WO2013149485A1 - 一种图像显示系统和显示单元 - Google Patents

一种图像显示系统和显示单元 Download PDF

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Publication number
WO2013149485A1
WO2013149485A1 PCT/CN2012/086785 CN2012086785W WO2013149485A1 WO 2013149485 A1 WO2013149485 A1 WO 2013149485A1 CN 2012086785 W CN2012086785 W CN 2012086785W WO 2013149485 A1 WO2013149485 A1 WO 2013149485A1
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WIPO (PCT)
Prior art keywords
display
signal
type
image
display device
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PCT/CN2012/086785
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English (en)
French (fr)
Inventor
何建民
陈敏
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京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Publication of WO2013149485A1 publication Critical patent/WO2013149485A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/023—Display panel composed of stacked panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/14—Use of low voltage differential signaling [LVDS] for display data communication

Definitions

  • Embodiments of the present invention relate to a splicing technique of a video wall, and more particularly, to an image display system and a display unit based on an image segmentation technique and an image boundary compensation technique. Background technique
  • Method 1 using a field programmable gate array (FPGA) chip, according to the number of spliced LCD panels, develop a special image segmentation program.
  • FPGA field programmable gate array
  • TTL transistor-transistor logic
  • the analog CVBS/YPbPr signal is input to the first LCD TV, the first LCD TV outputs the same CVBS/YPbPr signal to the second LCD TV, and so on, four
  • the LCD TV gets the same analog input signal.
  • Each LCD TV captures different areas of the input signal image frame, and is image-processed after being pulled up and output to the respective LCD panel.
  • the advantage of this method is that the video wall is spliced flexibly, but the cost is slightly higher than the first way.
  • non-display area Due to the manufacturing process of the liquid crystal panel, there is usually a blank area (non-display area) of 1 to 2 cm from the display area to the panel boundary of the liquid crystal panel.
  • the width of the non-display area between the two LCD TVs Will reach 2 ⁇ 4 cm. Therefore, the above two methods have this drawback, and affect the actual display effect of the video wall. Summary of the invention
  • the technical problem to be solved by the embodiments of the present invention is to provide an image display system and a display unit, so that all the coverage areas of the display unit can display images, thereby improving the display effect of the display unit.
  • the technical solution provided by the embodiment of the present invention is as follows:
  • An image display system comprising: a display device and at least one second type display device, the second type display device covering two adjacent first Type display device non-display area at the splicing position of the device;
  • a signal processing unit configured to generate a driving signal according to the received video signal, and drive the display unit to display.
  • the signal processing unit comprises:
  • a signal distributor that receives an input of a first video signal and copies the first video signal into a plurality of second video signals and outputs the same;
  • At least two signal processing boards are configured to receive the second video signal, process the second video signal to a corresponding first type display device, and use at least one signal processing board for Receiving the second video signal, processing the second video signal, and transmitting the second video signal to a corresponding driving board;
  • the at least one driving board is configured to receive the processed second video signal, convert the signal, and send the signal to the corresponding second type display device.
  • the signal processing board processes the second video signal to capture image frames from the second video signal, separate the sub-images from the image frames, and convert the sub-images into low-voltage differentials. signal.
  • the signal processing board is further configured to separate corresponding images from the image frame according to an area covered by the corresponding first type display device or the second type display device in the display unit Sub image.
  • the first type of display device is a liquid crystal panel
  • the second type of display device is an LED display.
  • the first video signal and the second video signal are high definition multimedia interface HDMI signals.
  • the above image display system wherein:
  • the driving board converts the received low voltage differential signal processed according to the second video signal, specifically, converting the low voltage differential signal into a driving signal, and driving the corresponding LED display screen for display.
  • a display unit comprising:
  • At least two first type display devices arranged in a predetermined manner
  • At least one second type of display device the second type of display device covering two adjacent first types The non-display area at the splicing position of the display device is displayed.
