JP2015056019A - Display unit and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit that can display characters and image information on a screen in an appropriate size when the characters and image information are difficult to see.SOLUTION: According to an embodiment, the display unit comprises: a screen for displaying an image; position detection means for detecting a position of a viewer relative to the screen; and display control means for dividing the screen into a plurality of display areas, and displaying images having different magnifications according to the position of the viewer, on the plurality of display areas. The display control means displays an image having a large magnification on the display area in front of which the viewer is located at a large distance from the screen.

Description

  Embodiments described herein relate generally to a display device and a display method.

  In recent years, a display device has been devised that detects the position of the viewer with respect to the display device and automatically adjusts the display state so that the viewer can easily view the display state of the image on the display device. Has been.

JP 2003-271284 A

  The size of flat-screen TVs using display panels such as liquid crystal display panels and PDPs (Plasma Display Panels) has increased, and many flat-screen TVs of 60-inch or larger (the diagonal length of the effective visible region is 60 inches) have been commercialized. Has been. In addition, with the increase in size and higher definition, full high-definition with 1920 × 1080 pixels has become commonplace, and 4K-UHD (Ultra High Definition) display panels with 3840 × 2160 pixels are now on the market. It started to be introduced.

  A large screen and high definition have made it possible to display a large amount of character information on the screen. On the other hand, depending on the viewer, small characters may be difficult to see when viewing the screen at a position away from the screen. In such a case, the viewer must approach the screen, which is troublesome.

  An object of the present invention is to provide a display device that can be displayed in an appropriate size when it is difficult to see characters and image information on a screen. .

  In order to achieve the above object, according to the embodiment, the display device divides the screen into a plurality of display areas, a screen for displaying an image, position detecting means for detecting the position of the viewer with respect to the screen, and the screen. And display control means for displaying images having different enlargement ratios in the plurality of display areas according to the position of the viewer.

1 is an external perspective view of a display device according to an embodiment. The block diagram which showed the structure of the display apparatus which concerns on embodiment. The figure which showed an example of the positional relationship of a display apparatus and person P1, P2. The external view of the remote control concerning an embodiment. The figure which showed the example which divided | segmented the screen into four area | regions. The figure which showed another example which divided | segmented the screen into four area | regions. The figure which showed the normal display state which displayed the whole image on the whole screen. The figure which showed the example which displayed the reduction image of the whole image in the area | region A, and displayed the enlarged image in the area | region D. FIG. The figure which showed the example which displayed the reduction image of the whole image in the area | region A, and displayed the enlarged image in the area | region D. FIG. The figure which showed the example which displayed the reduction image of the whole image in the area | region A, and displayed the enlarged image in the area | region D. FIG. The figure which showed the example which displayed the reduction image of the whole image in the area | region L, and displayed the enlarged image in the area | region K. FIG. The flowchart which showed the operation | movement procedure of the enlarged display process.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is an external perspective view of a display device 1 according to the embodiment. As an embodiment of the display device 1, a digital television will be described as an example. The display device 1 receives a digital broadcast, can record and play back video data and audio data of the received broadcast program (content), and displays a video of the content on a screen. PC (Personal Computer) And a video recording / reproducing apparatus such as a portable terminal.

  The display device 1 includes a main body 2 and a stand 3 that supports the main body 2. In the main body 2, a display panel 4 such as a liquid crystal panel or a PDP (Plasma Display Panel) panel is disposed on the front side, and a frame (not shown) that supports the display panel 4 is disposed on the back side of the display panel 4. A circuit board and a power supply circuit (not shown) for driving the display panel 4 are installed on the frame.

  The main body 2 has an outer surface by a front cover 5 that covers a part of the front side, top surface, bottom surface, and both side surfaces of the main body 2 and a back cover 6 that covers a part of the back side, top surface, bottom surface, and both side surfaces of the main body 2. being surrounded. The screen 7 is a display portion inside the window portion 5 a of the front cover 5 of the display panel 4.

  The remote controller 8 is an operation device that transmits an operation signal to the operation reception unit of the display device 1 using wireless communication such as infrared or Bluetooth (registered trademark).

