US6631995B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and device for generating an image having a desired brightness
Assignee: Koninklijke Philips NV
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Filing: 1999-09-02
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Granted: 2003-10-14
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Expires: 2019-09-02
Abstract
Abstract The present invention relates to a method of generating an image having a desired brightness, which image is generated by means of a device provided with at least one light source, at least one electro-optical light modulation panel and at least one light-control device. The light from the light source is converted into an image having a desired brightness via at least the electro-optical light modulation panel and the light-control device. The image to be projected is analyzed in a regulator, whereafter the electro-optical light modulation panel and the light-control device are driven, while a too bright image is generated by means of the electro-optical light modulation panel, which image is converted by means of the light-control device into an image having a desired brightness and a desired contrast.
Inventors
- 👤 Douglas A. Stanton
- 👤 Martinus V. C. Stroomer
- 👤 Adrianus J. S. M. De Vaan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:46
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3111; H04N9/312; H04N9/3126; H04N9/3141; H04N9/315; H04N9/3155
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A method of generating an image having a desired brightness, which image is generated by means of a device comprising at least one light source, at least one electro-optical light modulation panel and at least one light-control device, the light from the light source being converted into an image having a desired brightness via at least the electro-optical light modulation panel and the light-control device, characterized in that the image to be projected is analyzed in a regulator, whereafter the electro-optical light modulation panel and the light-control device are driven, and a too bright image is generated by means of the electro-optical light modulation panel, which image is converted by means of the light-control device into an image having a desired brightness and a desired contrast, operation of the light control device being optimized for each image.
Claim 2
Independent Claim
137 words
A method of generating an image having a desired brightness, which image is generated by means of a device comprising at least one light source, at least one electro-optical light modulation panel and at least one light-control device, the light from the light source being converted into an image having a desired brightness via at least the electro-optical light modulation panel and the light-control device, characterized in that the image to be projected is analyzed in a regulator, whereafter the electro-optical light modulation panel and the light-control device are driven, and a too bright image is generated by means of the electro-optical light modulation panel, which image is converted by means of the light-control device into an image having a desired brightness and a desired contrast, operation of the light control device being optimized for each image.
Claim 3
Dependent Claim
94 words
A device which is suitable for generating an image having a desired brightness by means of the method as claimed in claim 1 , which device comprises at least one light source, at least one electro-optical light modulation panel and at least one light-control device, characterized in that the device comprises a regulator for analyzing the image to be projected, driving the electro-optical light modulation panel for generating a too bright image, and driving the light-control device for converting the too bright image into an image having a desired brightness and a desired contrast.
Claim 4
Dependent Claim
39 words
A device as claimed in claim 2 , characterized in that the device comprises at least two electro-optical light modulation panels and one light-control device, by means of which images generated on the light modulation panels are simultaneously convertible.
Claim 5
Dependent Claim
56 words
A device as claimed in claim 2 , characterized in that the device comprises a plurality of electro-optical light modulation panels and at least a corresponding plurality of light-control devices, each light modulation panel being associated with a cooperating light-control device, by means of which the image generated on the associated light modulation panel is convertible.
Claim 6
Dependent Claim
20 words
A device as claimed in claim 2 , characterized in that the light-control device comprises an electro-optical light modulation panel.
Claim 7
Dependent Claim
18 words
A device as claimed in claim 2 , characterized in that the light-control device comprises a three-color shutter.
Claim 8
Dependent Claim
21 words
A device as claimed in claim 1 , characterized in that the brightness of the light source is adjustable per image.
Claim 9
Dependent Claim
20 words
A device as claimed in claim 1 , characterized in that the light-control device comprises a light source drive unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-10-13 | 2007-04-14 | 2007-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-10-13 | 2011-04-14 | 2011-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-10-13 | 2015-04-14 | 2015-10-14 | $7700.00 | Window Closed / Lapsed |