  • the first type of display device is a liquid crystal panel
  • the second type of display device is an LED display.
  • the embodiment of the present invention covers two non-display areas at the splicing positions of the two first types of display devices by setting two types of display devices in the display unit, so that the display is performed.
  • the entire coverage area of the unit can display images, thereby improving the display effect and viewing of the display unit.
  • FIG. 1 is a schematic structural diagram of an image display system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of image frame segmentation according to an application example of an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of signal transmission according to an application example of an embodiment of the present invention. detailed description
  • the embodiments of the present invention provide an image display system implementation scheme based on image segmentation technology and image boundary compensation technology.
  • a first type of display device of the image display system package and at least one second type of display device, wherein the second type of display device covers a non-display area at a splicing position of two adjacent first type display devices
  • the signal processing unit is configured to generate a driving signal according to the received video signal, and drive the display unit to display.
  • the capture main image area is output to the first type display device for display, and also captures a small portion of the image area output to the two first type display device splicing
  • the second type of display device performs display, thereby eliminating the image-free area between the stitching gaps of the display unit, and improving the display effect and viewing degree of the display unit.
  • the signal processing unit may include:
  • a signal distributor that receives an input of a first video signal and copies the first video signal into a plurality of second video signal outputs
  • the second video signal is sent to a corresponding first type display device, and at least one signal processing board is configured to receive the second video signal, and process the second video signal to be sent to a corresponding Driver board;
  • the at least one driving board is configured to receive the processed second video signal, convert the image, and send the signal to the corresponding second type display device.
  • the signal processing board processes the second video signal by capturing an image frame from the second video signal, separating the sub-image from the image frame, and converting the sub-image into a low voltage differential signal. Specifically, the signal processing board separates corresponding sub-images from the image frame according to an area covered by the corresponding first type display device or the second type display device in the display unit.
  • the first type of display device may be a liquid crystal panel or an active matrix organic light emitting diode (AMOLED) panel
  • the second type of display device may be an LED display screen or the like.
  • the first type of display devices may be arranged in a matrix, for example, may be 1x2, 2x1, 2x2, 2x3, 3x2, 3x3, or the like.
  • the driving board converts the received low voltage differential signal processed according to the second video signal to convert the low voltage differential signal into a driving signal. Drive the corresponding LED display for display.
  • the first type of display device is a liquid crystal panel, and the arrangement thereof is 2x2, and the second type of display device is an LED display screen as an example to describe the embodiment of the present invention in detail.
  • an image display system may include:
  • the signal processing board 109 is connected between the signal distributor 121 and the liquid crystal panel 101, the signal processing board 111 is connected between the signal distributor 121 and the liquid crystal panel 103, and the signal processing board 113 is connected to the signal distributor 121 and the liquid crystal panel 104.
  • the signal processing board 115 is connected between the signal distributor 121 and the liquid crystal panel 102, the signal processing board 110 is connected between the signal distributor 121 and the LED driving board 117, and the signal processing board 112 is connected to the signal distributor 121 and the LED.
  • the signal processing board 114 is connected to the signal distributor 121 and the LED driving board 119.
  • the signal processing board 116 is connected between the signal distributor 121 and the LED driving board 120.
  • the output of the LED driving board 117 is connected to the LED display 107.
  • the output of the LED driving board 118 is connected to the LED display 106, and the LED driving board 119.
  • the output is connected to LED display 108, and the output of LED driver board 120 is coupled to LED display 105.
  • the signal distributor 121 receives the input of the video signal, copies the input video signal into eight video signals identical to the input video signal, and outputs them to the signal processing boards 109, 110, 111, 112, 113, 114, respectively. And 115, 116, the video signal received by the signal distributor 121 may be a high definition multimedia interface (HDMI) signal, and the 8-channel video signal outputted by the signal may also be an HDMI signal.