  A camera 9 a is provided on the upper left side of the front cover 5, and a camera 9 b is provided on the upper right side of the front cover 5. The position of the camera does not have to be the upper part, and may be installed at the center part or the lower part of the left and right sides of the front cover 5. Alternatively, an external camera that is not incorporated in the main body 2 may be used. The cameras 9 a and 9 b can take an image of a person existing on the front side of the display device 1.

  FIG. 2 is a block diagram illustrating a configuration of the display device 1 according to the embodiment. The antenna 10 is an antenna for terrestrial digital broadcast or satellite digital broadcast for receiving broadcast radio waves transmitted from the broadcast station 11. The tuner 12 selects a broadcast signal of a desired channel from broadcast signals of terrestrial digital broadcast, satellite digital broadcast, or cable television broadcast. The tuner 12 is composed of a plurality of tuner units, and can receive a plurality of broadcasts at the same time. The antenna terminal 12a is a terminal to which the antenna 10 is connected.

  The demodulator 13 demodulates corresponding to each digital broadcast modulation method. Terrestrial digital broadcasting signals are demodulated to OFDM (Orthogonal Frequency Division Multiplexing) demodulation, and satellite digital broadcasting signals are demodulated to MPEG2 (Moving Picture Experts Group phase 2) -TS (Transport Stream) by PSK (Phase Shift Keying) demodulation. And output to the decode processing module 14. The demodulator 13 demodulates the IP broadcast received from the network 30 such as the Internet via the network transmission / reception module 29.

  The decode processing module 14 has functions such as an MPEG decoder and a video / audio decoder. The decode processing module 14 sections the MPEG2-TS data transmitted from the demodulator 13 and decodes the program information data. Video ES (Packetized Elementary Stream) is converted to video ES (Elementary Stream), and audio PES is converted to audio ES to decode video data and audio data.

  The superimposition processing module 15 performs plane management of window drawing based on video data from the decoding processing module 14 and data broadcasting or GUI (Graphical User Interface) information transferred via the bus 20, and superimposes the video data. And sent to the video processing module 16.

  The video processing module 16 converts the format (number of pixels, frame frequency, scanning method) that can be displayed on the display module 17 or arbitrarily adjusts the display color, and outputs the video to the display module 17 to display the video. 7 is displayed.

  The audio processing module 18 converts the digital audio data transmitted from the decoding processing module 14 into an analog audio signal that can be reproduced by a speaker 19 or an earphone (not shown), and then outputs the analog audio signal to the speaker 19 or the earphone. Let it play.

  In the display device 1, all the operations including the reception operation described above are comprehensively controlled by the control module 21. The control module 21 is equipped with an MPU (Micro Processing Unit) 22 and controls each component connected via the bus 20.

  A RAM (Random Access Memory) 23 is a read / write memory that stores various data necessary for data processing of the control module 21, and operates as a buffer memory that stores video data, image frame information, and the like. A ROM (Read Only Memory) 24 is a read-only memory and stores a control program executed by the MPU 22.

  The flash memory 25 is a non-volatile memory that can be rewritten and does not lose data even when the power is turned off. The flash memory 25 has a function of storing various setting values related to the function and operation of the display device 1 set by the user.

  The operation receiving module 26 receives an operation signal transmitted from the operation device 27 and transfers it to the control module 21. The operation device 27 is, for example, a remote controller (remote controller) 8 using a wireless communication such as infrared or Bluetooth (registered trademark), a wired or wireless keyboard, and the like, and transmits an operation signal. The operation receiving module 26 receives an operation signal from the remote controller 8 or a keyboard.

  The camera video processing module 28 receives the shooting data of the cameras 9a and 9b and performs image processing. The image data subjected to the image processing is transmitted to the control module 21, and the control module 21 specifies the position or person of the person photographed by an authentication method such as known person authentication or face authentication.

