WO2024147384A1 - Dispositif d'affichage d'image - Google Patents

Dispositif d'affichage d'image Download PDF

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Publication number
WO2024147384A1
WO2024147384A1 PCT/KR2023/000211 KR2023000211W WO2024147384A1 WO 2024147384 A1 WO2024147384 A1 WO 2024147384A1 KR 2023000211 W KR2023000211 W KR 2023000211W WO 2024147384 A1 WO2024147384 A1 WO 2024147384A1
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WO
WIPO (PCT)
Prior art keywords
display
image
signal
signal processing
processing device
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PCT/KR2023/000211
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English (en)
Korean (ko)
Inventor
박샘
박경렬
이원진
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2024147384A1 publication Critical patent/WO2024147384A1/fr

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  • the present disclosure relates to an image display device, and more specifically, to an image display device that can increase a three-dimensional effect through a plurality of displays.
  • a video display device is a device that displays images.
  • Prior Document 1 Korean Patent Publication No. 10-2022-0117687 discloses an image playback system that provides a three-dimensional effect based on holograms and objects.
  • Another problem that the present disclosure aims to solve is to provide an image display device that can provide a three-dimensional effect to various images.
  • the signal processing device may output a first image signal corresponding to a background area in the input image to the first display, and output a second image signal corresponding to the foreground area in the input image to the second display.
  • the signal processing device may output a second image signal from which the background area of the input image has been removed to the second display.
  • the second display may include a transparent organic light emitting panel, a transparent liquid crystal panel, or a transparent inorganic light emitting panel.
  • the image display device may further include a frame for arranging the first display at the first position and the second display at the second position.
  • a plurality of grooves are formed in the frame, and when the second display is coupled to the first groove, the distance from the first display is the first distance, and when the second display is coupled to the second groove, the 1 The distance from the display may be separated by a second distance.
  • the signal processing device when the distance between the first display and the second display is the first distance, the signal processing device outputs a second image signal corresponding to the foreground area or the object in the foreground area of the first size to the second display, , when the distance between the first display and the second display is a second distance smaller than the first distance, a third image signal corresponding to the foreground area of the second size or an object in the foreground area can be output to the second display.
  • the signal processing device may vary the polarization angle of the liquid crystal panel based on the size of the foreground area or the size of the object within the foreground area.
  • An image display device includes a first display, a second display spaced apart from the first display, a signal processing device for outputting a first image signal to the first display, and a second display to the second display. 2.
  • a second signal processing device that outputs an image signal, wherein the second display is disposed in front of the first display, the transparency of the second display is higher than or equal to that of the first display, and the second display is disposed in front of the first display.
  • the display displays at least part of the input image, and the second display displays another part of the input image.
  • the signal processing device outputs a first image signal corresponding to the background area in the input image to the first display
  • the second signal processing device outputs a second image signal corresponding to the foreground area in the input image to the second display.
  • the signal processing device may output a first image signal from which the foreground area of the input image has been removed to the first display.
  • a plurality of grooves are formed in the frame, and when the second display is coupled to the first groove, the distance from the first display is the first distance, and when the second display is coupled to the second groove, the 1 The distance from the display may be separated by a second distance.
  • An image display device may further include a plurality of motors and a moving device respectively connected to the motors and transmitting driving force to the second display.
  • An image display device includes a first display, a second display spaced apart from the first display, and a signal processing device that outputs image signals to the first display and the second display, respectively,
  • the second display is disposed in front of the first display, the transparency of the second display is higher than or equal to that of the first display, the first display displays at least a portion of the input image, and the second display , displays another part of the input image. Accordingly, it is possible to increase the three-dimensional effect through a plurality of displays. Furthermore, it is possible to give a three-dimensional effect to various images and create a 3D pop-up effect.
  • the signal processing device may output a first image signal corresponding to a background area in the input image to the first display, and output a second image signal corresponding to the foreground area in the input image to the second display. Accordingly, it is possible to increase the three-dimensional effect of the image through a plurality of displays.
  • the signal processing device separates the foreground area and the background area from the input image, outputs the first image signal corresponding to the background area to the first display, and outputs the second image signal corresponding to the foreground area to the second display.
  • a plurality of grooves are formed in the frame, and when the second display is coupled to the first groove, the distance from the first display is the first distance, and when the second display is coupled to the second groove, the 1 The distance from the display may be separated by a second distance. Accordingly, it is possible to adjust the spacing between the plurality of displays.