  • HDMI high definition multimedia interface
  • the signal processing boards 109, 111, 113, 115 each capture an image frame from the received video signal, and respectively separate upper, lower, left and right four regions from the image frame, the four regions containing most of the image frame, The four areas are respectively converted into low-voltage differential signals (LVDS) through the corresponding signal processing boards, and then output to the corresponding liquid crystal panel for display.
  • LVDS low-voltage differential signals
  • the signal processing boards 110, 112, 114, 116 each capture an image frame from the received video signal, and respectively separate the small block areas in the horizontal and vertical directions from the image frame, and the four small areas respectively pass corresponding
  • the LED driver boards 117, 118, 119, 120 convert the received low voltage differential signals into drive signals that drive the corresponding LED display for display.
  • the liquid crystal panels 101, 102, 103, 104 are the main display areas of the video wall, and the LED display screens 105, 106, 107, 108 are disposed in the non-display area of the two liquid crystal panel splicing positions, and can be performed in the non-display area.
  • the display eliminates the image-free area between the stitching gaps of the display unit, thereby improving the display effect and viewing degree of the display unit.
  • the above embodiment of the present invention introduces signal processing boards 110, 112, 114, 116, LED driving boards 117, 118, 119, 120, LED display screens 105, 106, 107 in order to eliminate the image-free area between the display unit splicing gaps. , 108, and adding 4 output signals to the signal distributor 121, which requires redesigning the conventional display unit image segmentation technology.
  • the eight video signals output from the signal distributor 121 are respectively input to eight signal processing boards 109, 110, 111, 112, 113, 114, 115, 116, and the signal processing boards respectively capture different areas of the image frame in the input video signal. And process it.
  • each signal processing board may perform image frame separation according to an area covered by the corresponding liquid crystal panel or LED display screen in the display unit.
  • FIG. 2 is a schematic diagram of image frame segmentation according to an application example of an embodiment of the present invention. As shown in FIG. 2, the input HDMI signal image frame is divided into 8 blocks by 8 signal processing boards.
  • the image blocks 201, 202, 203, 204 are the main display areas of the display unit, and the image processing boards 109, 115, 111, 113 are responsible for image frame capture, segmentation and processing, and output to the liquid crystal panels 101, 102, 103, 104. display.
  • the image blocks 205, 206, 207, 208 are located in the middle of the horizontal and vertical directions of the image frame for displaying the image display at the splicing of the unit.
  • the four blocks are responsible for image capture by the signal processing boards 116, 112, 110, 114. After being divided, the LED driver boards 120, 118, 117, 119 are converted into driving signals, and the LED displays 105, 106, 107, 108 are driven to display.
  • FIG. 3 is a schematic diagram of signal transmission according to an application example of an embodiment of the present invention.
  • the 4Kx2K HDMI signal is input to the signal distributor 121, and is converted by the signal distributor 121 to output a 4Kx2K HDMI signal identical to the input signal.
  • the 4Kx2K HDMI signal is input to the signal processing board 109, which captures the main area of the HDMI signal image frame, and outputs a 2KxlK LVDS signal or a Mini-LVDS signal to the LCD panel 101 for processing.
  • the 4Kx2K HDMI signal is also input to the signal processing board 110.
  • the signal processing board 110 captures the horizontal or vertical intermediate area of the HDMI signal image frame, and processes the output to output a specific resolution of the Mini-LVDS signal.
  • the LED driver board 117 is processed to drive the LED display 107 display.
