data, character data, image data, and the like when performing wireless communication with the base station via wireless radio waves. The radio unit 50 demodulates data received from the base station via the antenna unit 25 at the time of reception, and transmits character data and image data transmitted from the communication control unit 51 based on a predetermined protocol at the time of transmission. Send to control unit 40. The data received from the other party via the wireless unit 50 and the communication control unit 51 is stored in the third memory 52.
[0047]
The control unit 40 switches the display unit that displays an image based on the image data temporarily stored in the first memory 42 based on the detection result of the open / close detection unit 49. When the open / close detection unit 49 detects that the mobile phone 1 is folded, the control unit 40 outputs the image data from the first memory 42 to the second display driver unit 44, and the second display unit 20 To display the image. When the open / close detection unit 49 detects that the mobile phone 1 is not folded (open), the control unit 40 outputs the image data from the first memory 42 to the first display driver unit 43, An image is displayed on the first display unit 5.
[0048]
Since the camera section 21 is provided outside when the mobile phone 1 is folded, when capturing an image of a subject other than the photographer of the mobile phone 1, the photographer operates the camera with the mobile phone 1 opened. The image is taken with the unit 21 facing the subject side opposite to the user. In this state, the open / close detection unit 49 detects that the mobile phone 1 is open, that is, is not folded, and an image based on the image data output from the camera unit 21 is displayed on the first display unit 5. . This allows the user to use the first display unit 5 as a finder during imaging.
[0049]
On the other hand, when capturing an image of the photographer himself as a subject, the photographer directs the camera unit 21 toward the user with the mobile phone 1 folded. In this state, the open / close detection unit 49 detects that the mobile phone 1 is folded, and an image based on the image data output from the camera unit 21 is displayed on the second display unit 20. Thus, the photographer can use the second display section 20 as a finder at the time of photographing. In the mobile phone 1 according to the embodiment of the present invention, the user himself can be photographed even when the mobile phone 1 is opened.
[0050]
The first display unit 5 includes a display device capable of selectively displaying a 2D image and a 3D image by selectively forming a parallax optical system as described with reference to FIG. The second display unit 20 includes a normal display device that displays only a 2D image. The first display driver unit 43 connected to the first display unit 5 includes the memories 122 and 123 and the video controller 126 described with reference to FIG.
[0051]
When taking an image taken by the camera unit 21 while using the first display unit 5 as a finder, the first display unit 5 is set to a 2D image display mode. That is, when the mobile phone of the present embodiment is set to the imaging mode by a key operation or the like, the first display unit 5 is set to the 2D image display mode. The image captured by the camera unit 21 is not distinguished into a left-eye image and a right-eye image until it is converted specifically for a 3D image, and is generated as a 2D image. Therefore, in the first display unit 5, the 2D / 3D switching liquid crystal device 150 is switched for 2D images, and image data captured by the camera unit 21 is transferred from the first memory 42 to the first display driver unit 43. It is directly input to the display memory 127 of the video controller 126. Thus, an image captured by the camera unit 21 is displayed in real time until the shutter is operated as a finder in 2D display.
[0052]
The display of the 3D image on the first display unit 5 can be used, for example, when the content is transmitted as the content of the 3D image data from a website or an e-mail and received by the mobile phone of the present embodiment. The content is preferably an animation, a landscape photograph, or other suitable for displaying in 3D image rather than 2D, or more enjoyable in 3D, but is not limited thereto. However, in the present embodiment, the data to be received needs to be image data divided into the left eye and the right eye as the content data structure due to the characteristics of the display device. Alternatively, by incorporating a 3D conversion function in the mobile phone 9, a video taken by a camera unit provided in the mobile phone itself may be converted into 3D image data divided into left and right eyes and displayed. . Alternatively, 3D image data may be transmitted from another mobile phone having the same function and received and displayed.
[0053]
The standby screen is usually set as a default screen when the mobile phone is not used as a telephone. The standby screen can be arbitrarily set by the user by selecting a pre-registered image, an image shot by a camera, or an image downloaded by a browser such as a website or e-mail. The 3D image standby screen is a device that switches and displays each image of 2D and 3D, and in a 3D image display mode, inputs left-eye and right-eye image data to the video controller 126 in the first display driver unit 43, The images can be displayed in a 3D form by rearranging them in the video controller 126. The 3D display is suitable for displaying a photo, a picture, or an animation using a bitmap, and can be a standby screen that can be enjoyed.
[0054]
FIG. 4 is a flowchart illustrating control for switching from the 3D image screen display to the 2D image screen display when an alarm time is notified or an incoming call or mail is received.
[0055]
In the following example, a case will be described in which a standby screen for a 3D image is displayed on the first display unit 5. However, as described above, the content of the 3D image data received from the website or the mail is reproduced. The same applies to a case where a video taken by a camera unit provided in a mobile phone is converted into 3D image data and displayed, or a case where an image captured in advance is reproduced from a memory in which it is recorded.
[0056]
The 3D data for the 3D screen is read from the third memory 52 to the first memory 42, and (S21) the 3D data read to the first memory 42 is input to the first display driver unit 43, and the first display unit At 5, the standby screen is displayed in a 3D image (S22).
[0057]
When the standby time is displayed in the 3D image as described above, when the alarm time arrives, a telephone call arrives, or a mail arrives (S27), the mode is switched from the 3D mode to the 2D mode (S28). The control unit reads out the alarm screen data from the third memory 52 to the first memory 42 or, in the case of an incoming call or mail, the control unit 40 similarly reads the respective incoming screen data from the third memory 52 to the first memory 42 (S29), the respective data are input to the first display driver unit 43 in a 2D image screen, and the respective display screens are displayed on the first display unit 5 (S30).
