JP2014017536A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display, when three-dimensionally displaying a content in which video data and character data are mixedly present, the character data in an easily viewable manner.SOLUTION: A data conversion function for converting two-dimensional data into three-dimensional data is provided. When a user reads characters, two-dimensional display is performed without conversion into three-dimensional data, so that character data can be easily viewed.

Description

  The present invention relates to a video display device capable of displaying video content such as video data and character data in two-dimensional display and three-dimensional display.

  Recent terrestrial digital TV broadcasts, satellite TV broadcasts, 1Seg broadcasts, etc. are not only video and audio, but also data related to program content such as performer information and program commentary by data broadcasting, emergency alerts, weather forecasts, traffic information Such regional information is also transmitted, and the viewer can selectively obtain desired information. On the other hand, currently, television broadcasting transmits a two-dimensional video signal. It has also been proposed to change this 2D video to a 3D (stereoscopic, 3D) video. For example, Patent Document 1 is a patent document relating to a method of converting a two-dimensional (planar, 2D) image into a three-dimensional image. 3D video display technology is becoming more and more widely used in the future, and is not limited to television receivers, but may be widely applied to personal computers, portable information terminals, electronic book terminals, game machines, and the like. For example, Patent Document 2 is a patent document relating to a mobile device capable of three-dimensional display. The orientation of the display screen changes according to the vertical / horizontal switching of the display screen, three-dimensional display is performed on the horizontal screen, and two-dimensional display is performed on the vertical screen. It is possible to realize a three-dimensional display linked to the operation of the mobile device.

JP-A-8-149517 JP 2010-175743 A

  However, in the three-dimensional display by the method of converting the two-dimensional video according to Patent Document 1 to the three-dimensional video and the three-dimensional display by the portable device according to Patent Document 2, for example, character data included in the data broadcast transmitted by broadcasting However, there is a problem that the characters are difficult to read because they are displayed three-dimensionally. Displaying video data such as movies and animations in three dimensions is meaningful because it enhances entertainment, but it is important to fully convey the contents for displaying character data. Some viewers may feel that the character information is difficult to see by displaying the character information in three dimensions, or may feel tired eyes. Therefore, for example, when character data included in video content is displayed on a mobile terminal, it is desirable to perform two-dimensional display. In addition, this is not limited to data broadcasting. When displaying 3D video, e-mail and electronic file characters provided in the mobile terminal, and numbers such as schedule books and clocks, 3D video being viewed is also displayed. It is desirable to display two-dimensionally.

  The present invention has been made in view of the above circumstances, and an object of the present invention is a video display device capable of displaying video information in three dimensions, with or without displaying character information. It is an object of the present invention to provide a video display device capable of switching between the two.

  The video display device of the present invention is a video display device capable of displaying video data and character data, a display unit capable of displaying the video data in two-dimensional display and three-dimensional display, and the video data being two-dimensional. A data conversion unit capable of converting the two-dimensional data into three-dimensional data and a display control unit capable of controlling the display unit, the display control unit displaying the character data on the display unit If not, the two-dimensional data of the video data is converted into the three-dimensional data by the data conversion unit, and the three-dimensional display is enabled on the display unit. The display control unit of the video display device of the present invention, when displaying the character data on the display unit, stops displaying the three-dimensional data of the video data, and displays the two-dimensional display on the display unit. Character data is displayed.

  The mobile terminal of the present invention is equipped with the video display device and includes a sensor unit that detects the orientation of the display unit, and the display control unit displays character data based on the direction detected by the sensor unit. It is characterized by determining availability. In the portable terminal of the present invention, when the sensor unit detects that the display unit is turned sideways, the display unit displays three-dimensionally. In the portable terminal of the present invention, the sensor unit is a gravity sensor or a geomagnetic sensor.

  The video data of the video display device of the present invention is broadcast data. In the video display device of the present invention, the video data is camera data. The video data of the video display device of the present invention is an electronic mail.

  The video display device of the present invention can switch to two-dimensional display when the user wants to read the character information, so that the user can easily see the character information.