  The cameras 9a and 9b may be still images or moving images. In the case of a still image, the cameras 9a and 9b shoot at a predetermined time interval when the image is displayed on the screen 7, for example. The predetermined time is, for example, 30 seconds or 1 minute, and can be set by the user. The camera 9a, 9b captures an image of a person existing on the front side of the display device 1 every predetermined time, and is appropriate when the characters and image information on the screen are difficult to see depending on the position of the person specified by the shooting. Now display it. In the case of a moving image, for example, the position of a person may be specified by sampling an image frame at predetermined time intervals.

  The display device 1 is connected to a network 30 such as the Internet via a network transmission / reception module 29. Accordingly, the display device 1 can perform information transmission via the network transmission / reception module 29 with devices such as the server 31 on the network 30. The network terminal 29a is a terminal to which the network 30 is connected. The connection between the network transmission / reception module 29 and the network 30 is not limited to a wired connection, and may be a wireless connection such as a wireless LAN using an IEEE 802.11 series communication method.

  In FIG. 2, the control module 21 has functions of a position detection module 32 and a display module 33. These functions are applications executed by the MPU 22 of the control module 21 and are normally stored in the ROM 24, and read and executed by the MPU 22 when used.

  Based on the image data transmitted from the camera video processing module 28, the position detection module 32 specifies the position or person of the viewer with respect to the screen 7 by an authentication method such as known person authentication or known face authentication. .

  FIG. 3 is a diagram illustrating an example of the positional relationship between the display device 1 and the persons P1 and P2. The state which looked at the display apparatus 1 and the persons P1 and P2 from the top is shown. The cameras 9a and 9b photograph the persons P1 and P2, respectively, and image processing is performed in the camera video processing module 28. The image data subjected to the image processing is transmitted to the control module 21, and the position detection module 32 of the control module 21 identifies the person or person by an authentication method such as known person authentication or face authentication. The position of the person with respect to the person screen 7 is detected.

  In FIG. 3, in the position detection module 32, the distance between the person P1 and the camera 9a is the distance K1, and the distance between the person P1 and the camera 9b is K2, so the distance between the person P1 and the screen 7 is the distance M1. Then, it is detected that the distance between the foot of the perpendicular line from the person P1 to the screen 7 and the approximate center of the screen 7 is the distance N1. Similarly, since the distance between the person P2 and the camera 9b is the distance L1, and the distance between the person P2 and the camera 9b is L2, the distance between the person P2 and the screen 7 is the distance M2, and the distance from the person P2 to the screen 7 is reached. It is detected that the distance between the leg of the perpendicular and the approximate center of the screen 7 is the distance N2.

  Further, it is detected that the person P1 is present on the left side of the normal 35 at the approximate center of the screen 7 and the person P2 is present on the right side of the normal 35. Since M2 is larger than M1, it is detected that the person at a position far from the screen 7 is P2. The position detection module 32 stores position detection data in the flash memory 25.

  1 and 2, two cameras are mounted on the upper left and right sides of the front cover 5, but when only determining the distance of a plurality of persons to the screen 7, one camera is mounted on the front cover 5. You may make it mount in center upper part or center lower part. It takes time to detect the distances of a plurality of persons with one camera.

  The display module 33 divides the screen 7 into a plurality of display areas, and based on the position data of the person detected by the position detection module 32, images having different magnifications according to the position of the viewer are displayed in the plurality of display areas. It has a function to display. Further, the display module 33 displays an image with a large enlargement ratio in a display area on the side where a viewer with a large distance from the screen is present. Details of the function of the display module 33 will be described later.

  FIG. 4 is an external view of the remote controller 8 according to the embodiment. The remote controller 8 sends an operation signal to the operation receiving module 26 of the display device 1 using wireless communication such as infrared or Bluetooth (registered trademark). The power button 40 turns the display device 1 on or off. Specifically, the button is a button for setting the display device 1 from the standby state to the operation state, or from the operation state to the standby state. The broadcast wave selection button 41 is an operation button for selecting a broadcast type.

