WO2008021857A2 - Procédé et système pour des applications à visualisation multicanaux - Google Patents

Procédé et système pour des applications à visualisation multicanaux Download PDF

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Publication number
WO2008021857A2
WO2008021857A2 PCT/US2007/075431 US2007075431W WO2008021857A2 WO 2008021857 A2 WO2008021857 A2 WO 2008021857A2 US 2007075431 W US2007075431 W US 2007075431W WO 2008021857 A2 WO2008021857 A2 WO 2008021857A2
Authority
WO
WIPO (PCT)
Prior art keywords
display
eyewear
image
operable
display system
Prior art date
Application number
PCT/US2007/075431
Other languages
English (en)
Other versions
WO2008021857A3 (fr
Inventor
Jason M. Neidrich
Matthew G. Hine
Lisa A. Wesneski
Original Assignee
Texas Instruments Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/648,424 external-priority patent/US7808449B2/en
Application filed by Texas Instruments Incorporated filed Critical Texas Instruments Incorporated
Publication of WO2008021857A2 publication Critical patent/WO2008021857A2/fr
Publication of WO2008021857A3 publication Critical patent/WO2008021857A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/349—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking
    • H04N13/354—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying sequentially
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/366—Image reproducers using viewer tracking
    • H04N13/368—Image reproducers using viewer tracking for two or more viewers

