DE102008008565A1 - Projection method and control device for a projection device - Google Patents
Projection method and control device for a projection device Download PDFInfo
- Publication number
- DE102008008565A1 DE102008008565A1 DE102008008565A DE102008008565A DE102008008565A1 DE 102008008565 A1 DE102008008565 A1 DE 102008008565A1 DE 102008008565 A DE102008008565 A DE 102008008565A DE 102008008565 A DE102008008565 A DE 102008008565A DE 102008008565 A1 DE102008008565 A1 DE 102008008565A1
- Authority
- DE
- Germany
- Prior art keywords
- control signals
- pixels
- generator
- modulation signal
- address
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
Abstract
Die Erfindung betrifft ein Projektionsverfahren mit den folgenden Schritten: Generieren von zwei periodischen Steuersignalen (3, 4; 21, 22) zum Anregen einer zweiachsigen Ablenkeinheit; Erzeugen eines Lichtmodulationssignals (5; 28) zum Modulieren einer Intensität eines Lichtstrahls, der durch die zweiachsige Ablenkeinheit abgelenkt wird; wobei ein Taktgenerator (8) die zwei periodischen Steuersignale (3, 4; 21, 22) und das Lichtmodulationssignal (5; 28) synchronisiert.The invention relates to a projection method comprising the steps of: generating two periodic control signals (3, 4, 21, 22) for exciting a biaxial deflection unit; Generating a light modulating signal (5; 28) for modulating an intensity of a light beam deflected by the biaxial deflecting unit; wherein a clock generator (8) synchronizes the two periodic control signals (3, 4; 21, 22) and the light modulation signal (5; 28).
Description
STAND DER TECHNIKSTATE OF THE ART
Die vorliegende Erfindung betrifft ein Projektionsverfahren und eine Steuerungsvorrichtung für eine Projektionsvorrichtung.The The present invention relates to a projection method and a Control device for a projection device.
Aus
der
OFFENBARUNG DER ERFINDUNGDISCLOSURE OF THE INVENTION
Das erfindungsgemäße Projektionsverfahren sieht folgenden Schritten vor: Generieren von zwei periodischen Steuersignalen zum Anregen einer zwei-achsigen Ablenkeinheit; Erzeugen eines Lichtmodulationssignals zum Modulieren einer Intensität eines Lichtstrahls, der durch die zwei-achsige Ablenkeinheit abgelenkt wird; wobei ein Taktgenerator die zwei periodischen Steuersignale und das Lichtmodulationssignal synchronisiert.The The projection method according to the invention provides the following Steps before: Generating two periodic control signals for Exciting a two-axis deflection unit; Generating a light modulation signal for modulating an intensity of a light beam, the is deflected by the two-axis deflection unit; where a clock generator the two periodic control signals and the light modulation signal synchronized.
Das Verfahren ermöglicht eine einfache Adressierung aller möglichen Punkte der Lissajous-Figur durch einen einfachen Taktgenerator.The Method allows easy addressing of all possible Points of the Lissajous figure by a simple clock generator.
Eine erfindungsgemäßge Ansteuereinrichtung sieht vor: einen Signalgenerator zum Generieren von zwei periodischen Steuersignalen, die zum Anregen einer zwei-achsigen Ablenkeinheit dienen; einen Modulationssignalgenerator zum Erzeugen eines Lichtmodulationssignals zum Modulieren einer Intensität eines Lichtstrahls, der durch die zwei-achsig Ablenkeinheit abgelenkt wird; und einen Taktgenerator zum Synchronisieren des Signalgenerators und des Modulationssignalgenerators.A Activation device according to the invention provides: a signal generator for generating two periodic control signals, which serve to excite a two-axis deflection unit; one Modulation signal generator for generating a light modulation signal for modulating an intensity of a light beam, the is deflected by the two-axis deflection unit; and a clock generator for synchronizing the signal generator and the modulation signal generator.
KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS
Die vorliegende Erfindung wird nachfolgend anhand bevorzugter Ausführungsformen und beigefügten Figuren erläutert. In den Figuren zeigen:The The present invention will be described below with reference to preferred embodiments and attached figures. In the figures demonstrate:
AUSFÜHRUNGSFORMEN DER ERFINDUNGEMBODIMENTS THE INVENTION
Ein
Signalgenerator
Ein
Lichtstrahl, z. B. von einem Laser, wird durch den Spiegel auf einen
Projektionsschirm abgelenkt. Die beiden sinusförmigen Auslenkungen
bewirken, dass der Lichtstrahl entlang einer Lissajous-Kurve oder
Figur über die Projektionsfläche geführt
wird. Eine entsprechende Lissajous-Figur ist in
Bedingt
durch die periodische Ansteuerung wiederholt sich die Lissajous-Figur
periodisch. Die Wiederholrate der Lissajous-Figur ist durch den größten
gemeinsamen Teiler der Perioden der Ansteuersignale
Die
Ansteuersignale
In
Das
Lichtmodulationssignal
Das
Lichtmodulationssignal
Bei
dem Sortierender Bildpunkte kann berücksichtigt werden,
dass die Lissajous-Figur
Eine
Alternative sieht vor, eine Zugriffstabelle
Das
Taktsignal
Die
Synchronisation kann einen Zähler
Die
beiden ausgegebenen Steuersignalen
Ein
Zuordnen der Steuersignale
Der
Signalgenerator
Eine
externe Berechnung der Zuordnung zwischen der Lissajous-Figur
Eine farbige Projektion kann durch mehrere farbige Lichtstrahlen und zugehörigen Projektionen erreicht werden.A colored projection can be through multiple colored beams of light and associated projections are achieved.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - US 6843568 [0002] US 6843568 [0002]
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008008565.0A DE102008008565B4 (en) | 2008-02-08 | 2008-02-08 | Projection method and control device for a projection device |
GB0901761A GB2457155A (en) | 2008-02-08 | 2009-02-04 | Projection method where the two periodic control signals and the light modulation signal are synchronised by a clock generator |
FR0950717A FR2927426A1 (en) | 2008-02-08 | 2009-02-05 | PROJECTION METHOD AND DEVICE FOR CONTROLLING A PROJECTION DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008008565.0A DE102008008565B4 (en) | 2008-02-08 | 2008-02-08 | Projection method and control device for a projection device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008008565A1 true DE102008008565A1 (en) | 2009-08-13 |
DE102008008565B4 DE102008008565B4 (en) | 2022-02-03 |
Family
ID=40469521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008008565.0A Expired - Fee Related DE102008008565B4 (en) | 2008-02-08 | 2008-02-08 | Projection method and control device for a projection device |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE102008008565B4 (en) |
FR (1) | FR2927426A1 (en) |
GB (1) | GB2457155A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009058762A1 (en) | 2009-12-14 | 2011-06-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A deflection apparatus for a projection apparatus, a projection apparatus for projecting an image and a method for controlling a deflection apparatus for a projection apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109752839B (en) * | 2018-12-18 | 2021-06-08 | 华为技术有限公司 | Processor, display control device, system, image processing method and device |
CN111505841B (en) * | 2019-01-31 | 2023-06-23 | 成都理想境界科技有限公司 | Laser modulation method, laser scanning device and system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6843568B2 (en) | 2001-10-05 | 2005-01-18 | Fraunhofer-Gessellschaft | Projection apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06183059A (en) * | 1992-10-23 | 1994-07-05 | Minolta Camera Co Ltd | Light signal generating device |
US20060145945A1 (en) | 2002-01-07 | 2006-07-06 | Lewis John R | Scanned beam system with distortion compensation |
US7972011B2 (en) * | 2006-03-14 | 2011-07-05 | Panasonic Corporation | Image projection apparatus and image projection system having beam deflection section |
-
2008
- 2008-02-08 DE DE102008008565.0A patent/DE102008008565B4/en not_active Expired - Fee Related
-
2009
- 2009-02-04 GB GB0901761A patent/GB2457155A/en not_active Withdrawn
- 2009-02-05 FR FR0950717A patent/FR2927426A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6843568B2 (en) | 2001-10-05 | 2005-01-18 | Fraunhofer-Gessellschaft | Projection apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009058762A1 (en) | 2009-12-14 | 2011-06-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A deflection apparatus for a projection apparatus, a projection apparatus for projecting an image and a method for controlling a deflection apparatus for a projection apparatus |
WO2011082789A1 (en) | 2009-12-14 | 2011-07-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Deflection system for a projection device, projection device for projecting an image and method for actuating a deflection system for a projection device |
US9151949B2 (en) | 2009-12-14 | 2015-10-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Deflection device for a projection apparatus, projection apparatus for projecting an image and method for controlling a deflection apparatus for a projection apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB2457155A (en) | 2009-08-12 |
DE102008008565B4 (en) | 2022-02-03 |
GB0901761D0 (en) | 2009-03-11 |
FR2927426A1 (en) | 2009-08-14 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |