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WO2009057053A1 - Système de réglage d'un dispositif projecteur et son procédé - Google Patents

Système de réglage d'un dispositif projecteur et son procédé Download PDF

Info

Publication number
WO2009057053A1
WO2009057053A1 PCT/IB2008/054489 IB2008054489W WO2009057053A1 WO 2009057053 A1 WO2009057053 A1 WO 2009057053A1 IB 2008054489 W IB2008054489 W IB 2008054489W WO 2009057053 A1 WO2009057053 A1 WO 2009057053A1
Authority
WO
WIPO (PCT)
Prior art keywords
projector device
projector
signal
processing system
component
Prior art date
Application number
PCT/IB2008/054489
Other languages
English (en)
Inventor
Matthew Harris
Cristina Bescos Del Castillo
Original Assignee
Koninklijke Philips Electronics N.V.
Philips Intellectual Property & Standards Gmbh
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 Koninklijke Philips Electronics N.V., Philips Intellectual Property & Standards Gmbh filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2009057053A1 publication Critical patent/WO2009057053A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/145—Housing details, e.g. position adjustments thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2206/00—Systems for exchange of information between different pieces of apparatus, e.g. for exchanging trimming information, for photo finishing

Definitions

  • the invention relates to a method of adjusting a projector device for projecting images onto a surface, a device for use in a system for adjusting a projector device for projecting images onto a surface, and a system for adjusting a projector device for projecting images onto a surface.
  • the invention also relates to a method for use in a system for adjusting a projector device for projecting images onto a surface, and a computer programme.
  • This object is achieved by the method of adjusting a projector device for projecting images onto a surface and provided with at least one adjustment device for adjusting at least a component of the projector device so as to affect at least one geometrical parameter of a beam of light projected onto the surface, wherein the projector device is arranged to receive a signal carrying video data over a communications link from a data processing system located at a distance from the projector device, which method includes: measuring motion of a device housing at least a component of the data processing system and moveable independently of the projector device, and transforming the measured motion into at least one signal for controlling at least one of the adjustment devices.
  • the method can be used to adjust the projector device even when it is located at a relatively large distance from the data processing system providing the video data.
  • the user will generally be located in the immediate vicinity of the data processing system in order to set up the presentation or video playback, making the adjustment method easy to use for the user.
  • no menus need be navigated or separate controls learned, because adjustment is effected simply by moving the device housing at least a component of the data processing system.
  • adjustment can take place at the appropriate speeds in this way, by moving the device housing at least a component of the data processing system quickly in a relatively large increment for a first crude adjustment and then nudging it to fine tune the position of the boundary of the area of the surface on which images are to be projected.
  • the adjustment can therefore be effected in an intuitive manner.
  • An embodiment of the method includes measuring motion by means of at least one inertial sensor held in fixed relation to the device housing at least a component of the data processing system.
  • An effect is to allow the method to be implemented using standard data processing systems, i.e. those provided without sensors for measuring motion of device housing components of the data processing system.
  • the co-operating connectors hold the dongle comprising the sensor in fixed relation to the device housing at least a component of the data processing system, so that movement of the latter is measured.
  • An effect is to be able to compensate for unsuitable placements of the projector device.
  • the method allows for compensation of incorrect alignments between the projector device and the area of the surface on which it is intended to display images.
  • tilt adjustment can be effected, in order to rotate the area of projection.
  • An embodiment of the method includes: measuring a rate of motion of the device housing at least a component of the data processing system, and transforming the measured motion into at least one control signal for controlling at least one of the adjustment devices, such that a rate of adjustment of at least one geometrical parameter of the projected beam of light is changed in dependence on the measured rate of motion.
  • An effect is to allow for compensation of significant misalignment between the projector device and the surface, yet also allow for fine tuning, and without the need for separate user controls to switch between these modes of adjustment.
  • the device according to the present invention is configured for use in a system for adjusting a projector device for projecting images onto a surface, which projector device is provided with at least one adjustment device for adjusting at least a component of the projector device so as to affect at least one geometrical parameter of a beam of light projected onto the surface, wherein the device is provided with means for connecting it in generally fixed relation to a device housing at least a component of a data processing system and moveable independently of the projector device, and wherein the device includes: at least one sensor for measuring motion of the device, a processing system for transforming the measured motion into at least one signal for a system for controlling at least one of the adjustment devices, and an interface for providing the at least one signal for controlling at least one of the adjustment devices.
  • the system for adjusting a projector device for projecting images onto a surface and provided with at least one adjustment device for adjusting at least a component of the projector device so as to affect at least one geometrical parameter of a beam of light projected onto the surface, wherein the projector device is arranged to receive a signal carrying video data over a communications link from a data processing system located at a distance from the projector device, which system includes: at least one sensor for measuring motion of a device housing at least a component of the data processing system and moveable independently of the projector device, a processing system for transforming the measured motion into at least one signal for a system for controlling at least one of the adjustment devices, and an interface for providing the at least one signal to the control system.
  • the system is suited to adjusting a projector device located at a distance from the data processing system.
  • a user is able to interact with the system in a simple and intuitive manner to carry out the adjustment.
  • the user need only move the device housing at least a component of the data processing system.
  • the system is configured to carry out a method of adjusting a projector device according to the invention.
  • a method for use in a system for adjusting a projector device for projecting images onto an area of a surface which projector device is provided with at least one adjustment device for adjusting at least a component of the projector device so as to affect at least one geometrical parameter of a beam of light projected onto the surface, which method includes: receiving a signal from a device according to the invention, transforming the signal into at least one control signal for a system for controlling at least one of the adjustment devices, and causing the control signal to be communicated to the control system.
  • a computer programme including a set of instructions capable, when incorporated in a machine-readable medium, of causing a system having information processing capabilities to perform a method according to the invention for use in a system for adjusting a projector device for projecting images onto an area of a surface.
  • the projector 1 may be any known type of video projector, e.g. a CRT (Cathode Ray Tube) projector, LCD (Liquid Crystal Display) projector, DLP (Digital Light Processor) or LCoS (Liquid Crystal on Silicon) projector.
  • CTR Cathode Ray Tube
  • LCD Liquid Crystal Display
  • DLP Digital Light Processor
  • LCoS Liquid Crystal on Silicon
  • the projector 1 is arranged to receive a signal carrying video data over a wired connection 4 to a laptop computer 5.
  • the laptop computer 5 is located at a distance between 0.5 m to several tens of metres to the projector 1.
  • the projector 1 and the laptop computer 5 are physically distinct systems.
  • Any type of portable computer can be used instead of the laptop computer 5, e.g. a Personal Digital Assistant (PDA), smart phone, or even a very basic data processing device like a streaming media server.
  • the video signal is provided by a data processing system comprising a device housing a computer and at least one further device housing a peripheral component of the computer, with the further device being portable at least to a limited extent. Examples of such a further device would be a keyboard or other type of input device with a wired or wireless connection to the computer.
  • the signal carrying video data over the wired connection 4 can be a signal for use in one of any number of established video interfaces, e.g. VGA, S-Video, Scart, DVI, HDMI or UDI. Furthermore, the signal is provided over a wireless connection instead of the wired connection 4 in an alternative embodiment.
  • the linearity of the edges 7-10 may also be affected. The adjustment is carried out independently of the processing of image contents.
  • the projector 1 used as an example includes a lamp 11, an LCD panel system 12, an adjustable lens system 13 and an exit lens 14.
  • a controller 15 controls the operation of the projector 1.
  • the LCD panel system 12 is controlled to modulate the light from the lamp 11 to create the images.
  • the projector 1 is further provided with first and second linear actuators 18,19 for adjusting the height of the back and a corner of the projector 1 relative to the support surface 6.
  • the actuators 18,19 are provided with driving signals by respective actuator controllers 20,21 arranged to generate the driving signals in response to commands from the controller 15 indicating a desired displacement. In this way, the area 2 projected onto the screen 3 can be rotated and moved laterally and in height.
  • One or more actuators (not shown) in the lens system 13 are arranged to displace lenses relative to a housing 22 of the projector 1, to allow the area 2 to be increased or reduced in size. This is also carried out in response to commands from the controller 15.
  • the controller 15 is provided with the commands, or instructions that it translates into the commands, by means of a signal from the laptop computer 5. Only certain components are shown in Fig. 2.
  • the laptop 5 includes a graphics processor 23 for generating video data, and a video output 24 for providing a signal that is a composite of the signal carrying the video data and a signal carrying the projector adjustment commands to the controller 15 of the projector 1.