Definitions

  • This disclosure relates in general to display systems and, in particular, to display systems having selective viewing of multi-channel outputs.
  • a display technique known as split screen allows the simultaneous presentation of
  • split screen display typically consists of two to four non-movable adjacent viewing areas that simultaneously display viewing content.
  • Video game applications commonly use split screen displays to allow multi-player gaming using a common viewing screen.
  • split screen displays are limited for a variety of reasons.
  • an apparatus for use with a display system includes a plurality of eyewear devices and a processor communicatively coupled to each of the plurality of eyewear devices.
  • the processor is operable to provide a signal to each eyewear device that directs the eyewear device to allow a wearer of the eyewear device to view a display during a particular time period, but not view the display during all other time periods. In this manner, a plurality of users of the plurality of eyewear devices may view different images on a same display device generally concurrently.
  • a method for allowing sharing of a display by a plurality of users wishing to view a plurality of respective images includes displaying the plurality of respective images sequentially on the display. The method further includes selectively allowing the respective image to be viewed by the respective user, but not by any other of the plurality of users.
  • FIG. 1 is a block diagram of a portion of an example multi-channel display system according to the teachings of one embodiment of the present disclosure.
  • FIGS. 2A and 2B are block diagrams of a portion of an example private display system according to the teachings of an alternative embodiment of the present disclosure.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS In accordance with the teachings of this disclosure, a method and system for rendering plural channels on a common display are provided.
  • Various embodiments may privatize the perceptibility of a particular channel to one or more viewers. Some embodiments may effect this privatization by synchronizing the operation of eyewear with the display of the particular channel.
  • Particular examples specified throughout this document are intended for example purposes only, and are not intended to limit the scope of the present disclosure.
  • FIG. 1 is a block diagram of an example multi-channel display system 100 according to the teachings of one embodiment of the present disclosure.
  • system 100 is generally capable of controlling the perceptibility of plural full-resolution channels displayed in rapid sequence on a common display 102.
  • a cradle 106 synchronizes the operation of a set of eyewear 104 with the channels presented on display 102.
  • system 100 may enable applications such as multi-player gaming by providing each player with a unique, full-resolution, and private viewing perspective using a display 102 common to all players.
  • Display 102 generally refers to any suitable display surface, such as, for example, a television screen, a computer screen, a projector screen, or a wall.
  • display 102 is capable of receiving the optical rendering of plural full- resolution channels.
  • system 100 may support any of a variety of full- resolutions rendered on display 102.
  • system 100 may support 640x480p (PC gaming), 800x600p (PC gaming), 1280x720p (PC, Broadcast), 1024x768p (PC Gaming), 1280x800p (PC Gaming), 1280xl024p (PC Gaming), 1400X900p (iMac Gaming), 1600xl200p (PC Gaming), 1680xl050p (iMac Gaming), 1920xl080p (PC Broadcast) etc.
  • the channels of a particular multi-player video game may provide four unique, full-resolution viewing perspectives to respective players.
  • These viewing perspectives may be communicated to display 102 in repeating sequential order using time-division multiplexing. That is, the time domain may be divided into several recurrent timeslots of fixed length, one timeslot for each channel. In this manner, display 102 presents only one of the viewing perspectives at any given point in time. If the timeslots are sufficiently rapid, a non-player observer may not be able to distinguish any one particular channel or viewing perspective presented on display 102 without wearing corresponding eyewear 104.
  • Eyewear 104 generally refers to any device operable to control channel perceptibility.
  • the time-sequenced selectivity of eyewear 104 may be effected by any of variety of means.
  • eyewear 104 may each include liquid crystal lenses 108 that pass light from display 102 in synchronization with a respective channel.
  • eyewear 104a may pass light to a first viewer's eyes while display 102 presents the first viewer's channel.
  • eyewear 104b, 104c, and 104d may block the light from display 102. If the sequenced timeslots are sufficiently rapid, each viewer may perceive a seamless and steady viewing perspective, even though each eyewear 104a, 104b, 104c, and 104d passes light only a fraction of the total time domain.
  • Various display technologies are capable of supporting timeslots sufficiently rapid to generate virtually seamless viewing perspectives of for four or more channels on a common display 102.
  • display systems driven by image rendering engines such as, for example, DLP® of Texas instruments Inc. may efficiently operate in the low microsecond range.
  • Each eyewear 104 may include labeling indicating assignment of a particular channel.
  • each eyewear 104 may include a switch that allows a user to select between available channels.
  • an additional eyewear set 104e is docked in cradle 106.
  • Cradle 106 generally refers to any device operable to synchronize the operation of eyewear 104 with the channels presented on display 102.
  • the synchronization is effected in part by a processor (not explicitly shown) housed within cradle 106 and associated logic stored within cradle 106.
  • cradle 106 may communicate via wireless to eyewear 104.
  • the wireless communication may be effected, for example, by infrared, radio waves, or Bluetooth technologies.
  • cradle 106 also serves as a docking station for eyewear 104.
  • cradle 106 may recharge eyewear 104 while they are docked.
  • each channel may include stereoscopic sub-channels for three- dimensional (3D) presentations on display 102.
  • the stereoscopic sub-channels may be presented superimposed onto display 102 using, for example, orthogonal polarizing filters or circular polarizing filters.
