WO2012110910A1 - Éclairage ambiant pour applications à double visionnage - Google Patents

Éclairage ambiant pour applications à double visionnage Download PDF

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Publication number
WO2012110910A1
WO2012110910A1 PCT/IB2012/050530 IB2012050530W WO2012110910A1 WO 2012110910 A1 WO2012110910 A1 WO 2012110910A1 IB 2012050530 W IB2012050530 W IB 2012050530W WO 2012110910 A1 WO2012110910 A1 WO 2012110910A1
Authority
WO
WIPO (PCT)
Prior art keywords
display screen
frame
lighting
video
signal generator
Prior art date
Application number
PCT/IB2012/050530
Other languages
English (en)
Inventor
Marnik Bogaert
Original Assignee
Tp Vision Holding B.V.
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
Application filed by Tp Vision Holding B.V. filed Critical Tp Vision Holding B.V.
Publication of WO2012110910A1 publication Critical patent/WO2012110910A1/fr

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Classifications

    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • 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
    • H04N13/398—Synchronisation thereof; Control thereof

Definitions

  • the present invention relates to a system, apparatus, method and computer program product for generating ambient light for a display device.
  • Ambient or surround lighting technology is a lighting system that actively adjusts both brightness and colour of ambient or surround light based upon picture or video content of a display. Integrated into a display cabinet, such a lighting system is aimed to enable the viewer to see more picture detail, contrast and colour while eliminating on-screen reflections, reducing eye strain and visibility of backlight bleed as a typical liquid crystal display (LCD) problem due to leakage of backlight through LCD shutters.
  • Light is
  • the display device may become a lamp if it is not turned on.
  • the ambient lighting may colour the wall behind the TV in colours matching as good as possible the content watched on the TV.
  • the philosophy is that the colours generated by the ambient lighting system must not detract the customer from the content. On the contrary, it should have a relaxing effect by matching as much as possible the video content.
  • Dual View applications as mentioned above can cause problems with ambient lighting systems depending on the implementation. If ambient lighting is switched off in dual view mode, no one will be able to benefit from the lighting effect. Otherwise, if ambient lighting colours are based on only one of the two video sources, one viewer will see wrong ambient colours, making the ambient light experience quite detracting. As another option, if ambient lighting colours are based on both video sources, the ambient lighting colours will be a mix of the two video streams so that both viewers will have wrong ambient lighting colours.
  • ambient or surrounding light is split up as well to provide different ambient light to different viewers of a dual view display device with demultiplexing functionality.
  • two (or more) viewers watching different video contents on the same display screen also see different colours of ambient light.
  • the calculation of the ambient light colours is split up in two independent parts, each one based on its own video stream.
  • the ambient lighting system can thus be adapted so that the ambient light colours can be made different for the two or more viewers, so that both have an ambient light matching the video content they are looking at.
  • the first and second video streams may be multiplexed by supplying them to the display screen in a line-by-line alternation, wherein the first and second lighting signals are supplied in parallel to respective first and second light sources, wherein the demultiplexing is achieved by polarizing light generated by the displayed content of the first video stream to a first polarization direction, polarizing light generated by the displayed content of the second video stream to a second polarization direction, polarizing light generated by the first light source to the first polarization direction, and polarizing light generated by the second light source to the second polarization direction.
  • demultiplexing of the displayed multiplexed video contents and ambient lighting can simply be achieved by providing the viewers with viewing aids (e.g. goggles) having different polarization filters.
  • the first and second video streams may be multiplexed by supplying them to the display screen in a frame-by- frame alternation, wherein the first and second lighting signals are supplied to the display screen in a frame-by- frame alteration in synchronism with the first and second video streams, respectively, wherein a synchronization output corresponding to the frame -by- frame alteration is supplied to a remote viewing aid to be placed in front of a viewers eye and providing a shutter function synchronized with the synchronization output.
  • demultiplexing of the displayed multiplexed video contents and ambient lighting can simply be achieved by providing the viewers with viewing aids (e.g. goggles) having different shutter functionalities synchronized to the desired content and ambient lighting.
  • the video contents and related ambient lighting could be emitted into different viewing directions, so that viewers can watch their desired content and related ambient lighting at predetermined positions in front of the display device without requiring any viewing aid.
  • the above apparatus may be implemented as a hardware circuit integrated on a single chip or chip set, or wired on a circuit board.
  • at least parts of the apparatus may be implemented as a software program or routine controlling a processor or computer device.
  • Fig. 1 shows schematic block diagram of a dual view device according to a first embodiment
  • Fig. 2 shows a schematic block diagram of a dual view device according to a second embodiment.
  • an enhanced ambient lighting system for dual view or multi view devices where at least two ambient lighting signals are generated and multiplexed for at least two video streams.
  • processing capabilities of the current ambient lighting systems are at least doubled, resulting in at least two independent ambient lighting streams or signals.