  • the input HDMI signal image frames are separately captured and divided by the eight signal processing boards, and the liquid crystal panel and the LED display screen are driven to display, thereby eliminating the image-free area between the display unit splicing gaps. Improve the overall viewing of the display unit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Multimedia (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种图像显示系统和显示单元，所述图像显示系统包括：显示单元，所述显示单元包括至少两个按照预定方式排列的第一类型显示装置和至少一个第二类型显示装置，第二类型显示装置覆盖相邻两个第一类型显示装置拼接位置处的非显示区域；信号处理单元，用于根据接收到的视频信号产生驱动信号，驱动所述显示单元进行显示。依照这种技术方案，使得显示单元的全部覆盖区域都能够显示图像，从而提高了显示单元的显示效果。

Description

一种图像显示系统和显示单元 技术领域
本发明实施例涉及电视墙的拼接技术， 更具体地， 涉及一种基于图像分 割技术和图像边界补偿技术的图像显示系统和显示单元。 背景技术
传统的液晶电视拼接电视墙方案一般釆用两种方式： 方式一， 利用现场 可编程门阵列 （FPGA ) 芯片， 根据拼接的液晶面板数量， 开发专门的图像 分割程序。 以 2x2电视墙为例， 图像经过 FPGA芯片处理后输出 4路晶体管 -晶体管逻辑 ( TTL )视频信号， 此 4路信号分别输入到 4块图像处理板， 经 过图像缩放等处理后直接输出到液晶面板。 此方式的优点是成本较低， 但是 电视墙拼接的灵活性较差。 方式二， 以 2x2电视墙为例， 模拟 CVBS/YPbPr 信号输入到第一台液晶电视中，第一台液晶电视输出相同的 CVBS/YPbPr信 号到第二台液晶电视中，以此类推，四台液晶电视获得相同的模拟输入信号。 每台液晶电视捕捉输入信号图像帧的不同区域， 经过向上拉升等图像处理后 输出到各自的液晶面板。 此方式的优点是电视墙拼接灵活， 但是成本略高于 第一种方式。
由于液晶面板制造工艺的原因， 液晶面板显示区域到面板边界通常存在 1 ~ 2厘米的空白区域（非显示区域）， 当利用液晶电视进行电视墙拼接时， 两台液晶电视间的非显示区域宽度将达到 2 ~ 4厘米。 因此以上两种方式都 存在此弊端， 并影响电视墙实际的显示效果。 发明内容
本发明实施例所要解决的技术问题是提供一种图像显示系统和显示单 元， 使得显示单元的全部覆盖区域都能够显示图像， 从而提高显示单元的显 示效果。
为解决上述技术问题， 本发明实施例提供技术方案如下：
一种图像显示系统， 包括： 示装置和至少一个第二类型显示装置， 第二类型显示装置覆盖相邻两个第一 类型显示装置拼接位置处的非显示区域；
信号处理单元， 用于根据接收到的视频信号产生驱动信号， 驱动所述显 示单元进行显示。
上述的图像显示系统， 其中， 所述信号处理单元包括：
一信号分配器， 其接收一第一视频信号的输入， 并将所述第一视频信号 复制成多个第二视频信号并输出；
多个信号处理板， 其中至少两个信号处理板用于接收所述第二视频信 号， 将所述第二视频信号处理后发送至对应的第一类型显示装置， 以及至少 一个信号处理板用于接收所述第二视频信号，将所述第二视频信号处理后发 送至对应的驱动板；
至少一个驱动板， 用于接收处理后的第二视频信号， 进行转换后发送至 对应的第二类型显示装置。
