US Patent No: 5,528,318

Number of patents in Portfolio can not be more than 2000

Single panel color projection video display having improved scanning

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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, NY987

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Janssen, Peter J Scarborough, NY 76 792

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Jersey Nuclear-Avco Isotopes, Inc. (1)
4,319,807 Rotating optical frequency chirp device 23 1980
 
Messerschmitt-Bolkow-Blohm GmbH (1)
4,940,312 Scanning prism 5 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
TEXAS INSTRUMENTS INCORPORATED (8)
7,052,150 Rod integrator 10 2000
6,967,759 Pulse width modulation sequence generation 2 2002
6,987,597 Pulse width modulation sequence generation 5 2004
6,898,019 Pulse width modulation sequence generation 2 2004
7,066,605 Color recapture for display systems 5 2004
7,118,226 Sequential color recapture for image display systems 5 2005
7,184,213 Rod integrators for light recycling 2 2006
7,252,391 Method of producing an image 3 2006
 
HITACHI, LTD. (3)
6,987,546 Projection type image display apparatus 4 2002
6,798,580 Projection type image display apparatus 2 2002
7,170,567 Projection type image display apparatus 5 2003
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (3)
5,892,623 Mutli-color-band light source 26 1997
5,845,981 Multi-color-band scrolling across single-panel light valve 54 1997
6,288,815 Light scanner with cylindrical lenses 24 1999
 
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL (3)
8,152,305 Methods, systems, and computer program products for full spectrum projection 1 2005
8,490,469 Methods and systems for multiforce high throughput screening 0 2008
8,586,368 Methods and systems for using actuated surface-attached posts for assessing biofluid rheology 0 2010
 
PANASONIC CORPORATION (2)
7,006,163 Illuminating device and projector using it and built-in display unit 4 2001
7,483,086 Illumination optical system, projection video system using the same, and integral-type video display 0 2007
 
SONY ELECTRONICS INC. (2)
6,867,813 Flat moldable HDTV display 0 2001
7,154,554 Flat moldable HDTV display 0 2005
 
ADVANCED PERIPHERALS TECHNOLOGIES, INC., A JAPANESE CORPORATION (1)
6,457,833 Digital micro mirror device and single-panel color projector using it 18 2000
 
CANON KABUSHIKI KAISHA (1)
7,055,968 Projection type display device 3 2005
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
6,624,756 Liquid crystal light valve system with automatic color balance correction 11 1999
 
IBM JAPAN, LTD. (1)
6,219,110 Single-panel color projector 24 1999
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
6,803,902 Variable rate row addressing method 1 2002
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,212,254 Illumination optical system, projection video system using the same, and integral-type video display 0 2005
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
7,040,766 Illumination optical system and projection-type display apparatus 4 2004
 
SEIKO EPSON CORPORATION (1)
7,494,225 Projector including an illumination device with a light cut-off member and rotating prism 1 2006
 
U.S. Philips Corporation (1)
5,684,504 Display device 12 1995
 
Other [Check patent profile for assignment information] (1)
6,356,700 Efficient light engine systems, components and methods of manufacture 112 1999