JP4762755B2 - Display device - Google Patents

Description

  The present invention relates to a display device that can simultaneously display different information in multiple directions on one screen. In particular, it can be applied to a liquid crystal panel, a plasma display, and an organic EL, and can be used for a display portion of a television receiver, a mobile phone, a PDA, a personal computer, a car navigation, and the like.

  In recent years, a liquid crystal display device called “dual view” that can simultaneously display different information in the left and right directions on one screen has appeared (see, for example, Patent Document 1). This dual view liquid crystal display device can display different information on the left and right by providing a parallax barrier on the front surface of the liquid crystal panel and distributing the traveling direction of light from the backlight for each pixel. Depending on the arrangement of the parallax barrier, etc., it is possible to display three or more screens or to display vertically.

  FIG. 4 shows a principle diagram of the dual view liquid crystal display device. This liquid crystal display device has a structure in which a backlight 61, a liquid crystal display panel 62 having a plurality of pixels a and b, and a parallax barrier (optical system separating element) 63 are arranged in this order. The parallax barrier 63 is a screen having a plurality of vertical translucent slits 64 separated by an opaque region, and light from the backlight 61 that has passed through the pixels a of the liquid crystal display panel 62 passes through the translucent slits 64. The light from the backlight 61 that has passed through the pixel b and reaches the viewer B side through the plurality of light-transmitting slits 64. In other words, two views (dual views) of different images displayed on the liquid crystal display panel 62 can be seen only from a prescribed region in the space by the plurality of translucent slits 64 of the parallax barrier 63. It is a thing.

In this dual view liquid crystal display device, if the same image is displayed on the pixels a and b, the same image can be seen from any direction, that is, one common image is displayed from any direction. Single view. In addition, it is possible to easily switch the image by switching the pixels a and b.
2005-284592

However, in a dual-view display device, for example, viewers in the left and right directions do not know what each other is looking at. Therefore, even if the same program or information is displayed at the same time, it may be viewed without being noticed at all. If you output sound from the speaker, you may notice that you are watching the same information (video), but you may wear headphones so that they are not interfered with each other's sound, and you may not notice at all obtain.
If you know that you are looking at the same information, you may be able to obtain a powerful sound effect by emitting sound from the speaker in single view, or if you use single view, you can process the same image processing in parallel Therefore, the burden on the apparatus can be reduced.

  In view of such circumstances, the present invention intends to provide a display device having a function of notifying when the other party is watching the same program or information.

  The present invention is the same as a display unit that can simultaneously display different information in multiple directions on one screen, and a determination unit that determines whether information displayed in a predetermined direction is the same as information displayed in another direction. In the case of information, the display device includes display control means for displaying on the display means which direction is common to the display.

The display device includes a program channel selection unit capable of selecting a program to be viewed, and the determination unit is the same as the channel of the program selected by the program channel selection unit and the channel of the program displayed in a different direction . Determine whether or not.

The display device, the program channel selection means, and selects the EPG.

  According to the present invention, in a display device capable of dual view, if the image displayed in the other direction is the same as the image to be viewed, the fact is displayed, so that the viewer views the same image on the same device. You can see that there is another viewer. Therefore, in some cases, it is possible to switch to a single view with a light device burden.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of a television device which is a display device according to the present invention.
The television device 10 includes a display unit 21 of a liquid crystal panel having a display screen with an aspect ratio of 9:16, and displays an input image. The input image is a video image such as terrestrial television broadcast, CATV, or DVD. The television broadcast is received through the antenna 30, and a signal of a predetermined channel is extracted by the U / V tuners 11 and 12, or an EPG (Electronic Program Guide) signal is extracted. A video signal from a DVD or the like is input from input terminals 13 and 14.

  The EPG signal extracted from the U / V tuners 11 and 12 is decoded by the EPG decoder 15. The video signal output from the U / V tuners 11 and 12 is decoded by the decoder 16 into an image signal and an audio signal. The signals input from the input terminals 13 and 14 are selected by the AV selector 17 and decoded by the decoder 16. The decoded audio signal is sent to the audio processing unit 18 where it is processed and output from the speaker 19 as audio. The decoded image signal is sent to the image processing unit 20 to generate a display image, and is displayed on the display unit 21 as an image.