[0058]
FIGS. 5A, 5B, 5C, and 5D show display examples in this switching display. (A) is a display example of a standby screen by a 3D image, (b) is alarm time notification by a 2D image, (c) is an incoming call, (d) is a 2D image display example of an incoming mail, Both 2D image display screens are easy to see and are suitable for displaying coded characters and the like.
[0059]
In particular, when a call or mail arrives, the displayed content is mainly composed of characters and the number of displayed characters is large, so if the number of characters displayed on the display screen is displayed as many characters as possible, the content will be transmitted quickly and accurately, An easy-to-view 2D display is appropriate. Here, the alarm time is set so that the display of the set alarm time is clearly displayed in a 2D image.
[0060]
Although not shown, the time may be notified by sound, light, or vibration by a vibrator in combination with the alarm time. In the case of an incoming call or an incoming mail, it is also easy to understand by displaying the contents of the incoming call in 2D image characters in addition to the sound, light and vibration of the vibrator.
[0061]
If neither the alarm time nor the incoming call or the incoming mail is received and any key is input (S23), the display mode is switched from the 3D mode to the 2D mode (S24), and the first memory is read from the third memory 52. The 2D image screen data is read out to the memory 42 (S25), input to the first display driver unit 43, and displayed on the first display unit 5 as a 2D image (S26). In the 3D image screen display, since it is necessary to view the display from a certain direction, it may be difficult to keep looking at the display for a long time. The above-mentioned key operation can cope with such a case. Even if there is no alarm notification, incoming telephone call, or incoming mail, the user can easily view the 2D image by switching the 3D image screen display to the 2D image screen display by any key input. Display the image screen.
[0062]
If it is not a key input, the 3D standby screen display (S22) is continued.
[0063]
In the above description, the camera-equipped mobile phone 1 has been described as an embodiment of the present invention. However, even if there is no camera, the mobile phone 1 may be configured to include a display unit that selectively switches and displays 2D and 3D images. For example, the present invention can be applied.
[0064]
Further, for example, a user may use a mobile phone equipped with a camera capable of capturing a 3D image, display the 3D image currently captured by the camera on a display unit, and capture the image while actually viewing the 3D image.
[0065]
Further, in the above-described example, the electronic device in which the first housing and the second housing are configured to be foldable by the connection unit has been described. However, even if there is one housing, 2D and 3D images can be displayed. The present invention can be applied to any configuration including a display unit that is selectively switched and displayed.
[0066]
In the above description, the first display unit 5 has a configuration as shown in FIG. 11 and can be selected to form a parallax optical system. However, a 2D image is displayed using a device as shown in FIG. 7 or FIG. In this case, the present invention can be applied to a case where display data is changed so that the parallax observed by the left and right eyes is the same while the parallax optical system is formed.
[0067]
In addition, the present invention is not limited to a mobile phone, and can be applied to mobile devices such as a mobile terminal and a mobile personal computer, information devices such as a desktop personal computer, and various electronic devices including audio / video devices.
[0068]
The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
[0069]
【The invention's effect】
As described above, according to the present invention, there is provided an electronic apparatus including a display unit in which 2D and 3D images are selectively switched and displayed, and when a standby screen of a 3D image is displayed, an alarm is notified or a telephone call or mail is received. Thus, by switching the 3D image display to the 2D image alarm notification or the incoming call or incoming mail screen, it is possible to make the display easy to see the contents.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an electronic device according to an embodiment.
FIG. 2 is an external perspective view of the electronic device according to the embodiment in a folded state.
FIG. 3 is a block diagram illustrating a configuration of an electronic device according to the present embodiment.
FIG. 4 is a flowchart showing a screen control process of the electronic device according to the embodiment.
FIG. 5 is a diagram showing a display example of the electronic device according to the present embodiment.
FIG. 6 is a diagram showing a pixel layout of a liquid crystal.
FIG. 7 is a cross-sectional view illustrating a configuration example of a 3D display device.
FIG. 8 is an illustration of a pixel layout for explaining rearrangement for 3D display.
FIG. 9 is a block diagram illustrating a configuration example of a display controller.
FIG. 10 is a block diagram showing some details of a display controller.
FIG. 11 is a cross-sectional view illustrating a configuration example of a display device capable of 2D / 3D switching.
[Explanation of symbols]
1 Mobile phone 5 First display unit 40 Control unit 42 First memory 43 First display driver unit 52 Third memory

Claims (3)

An electronic device having display means for selectively switching and displaying 2D and 3D images, and displaying a screen in a 3D image on the display means, and detecting a change in state of the electronic device. An electronic device having a 2D (two-dimensional) and 3D (three-dimensional) display function, comprising: switching control means for switching from the 3D image screen display to a 2D image screen display when the state change is detected. machine. 2. The electronic device according to claim 1, wherein the electronic device includes an alarm setting unit, and switches from a 3D image screen displayed by the display unit to a 2D image alarm notification screen display when the alarm is set by the alarm setting unit. 3. Electronic device having a 2D (two-dimensional) and 3D (three-dimensional) display function. The electronic device includes at least one of a telephone receiving unit and a mail receiving unit, and receives a 2D image of the telephone from the 3D image screen by the display unit when the telephone or the mail arrives. 2. The electronic apparatus according to claim 1, wherein the electronic apparatus is switched to an incoming call screen or an incoming mail display screen.

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