  The channel selection button 42 is a button numbered from 1 to 12 for directly selecting a broadcast channel number. The channel advance button 43 is a button for selecting a channel number by forward or reverse feed, and is used when a channel is selected similarly to the channel select button 42. The volume adjustment button 44 is a button for adjusting the volume of the speaker when viewing content.

  The cursor button 45 is a button for moving the cursor in various information windows on the GUI (Graphical User Interface) screen displayed on the screen 7 and moving selection buttons for various items. The cursor button 45 is also called a cross button or a direction instruction button. The left cursor button 45a is a button used to move the cursor to the left. The right cursor button 45b, the upward cursor button 45c, and the downward cursor button 45d are used to move the cursor in the right direction, the upward direction, and the downward direction, respectively. The decision button 46 is used when executing a button on the screen or a position moved by the cursor buttons 45a to 45d.

  The program guide button 47 is a dedicated operation button that is operated when the program guide is displayed on the screen 7. The menu button 48 is a button that is pressed when displaying various setting menus prepared in the display device 1. The user uses the cursor button 45 to select a target setting item from among the plurality of hierarchically displayed items. The return button 49 is a button used when returning to the previous operation stage screen. The end button 50 is a button that is operated to end a series of operations.

  The auxiliary cursor button 51 is an operation button mainly used for switching the GUI screen displayed on the screen 7 such as switching of a program guide page and various lists displayed on the screen 7 and switching of a plurality of displayed tabs. It is. The auxiliary cursor button 51a is operated to select or move the left direction, 51b the right direction, 51c the up direction or the next screen, and 51d the down direction or the previous screen. Further, depending on the selected function, the cursor may be moved as an aid to the cursor button 45 or the selection buttons for various items may be moved.

  The four color buttons 52 are arranged in the order of a blue button 52a, a red button 52b, a green button 52c, and a yellow button 52d from the left. This is used when there are items on the screen 7 that are distinguished by color and display of selection by color.

  The display module 33 divides the screen 7 into a plurality of display areas when the image is displayed on the entire screen 7 and when the viewer activates the enlarged display function, and the enlargement ratio varies depending on the position of the viewer. Display images in multiple display areas.

  FIG. 5 is a diagram showing an example in which the screen 7 is divided into four areas. The upper left area is area A60, the lower left area is area B61, the upper right area is area C62, and the lower right area is area D63. In the example of FIG. 5, the area A <b> 60 is approximately a quarter (the area is 1/16) of the screen 7 and is substantially similar to the screen 7. The region D63 is approximately three-quarters of the screen 7 (9/16 of the area) and is substantially similar to the screen 7. The region B61 is 3/16 of the area of the screen 7 and is not similar to the screen 7. The region C62 is 3/16 of the area of the screen 7, and is not similar to the screen 7. Note that the size of the area A60 and the area D63 with respect to the screen 7 does not have to be 1/4 or 3/4, and may be determined as appropriate. The vertical center line 36 is a center line that intersects the normal 35 at substantially the center of the screen 7 and divides the screen 7 into two equal parts. The center line 37 in the left-right direction intersects the normal line 35 at the approximate center of the screen 7 and is a center line that divides the screen 7 into two equal parts.

  FIG. 6 is a diagram showing another example in which the screen 7 is divided into four areas. The upper region is the region E65, the left central region is the region F66, the lower region is the region F67, and the right central region is the region H68. In the example of FIG. 6, the region F <b> 66 is approximately a quarter of the screen 7 (the area is 1/16) and is substantially similar to the screen 7. The region H68 is approximately three-quarters of the screen 7 (9/16 of the area), and is almost similar to the screen 7. The region E65 is 3/16 of the area of the screen 7, and is not similar to the screen 7. The region G67 is 3/16 of the area of the screen 7 and is not similar to the screen 7. The size of the area F66 and the area H68 with respect to the screen 7 does not need to be 1/4 or 3/4, and may be determined as appropriate.

