CN101052444B - 具有多用户私密性的显示器 - Google Patents

具有多用户私密性的显示器 Download PDF

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CN101052444B
CN101052444B CN2005800334891A CN200580033489A CN101052444B CN 101052444 B CN101052444 B CN 101052444B CN 2005800334891 A CN2005800334891 A CN 2005800334891A CN 200580033489 A CN200580033489 A CN 200580033489A CN 101052444 B CN101052444 B CN 101052444B
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display
touch
display system
viewing area
present
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CN101052444A (zh
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蒂莫西·M·霍尔特
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3M Innovative Properties Co
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1323—Arrangements for providing a switchable viewing angle
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    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/20—Input arrangements for video game devices
    • A63F13/21—Input arrangements for video game devices characterised by their sensors, purposes or types
    • A63F13/213—Input arrangements for video game devices characterised by their sensors, purposes or types comprising photodetecting means, e.g. cameras, photodiodes or infrared cells
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/20—Input arrangements for video game devices
    • A63F13/21—Input arrangements for video game devices characterised by their sensors, purposes or types
    • A63F13/214—Input arrangements for video game devices characterised by their sensors, purposes or types for locating contacts on a surface, e.g. floor mats or touch pads
    • A63F13/2145—Input arrangements for video game devices characterised by their sensors, purposes or types for locating contacts on a surface, e.g. floor mats or touch pads the surface being also a display device, e.g. touch screens
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/80—Special adaptations for executing a specific game genre or game mode
    • A63F13/843—Special adaptations for executing a specific game genre or game mode involving concurrently two or more players on the same game device, e.g. requiring the use of a plurality of controllers or of a specific view of game data for each player
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
    • G07F17/3202—Hardware aspects of a gaming system, e.g. components, construction, architecture thereof
    • G07F17/3216—Construction aspects of a gaming system, e.g. housing, seats, ergonomic aspects