  • the signal carrying the adjustment commands may be provided in the consumer electronics control signal of an HDMI interface.
  • the signal may be provided in a frequency range separate from the (analogue) video signal, e.g. a VGA signal, and then filtered out by the video signal interface 16.
  • the adjustment commands are generated by software running on the laptop 5 using a central processing unit 25 and main memory 26.
  • the software receives a signal from a dongle 27 connected in generally fixed relation to the laptop 5 by means of mating connectors 28,29, e.g. USB (Universal Serial Bus) type A or type B connectors.
  • the laptop 5 includes a host controller 30, and the dongle 27 includes a further controller 31 for communicating the signal.
  • the dongle 27 further includes at least one sensor 32 for measuring motion of the dongle 27, and thus of the laptop 5.
  • the sensor 32 is an inertial sensor such as an accelerometer. It measures acceleration of the dongle 27, from which both displacement of the dongle and a rate of motion are inferred.
  • the software infers the rate of motion from the displacement data it receives from the dongle 27.
  • the software can perform an integration to derive the displacement.
  • the dongle 27 provides all the data.
  • one or more gyroscopes are used to measure motion in terms of changes in orientation, augmenting the linear acceleration data provided by the accelerometer.
  • the software analyses the measured motion and transforms it into adjustment commands for the projector controller 15. Where the rate of motion is available, the measured motion is transformed into a signal for controlling the actuators 18,19 and/or lens system 13 such that a rate of adjustment of the edges 7-10 is changed in dependence on the measured rate of motion. That is to say that rapid and large displacements of the laptop 5 result in rapid and large displacements of the edges 7-10 of the area 2 of display.
  • the laptop 5 running the software does not analyse the measured motion and transforms it into adjustment commands for the projector controller 15.
  • a processing device in the dongle such as the controller 31 analyses the measured motion and transforms it into at least one signal for controlling the actuators 18,19 and/or the lens system 13.
  • the signal carries data indicating desired adjustments, which are communicated to the controller 15 of the projector.
  • the data may be in the form of desired adjustments to the edges 7-10 of the area 2 of illumination, which are translated by the controller 15 in the projector 1 into appropriate signals for the controllers 20,21 driving the actuators 18,19.
  • the dongle 27 is provided with a wireless or wired network interface for communication with the projector 1 or with a further dongle or other peripheral device connected to the projector 1.
  • one or more sensors for measuring motion are additionally or alternatively fixed directly to the laptop 5, e.g. glued to a housing of the laptop 5 or fixed internally to a chassis or printed circuit board of the laptop 5.
  • at least one sensor is arranged to measure swivelling motion of one of two components of the laptop 5 connected via a hinged connection relative to the other.
  • swivelling motion of a lid 33 of the laptop 5 housing a screen 34 relative to a body 35 of the laptop 5 may be measured (this is also possible in cases where a clamshell cellular handset or a PDA with a hinged cover is used).
  • the measured motion of the lid 33 is analysed and transformed into a signal to direct the projector controller 15 to adjust the relative position of the edges 7-10.
  • the lens system 13 can be adjusted to affect the size of the area 2 or to remove skew of the area 2 where it is initially not completely rectangular.
  • translatory motion of the laptop 5 will result in translations of the area 2, whereas an essentially rotary motion will result in other types of adjustment.
  • the result is a relatively intuitive interface for adjusting the projector 1 to affect the area 2 of projection.
  • the intuitive nature of the method is further enhanced by making use of the fact that the laptop 5 is configured to have a pre-determined side facing a user, in normal use, so as to enable the user to interact with the device.
  • the user is, in normal use, positioned facing the laptop screen 34.
  • An intuitive method of adjustment is provided by transforming the measured motion of the laptop 5 into at least one control signal for controlling at least one of the actuators 18,19 and/or the lens system 13 such that at least one of the edges 7-10 is moved in a direction corresponding to a measured direction of movement of the laptop 5 relative to the user.
  • the laptop 5 is moved to the left, then so is the area 2 on which the projector 1 projects images. If the laptop 5 is moved forward, the size of the area 2 is increased, so that it appears to be closer.
  • a signal for controlling the projector 1 can be provided over a separate wired or wireless connection.
  • Some or all of the adjustment devices may be separate from the projector 1, and provided with their own control system that is arranged to receive a signal from the laptop 5 or dongle 27 over such a separate wired or wireless connection.
  • motion of a peripheral device for providing input data to the laptop 5 may be measured and transformed into at least one signal for controlling at least one of the adjustment devices 13,18,19. It is also conceivable that motion be measured relative to the projector 1, e.g. using an optical or other electromagnetic system.