  The operation input of this television apparatus is performed by the remote controllers 31A and 31B. When the viewers A and B who are users press the keys of the remote controllers 31A and 31B, the remote controllers 31A and 31B convert the operation instruction signals into infrared rays and emit light. The light receiving unit 23 of the television device 10 receives infrared rays, converts them into electrical signals, and sends them to the microcomputer 22 which is a control unit. The microcomputer 22 controls each unit based on the operation instruction signal.

  Here, character data or image data, which is an OSD image, a control program, or the like is stored in the ROM 25 in the memory 24 in advance. If there is an instruction to display EPG information from the remote controllers 31A and 31B, the microcomputer 22 reads an OSD image related to the EPG and displays it on the display unit 21 via the image processing unit 20.

  Here, the display unit 21 has a dual view function capable of simultaneously displaying different information in the left and right directions as described in the prior art, and a single view function for displaying one of the pieces of information. These can be switched by, for example, the view switching keys of the remote controllers 31A and 31B.

  Here, the image data displayed on the viewer A side is the first image data, and the image data displayed on the viewer B side is the second image data. The microcomputer 22 is configured to display both the first image data and the second image data in accordance with the operation of the view switching key of the remote controllers 31A and 31B, and either the first image data or the second image data. The image processing unit 20 is controlled to perform single view display. In addition, it is possible to reversely display the video that the viewer A is viewing and the video that the viewer B is viewing by operating the remote controller.

  The first image data and the second image data may be image data in television reception, or may be any image data from a source source that is a playback device that plays back video, CD, DVD, or the like.

  The display unit 21 has a structure in which a backlight 61, a liquid crystal display panel 62 having a plurality of pixels a and b, and a parallax barrier (optical system separating element) 63 are arranged in this order, and the structure shown in FIG. The detailed description is omitted.

  When the above-described dual view display is performed, for example, adjacent pixels of the liquid crystal display panel 62 may be driven according to the first image data or the second image data. In other words, adjacent pixels are driven according to different image data. It should be noted that every other pixel may be driven according to different image data, or every other pixel, such as every second or every third. Of course. In any case, it may be set according to the width of the translucent slit 64 of the parallax barrier 63.

  In the present embodiment, the case where a parallax barrier having a plurality of light-transmitting slits is used to perform dual view display is described. However, the present invention is not limited to this example, and a liquid crystal layer such as a liquid crystal display panel There may be used slit forming means in which a plurality of vertical slits are formed in accordance with the strength of the electric field applied to the liquid crystal layer. In this case, a plurality of vertical slits may appear in the case of dual view display, and a plurality of vertical slits may be deleted in the case of single view display.

  As a result, as described with reference to FIG. 4, the light that can be seen through the plurality of translucent slits 64 of the parallax barrier 63 can be seen only from a prescribed region in the space. Only the video corresponding to the image data can be viewed, and the viewer B can only view the video corresponding to the second image data. Note that the sound corresponding to each video is output from the speaker 19 and transmitted to each of the viewers A and B. For example, by making the speaker 19 have super directivity, It is possible to transmit only audio corresponding to each video to the viewers A and B. In addition, the viewer can listen to the sound using headphones instead of the speakers.

  The view switching keys of the remote controllers 31A and 31B perform either dual view display based on the first image data and second image data or single view display based on either the first image data or the second image data. To be operated. Switching between dual view display and single view display can be performed each time the view switch key is pressed. In this case, a control program that is switched every time the view switching key is pressed is stored in the storage medium of the ROM 25 of the memory 24, and the control program is read by the microcomputer 22.

  Video reversal switching keys are also provided in the remote controls 31A and 31B, and are operated when the video viewed by the viewer A and the video viewed by the viewer B are switched and displayed as described above. . The video reverse switching display can be switched every time the video reverse switching key is pressed. In this case, a control program that is switched every time the video reverse switching key is pressed may be stored in a storage medium such as the ROM 25 and the microcomputer 22 may read the control program.

  It is also possible to change the control program read by the microcomputer 22 so that the three modes of dual view display, single view display, and video reverse switching display can be selected by the view switching keys of the remote controllers 31A and 31B. It is. In other words, for example, switching between dual view display and single view display is performed according to the operation of the view switch key. When the view switch key is pressed for more than a second, for example, during dual view display, the video is displayed in reverse. Can be done. In this case, the video reverse switching key can be omitted.

  Next, the operation of the above embodiment will be described. FIG. 2 is a flowchart showing a processing procedure of dual view display, and FIG. 3 is an explanatory diagram of dual view display.