    • G07F17/322—Casino tables, e.g. tables having integrated screens, chip detection means
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/25—Output arrangements for video game devices
    • A63F13/28—Output arrangements for video game devices responding to control signals received from the game device for affecting ambient conditions, e.g. for vibrating players' seats, activating scent dispensers or affecting temperature or light
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F1/00—Card games
    • A63F2001/008—Card games adapted for being playable on a screen
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F9/00—Games not otherwise provided for
    • A63F9/24—Electric games; Games using electronic circuits not otherwise provided for
    • A63F2009/2401—Detail of input, input devices
    • A63F2009/2402—Input by manual operation
    • A63F2009/241—Touch screen
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/10—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals
    • A63F2300/1068—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals being specially adapted to detect the point of contact of the player on a surface, e.g. floor mat, touch pad
    • A63F2300/1075—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals being specially adapted to detect the point of contact of the player on a surface, e.g. floor mat, touch pad using a touch screen
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/20—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterised by details of the game platform
    • A63F2300/203—Image generating hardware
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/30—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by output arrangements for receiving control signals generated by the game device
    • A63F2300/302—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by output arrangements for receiving control signals generated by the game device specially adapted for receiving control signals not targeted to a display device or game input means, e.g. vibrating driver's seat, scent dispenser
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/80—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game specially adapted for executing a specific type of game
    • A63F2300/8088—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game specially adapted for executing a specific type of game involving concurrently several players in a non-networked game, e.g. on the same game console