上述的图像显示系统， 其中， 信号处理板将第二视频信号处理具体为， 从第二视频信号中捕捉图像帧， 从所述图像帧中分隔出子图像， 将所述子图 像转化为低压差分信号。
上述的图像显示系统， 其中： 信号处理板进一步用于， 根据其对应的第 一类型显示装置或第二类型显示装置在显示单元中所覆盖的区域， 来从所述 图像帧中分隔出对应的子图像。
上述的图像显示系统， 其中：
所述第一类型显示装置为液晶面板；
所述第二类型显示装置为 LED显示屏。
上述的图像显示系统， 其中：
所述第一视频信号和第二视频信号为高清晰度多媒体接口 HDMI信号。 上述图像显示系统， 其中：
驱动板对接收的根据所述第二视频信号处理后的低压差分信号进行转 换具体为， 将所述低压差分信号转换为驱动信号， 驱动对应的 LED显示屏 进行显示。
一种显示单元， 包括：
至少两个按照预定方式排列的第一类型显示装置；
至少一个第二类型显示装置， 第二类型显示装置覆盖相邻两个第一类型 显示装置拼接位置处的非显示区域。
上述的显示单元， 其中：
所述第一类型显示装置为液晶面板；
所述第二类型显示装置为 LED显示屏。
与现有技术相比， 本发明实施例通过在显示单元中设置两种类型的显示 装置， 以第二类型显示装置覆盖相邻两个第一类型显示装置拼接位置处的非 显示区域， 使得显示单元的全部覆盖区域都能够显示图像， 从而提高了显示 单元的显示效果和观赏度。 附图说明
图 1为根据本发明实施例的图像显示系统的结构示意图；
图 2为本发明实施例的一个应用实例的图像帧分割示意图；
图 3为本发明实施例的一个应用实例的信号传输示意图。 具体实施方式
针对现有技术中存在的上述缺陷， 本发明实施例提供了一种基于图像分 割技术和图像边界补偿技术的图像显示系统实现方案。 所述图像显示系统包 的第一类型显示装置、 以及至少一个第二类型显示装置， 其中， 第二类型显 示装置覆盖相邻两个第一类型显示装置的拼接位置处的非显示区域， 所述信 号处理单元用于根据接收到的视频信号产生驱动信号，驱动所述显示单元进 行显示。 所述信号处理单元在对输入信号图像帧进行捕捉时， 除捕捉主要图 像区域输出给第一类型显示装置以进行显示外， 同时也捕捉小部分图像区域 输出给两个第一类型显示装置拼接处的第二类型显示装置以进行显示，从而 消除显示单元拼接缝隙间的无图像区域，提高了显示单元的显示效果和观赏 度。
具体地， 所述信号处理单元可以包括：
一信号分配器， 其接收一第一视频信号的输入， 并将所述第一视频信号 复制成多个第二视频信号输出；
多个信号处理板， 其中至少两个信号处理板用于接收所述第二视频信 号， 将所述第二视频信号处理后发送至对应的第一类型显示装置， 以及至少 一个信号处理板用于接收所述第二视频信号，将所述第二视频信号处理后发 送至对应的驱动板；
至少一个驱动板， 用于接收所述处理后的第二视频信号， 进行转换后发 送至对应的第二类型显示装置。
所述信号处理板将第二视频信号处理具体为，从第二视频信号中捕捉图 像帧， 从所述图像帧中分隔出子图像， 将所述子图像转化为低压差分信号。 具体地， 所述信号处理板是根据其对应的第一类型显示装置或第二类型显示 装置在显示单元中所覆盖的区域， 来从所述图像帧中分隔出对应的子图像。
其中， 所述第一类型显示装置可以为液晶面板或有源矩阵有机发光二级 管 （AMOLED ) 面板等， 所述第二类型显示装置可以为 LED显示屏等。 所 述第一类型显示装置可以以矩阵方式排列， 例如， 可以为 1x2、 2x1、 2x2、 2x3、 3x2、 3x3等等。
当所述第二类型显示装置为 LED显示屏时， 所述驱动板对接收的根据 所述第二视频信号处理后的低压差分信号进行转化具体为，将所述低压差分 信号转换为驱动信号， 驱动对应的 LED显示屏进行显示。
下面以第一类型显示装置为液晶面板， 其排列方式为 2x2, 第二类型显 示装置为 LED显示屏为例， 来对本发明实施例进行详细说明。
如图 1所示， 本发明优选实施例的图像显示系统可以包括：
液晶面板 101, 102, 103, 104;
LED显示屏 105, 106, 107, 108;