1 is a schematic external view when a video display device according to Embodiment 1 of the present invention is mounted on a mobile terminal 100. FIG. The block diagram explaining the structure of the portable terminal 100 in Embodiment 1 of this invention. The block diagram which shows the principal part structure of the display control part 202 in Embodiment 1 of this invention. The processing flowchart of the portable terminal 100 in Embodiment 1 of this invention. The processing flowchart of the portable terminal 100 in Embodiment 1 of this invention. The figure explaining a parallax barrier system. The block diagram explaining the structure of the portable terminal 101 in Embodiment 2 of this invention. The processing flowchart of the portable terminal 100 in Embodiment 1 of this invention. The example of a display of the portable terminal 100 in Embodiment 1 of this invention.

  In this application, video information refers to GIF (Graphics Interchange Format) format in addition to dramas and sports programs broadcast on terrestrial digital broadcasts, satellite broadcasts, 1Seg broadcasts, image data captured by cameras, video scripts supplied on DVDs, etc. Image file format, still image format such as JPEG (Joint Photographic Experts Group) format, and display including e-mail, text file, electronic document file, video data (video signal), It consists of various data such as character data (character signal), voice data (voice signal, voice information), graphical data, and the like.

  The video data means video data separated from audio data and character data by receiving terrestrial digital broadcasting, demodulating processing, error correction processing, and the like, video data taken by a camera, and the like. The character data is data separated from video data and audio data by receiving terrestrial digital broadcasting, BS broadcasting, etc., performing demodulation processing and error correction processing, and includes subtitle data. However, it does not include character information such as a time display transmitted in advance by combining with video data at a broadcasting station.

  The present application relates to a video control apparatus that controls display of video data and character data included in video information, and in particular, performs control to switch between three-dimensional display and two-dimensional display when character information is not displayed. Embodiments are shown below.

[Embodiment 1]
A first embodiment will be described with reference to FIGS. 1 to 6. FIG. 1 is a schematic external view when the video display apparatus according to the first embodiment is mounted on the mobile terminal 100. As shown in FIG. 1, the mobile terminal 100 includes an operation unit 101, a display unit 102, and a speaker unit 103, and can display data broadcasts such as one-segment broadcasting and video scripts. For example, when the mobile terminal 100 is oriented vertically as shown in FIG. 1A, video information is displayed on the upper part of the display unit 102, and character information such as subtitles and characters is displayed on the lower part. In this case, the display is a two-dimensional display. In addition, when the screen is turned sideways as shown in FIG. 1B, video information can be displayed on the entire display unit 102, and information such as subtitles and characters can be displayed over the displayed video. Again, the display is a two-dimensional display. Further, as shown in FIG. 1C, only video information can be displayed without displaying subtitles or character information, and in this case, three-dimensional display can be performed. However, as shown in FIG. 1C, it is possible to display two-dimensionally even if only video information is displayed without displaying subtitles or character information. In addition, it is possible to display only video information or only information such as subtitles and characters in a state where the portable terminal 100 is in a portrait orientation as shown in FIG. Similarly, it is also possible to display only video information or display only information such as subtitles and characters in a state of being horizontally oriented as shown in FIG. Such a combination of switching between the two-dimensional display and the three-dimensional display, the display of the video information and the display of the character information can be changed by the user's operation through the operation unit, for example, or set in advance through a menu screen as shown in FIG. It is also possible to change automatically depending on the conditions. In this embodiment, when the mobile terminal is in the vertical direction (direction), the long side of the mobile terminal is in the vertical direction as shown in FIG. 1A, and in the horizontal direction is the length of the mobile terminal as shown in FIG. The side is parallel to the horizontal direction. Note that the vertical and horizontal definitions when the mobile terminal is slanted can be arbitrarily set, for example, by setting a gravity sensor and / or a geomagnetic sensor described later.

  FIG. 2 is a block diagram illustrating the configuration of the mobile terminal 100. The main control unit 201 controls each block in FIG. The main control unit 201 includes a display control unit 202, and the display control unit 202 controls the display of the main display unit 203 and the sub display unit 204, and particularly performs control related to three-dimensional display.

  FIG. 3 is a block diagram showing a main configuration of the display control unit 202 of FIG. As shown in FIG. 3A, the display control unit 202 includes a content supply unit 301, a video data decoding unit 302, a character information decoding unit 303, a switch 304 (S1 in FIG. 3), a switch 305 (S2 in FIG. 3), A data conversion unit 306 is provided. The data conversion unit 306 can convert 2D video data into 3D video data, and can also convert 3D video data into 2D video data.