Abstract

本发明提供一种显示系统，结合了触摸输入、公共观察区域、和只能从相应用户位置看到的多个指定用户区域。该系统尤其适用于期望为多个用户提供应用的环境中，所述用户可全体看到公共显示区域，同时能够看到他们自己的指定显示区域，而不能从他们的位置看到另一用户的指定显示区域。本发明的系统在用户期望能够通过触摸输入与系统交互的应用中特别有益。能够利用由本发明提供的各种益处的应用的例子包括多玩家游戏，其中，全体玩家能够看到对全体玩家共用的游戏信息，并且每个玩家能够秘密地看到针对自己的游戏信息。

Description

具有多用户私密性的显示器
技术领域
本发明涉及一种结合了显示器、触摸输入、和私密性的系统。
背景技术
电子显示器被广泛地用在生活的所有方面。尽管过去对显示器的使用主要限于诸如台式计算机和笔记本计算机之类的计算应用，但是随着处理能力变得更加可靠，这样的能力已经被集成到各种设备中。例如，现在普遍能够在多种应用中见到电子显示器，如自动出纳机、游戏机、自动导航系统、餐厅管理系统、杂货店结帐队列、气泵、信息亭、和手持数据管理器，这里只列出了一小部分。
发明内容
本发明提供一种包括显示器的显示系统，所述显示器结合了仅能够从相关的观察位置看到的多个私人视域和能够从全部观察位置看到的一个公共视域。该显示系统还结合了经过重叠在所述显示器的至少一部分上的一个或多个触板的触感输入。
附图说明
考虑到以下结合附图对本发明的各个实施例进行的详细描述来更彻底地理解本发明，其中：
图1示意性地示出了根据本发明的结合了多用户私密性的显示系统的实施例；
图2示意性地示出了沿着A-A方向截取的图1中的系统的横截面；
图3示意性地示出了图2中所示的所述横截面部分的放大的横截面；以及
图4示意性地示出了用于本发明的一些实施例中的触摸输入装置。
尽管本发明可被修改为各种变形和替换形式，但是其细节已经通过所述附图的例子示出，并且将在以下详细描述。然而，应该理解，所述描述并非意在限制对所述特定实施例的发明。相反，所述描述意在覆盖落入本发明的精神和范围内的全部变形、等同物、和替换。
具体实施方式
本发明提供一种结合了触摸输入和多个指定用户区的显示系统，所述多个指定用户区仅能够从相应的用户位置看到。本发明的系统尤其可用在以下应用中：期望使多个用户能够全体看到公共显示区，同时使所述多个用户能够看到他们自己的指定显示区，并且不能从他们的位置看到另一用户的指定显示区。本发明的系统在以下应用中是特别有益的，即，在用户期望能够经过触摸输入与系统交互时。可利用由本发明所提供的各种益处的应用的例子包括多玩家游戏，其中，全部玩家都能够看到对全部玩家公开的游戏信息，并且每一玩家均能够私密地看到针对他们自己的游戏信息。
在本发明中，多个用户可同时看到一个显示器。全部用户能够看到显示器的多个部分，并且显示器的至少一部分仅能够从所选(多个)用户位置看到，并且不能从其他位置看到。多个玩家可使用这种配备有私密观看和触摸屏输入能力的显示器来来玩诸如TexasHold’Em之类的纸牌游戏或其它扑克游戏。
可通过使用包括被描述为私密薄膜(privacy film)的那些薄膜的光控制薄膜(LCF)来从指定的观众位置私密地看到显示器的多个部分。LCF包括允许在可视范围内观看并阻止在可视范围外的光的薄膜。LCF还包括把另外显示在可视范围外的光重定向回可视范围的薄膜。LCF的例子包括微百叶(micro-louvered)薄膜、包括吸光填充材料的微结构和密纹(micro-grooved)薄膜、诸如由3M公司以VikuitiTM商标出售的各种可购买的LCF产品和私密薄膜、诸如菲涅尔透镜之类的各种光定向薄膜和透镜、转向薄膜、棱镜薄膜等。在本发明中有用的结构中，LCF可位于显示结构之上、之下、或之内，并且可被结合到触摸输入装置中。因为多种LCF把视角控制在单一方向，所以本发明对提供至少两个LCF组件是有用的，所述两个LCF组件的朝向为：使得能够水平地和垂直地提供私密性，并且使得可视中心轴能够被定向在指定观察位置。LCF和LCF结构的例子在美国专利4,553,818、4,764,410、4,812,709、5,147,716、5,254,388、5,528,319、6,120,026、和6,398,370、美国专利申请公开US 20030210535、和国际公开WO 2002099479和WO 2004036286中。
如上所述，LCF可被用来把光控制在水平角度范围内和/或垂直角度范围内，例如，围绕可视中心轴。LCF还可被用来确定可视中心轴的位置。LCF所创建的可视区域可以是扇形的或锥形的。在用户期望能够看到对可能位于他们左侧、右侧和对面的其他用户保密的信息的应用中，优选地是，控制水平和垂直视角以及视轴。
可从3M公司购买的诸如微百叶和微结构薄膜之类的私密薄膜和图像定向薄膜可位于显示器之中、之下、或之上、或显示器的指定位置，从而限制显示器或指定部分的可视角度。私密薄膜和图像重定向薄膜还可被用来把所显示的图像定向在某一方向或某一角度。图像定向薄膜通常控制显示器的视角或锥形区域。LCF可放置在显示器的各部分之上以限制该部分对若干用户之一的可视性。
使用具有玩家私密性的显示器可允许使用视频系统使得纸牌游戏自动化，所述纸牌游戏例如，当前需要亲自作发牌人以及一组游戏卡片(例如，一叠纸牌)，所述视频系统使得用户能够秘密地看到他们的游戏卡片，同时全体玩家能够看到一组公共的游戏卡片。一个例子是游戏Texas Hold’Em，其采用一组由全体玩家使用的公共纸牌，以及为每个玩家发两张面朝下的纸牌，这两张纸牌被该玩家秘密观看和知道。在本发明中，公共纸牌可被显示在全体玩家(以及观众)可见的中央区域，并且每个玩家各自的纸牌可被显示在只有位于指定观察区域的单一玩家才能看到这些纸牌的区域中。在游戏中的某一时刻，可能期望一个或多个玩家示出他们的纸牌，在此情况下，他们的纸牌被移动到显示器中对全体玩家可见的区域。