信号处理板 109, 110, 111, 112, 113, 114, 115, 116;
LED驱动板 117, 118, 119, 120; 以及
信号分配器 121。
其中， 信号处理板 109连接在信号分配器 121与液晶面板 101之间， 信 号处理板 111连接在信号分配器 121与液晶面板 103之间， 信号处理板 113 连接在信号分配器 121与液晶面板 104之间， 信号处理板 115连接在信号分 配器 121与液晶面板 102之间， 信号处理板 110连接在信号分配器 121与 LED驱动板 117之间， 信号处理板 112连接在信号分配器 121与 LED驱动 板 118之间， 信号处理板 114连接在信号分配器 121与 LED驱动板 119之 间， 信号处理板 116连接在信号分配器 121与 LED驱动板 120之间， LED 驱动板 117的输出连接至 LED显示屏 107, LED驱动板 118的输出连接至 LED显示屏 106, LED驱动板 119的输出连接至 LED显示屏 108, LED驱 动板 120的输出连接至 LED显示屏 105。
信号分配器 121接收视频信号的输入， 将输入的视频信号复制为 8路与 输入的视频信号完全相同的视频信号并输出， 并分别输出到信号处理板 109, 110, 111, 112, 113, 114, 115, 116,所述信号分配器 121接收的视频信号可以为 高清晰度多媒体接口 （HDMI )信号， 并且其输出的 8路视频信号也可以为 HDMI信号。 信号处理板 109, 111, 113, 115各自从接收到的视频信号中捕捉 图像帧， 并分别从图像帧中分隔出上下左右四块区域， 此四块区域包含了图 像帧的大部分区域， 此四块区域分别经过对应的信号处理板转换为低压差分 信号 （LVDS )后， 输出到相应的液晶面板进行显示。
信号处理板 110, 112, 114, 116各自从接收到的视频信号中捕捉图像帧， 并分别从图像帧中分隔出水平和垂直方向中间部分的小块区域， 这四小块区 域分别经过对应的信号处理板转换为低压差分信号后， 输出到相应的 LED 驱动板进行处理。 LED驱动板 117, 118, 119, 120将接收到的低压差分信号转 换为驱动信号， 驱动相应的 LED显示屏进行显示。 液晶面板 101, 102, 103, 104为电视墙的主要显示区域， LED显示屏 105, 106, 107, 108被安置于两个 液晶面板拼接位置处的非显示区域， 能够在所述非显示区域进行显示， 从而 了消除显示单元拼接缝隙间的无图像区域，提高了显示单元的显示效果和观 赏度。
本发明的上述实施例为了消除显示单元拼接缝隙间的无图像区域， 引入 了信号处理板 110, 112, 114, 116、 LED驱动板 117, 118, 119, 120、 LED显示 屏 105, 106, 107, 108, 以及对信号分配器 121多增加了 4路输出信号， 这就 需要对常规的显示单元图像分割技术进行重新设计。从信号分配器 121输出 的 8路视频信号分别被输入到 8块信号处理板 109, 110, 111, 112, 113, 114, 115,116 中， 信号处理板分别捕捉输入的视频信号中图像帧的不同区域并进 行处理。 信号处理板在进行输入图像的捕捉时， 可以将输入图像的水平方向 和垂直方向都分割为 10000等分， 这完全满足目前 4Kx2K的输入信号要求， 对低分辨率的输入信号也能达到很好的图像分割精度。 在本发明实施例中， 各信号处理板可以根据其对应的液晶面板或 LED 显示屏在显示单元中所覆盖的区域， 来进行图像帧的分隔。 图 2为本发明实 施例的一个应用实例的图像帧分割示意图。如图 2所示， 输入的 HDMI信号 图像帧被 8个信号处理板分割为 8个区块。 图像区块 201, 202, 203, 204为显 示单元的主要显示区域， 由信号处理板 109, 115, 111, 113负责图像帧捕捉、 分割和处理， 并输出到液晶面板 101, 102, 103, 104显示。 图像区块 205, 206, 207, 208位于图像帧的水平和垂直方向的中间区域， 用于显示单元拼接处的 图像显示， 此 4块区域由信号处理板 116, 112, 110, 114负责图像捕捉、 分割 和处理， 并由 LED驱动板 120, 118, 117, 119转换为驱动信号后， 驱动 LED 显示屏 105, 106, 107, 108进行显示。