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

La présente invention concerne un dispositif projecteur (1) pour projeter des images sur une surface (3) qui est pourvu d'au moins un dispositif de réglage (13, 18, 19) pour régler au moins un composant du dispositif projecteur (1) afin d'affecter au moins un paramètre géométrique d'un faisceau de lumière projeté sur la surface (3). Le dispositif projecteur (1) est arrangé pour recevoir un signal transportant des données vidéo sur une liaison de communication (4) d'un système de traitement de données situé à une distance du dispositif projecteur (1). L'invention concerne également un procédé de réglage du dispositif projecteur destiné à affecter au moins un paramètre géométrique du faisceau de lumière projeté sur la surface (3), qui consiste à mesurer le déplacement d'un dispositif (5, 33) hébergeant au moins un composant du système de traitement de données et à déplacer indépendamment le dispositif projecteur (1), et à transformer le déplacement mesuré en au moins un signal pour commander au moins l'un des dispositifs de réglage (13, 18, 19).
PCT/IB2008/054489 2007-11-01 2008-10-29 Système de réglage d'un dispositif projecteur et son procédé WO2009057053A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07119815.4 2007-11-01
EP07119815 2007-11-01

Publications (1)

Publication Number Publication Date
WO2009057053A1 true WO2009057053A1 (fr) 2009-05-07

Family

ID=40230033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/054489 WO2009057053A1 (fr) 2007-11-01 2008-10-29 Système de réglage d'un dispositif projecteur et son procédé

Country Status (1)

Country Link
WO (1) WO2009057053A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222892A1 (en) * 2002-05-31 2003-12-04 Diamond Michael B. Method and apparatus for display image adjustment
WO2005046225A1 (fr) * 2003-11-06 2005-05-19 Koninklijke Philips Electronics, N.V. Projecteur a pieds motorises permettant la commande de la rotation de l'image
US20060017692A1 (en) * 2000-10-02 2006-01-26 Wehrenberg Paul J Methods and apparatuses for operating a portable device based on an accelerometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060017692A1 (en) * 2000-10-02 2006-01-26 Wehrenberg Paul J Methods and apparatuses for operating a portable device based on an accelerometer
US20030222892A1 (en) * 2002-05-31 2003-12-04 Diamond Michael B. Method and apparatus for display image adjustment
WO2005046225A1 (fr) * 2003-11-06 2005-05-19 Koninklijke Philips Electronics, N.V. Projecteur a pieds motorises permettant la commande de la rotation de l'image

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