在结合了私密观察区域的显示系统中附加提供的触摸输入允许了唯一的交互模式。特别地，能测量同时被触摸点的一个触板或一组触板可以进一步添加到游戏选项中。装备有触板且具有私密和公共触摸及观察区域的显示器还扩展了玩法选择，例如，对每一玩家给予一定量的对其他玩家未披露的消息的任一游戏可从本发明受益，诸如一般的纸牌游戏，包括诸如Texas Hold’Em之类的扑克游戏、诸如ScrabbleTM、BattleshipTM、或MastermindTM之类的被转变为视频游戏的流行棋盘游戏、琐事游戏(trivia games)等。
本发明实施例的各个方面在图1-3中示出并参照图1-3被描述。应该理解，所示实施例是说明性的，而非反映所有各种预期的实施例，这可由在此提供的说明书认识到。图1示意性地示出了具有水平安装在桌14中的显示器12的视频游戏系统10。显示器12的四角的每一角均提供有LCF私密滤光组件16，如以下详细讨论所述。滤光组件16把光分别导向由箭头30、31、32、和33所指示的每一观察位置35、36、37、和38。显示在包括LCF滤光组件16的区域中的对象或信息仅由位于观察位置35、36、37、和38之一的人看到。滤光组件16控制视轴、水平视角、和垂直视角，如至少从图1和2所示。
显示器12可被插入到定制的扑克桌14以创建一个桌面游戏。显示器12可以是包括阴极射线管(CRT)、液晶显示器(LCD)、投影显示器、等离子体显示器等的任一适合的电子显示器。显示器12还可包括多个显示单元，和/或还可结合图像，或可以通过和围绕静止图形显示图像。
图1所示的游戏是Texas Hold’Em扑克游戏，其中各个玩家的纸牌可被发到他们各自的私人角落。因为该系统提供了私密性，所以每一玩家各自的纸牌可被面朝上发放。在其他实施例中，可以期望面朝下发放每一玩家各自的纸牌，并且允许玩家通过触摸触摸屏涂覆层来交替地展现和遮蔽纸牌。图1示出显示器12正在展现在TexasHold’Em游戏中排列为“flop”的纸牌20，并且在私人区域16中对各个玩家展现纸牌22、24、26、和28。如图所示，最多位于位置35、36、37、和38的四个人可以玩，尽管还可预期容纳更多玩家的实施例(例如，8个玩家，在方形桌面视频显示器上的每一角和每一边)。纸牌20处在游戏中的公共区域，从而它们可被任一玩家看到。纸牌22、24、26、和28在滤光组件16之后显示，从而它们只能分别从视点35、38、37、和36被看到。图1还示出用于观察位置36的所示的水平视角范围Φ。水平视角Φ可被选择以容纳从指定观察位置相对容易地观察，同时仍然针对其他玩家或他们的同伴的窥视提供了足够的私密性。例如，Φ可被选择为允许10°到100°的视角。
图2示意性地示出了沿着图1中的A-A方向截取的游戏桌10的横截面。图2示出从观察位置36看去并且由滤光组件16控制的垂直视角Λ、以及作为从垂直于显示器的平面的轴测量的视锥的倾斜角Θ。如同水平视角，垂直视角Λ和视锥倾斜角Θ可被选择以在指定位置容纳对用户的可视性，同时仍然针对其它用户提供私密性。在示例性实施例中，Λ可被选择在大约10°到100°的范围内，并且Θ可被选择在大约从垂线起20°到70°的范围内。
显示器12被金属内框18和塑料装饰框19环绕。包括二者均位于显示器12的上表面和内框18之间的第一LCF部件16a和第二LCF部件16b的LCF组件创建了私人观察区域。显示器12的每一角的私人观察区域均可由可从3M公司购买的微百叶VikuitiTM光控制薄膜的两个交叉层的组合形成。LCF层16b可具有倾斜角为0°大约60°的水平视锥Φ，并且LCF层16a可具有倾斜角Θ为30°的48°的垂直视锥。LCF组件16可由金属内框18和显示器12的上表面之间的压力夹持在原位。可选地，LCF组件16可层叠，或另外粘合到触摸屏40的任一表面(例如，在多层触摸屏结构的情况下的上表面、下表面、或中间表面)，或粘合到诸如显示器12的上表面之类的显示器12的适合表面。LCF组件还可层叠到诸如图形插入、光学薄膜、支撑结构之类的其它部件(未示出)之上或之中。光学粘合剂可被适当地用于把LCF组件于其它部件粘合在一起，或者用于把LCF组件的各层于彼此粘合。
图2还示出触摸屏40可被放置在显示器12之上从而允许与诸如纸牌20、22、24、26、和28之类的显示对象直接交互。尽管触摸屏40被示出覆盖整个显示区域，但是还预期可在显示器的所选区域中布置一个或多个触摸屏。例如，各个触摸屏可被放置在每一指定用户区域，从而每个用户均可访问他们自己的可独立操作的触摸屏。当使用在解决在同一触摸表面上同时进行的多个触摸输入方面有困难的触敏技术时，这是尤其有益的。针对每个用户具有分开的触摸屏可允许用户在任何时刻经由触摸屏与系统交互，而不用考虑另一用户的动作可能带来的干扰。在对整个显示区域布置单一触摸屏的情况下的实施例中，触摸屏的整个表面可进行多个触摸输入，或者触摸屏的指定部分可被指定为触摸输入区域，从而创建了活动和非活动触摸区域。可通过不在那些区域中包括触敏部件或通过电子手段来把触摸屏的各个部分制成不活动，所述电子手段通过适当地考虑或忽略从不活动区域中的触摸产生的信号来工作，例如，通过编程软件或固件实现。
现在已知的或以后开发的可与显示器结合使用的任何触摸屏技术均可被适当地用于本发明。触敏技术包括电容式、投射电容式、电阻式、红外光束式、表面声波式、力式、和振动式。在为位于大型视频显示器周围的多个用户提供的、以及在期望提供覆盖整个显示器的单一触摸输入装置的实施例中，能够在大区域上工作的触摸屏尤其适用。例如，振敏触摸输入装置可被用于如一起转让的美国专利申请USSN 10/850,324和USSN 10/850,516中所披露的大型显示器。
尽管触摸输入装置可提供方便和直观的方式来与本发明的视频系统交互，但是其它用户输入装置也可原位用于或附加用于在显示器上所露出的触摸屏。例子包括不显示(off-display)触板、膜片开关、按钮、操纵杆、拨动式开关、轨迹球等。
