WO2012142774A1 - 隧道同步视频显示系统 - Google Patents

隧道同步视频显示系统 Download PDF

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Publication number
WO2012142774A1
WO2012142774A1 PCT/CN2011/073411 CN2011073411W WO2012142774A1 WO 2012142774 A1 WO2012142774 A1 WO 2012142774A1 CN 2011073411 W CN2011073411 W CN 2011073411W WO 2012142774 A1 WO2012142774 A1 WO 2012142774A1
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Prior art keywords
display
synchronization
module
signal
train
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PCT/CN2011/073411
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English (en)
French (fr)
Inventor
吕民
齐万里
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北京金日恒升科技有限公司
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Publication of WO2012142774A1 publication Critical patent/WO2012142774A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00Advertising or display means not otherwise provided for
    • G09F19/22Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00Advertising or display means not otherwise provided for
    • G09F19/22Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • G09F2019/221Advertising or display means on roads, walls or similar surfaces, e.g. illuminated on tunnel walls for underground trains

Definitions

  • the present invention relates to the field of tunnel video display, and in particular to a high definition video display system that can be synchronized with train operation during subway operation.
  • the subway Due to its fast, convenient and low price, the subway has become more and more the preferred mode of transportation for people. In Beijing, for example, there are about 7 million passengers per day, while the Tokyo Metro has 8 million passengers per day. For passengers who take the subway for a long time, the journey in the subway becomes very boring because there is no entertainment. In this way, advertising or entertainment programs in the subway can not only bring relaxation to the passengers' journey, but also bring greater attention and visibility to the advertisers by means of the large traffic of the subway. Bring economic benefits.
  • an object of the present invention is to provide a tunnel synchronous video display system to solve the technical problem that the train and video display cannot be synchronized and the video quality is poor in the prior art subway operation.
  • the present invention employs the following technical solutions:
  • a tunnel synchronous video display system comprising: a power supply module, a main server for playing an image for playing, a human-computer interaction module, and a plurality of display modules arranged to display video image information in a plurality of train running tunnels, for ensuring a plurality of synchronization modules for synchronizing the train operation status and the display module display information, and a communication module for transmitting the data prepared by the main server to the display module, the synchronization module further comprising a plurality of sets between the two subway stations a speed detector, and a synchronization signal processor, the speedometers are evenly distributed in the tunnel between the two stations of the train; when it is detected that a train passes, each sends a message to the synchronization signal processor, which is synchronized After the signal processor operates, a synchronization control signal is obtained, which is sent to the display module, and the video image information is displayed according to the instruction of the synchronization signal.
  • the speed measuring device determines whether the train arrives through the laser switch, and calculates the current running speed of the train by the time difference between the signals received by the switches between the two speed measuring devices.
  • the synchronization signal processor further includes:
  • a speed measuring signal receiving unit configured to receive the switching signals of the speed measuring devices
  • a speed signal processing unit configured to calculate a current running speed of the train according to the received switch signal
  • a synchronization signal producing unit configured to calculate, according to the received speed signal, a synchronization signal for controlling display of the image information of the display module
  • a communication interface transmitting the synchronization signal to the display module, and controlling data display of the display module.
  • the speedometers start to work in accordance with the direction in which the train travels.
  • the speedometer in front of the running track stops. jobs.
  • the display module further includes: a power supply interface, configured to supply power to the display module;
  • a pre-storage unit for temporarily storing playback data prepared by the main server for playback; a synchronization signal receiving unit for receiving a synchronization signal generated by the synchronization module; and a display unit for synchronizing according to the synchronization The signal command, the corresponding information is played.
  • the display module further includes a display controller including two single-chip control units, each of which is connected to a group of LED drivers, and is provided for each The LED drivers send corresponding control signals.
  • the display unit further includes two columns of LED lights for displaying RGB color elements respectively driven by a group of LED drivers, and the two columns of LED lights are sequentially illuminated to display one frame of images. .
  • the two columns of LED lamps are vertically arranged in parallel, and the position of each LED lamp of the second column is located in the gap between the corresponding two LED lamps in the first column. on flat surface.