图 3为本发明实施例的一个应用实例的信号传输示意图。 如图 3所示， 4Kx2K的 HDMI信号被输入到信号分配器 121 ,经过信号分配器 121转换后 输出与输入信号完全相同的 4Kx2K HDMI信号。 4Kx2K的 HDMI信号被输 入到信号处理板 109,此信号处理板 109捕捉 HDMI信号图像帧的主要区域， 经过处理后输出 2KxlK的 LVDS信号或 Mini-LVDS信号到液晶面板 101进 行显示。 4Kx2K的 HDMI信号同时也被输入到信号处理板 110, 此信号处理 板 110捕捉 HDMI信号图像帧的水平或垂直方向的中间区域，经过处理后输 出特定分辨率的 Mini-LVDS信号， 此信号再经过 LED驱动板 117处理后驱 动 LED显示屏 107显示。
由此，本发明实施例通过 8个信号处理板对输入的 HDMI信号图像帧分 别进行捕捉和分割处理， 并驱动液晶面板和 LED显示屏显示， 从而消除了 显示单元拼接缝隙间的无图像区域， 提高了显示单元的整体观赏效果。
最后应当说明的是， 以上实施例仅用以说明本发明的技术方案而非限 制， 本领域的普通技术人员应当理解， 可以对本发明的技术方案进行修改或 者等同替换， 而不脱离本发明技术方案的精神范围， 其均应涵盖在本发明的 权利要求范围当中。

Claims

权利要求书
1. 一种图像显示系统， 包括： 示装置和至少一个第二类型显示装置， 第二类型显示装置覆盖相邻两个第一 类型显示装置拼接位置处的非显示区域；
信号处理单元， 用于根据接收到的视频信号产生驱动信号， 驱动所述显 示单元进行显示。
2. 如权利要求 1所述的图像显示系统， 其中， 所述信号处理单元包括： 一信号分配器， 其接收一第一视频信号的输入， 并将所述第一视频信号 复制成多个第二视频信号并输出；
多个信号处理板， 其中至少两个信号处理板用于接收所述第二视频信 号， 将所述第二视频信号处理后发送至对应的第一类型显示装置， 以及至少 一个信号处理板用于接收所述第二视频信号，将所述第二视频信号处理后发 送至对应的驱动板；
至少一个驱动板， 用于接收处理后的第二视频信号， 进行转换后发送至 对应的第二类型显示装置。
3. 根据权利要求 2所述的图像显示系统，其中，信号处理板将第二视频 信号处理具体为， 从第二视频信号中捕捉图像帧， 从所述图像帧中分隔出子 图像， 将所述子图像转化为低压差分信号。
4. 如权利要求 3所述的图像显示系统， 其中：
信号处理板进一步用于，根据其对应的第一类型显示装置或第二类型显 示装置在显示单元中所覆盖的区域， 来从所述图像帧中分隔出对应的子图 像。
5. 如权利要求 3或 4所述的图像显示系统， 其中：
所述第一类型显示装置为液晶面板；
所述第二类型显示装置为 LED显示屏。
6. 如权利要求 5所述的图像显示系统， 其中：
所述第一视频信号和第二视频信号为高清晰度多媒体接口 HDMI信号。
7. 如权利要求 5所述图像显示系统， 其中： 驱动板对接收的根据所述第二视频信号处理后的低压差分信号进行转 换具体为， 将所述低压差分信号转换为驱动信号， 驱动对应的 LED显示屏 进行显示。
8. 一种显示单元， 包括：
至少两个按照预定方式排列的第一类型显示装置；
至少一个第二类型显示装置， 第二类型显示装置覆盖相邻两个第一类型 显示装置拼接位置处的非显示区域。
9. 如权利要求 8所述的显示单元， 其中：
所述第一类型显示装置为液晶面板；
所述第二类型显示装置为 LED显示屏。
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