图3示意性地示出了图2中所示的部分的扩展的横截面。分层结构的其它细节被示出。垫片71和74被提供，所述垫片可包括诸如泡沫型弹性材料，例如编号为4790-92-20081-04S的多孔泡沫带。可使用例如3M 467MP粘合剂的任一适当的粘合剂来把垫片71粘合到框19。垫片71的底侧搁在铜带72上。铜带72粘到玻璃板41的顶面和侧面，并且粘到金属内框18。当使用了诸如图4所示的触板时，铜带72可把触摸屏部件45、46、47、和48、及49、50、51、和52以及互联线60、61、62、和63(见图4)与电磁干扰屏蔽开。垫片74可通过粘合剂73与板41粘到一起，并且还通过诸如3M 4936VHB之类的粘合剂75把垫片74与内框18粘到一起。通过压力和摩擦力把LCF薄膜16a和16b夹持在显示器12的上表面和内框18之间。
图4示意性地示出了在本发明的一些实施例中提供触摸输入时有用的振敏触板40。在国际公开WO 96/11378、WO 00/38104、WO01/48684、WO 02/01490、WO 03/005292、WO 03/067511、WO03/107261、欧洲专利EP 1240617B1、一般转让的美国专利申请USSN10/729,540、USSN 10/750,290、USSN 10/750,291、和USSN10/750,502、美国专利公开US 20030066692和US 20020135570、和美国专利5,637,829和5,717,432中披露了示例性的振敏触板。在一个实施例中，板41是具有915mm的长560mm、宽2.2mm尺寸厚的半强化矩形玻璃板。压电换能器45、46、47、和48可被用氰基丙烯酸盐胶粘到位于角的玻璃板41的底面。在此实施例中，传感器45、46、47、和48大小为10.4mm×4.5mm×1.19mm。这些传感器以它们的长轴与相邻玻璃板边缘成45°来布置，如WO 03/005292和一般转让的USSN 10/440,650所述。传感器45、46、47、和48以一般转让的USSN 10/739,471中所述的系列电阻器结构来构成。
简言之，振敏触摸输入装置通常通过检测由从振动触摸工具输入的触摸引起的触板中的振动，或者已经在该板中传播并且由所述触摸改变的振动来工作。检测到的振动可被用来确定触摸的位置。在一些变形中，压电换能器与触板连接以检测弯曲波振动。换能器拾取振动，并且产生被发送到控制器电子装置的信号。触摸该板的输入表面的动作产生能量脉冲，所述能量脉冲的带宽和幅度取决于接触材料(手指、指示笔、手套等)、板材料(玻璃、丙烯酸纤维等)、和接触强度。在触点给予的能量向着一般位于触板周边各点(诸如矩形板的角)的换能器传播，所述能量产生可被数字化的信号。控制器电子装置可对数字化的信号执行计算以确定触摸冲击的位置，或与触摸相关的其他信息(诸如触摸强度、触摸工具类型等)。振敏触摸装置还可检测由于触摸工具和板表面之间的摩擦接触而由触摸工具产生的振动，所述触摸工具穿过所述触板的输入表面进行跟踪。
因为由触摸输入所表示的振动通常包括在传播期间易受分散影响的弯曲波振动，可期望针对在输入位置和其它确定的信息中另外引起误差的分散效应来进行校正。用于针对分散效应进行校正的示例性方法在WO 01/48684中披露。
参照图4，响应于由于触摸输入导致的玻璃板41中的振动而由传感器45、46、47、和48每一个产生的信号可被FET放大器电路部件49、50、51、和52分别缓冲。例如，四条电缆60、61、62、和63可被用于从位于板41至连接器65的每一角上的传感器和部件传送信号。每条电缆具有一对双绞线。可选地，可使用到电子底座而止的印刷导电油墨痕迹来替代互联线。
图4还示出，垫片74可被放置在板41上。除了提供间隔功能之外，当触摸输入装置40被集成到视频系统中时，垫片74还提供振动阻尼功能。通常期望振敏触摸输入装置与外部振动至少部分隔离，并且/或者期望提供对触板的边缘上的振动加以吸收以降低反射。隔音材料也可被与垫片功能分开提供。示例性隔音材料可包括诸如丙烯酸泡沫带之类的各种泡沫带、诸如3M公司出售的贸易名称为3M4956和3M 5962之类的双面粘合带、聚氨酯泡沫带、诸如3M公司出售的贸易名称为3M 4314之类的单侧带等。其它合适的材料包括各种聚氨酯和硅酮、以及用于振动阻尼应用的粘弹性材料。
本发明不被考虑为局限于上述特别示例，而是应该被理解为覆盖在所附权利要求中公开陈述的本发明的全部方面。可应用于本发明的各种变形、等同处理、以及众多结构对本领域技术人员来说是明显的，本领域技术人员可通过参阅本说明书来导出本发明。

Claims (5)

1.一种显示系统，包括：
电子显示器，其能够电子显示图像，该电子显示器具有公共观察区域和多个指定私人观察区域，其中，每个私人观察区域只能从相关观察位置看到，并且所述公共观察区域可从所有观察位置看到；以及
触敏输入装置，其重叠在所述电子显示器的至少一部分上，从而为用户提供与所述显示系统的交互。
2.如权利要求1所述的显示系统，还包括位于至少一个所述私人观察区域中的光控制薄膜组件，以便控制所述电子显示器的可视性。
3.如权利要求2所述的显示系统，其中，所述光控制薄膜组件包括用来把视角控制在第一方向上的第一光控制薄膜、和用来把视角控制在与所述第一方向垂直的第二方向上的第二光控制薄膜。
4.如权利要求3所述的显示系统，其中，所述第一和第二光控制薄膜的至少一个控制由一个倾斜角确定的视轴，从垂直于所述电子显示器的线朝着相关观察位置来测量所述倾斜角。
5.如权利要求1所述的显示系统，其中，所述系统被构造为一张桌，围绕所述桌分配相关的观察位置以容纳多个用户。
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