  For example, the content supply unit 301 is connected to the TV tuner 205 and outputs video data of data broadcasting such as terrestrial digital broadcasting to the video data decoding unit 302 and character information to the character information decoding unit 303. The video data decoding unit 302 converts the encoded video data so that it can be displayed on a display unit such as the main display unit 203. The character information decoding unit 303 converts the encoded character data so that it can be displayed on a display unit such as the main display unit 203. The switch 304 acquires the video data output from the video data decoding unit 302 and selectively outputs it to the data conversion unit 306 or the display unit based on an instruction from the main control unit 201. The switch 305 acquires character data output from the character information decoding unit 303 and selectively outputs the character data to the display unit based on an instruction from the main control unit 201 or does not output it. In FIG. 3B, the switch 305 turns off S2 so as not to output the character data output from the character information decoding unit 303 to the display unit. Here, the character data is not output on the display unit, and the operation of the character information decoding unit 303 may be stopped. A method of controlling the switches 304 and 305 of the main control unit 201 will be described later. The data conversion unit 306 converts the received two-dimensional data into three-dimensional data and outputs it to the display unit.

  In FIG. 3, the content supply unit 301 at the time of receiving a digital television broadcast operates to output video data and character data at least separately as outputs. Normally, the TV tuner 205 performs decompression processing, decoding processing, error correction processing, separation of video data and character data, and the like of broadcast data received from the TV antenna 210. Therefore, in FIG. 3, the video data decoding unit 302 and the character information decoding unit 303 are not configured, and the output data of the TV tuner 205 can be directly input to the switch 304 and the switch 305.

  The content supply unit 301 also receives video script data, camera data, electronic mail, electronic document files, and the like stored under the control of the control unit from the memory 2061 and / or the large-capacity memory 2062, for example. These data are processed in the same way as at the time of broadcast reception on the digital telegram described above. For example, in the case of video script data or camera data, the video data is displayed as two-dimensional data as shown in FIG. 3C by the switch 304 and the data converter 306. In addition, when the video information is displayed three-dimensionally, it is converted into three-dimensional data and displayed as shown in FIG. Further, for example, in the case of an e-mail, the image data attached to the e-mail is displayed as two-dimensional data or converted into three-dimensional data by the switch 304 and the data conversion unit 306 and displayed as e-mail characters. Data can be displayed or not displayed by the switch 305.

In addition, the content supply unit 301 is connected to, for example, the main camera 207 and the sub camera 208, converts the shooting data shot by either camera into three-dimensional data and displays it on the display unit, The captured image is configured to display a 3D image, and can be configured to be capable of 3D display without being processed by the data conversion unit 306.
Further, the data conversion unit 306 can convert the three-dimensional data into the two-dimensional data and display it as necessary.

  FIG. 4 is a processing flow of the mobile terminal 100 according to the first embodiment, and is an example in the case of receiving a television such as a digital television broadcast, a one-segment broadcast, or a digital satellite television broadcast. In FIG. 4, S means a step. For example, S41 is step 41. FIG. 4 shows only the part related to the invention. Other parts not related to the invention can be implemented arbitrarily. When the user of the portable terminal 100 turns on the power or performs an operation for receiving television (started in FIG. 4), reception of the one-segment broadcasting is started (S40). The mobile terminal 100 has a function of detecting the orientation of the mobile terminal such as a gravity sensor or a geomagnetic sensor in the sensor unit 209 illustrated in FIG. When the mobile terminal 100 is in the horizontal direction (Yes in S41), the gravity sensor or the geomagnetic sensor configured in the sensor unit 209 detects that the mobile terminal 100 is in the horizontal direction, and outputs the detection result to the main control unit 201. . When the detection result from the sensor unit 209 is received, the main control unit 201 causes the switch 304 of the display control unit 202 to output the data of the video data decoding unit 302 to the data conversion unit 306 as shown in FIG. And the switch 305 is controlled not to display the data of the character information decoding unit 303 on the display unit. As a result, the received video data is three-dimensionally displayed on the display unit as shown in FIG. 1C (S42). When the portable terminal 100 is in the portrait orientation (No in S41), the gravity sensor or the geomagnetic sensor configured in the sensor unit 209 detects that the portable terminal 100 is placed in the portrait orientation, and detects to the main control unit 201. Output the result. When receiving the detection result from the sensor unit 209, the main control unit 201 causes the switch 304 of the display control unit 202 not to output the data of the video data decoding unit 302 to the data conversion unit 306 as shown in FIG. The switch 305 is controlled to display the data of the character information decoding unit 303 on the display unit. As a result, the received video data and character data are two-dimensionally displayed on the display unit as shown in FIG. 1A (S43).