  • a plurality of display units are disposed between each of the two stations, and the display units sequentially display images according to the time gap of the visual persistence, and the sequentially displayed images constitute dynamic Picture.
  • the LED driver includes a serial memory, a parallel memory, and a PWM driving signal generating unit.
  • the serial memory receives the synchronous control signal in a serial manner, and after receiving the The parallel mode is stored in the parallel memory at a time, and the synchronous control signal is decomposed into communication data and control data, and a driving signal is generated in the PWM driving signal generating unit to drive the corresponding LED lamp to illuminate. Since the above technical solution is adopted, the present invention has the following advantages and positive effects compared with the prior art: First, the present invention utilizes the phenomenon of human visual persistence and the principle of television scanning through synchronous speed measurement technology. During the running of the train, the passenger and the display device outside the train have a certain rate of translation. The display LED lights sweep the visual range of the human eye in parallel, and each display device displays corresponding data information, and the human eye synthesizes the captured data into a complete image and displays them synchronously.
  • the present invention effectively improves the frame data display frequency and avoids flicker by the virtual pixel and two columns of LED lamp interlaced scanning technology.
  • the use of spatial interpolation scanning technology reduces the pixel pitch by a factor of two, ensuring a clear image when viewed at close range, and matching the corresponding LED driver to achieve high-definition images simultaneously.
  • FIG. 1 is a system architecture diagram of a tunnel synchronous video display system provided by the present invention
  • FIG. 2 is a block diagram of a module of a synchronization module in the present invention.
  • Figure 3 is a block diagram of a display module in the present invention.
  • Figure 4 is a diagram showing the structure of the display unit
  • Figure 5 is a structural view of an LED driving unit
  • Fig. 6 is a schematic diagram showing the synthesis of pixel display effects.
  • the present invention provides a tunnel synchronous video display system, including: a power supply module 10, a main server 20, an interaction module 30, a communication module 40, a display module 50, and a synchronization module 60.
  • the power supply module 10 generally refers to each power supply interface, battery, etc., and provides power to each functional module. Support, no more details.
  • the main server 20 is used to create a play image, for example, to superimpose the advertisement image that the customer needs to advertise into a GIF or other format that supports video playback, and store it.
  • the human-computer interaction module 30 can set certain parameters as a manager, and a physical medium for the system management, including a keyboard, a mouse, etc., and can adjust the display parameters of the main server 20 and the display module 50, for example, setting the display duration. Program schedule, play order, and more.
  • the display module 50 is disposed in a plurality of train running tunnels and is a medium directly used to display video image information.
  • the communication module 40 transmits the program data produced by the main server 20 to the display module 50, and provides feedback and monitoring functions, such as whether the data is successfully transmitted, the current transmission status, and the like.
  • the synchronization module 60 is a key point of the entire system, which is used to ensure that the running state of the train and the display information of the display module 50 are synchronized, for example, to ensure that the train enters the display area, starts playing, leaves the display area to stop playing, and during the playing, the train The images seen by the passengers inside are complete and synchronized with the train operation.
  • the synchronization module 60 includes a plurality of speed detectors (611, 612, 613 ... 6N) and a synchronization signal processor 600.
  • the synchronization signal processor 600 includes a hardware chip and an internal burn-in program.
  • the speed detector 611-6NN detects that there is a train passing, each of the signals is sent to the synchronization signal processor 600, and after the synchronization signal processor 600 calculates, a synchronization control signal is obtained, which is sent to the display module 50, according to the synchronization.
  • the command of the signal is used to display the video image information.
  • the speedometer 611-6NN is arranged in sequence between two subway stations.
  • the laser reflection switch is used as the measurement standard.
  • the switch is turned on or off to determine the arrival of the train.
  • the train passes the speed detector 612, a signal is sent again. Since the installation distance between the two speedometers is known, the signal time delay is known, so the speed of the train from the speedometer 611 to the speedometer 612 can be calculated, and so on. The speed of each time period in the entire tunnel is testable.
  • the speed measuring device in front of its running track stops working.
  • the speed measuring device 630 the speed measuring devices 611-629 are all closed, achieving the effect of energy saving.
