US Patent No: 4,847,606

Number of patents in Portfolio can not be more than 2000

Control and display system

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A control system comprises a liquid crystal display panel; a light source; and a light detector. Light from the source is directed through at least a portion of the liquid crystal display panel to the light detector. A control circuit is provided for holding the liquid crystal display in generally opaque condition while preferably sequentially momentarily clarifying segments of the portion, whereby momentary, sequential, transversely spaced light beams are generated between the light source and the light detector. A timer and logic circuit is provided for correlating signals received from the light detector with generated, individual, spaced light beams that create the signals. Accordingly, occlusion of at least one of the individual light beams with an opaque member causes a specific characteristic response by the timer and logic circuit. In other words, when one of the individual light beams is occluded, the timer and logic circuit emits a characteristic signal which might activate a relay, send an instruction to a microprocessor, or cause some other action.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
OAK INDUSTRIES, INC.GLENVIEW, IL1
TECHNOMARKET OPPORTUNITY FUND, L.P.CHICAGO, IL, STATELESS0
TECHNOMARKET OPPORTUNITY FUND, L.P. C/O ROBERT I. SCHWIMMER, ESQ.CHICAGO, IL0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beiswenger, John L Strasburg, PA 23 530

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TEKTRONIX, INC. (6)
* 4,566,758 Rapid starting, high-speed liquid crystal variable optical retarder 63 1983
* 4,582,396 Field sequential color display system using optical retardation 168 1983
* 4,635,051 High-speed electro-optical light gate and field sequential full color display system incorporating same 68 1983
* 4,611,889 Field sequential liquid crystal display with enhanced brightness 69 1984
* 4,652,087 Method and apparatus for reducing optical cross talk in a liquid crystal optical switch 43 1984
* 4,670,744 Light reflecting three-dimensional display system 64 1985
 
FACEBOOK, INC. (1)
* 2003/0126,250 Systems for communicating current and future activity information among mobile internet users and methods therefor 14 2002
 
GENERAL ELECTRIC COMPANY (1)
* 4,329,581 Ambient light sensor touch switch system and method 18 1980
 
Kabushiki Kaisha Suwa Seikosha (1)
* 4,386,836 Electro-photographic printer 67 1980
 
Saint-Gobain Vitrage (1)
* 4,340,813 Switch panel with touch switches 28 1980
 
Other [Check patent profile for assignment information] (1)
* 4,387,367 Optical keyboard 23 1981
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
NEONODE INC. (9)
8,471,830 Scanning of a touch screen 1 2007
8,339,379 Light-based touch screen 3 2009
8,068,101 On a substrate formed or resting display arrangement 11 2010
8,692,806 On a substrate formed or resting display arrangement 0 2011
8,812,993 User interface 0 2011
8,674,966 ASIC controller for light-based touch screen 0 2012
8,416,217 Light-based finger gesture user interface 4 2012
8,810,551 Finger gesture user interface 0 2013
8,884,926 Light-based finger gesture user interface 0 2014
 
RAPT IP LIMITED (3)
8,426,799 Optical control system with feedback control 1 2009
8,350,831 Method and apparatus for detecting a multitouch event in an optical touch-sensitive device 6 2009
8,461,512 Optical control system with modulated emitters 0 2012
 
Technomarket, L.P. (3)
* 5,579,035 Liquid crystal display module 49 1991
* 5,381,388 Digital clock 5 1993
* 5,487,053 Digital clock 24 1994
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
* 5,196,836 Touch panel display 40 1992
* 8,643,608 Optical touch panel having SMT components as optical gates 0 2009
 
TECHNOMARKET OPPORTUNITY FUND, L.P. C/O ROBERT I. SCHWIMMER, ESQ. (2)
* 4,990,901 Liquid crystal display touch screen having electronics on one side 37 1988
* 4,951,035 Liquid crystal display touch screen with cross-aligned scanning 4 1988
 
UNION SWITCH & SIGNAL INC. (2)
* 5,812,102 Vital monitoring system for seven-segment display used in railroad applications 17 1997
* 6,097,302 System and method for monitoring a plural segment light-emitting display 22 1999
 
BAYER INNOVATION GMBH (1)
* 7,002,555 Display comprising touch panel 34 1999
 
INTECOLOR CORPORATION (1)
* 5,635,724 Method and apparatus for detecting the location of an object on a surface 22 1995
 
Neanode Inc. (1)
8,775,023 Light-based touch controls on a steering wheel and dashboard 0 2013
 
NEONODE SWEDEN B (1)
7,880,732 Touch screen for mobile telephone 13 2002
 
RAYDIUM SEMICONDUCTOR CORPORATION (1)
* 8,466,901 Optical touch system having integrated optical touch apparatus and panel apparatus and operating method thereof 0 2010
 
SMARTLIGHT LTD. (1)
* 6,011,528 Display device 7 1994
 
TOSHIBA GLOBAL COMMERCE SOLUTIONS HOLDINGS CORPORATION (1)
* 5,729,250 Front cover assembly for a touch sensitive device 95 1995
 
ZETTA RESEARCH AND DEVELOPMENT LLC - RPO SERIES (1)
7,421,167 Optical power distribution devices 1 2005
 
Other [Check patent profile for assignment information] (1)
D339230 Solar powered key chain display 10 1991
* Cited By Examiner