  FIG. 7 is a diagram showing a normal display state in which the entire image is displayed on the entire screen 7. The whole image is an image of the original size displayed on the entire screen 7. The entire image displayed on the screen 7 may be a still image or a moving image. 8, FIG. 9, and FIG. 10 are diagrams showing an example in which a reduced image of the entire image is displayed in the area A60 and an enlarged image is displayed in the area D63. This is a state using the division mode shown in FIG. The enlarged image displayed in the area D63 is an enlarged image of a part of the entire image. In the area B61 or C62, character information indicating the enlargement position, the enlargement ratio changing method, and the enlargement display end method is displayed. In this case, no image is displayed in the region B61 or the region C62.

  In FIG. 8, the enlargement ratio of the reduced image displayed in the area A60 with respect to the entire image is ¼. The area A60 is approximately a quarter of the screen 7 (the area is 1/16). The image displayed in the region D63 is an image in which a portion inside the enlarged position frame line 64 displayed in the region A60 is enlarged. The enlarged position frame line 64 is a frame line that is displayed in the reduced image of the entire image and indicates a portion that is enlarged and displayed in the region D63. In FIG. 8, the size of the area of the enlarged position frame 64 is a half of the area A60. In FIG. 8, the enlargement ratio of the image of the region D63 with respect to the entire image of the screen 7 shown in FIG. 7 is 1.5 times. In the region D63, a part of an image obtained by multiplying the entire image by 1.5 is displayed.

  The display of the enlarged image is executed by pressing the enlarged display button 53 of the remote controller 8. Alternatively, the menu button 48 is pressed and enlarged display is selected from a plurality of hierarchically displayed items. When the operation is to be ended, the end button 50 is pressed.

  FIG. 9 is a diagram illustrating an example of an enlarged image displayed in the region D63 when the enlarged position frame line 64 is moved. When the enlarged position frame 64 is moved from the position shown in FIG. 8 to the position shown in FIG. 9, the enlarged image displayed in the region D63 is also moved accordingly. The enlargement position frame line 64 can be moved by operating the cursor button 45 of the remote controller 8. This is convenient because the enlarged portion of the reduced image of the entire image can be seen. This function is particularly useful when viewing map information. The viewer can set the distance that the enlarged position frame line 64 moves by pressing the cursor button 45 once.

  FIG. 10 is a diagram illustrating an example of an enlarged image displayed in the region D63 when the enlargement ratio is changed. When changing the enlargement ratio of the enlarged image in the area D63, the auxiliary cursor button 51c or 51d of the remote controller 8 is pressed. Press 51c to increase the enlargement factor and 51d to decrease the enlargement factor.

  For example, when 51c is pressed in the state shown in FIG. 9, the enlarged position frame line 64 is further halved as shown in FIG. 10, which is a quarter of the area A60 (the area is 16). 1). The first position after the change is the position of the upper left portion of the enlarged position frame line 64 shown in FIG. In FIG. 10, by operating the cursor button 45 to move the enlarged position frame line 64, enlarged images of other parts can be viewed. In FIG. 10, the enlargement ratio of the enlarged image of the region D63 to the entire image of the screen 7 shown in FIG. 7 is 3 times.

  FIG. 11 is a diagram showing an example in which a reduced image of the entire image is displayed in the region L71 and an enlarged image is displayed in the region K70. The enlarged image displayed in the region K70 is an enlarged image of a part of the entire image. In the area J69 or the area M72, the character information indicating the enlargement position, the enlargement ratio changing method, and the enlargement display end method is displayed. In this case, no image is displayed in the region J69 or the region M72.

  The display module 33 displays an image with a large enlargement ratio in a display area on the side where a viewer with a large distance from the screen is present. Taking FIG. 3 as an example, the position detection module 32 detects that the person P1 exists on the left side of the normal 35 at the approximate center of the screen 7 and the person P2 exists on the right side. Detects that P2. Accordingly, the display module 33 displays a reduced image of the entire image in the area A60 and an enlarged image in the area D63 in order to display the enlarged image on the right side of the screen 7 as shown in FIG.

  When a person at a position far from the screen 7 exists on the left side of the screen 7, a reduced image of the entire image is displayed in the region L 71 in order to display an enlarged image on the left side of the screen 7 as shown in FIG. The enlarged image is displayed in the area K70. When there is only one viewer, an enlarged image is displayed on the side where the viewer exists.