  • the synchronization signal processor 600 further includes: a speed measurement signal receiving unit 601, a speed signal processing unit 602, a synchronization signal generating unit 603, and a communication interface 604.
  • the speed measuring signal receiving unit 601 is configured to receive the switching signals of the speed measuring devices, for example, which speed measuring device is already in the off state, and the obtained signal is transmitted to the speed signal processing unit 602, and the secondary unit 602 calculates according to the received switching signal.
  • the current running speed of the train after that, the synchronization signal producing unit 603 calculates a synchronization signal for controlling the display module to display image information according to the received speed signal, and the synchronization signal is a series of protocols, and each protocol is a protocol that the display module complies with.
  • the information includes whether to start playing, changing the frequency, etc.; finally, the synchronization signal is transmitted to the display module 50 through the communication interface 604, and the data display of the display module 50 is controlled.
  • the display module 50 of the present invention further includes a power supply interface 501 and a synchronization signal receiving unit 502. Pre-storage unit 503, display unit 504 and display controller 505. .
  • the power supply interface 501 supplies power to the display module 50.
  • the pre-storage unit 503 temporarily stores the playback data prepared by the main server 20 for playback.
  • the synchronization signal receiving unit 502 receives the synchronization signal generated by the synchronization module 60 and follows the common compliance. The protocol is parsed, and the display controller 505 controls the display unit 504 to perform corresponding information playback according to the instruction of the synchronization signal according to the corresponding instruction.
  • the controller 505 is shown to include two monolithic control units 5053, 5054, each connected to a group of LED drivers 5052, 5051, and each corresponding driver is sent a corresponding control signal.
  • the display unit 504 includes a plurality of LED light poles, for example, 60 are disposed in the subway tunnel at the same time, and are arranged according to a certain interval, and different images can be displayed respectively. During the running of the train, the images displayed by the different light poles are superimposed into dynamics. Image.
  • Each LED lamp post comprises two columns of LED lights 5042, 5041 which are respectively driven by a set of LED drivers 5052 and 5051 and which display RGB pigments. The two columns of LED lights are sequentially illuminated to display one frame of image.
  • each LED driver can only drive several LED particles in the corresponding column LED lamps, and each LED lamp in the second column is located in the first column corresponding to two LED lamps.
  • pixel interpolation is formed.
  • one column of LEDs displays one frame of image into two columns, and is divided into odd and even numbers to respectively scan and synthesize images.
  • the LED driver includes a serial memory, that is, an SPI interface, a led brightness adjuster of the parallel memory, and a PWM driving signal generating unit, and the serial memory receives the synchronous control signal in a serial manner, and stores the data in parallel in parallel after receiving.
  • Parallel memory decomposing the synchronization control signal into The communication data and the control data are driven by a driving signal generated by the PWM driving signal generating unit to drive the corresponding LED lamp to illuminate.
  • the display device outside the passenger and the train has a certain rate of translation, and the display LED lights sweep the visual range of the human eye in parallel, and each display device displays corresponding data information, and the human eye will synthesize the data into a complete image, and synchronize display.
  • the present invention effectively improves the frame data display frequency and avoids flicker by the virtual pixel and two columns of LED lamp interlaced scanning technology.
  • the use of spatial interpolation scanning technology reduces the pixel pitch by a factor of two, ensuring a clear image when viewed at close range, and matching the corresponding LED driver to achieve high-definition images simultaneously.