  • the ambient lighting system is adapted to support dual view ambient light. I.e., at least two different ambient light colours are multiplexed together so that they can be demultiplexed by the 3D goggles or other demultiplexing elements or measures which might not even require viewing aids.
  • Doubling the processing capabilities is quite easy. It mainly consists in doubling the current ambient lighting calculation processing, so each ambient lighting signal generator can work on its own video content. The outcome or result will be two independent ambient lighting streams or signals.
  • the further implementation will mainly depend on which technology is used for the dual view application and its way of demultiplexing the contents which are displayed concurrently.
  • Fig. 1 shows a schematic block diagram of a dual view display device using passive 3D goggles according to a first embodiment.
  • two video streams VI and V2 of different content are generated by an image processor or video signal generator (IP) 10 and supplied to a multiplexer 12 where they are multiplexed in a line-by-line alteration (LPL-ALT) to a multiplexed signal V M -
  • the multiplexed video signal V M is supplied to a monitor or display screen (M) 14 and shown on the screen in a line-per-line alternation.
  • the first video stream VI may be displayed on the odd lines of the display screen (M) 14, while the second video stream may be displayed on the even lines of the display screen 14.
  • a striped polarizer foil or other selective polarizer or polarizing element is provided (e.g. attached), as indicated by the hatched pattern.
  • This polarizer will give a different polarization to the light coming from the odd lines, compared to the light coming from the even lines.
  • Passive polarizers in the goggles or other viewing aids are then able to filter out one of these polarizations, so that a viewer will see only one picture.
  • an ambient lighting source 15 is provided, which may be based on light emitting diodes (LEDs) or other light sources placed around the display screen 14 so as to colour or illuminate the frame around and/or wall behind the display screen 24 .
  • An ambient lighting processor or signal generator (AP) 16 generates two ambient lighting signals or streams Al and A2 supplied in parallel to the lighting source 15 at the display screen 14.
  • the first ambient lighting stream Al may be supplied to first LEDs (e.g. odd LEDs) of the lighting source 15 and the second ambient lighting stream may be supplied to second LEDs (e.g. even LEDs).
  • first LEDs e.g. odd LEDs
  • second ambient lighting stream e.g. even LEDs
  • any other distribution of first and second light sources may be selected.
  • a polarizer foil or other polarizer or polarizing element may be provided (e.g. attached), similar to the striped polarizing foil of the display screen 14 itself. This is again indicated by a different hatched pattern in Fig. 1.
  • Fig. 2 shows a schematic block diagram of a dual view display device using active 3D goggles (AG) 28 according to a second embodiment.
  • two video streams VI and V2 of different content are generated by an image processor or video signal generator (IP) 20 and supplied to a multiplexer 22 where they are multiplexed in a frame-by- frame alteration (FPF-ALT) to a multiplexed signal V M -
  • the multiplexed video signal V M is supplied to a monitor or display screen (M) 24 and shown on the screen in a frame-per-frame alternation.
  • the frames of the first video stream VI will be alternated in time by the frames of the second video stream V2.
  • the TV or display screen 24 has a synchronization output and may send a synchronization signal to the active goggles 28, indicating when the switch between the two streams takes place.
  • the synchronization may be transmitted to the active goggles 28 via a wired or wireless channel.
  • the active goggles 28 are equipped with a shutter functionality and will let through or pass the light only when the wanted video stream is displayed. Again, the viewer will see only one picture based on the timing of the synchronization signal.
  • an ambient lighting source 25 is provided, which may be based on light emitting diodes (LEDs) or other light sources placed around the display screen 24 so as to colour or illuminate the frame around and/or wall behind the display screen 24.
  • An ambient lighting processor or signal generator (AP) 26 which is synchronized to the video signal generator 20 by a synchronizing signal SYNC generates a multiplexed ambient lighting signal or stream A M supplied in frame-by- frame alteration to the lighting source 15 at the display screen 14.
  • the multiplexed ambient lighting stream V M is synchronized with the video streams VI and V2 and thus with the displayed content. This means that the ambient lighting source 15 will show colours matching the first video stream VI at the very moment this video stream is shown on the display screen 24 as well.
  • the synchronized shutter functionality of the active goggles 28 serves to filter a desired video content with its related ambient lighting.
  • an ambient lighting system is adapted to split up an ambient lighting signal, so that different ambient light colours can be presented to the different viewers.
  • the demultiplexing of the different contents and related ambient lighting can be achieved in various ways including polarization filters, shutters, directivity, etc.
  • a single processor, sensing unit or other unit may fulfil the functions of several items recited in the claims.
  • the mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
  • the proposed solution according to the above embodiments can be implemented at least partially in software modules at the relevant functional blocks of Figs. 1 and 2.
  • the resulting computer program product may comprise code means for causing a computer to carry out the steps of the above procedures of functions of Figs. 1 and 2.
  • the computer program may be stored/distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems. Any reference signs in the claims should not be construed as limiting the scope thereof.
  • an ambient lighting system is adapted to split up an ambient lighting signal, so that different ambient light colours can be presented to the different viewers.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