  • the left and right lenses 108 of each eyewear 104 may be oppositely polarized to present stereoscopic perspectives to the left and right eye simultaneously, thereby giving the illusion of three-dimensional depth.
  • the stereoscopic sub-channels may use alternate frame sequencing.
  • the left and right lenses 108 of eyewear 104 may alternate letting light through during the display of respective stereoscopic sub-channel frames of a particular channel.
  • two channels may be presented superimposed onto display 102 using, for example, orthogonal polarizing filters or circular polarizing filters.
  • eyewear 104 may be grouped into pairs with each unit having lenses 108 oppositely polarized from its mate.
  • eyewear 104a may be paired with eyewear 104b such that both lenses 108 of eyewear 104a pass left-circularly polarized light while extinguishing right-circularly polarized light.
  • eyewear 104b may pass right-circularly polarized light while extinguishing left-circularly polarized light.
  • each eyewear 104 may filter the viewing perspective of one particular channel even though two channels are presented on display 102 at any given time.
  • eyewear 104 may be operable to filter dual-channels while performing time-division multiplexing, thereby enabling applications requiring more than two channels.
  • Such embodiments may increase the efficiency of system 100, including, for example, enabling a greater number of channels or increasing the presentation quality for the same number of channels compared to non-paired eyewear 104 systems.
  • Conventional techniques to display multiple channels simultaneously, such as split screens are limited for a variety of reasons. For example, in gaming applications, the size of each split screen viewing area is typically a function of the number of players.
  • the teachings of the present disclosure recognize methods and systems capable of presenting any number of full-resolution channels "simultaneously" to a common viewing display 102.
  • various embodiments may privatize the perceptibility of any particular channel for receipt only by those wearing corresponding eyewear 104.
  • the privatization of full- resolution channels may significantly enhance the gaming experience.
  • the present disclosure has been described with reference to multi-player gaming applications, the teachings of the present disclosure apply to any number of other applications. For example, passengers on an airplane may wish to select from any of a number of movies "simultaneously" presented on display 102. Each movie may have a corresponding soundtrack that can be provided to passengers through private headsets.
  • a user may select at will between any of a variety of available viewing perspectives, such as, for example, between multiple camera angles of a sporting event.
  • the user selection may control the synchronization of eyewear 104 to the presentation of a particular one of the multiple camera angles, all of which are sequentially presented on a common viewing display 102.
  • a user may wish control the visualization of multiple channels such that two or more channels are visually overlaid.
  • eyewear 104 may be synchronized to provide light to a user's eyes from to or more channels presented on a common display 102, such as, for example, from two or more channels representing interrelated graphical data for engineering analysis.
  • a single user may wish to privatize visual information presented on display 102 that might otherwise be visible to others, as described further with reference to FIGS. 2A and 2B.
  • FIGS. 2A and 2B are block diagrams of a portion of an example private display system 200 according to the teachings of an alternative embodiment of the present disclosure.
  • system 200 is generally capable of privatizing the perceptibility of one or more channels by synchronizing their presentation on display 202 with the operation of a set of eyewear 204.
  • Display 202 and eyewear 204 are substantially similar in structure and function to display 102 and eyewear 104 of FIG. 1 respectively.
  • a processor (such as, for example, the processor housed in cradle 106 of FIG. 1) is operable to generate an encoded channel such that every main channel frame is followed by its photographic negative. As illustrated in FIG.
  • eyewear 204 is synchronized to pass light from display 202 to a user's eyes during the presentation of a primary channel or "positive" frame. Eyewear 204 then blocks light from display 202 to a user's eyes during the subsequent presentation of a photographic negative of the positive frame, as illustrated in FIG. 2B.
  • the positive and negative frames may each have a 50% duty.
  • the presentation of the encoded channel on display 202 would appear as a flat grey field to "onlookers" not wearing appropriately synchronized eyewear 204.
  • Various applications may benefit from having a flat grey field rather than random visual noise, which might be distracting or even disturbing to onlookers.
  • the positive and negative frames of an encoded channel may split a 66% and 33% duty cycle respectively. Such embodiments may maintain a flat grey field, from an onlooker perspective, by pulsing the negative frames twice as bright as the positive frames. In some embodiments, increasing the positive duty cycle may reduce image "flickering.”
  • multiple private channels may be presented to display 202.
  • a processor may generate an encoded channel from two independent channels.
  • the encoded channel may sequence through a positive frame of the first channel, a positive frame of the second channel, and then a photographic negative of a summation of the two preceding positive frames. Displaying each of the frames at appropriate brightness levels may maintain a flat grey field from an onlooker perspective.
  • Multiple eyewear 204 may be synchronized to a particular one of the two independent channels using principles described above. These generalized principles can be expanded to any number of channels given a fast enough image-rendering engine and corresponding eyewear.
  • Conventional privacy filters positioned in front of display devices, such as computer monitors commonly fail to completely privatize visual information.
  • conventional privacy filters typically do not easily provide the privatized visual information to multiple viewers. Accordingly, the teachings of the present disclosure recognize methods and systems for privatizing the display of one or more independent channels for potentially multiple users, while presenting a neutral screen to all onlookers.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