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Description

隧道同步视频显示系统 技术领域 本发明涉及隧道视频显示领域, 具体涉及一种应用在地铁运行中可与列 车运行同步的高清晰视频显示系统。
背景技术
地铁因其快速、 便捷、 价格低的优势, 越来越成为人们出行的首选交通 方式, 以北京为例, 每天大约有 700万余客流, 而东京地铁则每天有 800万 客流量。 对于长时间乘坐地铁的乘客, 在地铁内的旅途因没有娱乐设施变得 非常枯燥。 藉于此, 在地铁内投放广告或娱乐节目, 不仅能够给乘客的旅途 带来放松的目的, 也能借助于地铁的大流量, 给广告投放商, 带来更大的关 注度和知名度, 从而带来经济效益。
目前, 在运行的地铁上播放视频信息的方式主要有两种: 一种是在车厢 内设置显示屏, 像移动电视一样显示某些视频内容, 其缺点是成本高, 而且 受到移动信号的干扰较强; 另一种是在隧道内设置显示装置, 在列车运行的 过程中, 利用 LED灯投影到车窗上, 隧道的黑暗形成黑色背景, 其优点是不 受移动信号的影响, 而且显示面积大, 更新也更容易, 但是其缺点是第一很 难做到视频节目的播放和列车运行状态的同步, 第二是在近距离观看 LED视 频时颗粒较大, 像素显示粗糙, 造成视频显示清晰度较差的问题。
那么, 如何在高速运行的地铁列车中同步显示高清晰度的广告、 或者其 他视频节目信息, 成为业界亟待解决的问题。
发明内容 针对上述缺陷, 本发明的目的是提供一种隧道同步视频显示系统, 以解 决现有技术的地铁运行过程中列车与视频显示不能同步, 而且显示视频质量 较差的技术问题。 为实现上述目的, 本发明釆用了以下的技术方案:
一种隧道同步视频显示系统, 包括: 供电模块、 用于制作播放图像的主 服务器、 人机交互模块、 设置在复数个列车运行隧道中用来显示视频图像信 息的复数个显示模块, 用于保证列车运行状态和显示模块显示信息同步的复 数同步模块, 以及将所述主服务器制作好的数据传输给所述显示模块的通信 模块, 所述同步模块进一步包括复数个设置在两列地铁站之间的测速器, 以 及同步信号处理器, 该些测速器均匀分布在所述列车的两个车站之间的隧道 中; 检测到有列车经过时, 各自发送信息给所述同步信号处理器, 经同步信 号处理器运算后得出同步控制信号, 发送给所述显示模块, 按照所述同步信 号的指令进行视频图像信息的显示。
依照本发明较佳实施例所述的显示系统, 所述测速器通过激光开关测定 列车是否到来, 通过两测速器之间开关接收信号的时间差计算列车的当前运 行速度。
依照本发明较佳实施例所述的显示系统, 所述同步信号处理器进一步包 括:
测速信号接收单元, 用于接收所述些测速器的开关信号;
速度信号处理单元, 用于根据接收到的所述开关信号计算列车当前的运 行速度;
同步信号生产单元, 用于根据接收到的速度信号, 运算得出控制显示模 块显示图像信息的同步信号; 以及
通信接口, 将所述同步信号传输给所述显示模块, 控制所述显示模块的 数据显示。
依照本发明较佳实施例所述的显示系统, 所述些测速器按照列车行驶的 方向依次开始工作, 当列车最后一节通过后, 其运行轨迹前方的测速器停止 工作。
依照本发明较佳实施例所述的显示系统, 所述显示模块进一步包括: 供电接口, 用于给该显示模块供电;
预存储单元, 用于将所述主服务器制作好的播放数据暂存, 以备播放; 同步信号接收单元, 用以接收所述同步模块产生的同步信号; 以及 显示单元, 用于根据所述同步信号的指令, 进行相应的信息播放。
依照本发明较佳实施例所述的显示系统, 所述显示模块还包括一显示控 制器, 其包括两个单片控制单元, 该两个单片控制单元各连接一组 LED驱动 器, 并给每个 LED驱动器发送对应的控制信号。
依照本发明较佳实施例所述的显示系统, 所述显示单元进一步包括两列 分别由一组 LED驱动器驱动的显示 RGB色素的 LED灯,该两列 LED灯依序 点亮, 显示一帧图像。