  As described above, when the video display device according to the first embodiment is mounted on a portable terminal, FIG. 4 shows whether character data is displayed or not depending on the direction of the portable terminal, and is displayed when character data is displayed. When the character data is not displayed, the display unit is displayed three-dimensionally. With this configuration, the user can surely read the character data so that there is no mistake in the two-dimensional display. Note that FIG. 4 illustrates an embodiment in which video data and character data are displayed when the mobile terminal is oriented vertically, and only video data is displayed when the mobile terminal is oriented horizontally. Conversely, when the mobile terminal is oriented horizontally, video data and text data are displayed. When the screen is displayed in the portrait orientation, only the video data may be displayed. In addition, although the sensor unit 209 detects the orientation of the mobile terminal, other methods may be used. For example, although not shown in the figure, a description will be given with reference to FIG. 2. A so-called clamshell type portable terminal including a first housing having a main display unit 203 and a second housing having an operation unit 221 is provided. Yes, this portable terminal is in the state of (a) or (c) in FIG. 3 when the first casing rotates laterally in the short side direction with respect to the second casing. That is, when the main display unit 203 and the operation unit 221 in FIG. 2 are positioned so as to face each other in the vertical direction, the character data and the video data are displayed two-dimensionally, and the main display unit 203 rotates to form one form. In a state where the main display unit 203 can be seen outside, the operation unit 221 in the second housing is hidden behind the main display unit 203, or in the second form, the long sides of the first housing and the second housing are arranged side by side. Then, when the operation unit 221 and the main display unit 203 are rotated to a state in which the operation unit 221 and the main display unit 203 can be visually recognized, the state shown in FIG. 3B is obtained, and the video data can be displayed three-dimensionally and the character data can be omitted. is there.

  FIG. 5 is another example of FIG. Since the process of step S40 from the start of FIG. 5 is the same as that of FIG. 4, description thereof is omitted. In step S41 in FIG. 4, the gravity sensor or the geomagnetic sensor included in the sensor unit 209 detects the orientation of the mobile terminal, but in S50 in FIG. 5, the user operates the operation unit to determine whether to display character data. It is a step to decide. When the user operates to display the character data (Yes in S51), the main control unit 201 sets the switch 304 of the display control unit 202 to the data of the video data decoding unit 302 as data as shown in FIG. Control is performed so that the data is not output to the conversion unit 306, and the switch 305 is controlled to display the data of the character information decoding unit 303 on the display unit. As a result, the received video data and character data are two-dimensionally displayed on the display unit as shown in FIG. 1A (S52). When the user operates not to display the character data (No in S51), the main control unit 201 switches the switch 304 of the display control unit 202 of the video data decoding unit 302 as shown in FIG. Data is controlled to be output to the data conversion unit 306, and the switch 305 is controlled not to display the data of the character information decoding unit 303 on the display unit. As a result, the received video data is three-dimensionally displayed on the display unit as shown in FIG. 1C (S53). On the other hand, if the display of the character data is stopped while the character data and the video data are being displayed, the two-dimensional video can be continuously viewed in the state (a) other than the state (b) of FIG. Also good. This determination may be made in accordance with the contents set in advance by the user in the item “Yes / No” for “(3) 3D display” in FIG.

  The above is the step of S51, and it is assumed that the user performs an operation of displaying or not displaying the character data, but it is also possible to branch depending on the setting. That is, if the user has set in advance to display character data, the process proceeds from step S51 to step S52 to perform two-dimensional display. If the user has previously set not to display character data, the process proceeds to step S51. It is also possible to shift from step to step S53 to perform three-dimensional display. Alternatively, if the user has set in advance to display the three-dimensional data, the process proceeds from step S51 to step S53, where the video data is displayed in three dimensions, the character data is not displayed, and the user does not display the three-dimensional data in advance. If it is set not to display, it is possible to shift from the step of S51 to the step of S52 to perform two-dimensional display of both video data and character data.