  • the signal processing device when the distance between the first display and the second display is the first distance, the signal processing device outputs a second image signal corresponding to the foreground area or the object in the foreground area of the first size to the second display, , when the distance between the first display and the second display is a second distance smaller than the first distance, a third image signal corresponding to the foreground area of the second size or an object in the foreground area can be output to the second display.
  • a third image signal corresponding to the foreground area of the second size or an object in the foreground area can be output to the second display.
  • the signal processing device outputs a first image signal corresponding to the background area in the input image to the first display
  • the second signal processing device outputs a second image signal corresponding to the foreground area in the input image to the second display.
  • FIG. 3 is an example of an internal block diagram of the signal processing device of FIG. 2.
  • an image display device 100 includes a first display 180a, a second display 180b spaced apart from the first display 180a, and a first display ( It includes a signal processing device (170 in FIG. 2) that outputs image signals to the second display 180a) and the second display 180b, respectively.
  • the second display 180b may be implemented as one of various panels.
  • the second display 180b may be one of a liquid crystal display panel (LCD panel), an organic light emitting panel (OLED panel), an inorganic light emitting panel (LED panel), etc.
  • LCD panel liquid crystal display panel
  • OLED panel organic light emitting panel
  • LED panel inorganic light emitting panel
  • the tuner unit 110 can process digital broadcasting signals or analog broadcasting signals.
  • the analog base band video or audio signal (CVBS/SIF) output from the tuner unit 110 may be directly input to the signal processing device 170.
  • the external device interface unit 130 may transmit or receive data with a connected external device (not shown), for example, the set-top box 50. To this end, the external device interface unit 130 may include an A/V input/output unit (not shown).
  • the A/V input/output unit can receive video and audio signals from an external device. Meanwhile, the wireless communication unit (not shown) can perform short-range wireless communication with other electronic devices.
  • the memory 140 may perform a function for temporarily storing video, voice, or data signals input to the external device interface unit 130. Additionally, the memory 140 can store information about a certain broadcast channel through a channel memory function such as a channel map.
  • FIG. 2 illustrates an embodiment in which the memory 140 is provided separately from the signal processing device 170, the scope of the present disclosure is not limited thereto. Memory 140 may be included in signal processing device 170.
  • the user input interface unit 150 transmits a signal input by the user to the signal processing device 170 or transmits a signal from the signal processing device 170 to the user.
  • the signal processing device 170 demultiplexes the input stream or demultiplexes the demultiplexed signals through the tuner unit 110, demodulator 120, network interface unit 135, or external device interface unit 130. Through processing, a signal for video or audio output can be generated and output.
  • the voice signal processed by the signal processing device 170 may be output as sound to the audio output unit 185. Additionally, the voice signal processed by the signal processing device 170 may be input to an external output device through the external device interface unit 130.
  • the signal processing device 170 may include a demultiplexer, an image processor, etc. That is, the signal processing device 170 can perform various signal processing and, accordingly, can be implemented in the form of a system on chip (SOC). This will be described later with reference to FIG. 3.
  • SOC system on chip
  • the signal processing device 170 can control the first display 180a and the second display 180b to display images.
  • the images displayed on the first display 180a and the second display 180b may be still images or moving images.
  • the signal processing device 170 may display a predetermined object in an image displayed on the first display 180a and the second display 180b.
  • the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.
  • EPG Electronic Program Guide
  • the signal processing device 170 may recognize the user's location based on an image captured by a photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the video display device 100 can be determined. In addition, the x-axis coordinate and y-axis coordinate within the display 180 corresponding to the user's location can be determined.
  • the second display 180b can be configured as a touch screen and used as an input device in addition to an output device.
  • the audio output unit 185 receives the audio-processed signal from the signal processing device 170 and outputs it as audio.
  • the photography unit photographs the user.
  • the photographing unit (not shown) can be implemented with one camera, but is not limited to this, and can also be implemented with a plurality of cameras. Image information captured by a photographing unit (not shown) may be input to the signal processing device 170.
  • the signal processing device 170 may detect a user's gesture based on an image captured from a photographing unit (not shown) or a signal detected from a sensor unit (not shown), or a combination thereof.
  • the power supply unit 190 may include a converter that converts alternating current power to direct current power and a dc/dc converter that converts the level of direct current power.
