Single panel color projection video display having improved scanning

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5528318
SERIAL NO

08368575

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A color projection video system utilizing only a single light valve. A white light source is separated into red, green and blue bands. Scanning optics in the form of three prisms coaxially mounted for rotation cause the RGB bands to be sequentially scanned across a light valve, such as a transmission LCD panel. Prior to each color passing over a given row of panels on the light valve, that row will be addressed, by the display electronics with the appropriate color content of that portion of the image which is being displayed. The image is projected by a projection lens onto a viewing surface, such as a screen. The sequence of light bands occurs so quickly as to give the viewer an appearance of simultaneous full color.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
North American Philips CorporationNEW YORK, NY44

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Janssen, Peter J Scarborough, NY 54 897

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Jersey Nuclear-Avco Isotopes, Inc. (1)
* 4319807 Rotating optical frequency chirp device 24 1980
 
Messerschmitt-Bolkow-Blohm GmbH (1)
* 4940312 Scanning prism 5 1988
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
6356700 Efficient light engine systems, components and methods of manufacture 170 1999
* 2004/0160,655 Pulse width modulation sequence generation 0 2004
* 2005/0001,995 Color recapture for display systems 0 2004
* 2006/0215,285 Rod integrators for light recycling 1 2006
 
SEIKO EPSON CORPORATION (1)
* 7494225 Projector including an illumination device with a light cut-off member and rotating prism 1 2006
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
* 6624756 Liquid crystal light valve system with automatic color balance correction 11 1999
 
PANASONIC CORPORATION (3)
* 7006163 Illuminating device and projector using it and built-in display unit 4 2001
* 2002/0118,311 Illuminating device and projector using it and built-in display unit 0 2002
7483086 Illumination optical system, projection video system using the same, and integral-type video display 0 2007
 
SONY CORPORATION (3)
* 6867813 Flat moldable HDTV display 0 2001
7154554 Flat moldable HDTV display 0 2005
* 2005/0134,728 Flat moldable HDTV display 0 2005
 
U.S. PHILIPS CORPORATION (1)
* 5684504 Display device 17 1995
 
HITACHI, INC. (1)
* 2003/0164,901 Projection type image display apparatus 0 2003
 
IBM JAPAN LTD. (1)
6219110 Single-panel color projector 25 1999
 
HITACHI, LTD. (6)
6987546 Projection type image display apparatus 4 2002
* 2003/0169,376 Projection type image display apparatus 2 2002
6798580 Projection type image display apparatus 2 2002
7170567 Projection type image display apparatus 5 2003
* 2005/0162,749 Image display device 1 2005
* 2006/0209,421 Optical integrator 1 2006
 
The University of North Carolina at Chapel Hill (6)
8152305 Methods, systems, and computer program products for full spectrum projection 1 2005
* 2009/0009,723 Methods, Systems, and Computer Program Products for Full Spectrum Projection 4 2005
8490469 Methods and systems for multiforce high throughput screening 4 2008
* 2010/0101,308 METHODS AND SYSTEMS FOR MULTIFORCE HIGH THROUGHPUT SCREENING 3 2008
8586368 Methods and systems for using actuated surface-attached posts for assessing biofluid rheology 2 2010
9238869 Methods and systems for using actuated surface-attached posts for assessing biofluid rheology 1 2013
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
* 6803902 Variable rate row addressing method 1 2002
 
TEXAS INSTRUMENTS INCORPORATED (12)
7052150 Rod integrator 13 2000
* 2001/0008,470 Rod integrators for light recycling 0 2000
* 2003/0020,839 Integrating filter 13 2002
6967759 Pulse width modulation sequence generation 4 2002
6987597 Pulse width modulation sequence generation 5 2004
6898019 Pulse width modulation sequence generation 2 2004
7066605 Color recapture for display systems 7 2004
7118226 Sequential color recapture for image display systems 5 2005
* 2005/0185,148 Sequential color recapture for image display systems 3 2005
7184213 Rod integrators for light recycling 2 2006
7252391 Method of producing an image 3 2006
* 2007/0268,465 Sequential Color Recapture for Projection Systems 2 2007
 
ADVANCED PERIPHERALS TECHNOLOGIES, INC., A JAPANESE CORPORATION (1)
6457833 Digital micro mirror device and single-panel color projector using it 22 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
7212254 Illumination optical system, projection video system using the same, and integral-type video display 0 2005
* 2006/0092,336 Illumination optical system, projection video system using the same, and integral-type video display 0 2005
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (3)
* 5892623 Mutli-color-band light source 26 1997
* 5845981 Multi-color-band scrolling across single-panel light valve 56 1997
6288815 Light scanner with cylindrical lenses 24 1999
 
CANON KABUSHIKI KAISHA (2)
7055968 Projection type display device 3 2005
* 2005/0151,940 Projection type display device 25 2005
 
RAKUTEN, INC. (1)
7040766 Illumination optical system and projection-type display apparatus 4 2004
* Cited By Examiner