  By configuring as described above, it is possible to switch between the two-dimensional display and the three-dimensional display without interlocking with the direction of the portable terminal 100, or not to perform the three-dimensional display when displaying characters. . Even if it is configured as shown in FIG. 5, it is possible to obtain the effect of making the character data easy to read as in FIG.

  Next, FIG. 9 shows a setting example regarding display. This display setting menu includes items of basic settings for “(1) caption display”, “(2) data broadcasting”, “(3) stereoscopic display”, and “(4) rotation operation”. For these settings, a selection button 1011, an enter button 1010, and a cancel button 1012 are provided on the housing and used for menu operations and the like. As an operation of the display setting menu, the selection button 1011 can select each item and setting content in the vertical direction and the horizontal direction. Actually, the cursor moves according to the setting operation, and it becomes possible to visually recognize which is selected. The setting content selected by this selection button and where the cursor is positioned is determined by pressing the determination button 1010, and the setting becomes valid. If there is a mistake, it can be restored with the cancel button 1012. Or you may reset. Further, the menu display area 1020 is illustrated as being displayed on the entire display unit 102 in FIG. 9, but is an example, and may be a part of the display unit 102.

  Here, “(1) caption display” is an item for setting whether or not to display the caption display on the received video. When “ON” is selected, it is set to be displayed. When “OFF” is selected, It is set not to display. “(2) Data broadcast” is an item for setting whether or not to display a data broadcast, and is set so that it is displayed when “display” is selected, and is not displayed when “hide” is selected. . “(3) 3D display” is an item for setting whether or not 3D display is performed. When “Yes” is selected, 3D display is set. When “No” is selected, 3D display is not set. That is, it becomes a two-dimensional display. “(4) Rotation operation” is an item for setting whether or not to perform three-dimensional / two-dimensional display in the vertical and horizontal directions of the apparatus of the present invention. When “Invalid” is selected, the 3D / 2D display is not switched by the vertical and horizontal operations.

  Next, the display control based on the setting of FIG. 9 described above will be described with reference to FIG. Here, it is an example in the case of receiving a television such as a digital television broadcast, a one-segment broadcast, or a digital satellite television broadcast. First, television reception is selected as the operation function of the apparatus in S81. In S82, the television broadcast is actually received and the video information can be viewed. The determinations in S83, S85, S89, and S92 are determined with reference to the setting contents shown in FIG. The setting contents may be stored in the memory 2061 in FIG. Alternatively, it may be stored in another memory. If “No” is set for the three-dimensional display in S83, the two-dimensional display is performed regardless of the other settings described here. In FIG. 3, the control contents are (a) or (c). However, as in the case of 3D television broadcasting, when the 3D content is not displayed in 3D from a television broadcast or other content acquisition destination such as the Internet or a storage medium such as a disk or memory, the switching is performed as shown in FIG. However, the data conversion unit 306 converts the 3D video data into 2D video data and displays it as 2D video information. If “3D display” in FIG. 8 is “YES”, the process proceeds to the next determination in S85. Here, when the vertical and horizontal positions of the apparatus of the present invention are rotated, it is determined whether or not to switch between 3D / 2D display. If “invalid” is selected here, 3D / 2D display is determined and displayed regardless of the vertical and horizontal states of the apparatus, and the process proceeds to the next determination S89. On the other hand, if “valid”, it is determined in S86 whether or not to give priority to the subtitle display over the display control by rotation. Although this setting is not particularly shown for the setting menu, it is set in advance using the setting menu as shown in FIG. If the confirmation of subtitle priority is “Yes”, the process proceeds to the next step S89. In the case of “No”, the process further proceeds to S87, in which it is determined whether to prioritize data broadcasting over display control by rotation. This setting is also set in advance by the display menu setting in the same manner as “Subtitle priority” in S86. In the case of setting to prioritize data broadcasting in S87, “Yes” is selected and the process proceeds to the next step S89. If the setting is not to prioritize data broadcasting, “No” is selected and the process proceeds to the next step S88 to determine the 2D / 3D display according to the rotation direction of the apparatus. Although not specifically illustrated and described here, S89 determines whether or not to display subtitles based on the setting menu screen described above. If “OFF” is set here, it is determined that no caption is displayed, and the process proceeds to the next step. On the other hand, when “ON” is set, subtitles are displayed. Therefore, it is confirmed whether or not subtitles are being broadcast in the current broadcast. Are superimposed and displayed two-dimensionally. On the other hand, if “No”, the process proceeds to the next step S92.