  • the remote control device 200 transmits user input to the user input interface unit 150.
  • the remote control device 200 may use Bluetooth, Radio Frequency (RF) communication, infrared (IR) communication, Ultra Wideband (UWB), ZigBee, etc. Additionally, the remote control device 200 may receive video, voice, or data signals output from the user input interface unit 150, and display them or output audio signals on the remote control device 200.
  • RF Radio Frequency
  • IR infrared
  • UWB Ultra Wideband
  • ZigBee ZigBee
  • FIG. 3 is an example of an internal block diagram of the signal processing device of FIG. 2.
  • the signal processing device 170 may include a demultiplexer 310, an image processor 320, a processor 330, and an audio processor 370. there is.
  • a data processing unit (not shown) may be further included.
  • the demultiplexer 310 demultiplexes the input stream. For example, when MPEG-2 TS is input, it can be demultiplexed and separated into video, voice, and data signals.
  • the stream signal input to the demultiplexer 310 may be a stream signal output from the tuner unit 110, the demodulator 120, or the external device interface unit 130.
  • the video decoder 325 can be equipped with decoders of various standards. For example, an MPEG-2, H,264 decoder, a 3D image decoder for color image and depth image, a decoder for multiple viewpoint images, etc. may be provided.
  • the scaler 335 can scale an input video signal that has been decoded by the video decoder 325, etc.
  • the scaler 335 can upscale when the size or resolution of the input video signal is small, and downscale when the size or resolution of the input video signal is large.
  • the image quality processing unit 635 may perform image quality processing on an input video signal that has been decoded by the video decoder 325, etc.
  • the image quality processor 635 performs noise removal processing on the input image signal, expands the resolution of the gray scale of the input image signal, performs image resolution improvement, or performs high dynamic range (HDR)-based signal processing.
  • the frame rate can be varied, or image quality processing corresponding to panel characteristics, especially organic light emitting panels, can be performed.
  • the OSD processing unit 340 generates an OSD signal according to user input or by itself. For example, based on a user input signal, a signal can be generated to display various information as graphics or text on the screens of the first display 180a and the second display 180b.
  • the generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, widgets, and icons. Additionally, the generated OSD signal may include 2D objects or 3D objects.
  • the OSD processing unit 340 may generate a pointer that can be displayed on the display based on the pointing signal input from the remote control device 200.
  • a pointer may be generated by a pointing signal processing device, and the OSD processing unit 240 may include such a pointing signal processing device (not shown).
  • the pointing signal processing device (not shown) to be provided separately rather than within the OSD processing unit 240.
  • the frame rate converter (FRC) 350 can convert the frame rate of the input video. Meanwhile, the frame rate conversion unit 350 is also capable of outputting the image as is without separate frame rate conversion.
  • the audio processing unit 370 in the signal processing device 170 can perform voice processing of the demultiplexed voice signal.
  • the audio processing unit 370 may be equipped with various decoders.
  • the frame rate conversion unit 350 and the formatter 360 may be provided separately in addition to the image processing unit 320.
  • FIG. 4A illustrates a case where a user moves the remote control device 200 away from the second display 180b while pressing a specific button in the remote control device 200. Accordingly, the selected area in the second display 180b corresponding to the pointer 205 may be zoomed in and displayed enlarged. Conversely, when the user moves the remote control device 200 closer to the second display 180b, the selected area in the second display 180b corresponding to the pointer 205 may be zoomed out and displayed in a reduced size. Meanwhile, when the remote control device 200 moves away from the second display 180b, the selected area may be zoomed out, and when the remote control device 200 approaches the second display 180b, the selected area may be zoomed in. .
  • Figure 4b is an internal block diagram of the remote control device of Figure 2.
  • the remote control device 200 transmits a signal containing information about the movement of the remote control device 200 to the image display device 100 through the RF module 421.
  • the remote control device 200 may receive a signal transmitted by the image display device 100 through the RF module 421. Additionally, the remote control device 200 may transmit commands for power on/off, channel change, volume change, etc. to the image display device 100 through the IR module 423, as necessary.
  • the user input unit 435 may be comprised of a keypad, button, touch pad, or touch screen.