  FIG. 12 is a flowchart showing the operation procedure of the enlarged display process. The enlarged display process starts when the viewer presses the enlarged display button 53 of the remote controller 8 or presses the menu button 48 to select and execute enlarged display.

  In S <b> 11, the display module 33 acquires position detection data from the flash memory 25. In S <b> 12, the display module 33 determines whether a person away from the screen 7 is on the left or right side of the screen 7. If the right person is separated, the process proceeds to S13, and if the right person is not separated, the process proceeds to S14.

  In S13, the display module 33 creates detailed screen display information with an enlarged display on the right side, and displays the enlarged image on the right side in S15. On the other hand, in S14, the display module 33 creates detailed screen display information with an enlarged display on the left side, and displays an enlarged image on the left side in S15. After the display, the process returns to S11 and loop processing is performed.

  In S20, the position detection module 32 starts a position detection process. In S <b> 21, the position detection module 32 acquires image data obtained by the camera video processing module 28 capturing a camera image and performing image processing.

  In S22, the position detection module 32 detects the position or person of the person photographed by an authentication method such as known person authentication or face authentication. In S <b> 23, the position detection module 32 stores position detection data in the flash memory 25. Further, the process returns to S21 to acquire and update the position detection data at regular intervals.

  In this way, when it is difficult for a viewer viewing at a position away from the screen 7 to see the characters and image information on the screen, it can be displayed in an appropriate size by using the enlarged display function. .

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 1 ... Display apparatus, 7 ... Screen, 8 ... Remote control, 9a, 9b ... Camera, 12 ... Tuner, 13 ... Demodulator, 14 ... Decoding processing module, 15 ... Superimposition processing module, 16 ... Video processing module, 17 ... Display module , 21 ... Control module, 22 ... MPU, 23 ... RAM, 24 ... ROM, 25 ... Flash memory, 26 ... Operation receiving module, 27 ... Operating device, 28 ... Camera image processing module, 29 ... Network transmission / reception module, 30 ... Network 31 ... Server, 32 ... Position detection module, 33 ... Display module, 35 ... Normal, 36 ... Vertical center line, 37 ... Horizontal center line, 45a, 45b, 45c, 45d ... Cursor button, 46 ... Decision button 48 ... Menu button, 50 ... End button, 51a, 51b, 51c, 51d ... Auxiliary cursor button, 53 ... Enlarge display button, 60 ... Area A, 61 ... Area B, 62 ... Area C, 63 ... Area D, 64 ... Enlarged position frame, 65 ... Area E, 66 ... Area F, 67 ... Area G, 68 ... area H, 69 ... area J, 70 ... area K, 71 ... area L, 72 ... area M.

Claims (7)

An image display screen,
Position detecting means for detecting the position of the viewer with respect to the screen;
A display device comprising: a display control unit configured to divide the screen into a plurality of display areas and display images having different enlargement ratios according to the position of the viewer in the plurality of display areas.   The display device according to claim 1, wherein the display control unit displays an image with a large enlargement ratio in the display region on a side where a viewer with a large distance from the screen is present.   The display device according to claim 1, wherein the display control unit displays a reduced image of the entire image in the display area on a side opposite to a side where a viewer with a large distance from the screen is present.   The display area on the side where a viewer having a large distance from the screen includes a display area larger than the display area on the opposite side to the side on which a viewer having a large distance from the screen is present. Display device.   The display device according to claim 3, wherein the display control unit displays an enlargement position frame line that indicates a portion to be enlarged and displayed in the reduced image of the entire image. A position detecting step for detecting the position of the viewer with respect to the screen displaying the image;
A display method comprising: a display step of dividing the screen into a plurality of display areas and displaying images having different enlargement ratios in the plurality of display areas according to the position of the viewer.   The display method according to claim 6, wherein in the display step, an image with a large enlargement ratio is displayed in the display area on a side where a viewer with a large distance from the screen is present.

Images