  As shown in FIG. 3A, a display image viewed from the left side of the dual-view display unit 21 is a first image 51, and a display image viewed from the right side is a second image 52. From the signal received from the antenna 30, the U / V tuner 12 decodes a signal from which a 4-channel program has been extracted by the decoder 16 and sends the decoded signal to the image processing unit 20 and the audio processing unit 18. An image is generated by the image processing unit and displayed as the second image 52 on the display unit 21. Therefore, the viewer B in the right direction toward the display unit 21 sees the 4-channel television program video as the second image 52. Then, when the viewer B instructs the remote controller 31B to display the channel, the microcomputer 22 calls the data of the character 54 “4ch” as the OSD image from the ROM 25 and reads the second image 52 via the image processing unit 20. Display in the upper right.

  Now, the viewer A on the right side of the display unit 21 sends an instruction to display the EPG 53 on the first image 51 to the television device 10 using the remote controller 31A. When receiving the instruction signal through the light receiving unit 23, the microcomputer 22 causes the U / V tuner 11 to extract the EPG signal from the signal received from the antenna 30, and causes the EPG decoder to decode it. Then, the OSD image of the program display is read from the ROM 25 from the EPG signal, the display image is generated by the image processing unit 20, and the EPG table 53 is displayed as the first image 51 of the display unit 21 (step S1).

Next, the viewer A uses the remote control 31A to select a program to be viewed from the display of the EPG 53 (step S2). At this time, the microcomputer 22 colors the display area 54 of the selected channel 55 received via the light receiving unit 23. In this case, it is sufficient that the viewer A can easily identify the selected channel, and the character and the surrounding area may be reversed in black and white, or the character may be italicized or the font may be changed.

  Next, the microcomputer 22 checks whether or not a program video of the same channel as the selected channel is displayed on the second screen 52 (step S3). In this case, what is necessary is just to detect whether it is the same channel. When the first screen 51 and the second screen 52 are on the same channel as shown in FIG. 3C, the microcomputer 22 indicates that the first screen indicates that “the screen is being viewed on the adjacent screen”. The image 55 is read from the ROM 25 and displayed on the first screen 51 by the image processing unit 20. (Step S4). If the channel selected by the viewer A is a channel different from the second screen 52, the selected image is displayed as it is on the first image 51 (step S5).

  Viewer A who has displayed the caution “You are watching on the next screen” can switch to single view and watch together if they know that Viewer B is listening to the same program. . In this way, it is possible to enjoy the powerful sound and video by switching to single view, which is light on the device, and outputting the same video sound from the speaker. In addition, the viewer A can select the video of the same channel while maintaining the dual view display.

  In this embodiment, it is determined whether or not the same image is viewed on the program channel. However, for example, it may be a distribution video from the Internet or a video from a DVD recorder. In this case, whether or not the images to be displayed are the same can be determined from the information on the image selected by the viewer and the image information selected by another viewer.

  Moreover, although the case of the left and right two screens is assumed in the above embodiment, the upper and lower two screens may be used, or three or more screens may be used. When the number of screens increases, a caution display is displayed to inform the viewer which screen (display in which direction) displays the same screen.

It is a block diagram which shows one Embodiment of the television apparatus which is a display apparatus which concerns on this invention. It is a flowchart which shows the process sequence of a dual view display. It is explanatory drawing of a dual view display. It is a principle figure which shows a dual view liquid crystal display device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Television apparatus 11, 12 U / V tuner 13, 14 Input terminal 15 EPG decoder 16 Decoder 17 AV selector 18 Audio processing part 19 Speaker 20 Image processing part 21 Display part 22 Microcomputer 23 Light receiving part 24 Memory 30 Antenna 31A, 31B Remote control 51, 52 Image 53 Table 54 Character 54 Display area 55 Selected channel 61 Backlight 62 Liquid crystal display panel 63 Parallax barrier 64 Translucent slit a

Claims (3)

Display means capable of simultaneously displaying different information in multiple directions on one screen;
Determination means for determining whether information displayed in a predetermined direction is the same as information displayed in a different direction;
A display device comprising: display control means for causing the display means to display in which direction the display is common when the information is the same. There is a program channel selection means that can select the program you want to watch,
The determination means includes a channel of the program selected by the program channel selection means,
The display device according to claim 1, wherein it is determined whether or not the channels of programs displayed in different directions are the same. The display device according to claim 2 , wherein the program channel selection means is selected by EPG.

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