La présente invention concerne des procédés et appareils (100) pour rendre plusieurs canaux sur un affichage commun (102). Dans un mode de réalisation de procédé, un procédé pour permettre le partage d'un affichage par une pluralité d'utilisateurs désirant visualiser une pluralité d'images respectives inclut l'affichage de la pluralité d'images respectives de manière séquentielle sur l'affichage. Le procédé consiste en outre à permettre de manière sélective à l'image respective d'être visualisée par l'utilisateur respectif, mais pas par quiconque parmi la pluralité d'utilisateurs.
PCT/US2007/075431 2006-08-08 2007-08-08 Procédé et système pour des applications à visualisation multicanaux WO2008021857A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US82180506P 2006-08-08 2006-08-08
US60/821,805 2006-08-08
US11/648,424 2006-12-29
US11/648,424 US7808449B2 (en) 2006-12-29 2006-12-29 Method and system for multi-channel viewing applications

Publications (2)

Publication Number Publication Date
WO2008021857A2 true WO2008021857A2 (fr) 2008-02-21
WO2008021857A3 WO2008021857A3 (fr) 2008-10-02

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Cited By (8)

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GB2472438A (en) * 2009-08-06 2011-02-09 Sony Corp Multi-person 3D display system with several viewers watching different images on a single screen
EP2385706A1 (fr) * 2010-05-03 2011-11-09 LG Electronics Dispositif d'affichage d'images, dispositif de visualisation et leurs procédés de fonctionnement
EP2432218A1 (fr) * 2010-09-20 2012-03-21 EchoStar Global B.V. Procédés pour afficher un guide de programme électronique
CN102761713A (zh) * 2011-04-27 2012-10-31 鸿富锦精密工业（深圳）有限公司 遥控器及应用该遥控器的电视***
US8866892B2 (en) 2011-12-29 2014-10-21 Samsung Electronics Co., Ltd. Display apparatus and controlling methods thereof
EP2611176A3 (fr) * 2011-12-29 2015-11-18 Samsung Electronics Co., Ltd. Appareil d'affichage et son procédé de commande
WO2018107781A1 (fr) * 2016-12-16 2018-06-21 威创集团股份有限公司 Procédé et système de mise en œuvre d'une réalité virtuelle
US11170723B2 (en) 2018-03-09 2021-11-09 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user

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US20060247049A1 (en) * 2000-11-17 2006-11-02 Hideo Noro Control apparatus and method for games and others
US20070069977A1 (en) * 2005-09-26 2007-03-29 Adderton Dennis M Video training system
US20070081125A1 (en) * 2005-10-07 2007-04-12 Lewis Scott W Digital eyewear for telecommunications
US7331929B2 (en) * 2004-10-01 2008-02-19 General Electric Company Method and apparatus for surgical operating room information display gaze detection and user prioritization for control
US20080106488A1 (en) * 2006-06-28 2008-05-08 Yasuhiro Okuno Image processing apparatus and image processing method

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US20060247049A1 (en) * 2000-11-17 2006-11-02 Hideo Noro Control apparatus and method for games and others
US7331929B2 (en) * 2004-10-01 2008-02-19 General Electric Company Method and apparatus for surgical operating room information display gaze detection and user prioritization for control
US20070069977A1 (en) * 2005-09-26 2007-03-29 Adderton Dennis M Video training system
US20070081125A1 (en) * 2005-10-07 2007-04-12 Lewis Scott W Digital eyewear for telecommunications
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Cited By (15)

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Publication number Priority date Publication date Assignee Title
WO2011015846A1 (fr) * 2009-08-06 2011-02-10 Sony Corporation Procédé et appareil permettant un affichage stéréoscopique multi-utilisateur
GB2472438A (en) * 2009-08-06 2011-02-09 Sony Corp Multi-person 3D display system with several viewers watching different images on a single screen
CN102577401A (zh) * 2009-08-06 2012-07-11 索尼公司 用于立体多用户显示的方法和设备
US8803954B2 (en) 2010-05-03 2014-08-12 Lg Electronics Inc. Image display device, viewing device and methods for operating the same
EP2385706A1 (fr) * 2010-05-03 2011-11-09 LG Electronics Dispositif d'affichage d'images, dispositif de visualisation et leurs procédés de fonctionnement
EP2432218A1 (fr) * 2010-09-20 2012-03-21 EchoStar Global B.V. Procédés pour afficher un guide de programme électronique
US9325965B2 (en) 2010-09-20 2016-04-26 Echostar Technologies L.L.C. Separate display surfaces for EPG and program content
CN102761713A (zh) * 2011-04-27 2012-10-31 鸿富锦精密工业（深圳）有限公司 遥控器及应用该遥控器的电视***
US8866892B2 (en) 2011-12-29 2014-10-21 Samsung Electronics Co., Ltd. Display apparatus and controlling methods thereof
US9191656B2 (en) 2011-12-29 2015-11-17 Samsung Electronics Co., Ltd. Display apparatus and controlling methods thereof
EP2611176A3 (fr) * 2011-12-29 2015-11-18 Samsung Electronics Co., Ltd. Appareil d'affichage et son procédé de commande
EP2704438A3 (fr) * 2011-12-29 2017-05-17 Samsung Electronics Co., Ltd Appareil d'affichage et son procédé de commande
WO2018107781A1 (fr) * 2016-12-16 2018-06-21 威创集团股份有限公司 Procédé et système de mise en œuvre d'une réalité virtuelle
US11170723B2 (en) 2018-03-09 2021-11-09 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user
US11694640B2 (en) 2018-03-09 2023-07-04 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user

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