  In S92, it is determined whether or not to display the data broadcast. If “non-display” is set here, the process proceeds to the next step S94. On the other hand, if “display” is set, the process proceeds to S93 to check whether data broadcasting is currently being performed. Here, if data broadcasting is not performed, “No” is determined, and the process proceeds to the next step S94. If data broadcasting is being performed, “Yes” is determined, and the process proceeds to S91 to perform two-dimensional display. Here, the display content may be the video data and the character data displayed simultaneously on the same screen, or only the character data may be displayed on the entire screen.

  In next step S94, it is determined whether or not there is a mail display request from the user. In this case, the mail is displayed while watching the TV. In other words, by dividing the screen and displaying the television and the mail, the mail can be read and written while watching the television. If there is no mail display request, it is determined as “non-display”, and the process proceeds to S96 to display the video data three-dimensionally. On the other hand, if there is a request for mail display, “display” is determined and the process proceeds to S91 to display the mail display and the television display in two dimensions. Alternatively, only the mail may be displayed in two dimensions on the entire screen. Returns to step S81 and repeats the above process after repeatedly setting the display in S84, S88, S91, and S96, respectively, to repeat the determination process, where the user performs the TV viewing operation in S81. It can be confirmed whether or not the display has been stopped, and if it is stopped, the display related to the other selected function is performed. On the other hand, if the television is to be continuously viewed or newly viewed, the process proceeds to step S82 and the above-described processing is performed.

  A three-dimensional display method will be described. In general, as a three-dimensional display method, many methods such as a time division separation method and a parallax barrier method have been proposed. The gist of the first embodiment is to switch between two-dimensional display and three-dimensional display by controlling the display unit, and how to perform the three-dimensional display itself is arbitrary, but as one specific example of implementation FIG. 6 illustrates the parallax barrier method. In the parallax barrier method, as shown in FIG. 6, a right-eye image is displayed on the right eye, and a left-eye image is displayed on the left eye, so that a stereoscopic effect is felt. There is a feature that three-dimensional display can be realized without using special glasses. Note that the right-eye video and the left-eye video can be output to the right eye and the left eye regardless of whether the display screen is horizontal or vertical as shown in FIG. 3D display can be performed regardless of whether the portable terminal is in the horizontal direction or the vertical direction as in the terminal 100. In addition, since the parallax barrier method can prevent the parallax barrier from being electrically output or output, when the character data is not displayed as in the mobile terminal 100 of the first embodiment, the three-dimensional display is performed, and when the character data is displayed. Control such as two-dimensional display is possible. In addition, if the display unit is fixed to perform 3D display in the horizontal direction and 2D display in the vertical direction, there is no need to use a display device that can change the direction of the parallax barrier.

  A configuration that is not described in the block diagram of FIG. 2 will be described. The main control unit 201 and other application programs operate in the order of the programs stored in the program memory 2060. Although not shown, a temporary program may be expanded in the work memory as necessary, and the program may be operated by the expanded program. Further, necessary data may be temporarily stored in the work memory and used for various processes. The main display unit 203 corresponds to the display unit 102 in FIG. 1, and the sub display unit 204 is a display unit that allows the user to see necessary information even when the portable phone is folded. The wireless communication antenna 211 receives a signal transmitted from the communication base station and outputs the signal to the wireless unit 214. In addition, the wireless communication antenna 211 transmits a signal output from the wireless unit 214 to the communication base station as a wireless signal. The wireless unit 214 performs down-conversion and demodulation processing on the signal output from the wireless communication antenna 211 and outputs the result to the communication control unit 215. Radio section 214 performs modulation processing and up-conversion on the signal output from communication control section 215 and outputs the result to radio communication antenna 211. The communication control unit 215 outputs a voice call from another terminal received from the communication base station to the voice processing unit 216 or stores packet data received from the communication base station in the memory 2061 in accordance with an instruction from the main control unit 201. . Further, the communication control unit 215 receives a voice call of the user of the portable terminal 100 from the voice processing unit 216 in accordance with an instruction from the main control unit 201, performs processing of the radio unit 214, and transmits from the radio communication antenna 211 to the communication base station. Send. The audio processing unit 216 converts audio information acquired from the communication control unit 215 and music data stored in the memory 2061 into an audio signal and outputs the audio signal from the speaker 217. In addition, the voice processing unit 216 acquires the voice of the user of the mobile terminal 100 or surrounding sounds from the microphone 218, processes the voice signal and outputs the processed voice signal to the communication control unit 215, or based on an instruction from the main control unit 201. Stored in the memory 2061. The GPS antenna 212 receives information for specifying the position of the mobile terminal 100 from a GPS (Global Positioning System) satellite and outputs the information to the GPS function unit 219. The GPS function unit 219 processes the data received from the GPS antenna 212, specifies the position of the mobile terminal 100, and outputs it to the main control unit 201. The main control unit 201 displays a map using the received position information, and instructs a destination in conjunction with the navigation software. The RFID reader antenna 213 receives data transmitted from an external device and outputs it to the RFID reader 220. The RFID reader 220 reads data received from the RFID reader antenna 213 and stores it in the memory 2061. The operation unit 221 is an input unit used by a user to operate the mobile terminal, and may include an input key, a sensor device such as a jog dial, or a touch panel. In the above description, various types of data such as video data and character data have been stored in the memory 2061. However, data that requires a large storage capacity, such as video data, may be stored or accumulated in the large-capacity memory 2062. .