依照本发明较佳实施例所述的显示系统,所述两列 LED灯竖向平行排列, 且第二列的每个 LED灯的位置位于第一列的对应两个 LED灯之间的间隙的平 面上。
依照本发明较佳实施例所述的显示系统, 每两个车站之间设置复数个显 示单元, 该些显示单元根据视觉暂留的时间间隙依序显示图像, 该些依序显 示的图像构成动态的画面。
依照本发明较佳实施例所述的显示系统, 所述 LED驱动器包括串行存储 器,并行存储器以及 PWM驱动信号产生单元,所述串行存储器以串行的方式 接收同步控制信号, 接收完毕后以并行方式一次存入并行存储器, 将同步控 制信号分解为通信数据和控制数据,由 PWM驱动信号产生单元内产生驱动信 号驱动相应的 LED灯点亮。 由于釆用了以上的技术方案, 使得本发明相比于现有技术, 具有如下的 优点和积极效果: 第一, 本发明通过同步测速技术, 利用人眼视觉暂留现象和电视扫描原 理, 在列车运行的过程中, 乘客与列车外的显示装置具有一定速率的平移, 显示 LED灯平行扫过人眼的视觉范围, 各个显示装置显示相应的数据信息, 人眼则会将看到的数据合成完整的图像, 同步显示。
第二、 本发明通过虚像素和两列 LED灯隔行扫描技术, 有效提高了帧数 据显示频率, 避免闪烁。 使用空间插补扫描技术, 使得像素间距成倍减小, 保证了在近距离观看时的图像具有清晰的效果, 同时配合相应的 LED驱动器, 达到同步显示高清晰图像的目的。
当然, 实施本发明内容的任何一个具体实施例, 并不一定同时达到以上 全部的技术效果。
附图说明 图 1是本发明提供的隧道同步视频显示系统的系统架构图;
图 2是本发明中的同步模块的模块框图;
图 3是本发明中的显示模块框图;
图 4是显示单元架构图;
图 5是 LED驱动单元的结构图;
图 6是像素显示效果合成示意图。
具体实施方式 以下结合附图对本发明的几个优选实施例进行详细描述, 但本发明并不 仅仅限于这些实施例。 本发明涵盖任何在本发明的精髓和范围上做的替代、 修改、 等效方法以及方案。 为了使公众对本发明有彻底的了解, 在以下本发 明优选实施例中详细说明了具体的细节, 而对本领域技术人员来说没有这些 细节的描述也可以完全理解本发明。 另外, 为了避免对本发明的实质造成不 必要的混淆, 并没有详细说明众所周知的方法、 过程、 流程、 元件和电路等。
如图 1所示, 本发明提供一种隧道同步视频显示系统, 包括: 供电模块 10、 主服务器 20、 交互模块 30、通信模块 40、显示模块 50以及同步模块 60。 其中, 供电模块 10泛指各个供电接口, 电池等等, 给各个功能模块提供电力 支撑, 不加赘述。
主服务器 20用于制作播放图像, 例如将客户需要宣传的广告图片叠加 成 GIF或其他支持视频播放的格式, 并存储起来。 人机交互模块 30作为管理 者设定某些参数, 以及对系统管理的物理媒介, 包括键盘、 鼠标等, 可以对 主服务器 20以及显示模块 50的显示参数等进行调整, 例如设定显示时长, 节目表、 播放顺序等等。
显示模块 50设置在复数个列车运行隧道中, 是直接用来显示视频图像 信息的媒介。通信模块 40, 则将主服务器 20制作的节目数据传输给显示模块 50 , 并且提供反馈、 监控的功能, 例如数据是否发送成功, 当前传输状态等 等。 同步模块 60是整个系统的关键点, 其用来保证列车运行状态和显示模块 50的显示信息同步, 具体例如保证列车进入显示区, 开始播放, 离开显示区 停止播放, 并且在播放过程中, 列车内的乘客看到的图像是完整的, 与列车 运行同步的。
如图 2所示, 同步模块 60包括多个测速器(611、 612、 613... ...6N ) 和同步信号处理器 600,同步信号处理器 600包括硬件芯片及内部烧入的程序。 测速器 611-6NN检测到有列车经过时, 各自发送信息给所述同步信号处理器 600, 经同步信号处理器 600运算后得出同步控制信号, 发送给所述显示模块 50, 按照所述同步信号的指令进行视频图像信息的显示。