  • the user can input commands related to the image display device 100 into the remote control device 200 by manipulating the user input unit 435. If the user input unit 435 is provided with a hard key button, the user can input a command related to the image display device 100 to the remote control device 200 through a push operation of the hard key button. If the user input unit 435 has a touch screen, the user can input commands related to the video display device 100 through the remote control device 200 by touching a soft key on the touch screen. Additionally, the user input unit 435 may be provided with various types of input means that the user can operate, such as scroll keys and jog keys, and this embodiment does not limit the scope of the present disclosure.
  • the sensor unit 440 may include a gyro sensor 441 or an acceleration sensor 443.
  • the gyro sensor 441 can sense information about the movement of the remote control device 200.
  • the gyro sensor 441 may sense information about the operation of the remote control device 200 based on the x, y, and z axes.
  • the acceleration sensor 443 can sense information about the moving speed of the remote control device 200, etc.
  • a distance measuring sensor may be further provided, thereby allowing the distance to the second display 180b to be sensed.
  • the control unit 480 controls all matters related to the control of the remote control device 200.
  • the control unit 480 sends a signal corresponding to a predetermined key operation of the user input unit 435 or a signal corresponding to the movement of the remote control device 200 sensed by the sensor unit 440 to the image display device through the wireless communication unit 425. It can be sent to (100).
  • the foreground and background separator 615 may distinguish between a foreground or object area and a background area of an input video signal.
  • the high grayscale amplification unit 851 in the second reduction unit 790 may perform the fourth grayscale conversion mode when the second grayscale conversion mode is performed in the HDR processing unit 705.
  • the HDR processing unit 705 may perform grayscale conversion processing based on the second grayscale conversion curve, not the first grayscale conversion curve.
  • the second reduction unit 790 can amplify the upper limit level of grayscale according to the grayscale conversion mode in the HDR processing unit 705. Accordingly, it is possible to increase the three-dimensional effect through a plurality of displays.
  • the luminance range of the video signal is adjusted according to the control signal received by the signal processing device 170.
  • the HDR processing unit 705 further includes an image analysis unit that determines whether the input video signal is an HDR signal or an SDR signal and generates a control signal to provide to the HDR processing unit 705, where the control signal is an HDR signal. It is adjusted only if it indicates that
  • the gray level resolution is increased based on the control signal input to the signal processing device 170.
  • the reduction unit 790 includes a high gray scale amplification unit 851 that amplifies the upper limit level of the gray scale of the input signal, and a decontour unit ( 842,844).
  • the second reduction unit 790 may include a second grayscale expansion unit 729 for second-stage grayscale expansion.
  • the image quality processing unit 635 in the signal processing device 170 of the present disclosure is characterized by performing four stages of reduction processing and four stages of image enhancement processing, as shown in FIG. 8.
  • the four-step reduction process may include two-step noise removal processing and two-step grayscale expansion processing.
  • the 4-step image enhancement process may include a 3-step image resolution enhancement process (bit resolution enhancement) and an object three-dimensional effect enhancement process.
  • the first feature of the signal processing device 170 of the present disclosure is to gradually improve image quality by applying the same or similar algorithms multiple times through multi-stage image quality processing.
  • noise removal processing is performed in multiple stages.
  • Noise removal processing at each stage may include temporal processing and spatial processing.
  • the high dynamic range (HDR) technique can express richer contrast by using a much wider range of luminance (unit nit) than existing techniques such as standard dynamic range (SDR).
  • SDR standard dynamic range
  • FIGS. 9A to 9D are diagrams referenced in explaining the operation of the video display device of FIG. 1.
  • the input video may be a broadcast video, streaming video, mirroring video, or an external input video from an external electronic device.
  • the signal processing device 170 detects the object, such as a person or object, in the input image 800 and detects the object, such as a person or object, in the central area of the input image 800.
  • the area containing the object can be detected as the foreground area.
  • the signal processing device 170 may detect an area excluding the foreground area detected within the input image 800 as a background area.
  • the signal processing device 170 separates the foreground area and the background area from the input image 800, creating a foreground image 820 including the foreground area and a background image 830 including the background area. can be separated.
  • the signal processing device 170 may remove the foreground area from the input image 800 and generate a background image 830 including a shaded shadow area (ARa) instead of the foreground area.
  • ARa shaded shadow area
  • the signal processing device 170 outputs a first image signal corresponding to the background area in the input image to the first display 180a, and outputs a second image signal corresponding to the foreground area in the input image to the second display ( 180b).