  As described above, the video display apparatus according to the first embodiment has a function of converting video data from two-dimensional data to three-dimensional data. When the user wants to read character data, the two-dimensional data is converted into three-dimensional data. Conversion to data is not performed, or conversion from two-dimensional data to three-dimensional data is stopped. As a result, the character data is displayed two-dimensionally so that it is easy to read. In addition, this function can be linked to an operation such as rotation of a display unit of a portable device or the like, and convenience can be improved.

[Embodiment 2]
A second embodiment will be described. However, the description of the same parts as in the first embodiment, such as the configuration of the second embodiment, is omitted. In the first embodiment, when character data is displayed on the display unit, two-dimensional display is also performed without including three-dimensional display including video data, or switching from three-dimensional display to two-dimensional display including video data is performed. there were. As shown in FIG. 7, the second embodiment is an embodiment in which video data for three-dimensional display and character data for two-dimensional display are simultaneously displayed on the same display unit. In FIG. 7A, when the portable device 101 equipped with the video display device according to the second embodiment is oriented vertically, video data is displayed three-dimensionally at the upper part of the display unit, and character data is displayed two-dimensionally at the lower part. However, it may be upside down. Also, when the portable device 101 is turned sideways, for example, video data is displayed three-dimensionally on the left side of the display unit, character data is displayed two-dimensionally on the right side, video data displayed three-dimensionally and character data displayed two-dimensionally are displayed. It is possible to display simultaneously on the same display section.

  The above can be implemented by turning off the parallax barrier in the area where character data is displayed as shown in FIGS. 7B1 and 7B2. Regarding the basic operation, the parallax barrier driving by the liquid crystal device will be described with reference to FIG. Here, a display example having a three-dimensional display area and a two-dimensional display area on the left and right is shown. In this case, the vertical barrier is displayed in the horizontal direction, but is displayed so as to have a predetermined positional relationship with the display pixel as shown in FIG. In order to simplify the idea, although not shown in the figure, in order to display each barrier, matrix driving is performed with horizontal and vertical electrodes, and driving signals are applied to the electrodes in the horizontal direction (electrodes arranged on the left and right on the screen). In the applied state, the drive signal is applied only to the electrode in the portion to be displayed as a barrier to the electrode in the vertical direction (electrodes arranged vertically on the screen). That is, the portion where the drive signal is applied to both the horizontal and vertical electrodes is black as a barrier. As a result, the parallax barrier in the “parallax barrier ON” period of the “parallax barrier switching timing signal in the horizontal line direction” operates to form a barrier, and the parallax barrier in the “parallax barrier OFF” period is not formed. Become transparent. Naturally, in this case, since the video data located behind the parallax barrier is displayed three-dimensionally as shown in FIG. 6, the pixels of the right image and the left image are alternately displayed repeatedly, and the right image is displayed on the right eye of the user. The left eye is arranged so that each left image can be seen. On the other hand, when a 2D image is displayed in 3D in an area for displaying character data, here in the display area on the right side of the screen, the 2D image is displayed as it is. When the 3D video is converted to the 2D video, one of the right eye video and the left video separated by the data conversion unit 306 in FIG. 3 is used for display. Here, the “timing signal in the horizontal line direction” indicates the display range of the horizontal method in this case. In addition, the notation of the horizontal line means the direction lying on the side of the screen, and does not represent the actual drive signal of the display device.