测速器 611-6NN依次排列在两列地铁站之间,釆用激光反射开关作为测 定标准, 当第一列列车通过时, 阻挡测速器 611的光线, 此时开关开或者关 闭, 判定列车到来。 列车经过测速器 612 时, 再发出信号, 由于两个测速器 之间安装距离已知, 信号时间延迟已知, 因此可以计算列车从测速器 611 开 行到测速器 612之间的速度, 依次类推, 整个隧道中每个时间段的速度都处 于可测试状态。
特别是当列车最后一节通过后, 其运行轨迹前方的测速器停止工作, 例 如列车尾部经过了测速器 630时,测速器 611-629全部关闭,达到节能的效果。
同步信号处理器 600进一步包括: 测速信号接收单元 601、速度信号处理 单元 602、 同步信号产生单元 603以及通信接口 604。 其中, 测速信号接收单元 601 用于接收所述些测速器的开关信号, 例如 哪个测速器已经处于关闭状态等, 得到的信号传输给速度信号处理单元 602, 次单元 602根据接收到的开关信号计算列车当前的运行速度; 之后, 同步信 号生产单元 603根据接收到的速度信号, 运算得出控制显示模块显示图像信 息的同步信号, 同步信号是一系列协议, 各协议为显示模块共同遵守的协议, 其信息包括了是否开始播放, 更换频率等等; 最后通过通信接口 604 , 将同步 信号传输给所述显示模块 50 , 控制显示模块 50的数据显示。
同时参考图 3和图 4, 本发明中的显示模块 50进一步包括供电接口 501、 同步信号接收单元 502。、预存储单元 503、显示单元 504和显示控制器 505。 .
供电接口 501给显示模块 50供电; 预存储单元 503将主服务器 20制作 好的播放数据暂存, 以备播放; 同步信号接收单元 502, 接收同步模块 60产 生的同步信号, 并将其根据共同遵守的协议解析, 给显示控制器 505 , 根据相 应的指令控制显示单元 504根据所述同步信号的指令, 进行相应的信息播放。
请参考图 5-图 6显示控制器 505 , 其包括两个单片控制单元 5053、 5054, 各连接一组 LED驱动器 5052、 5051 , 并给每个 LED驱动器发送对应的控制 信号。
显示单元 504包括多个 LED灯柱, 例如 60个同时设置在地铁隧道内, 按照一定的间距排列, 分别可以显示不同的图像, 在列车运行过程中, 这些 不同的灯柱显示的图像叠加成动态的图像。 每个 LED灯柱包括两列分别由一 组 LED驱动器 5052和 5051驱动的显示 RGB色素的 LED灯 5042、 5041 , 该 两列 LED灯依序点亮, 显示一帧图像。
两列 LED灯 5051、 5052竖向平行排列, 每个 LED驱动器只能驱动对应 列 LED灯中的几个 LED颗粒, 第二列的每个 LED灯的位置位于第一列的对 应两个 LED灯之间的间隙的平面上, 如图 7所示, 形成像素插补, 原本一列 LED显示一帧图像变成两列显示, 分成奇数和偶数分别扫描, 合成图像。
LED驱动器包括串行存储器即 SPI接口,釆用并行存储器的 led亮度调节 器以及 PWM驱动信号产生单元,所述串行存储器以串行的方式接收同步控制 信号, 接收完毕后以并行方式一次存入并行存储器, 将同步控制信号分解为 通信数据和控制数据,由 PWM驱动信号产生单元内产生驱动信号驱动相应的 LED灯点亮。 综上所述, 本发明相比于现有技术, 具有如下的优点和积极效果: 第一, 本发明通过同步测速技术, 利用人眼视觉暂留现象和电视扫描原 理, 在列车运行的过程中, 乘客与列车外的显示装置具有一定速率的平移, 显示 LED灯平行扫过人眼的视觉范围, 各个显示装置显示相应的数据信息, 人眼则会将看到的数据合成完整的图像, 同步显示。