La présente invention se rapporte à des applications à double visionnage caractérisées en ce que différents spectateurs regardent différents contenus sur le même dispositif d'affichage. De façon plus spécifique, la présente invention se rapporte à un système d'éclairage ambiant adapté pour diviser un signal d'éclairage ambiant de telle sorte que différentes couleurs d'éclairage ambiant puissent être présentées aux différents spectateurs.
PCT/IB2012/050530 2011-02-17 2012-02-06 Éclairage ambiant pour applications à double visionnage WO2012110910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11154875.6 2011-02-17
EP11154875 2011-02-17

Publications (1)

Publication Number Publication Date
WO2012110910A1 true WO2012110910A1 (fr) 2012-08-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/050530 WO2012110910A1 (fr) 2011-02-17 2012-02-06 Éclairage ambiant pour applications à double visionnage

Country Status (1)

Country Link
WO (1) WO2012110910A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010015753A1 (en) * 2000-01-13 2001-08-23 Myers Kenneth J. Split image stereoscopic system and method
EP1511328A2 (fr) * 2003-08-25 2005-03-02 Barco N.V. Méthode et dispositif d'affichage stéréoscopique avec plusieurs appareils de traitement vidéo
GB2405517A (en) 2003-08-30 2005-03-02 Sharp Kk Multiple view display
WO2007107930A1 (fr) * 2006-03-20 2007-09-27 Koninklijke Philips Electronics, N.V. Systeme d'eclairage ambiant par projecteur a balayage
US20070266412A1 (en) * 2006-05-10 2007-11-15 Trowbridge Scott R Time-sliced multiplexed image display
US20080036854A1 (en) 2006-08-08 2008-02-14 Texas Instruments Incorporated Method and system of communicating and rendering stereoscopic and dual-view images
US20090059589A1 (en) * 2007-08-30 2009-03-05 Himax Technologies Limited Ambient light system and method for generating ambient light
EP2169967A2 (fr) * 2008-09-29 2010-03-31 Disney Enterprises, Inc. Théâtre interactif avec participation du public

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010015753A1 (en) * 2000-01-13 2001-08-23 Myers Kenneth J. Split image stereoscopic system and method
EP1511328A2 (fr) * 2003-08-25 2005-03-02 Barco N.V. Méthode et dispositif d'affichage stéréoscopique avec plusieurs appareils de traitement vidéo
GB2405517A (en) 2003-08-30 2005-03-02 Sharp Kk Multiple view display
WO2007107930A1 (fr) * 2006-03-20 2007-09-27 Koninklijke Philips Electronics, N.V. Systeme d'eclairage ambiant par projecteur a balayage
US20070266412A1 (en) * 2006-05-10 2007-11-15 Trowbridge Scott R Time-sliced multiplexed image display
US20080036854A1 (en) 2006-08-08 2008-02-14 Texas Instruments Incorporated Method and system of communicating and rendering stereoscopic and dual-view images
US20090059589A1 (en) * 2007-08-30 2009-03-05 Himax Technologies Limited Ambient light system and method for generating ambient light
EP2169967A2 (fr) * 2008-09-29 2010-03-31 Disney Enterprises, Inc. Théâtre interactif avec participation du public

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