  • the signal processing device 170 outputs the first image signal corresponding to the background image 830 to the first display 180a, and outputs the second image signal corresponding to the foreground image 820 to the second display ( 180b).
  • the first image signal may be an image signal from which the foreground area of the input image 820 has been removed, as shown in the figure.
  • the second image signal may be an image signal from which the background area of the input image 820 has been removed, as shown in the figure.
  • the second display 180b is disposed in front of the first display 180a.
  • the first display 180a displays a first image signal corresponding to the background image 830 of FIG. 8A
  • the second display 180b displays a second image signal corresponding to the foreground image 820 of FIG. 8A. Displays .
  • the input image is a broadcast image
  • the three-dimensional effect of the foreground image including an object among the broadcast images can be increased.
  • the signal processing device 170 in the image display device 100 separates the foreground area and the background area in the graphic image 850.
  • the signal processing device 170 may detect an area excluding the foreground area detected within the graphic image 850 as a background area.
  • the signal processing device 170 may remove the foreground area from the graphic image 850 and generate a background image 870 including a shadow-processed shadow area (ARb) instead of the foreground area.
  • ARb shadow-processed shadow area
  • the signal processing device 170 outputs a first image signal corresponding to the background image 870 to the first display 180a, and outputs a second image signal corresponding to the foreground image 860 to the second display ( 180b).
  • the first display 180a displays a first image signal corresponding to the background image 870 of FIG. 8A
  • the second display 180b displays a second image signal corresponding to the foreground image 860 of FIG. 8A. Displays .
  • an image display device 100b includes a first display 180a, a second display 180b spaced apart from the first display 180a, and a first display ( It includes a signal processing device (170 in FIG. 2) that outputs image signals to the second display 180a) and the second display 180b, respectively, and frames FRU and FRD.
  • FIG. 12 is an example of an internal block diagram of the video display device of FIG. 11.
  • the image display device 100c of FIG. 11 includes a first display 180a, a second display 180b spaced apart from the first display 180a, and a first display 180b on the first display 180a. It includes a signal processing device 170 that outputs an image signal, and a second signal processing device 170b that outputs a second image signal to the second display 180b.
  • the signal processing device 170 may output a first image signal from which the foreground area of the input image has been removed to the first display 180a. Accordingly, it is possible to increase the three-dimensional effect through the plurality of displays 180a and 180b.
  • the second signal processing device 170b controls a plurality of motors (MTa to MTd). Accordingly, it is possible to automatically adjust the spacing between the plurality of displays 180a and 180b.
  • the second signal processing device 170b controls the plurality of motors MTa to MTd to rotate in a second direction opposite to the first direction, so that the first display 180a and the second display 180b It can be controlled so that the gap between it and the space decreases.
  • FIGS. 13A and 13B are diagrams referenced in explaining the operation of the video display device of FIG. 11.
  • the signal processing device 170 displays a second image corresponding to a foreground area of the first size or an object in the foreground area.
  • a signal can be output to the second display 180b.
  • the size of the foreground image 820 displayed in front of the background image 830 or the size of the object in the foreground image 820 can be displayed as the first size (SZa).
  • the distance between the first display 180a and the second display 180b is the second distance Db smaller than the first distance Da
  • a foreground area of the second size or an object in the foreground area is displayed.
  • the third image signal can be output to the second display 180b.
  • the size of the foreground image 820b displayed in front of the background image 830 or the size of the object in the foreground image 820b is a second size (SZb) smaller than the first size (SZa). ) can be displayed.
  • the three-dimensional effect of the foreground image can be increased. Furthermore, it is possible to create a 3D pop-up effect.

Abstract

Un dispositif d'affichage d'image selon un mode de réalisation de la présente divulgation comprend un dispositif d'affichage ayant un panneau électroluminescent organique, et un dispositif de traitement de signal pour commander le dispositif d'affichage, un second dispositif d'affichage étant disposé davantage vers l'avant qu'un premier dispositif d'affichage, la transparence du second dispositif d'affichage étant supérieure ou égale à la transparence du premier dispositif d'affichage, le premier dispositif d'affichage affichant au moins une partie de l'image d'entrée, et le second dispositif d'affichage affichant une partie différente de l'image d'entrée. Par conséquent, l'effet tridimensionnel peut être augmenté au moyen de multiples affichages.
PCT/KR2023/000211 2023-01-05 Dispositif d'affichage d'image WO2024147384A1 (fr)

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