第二、 本发明通过虚像素和两列 LED灯隔行扫描技术, 有效提高了帧数 据显示频率, 避免闪烁。 使用空间插补扫描技术, 使得像素间距成倍减小, 保证了在近距离观看时的图像具有清晰的效果,同时配合相应的 LED驱动器, 达到同步显示高清晰图像的目的。
本发明优选实施例只是用于帮助阐述本发明。 优选实施例并没有详尽叙 述所有的细节, 也不限制该发明仅为所述的具体实施方式。 显然, 根据本说 明书的内容, 可作很多的修改和变化。 本说明书选取并具体描述这些实施例, 是为了更好地解释本发明的原理和实际应用, 从而使所属技术领域技术人员 能很好地利用本发明。 本发明仅受权利要求书及其全部范围和等效物的限制。

Claims

1、 一种隧道同步视频显示系统, 包括: 供电模块、 用于制作播放图像的 主服务器、 人机交互模块、 设置在复数个列车运行隧道中用来显示视频图像 信息的复数个显示模块, 用于保证列车运行状态和显示模块显示信息同步的 复数个同步模块, 以及将所述主服务器制作好的数据传输给所述显示模块的 通信模块, 其特征在于:
所述同步模块进一步包括复数个设置在两列地铁站之间的测速器, 以及 同步信号处理器, 该些测速器均匀分布在所述列车的两个车站之间的隧道中; 检测到有列车经过时, 各自发送信息给所述同步信号处理器, 经同步信号处 理器运算后得出同步控制信号, 发送给所述显示模块, 按照所述同步信号的 指令进行视频图像信息的显示。
2、 如权利要求 1所述的显示系统, 其特征在于, 所述测速器通过激光开 关测定列车是否到来, 通过两测速器之间开关接收信号的时间差计算列车的 当前运行速度。
3、 如权利要求 1所述的显示系统, 其特征在于, 所述同步信号处理器进 一步包括:
测速信号接收单元, 用于接收所述些测速器的开关信号;
速度信号处理单元, 用于根据接收到的所述开关信号计算列车当前的运 行速度;
同步信号生产单元, 用于根据接收到的速度信号, 运算得出控制显示模 块显示图像信息的同步信号; 以及
通信接口, 将所述同步信号传输给所述显示模块, 控制所述显示模块的 数据显示。
4、 如权利要求 1所述的显示系统, 其特征在于, 所述些测速器按照列车 行驶的方向依次开始工作, 当列车最后一节通过后, 其运行轨迹前方的测速 器停止工作。
5、 如权利要求 1所述的显示系统, 其特征在于, 所述显示模块进一步包 括: 供电接口, 用于给该显示模块供电;
预存储单元, 用于将所述主服务器制作好的播放数据暂存, 以备播放; 同步信号接收单元, 用以接收所述同步模块产生的同步信号; 以及 显示单元, 用于根据所述同步信号的指令, 进行相应的信息播放。
6、 如权利要求 5所述的显示系统, 其特征在于, 所述显示模块还包括一 显示控制器,其包括两个单片控制单元,该两个单片控制单元各连接一组 LED 驱动器, 并给每个 LED驱动器发送对应的控制信号。
7、 如权利要求 6所述的显示系统, 其特征在于, 所述显示单元进一步包 括两列分别由一组 LED驱动器驱动的显示 RGB色素的 LED灯,该两列 LED 灯依序点亮, 显示一帧图像。
8、 如权利要求 7所述的显示系统, 其特征在于, 所述两列 LED灯竖向 平行排列,且第二列的每个 LED灯的位置位于第一列的对应两个 LED灯之间 的间隙的平面上。
9、 如权利要求 5所述的显示系统, 其特征在于, 每两个车站之间设置复 数个显示单元, 该些显示单元根据视觉暂留的时间间隙依序显示图像, 该些 依序显示的图像构成动态的画面。
10、 如权利要求 6所述的显示系统, 其特征在于, 所述 LED驱动器包括 串行存储器,并行存储器以及 PWM驱动信号产生单元,所述串行存储器以串 行的方式接收同步控制信号, 接收完毕后以并行方式一次存入并行存储器, 将同步控制信号分解为通信数据和控制数据,由 PWM驱动信号产生单元内产 生驱动信号驱动相应的 LED灯点亮。
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