  FIG. 7B2 shows an example in which the display screen is viewed in the vertical direction and the upper part is displayed three-dimensionally and the lower part is displayed two-dimensionally. Here, the operation in FIG. 7B1 is opposite to the horizontal and vertical driving, but the basic operation is the same. This screen performs matrix driving with horizontal and vertical electrodes, and the electrodes in the vertical direction (up and down electrodes on the screen) are applied with drive signals to the electrodes at the barrier position, and the horizontal direction (screen In the above, the drive signal is applied only to the electrode of the portion displayed as a barrier to the electrode of the electrode arranged on the left and right). That is, the portion where the drive signal is applied to both the horizontal and vertical electrodes is black as a barrier. As a result, the parallax barrier in the “parallax barrier ON” period of the “parallax barrier switching timing signal in the vertical line direction” operates to form a barrier, and the parallax barrier in the “parallax barrier OFF” period is not formed. Become transparent. Naturally, in this case, since the video data located behind the parallax barrier is displayed three-dimensionally as shown in FIG. 6, the pixels of the right image and the left image are alternately displayed repeatedly, and the right image is displayed on the right eye of the user. The left eye is arranged so that each left image can be seen.

  On the other hand, for example, when a 2D image is displayed in 3D in the lower area displaying character data, the 2D image is displayed as it is. When the 3D video is converted to the 2D video, one of the right eye video and the left video separated by the data conversion unit 306 in FIG. 3 is used for display. Here, the “timing signal in the vertical line direction” indicates the display range of the horizontal method in this case. In addition, the notation of a vertical line means a vertical direction with respect to the screen, and does not represent an actual display device drive signal.

  The present invention relates to a video display device that displays a three-dimensional video content in which a video signal and a character signal are mixed, such as terrestrial digital broadcasting, one-segment broadcasting, video script, and the like, and a television and a mobile phone equipped with this video display device It can be widely used for electronic devices such as devices, personal computers and electronic books.

DESCRIPTION OF SYMBOLS 100, 401 Portable terminal 101,221 Operation part 102 Display part 103 Speaker part 201 Main control part 202 Display control part 203 Main display part 204 Sub display part 205 TV tuner 206 Memory 207 Main camera 208 Sub camera 209 Sensor part 210 Television antenna 211 Wireless communication antenna 212 GPS antenna 213 RFID reader antenna 214 Radio unit 215 Communication control unit 216 Audio processing unit 217 Speaker 218 Microphone 219 GPS function unit 220 RFID reader 301 Content supply unit 302 Video data decoding unit 303 Character information decoding unit 304, 305 switch 306 Data Conversion Unit 1010 Enter Button 1011 Select Button 1012 Cancel Button 1020 Menu Display Area 2060 Program Memory 2061 Memory 2062 Large capacity memory

Claims (8)

A video display device capable of displaying video data and character data,
A display unit capable of displaying the video data in a two-dimensional display and a three-dimensional display;
A data conversion unit capable of converting the two-dimensional data into three-dimensional data when the video data is two-dimensional data;
A display control unit capable of controlling the display unit,
The display control unit, when not displaying the character data on the display unit, converts the two-dimensional data of the video data into the three-dimensional data by the data conversion unit, and enables the three-dimensional display on the display unit A video display device characterized by that.   When displaying the character data on the display unit, the display control unit stops displaying the three-dimensional data of the video data, and displays the two-dimensional display and the character data on the display unit. The video display device according to claim 1. The video display device according to claim 2, further comprising a sensor unit that detects an orientation of the display unit,
The mobile terminal according to claim 1, wherein the display control unit determines whether the character data can be displayed based on a direction detected by the sensor unit.   4. The portable terminal according to claim 3, wherein when the sensor unit detects that the display unit is turned sideways, the display unit performs three-dimensional display.   The mobile terminal according to claim 4, wherein the sensor unit is a gravity sensor or a geomagnetic sensor.   6. The video display device according to claim 1, wherein the video data is broadcast data.   6. The video display device according to claim 1, wherein the video data is camera data.   6. The video display apparatus according to claim 1, wherein the video data is an e-mail.