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)

  • OAK INDUSTRIES INC.;TECHNOMARKET OPPORTUNITY FUND, L.P.;TECHNOMARKET OPPORTUNITY FUND, L.P. C/O ROBERT I. SCHWIMMER, ESQ.

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beiswenger, John L Salem, WI 21 613

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (11)
* 4,329,581 Ambient light sensor touch switch system and method 18 1980
* 4,340,813 Switch panel with touch switches 48 1980
* 4,386,836 Electro-photographic printer 67 1980
* 4,387,367 Optical keyboard 24 1981
* 4,566,758 Rapid starting, high-speed liquid crystal variable optical retarder 65 1983
* 4,582,396 Field sequential color display system using optical retardation 184 1983
* 4,635,051 High-speed electro-optical light gate and field sequential full color display system incorporating same 71 1983
* 4,611,889 Field sequential liquid crystal display with enhanced brightness 71 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 67 1985
* 2003/0126,250 Systems for communicating current and future activity information among mobile internet users and methods therefor 86 2002
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (62)
* 4,990,901 Liquid crystal display touch screen having electronics on one side 42 1988
* 4,951,035 Liquid crystal display touch screen with cross-aligned scanning 4 1988
D339230 Solar powered key chain display 10 1991
* 5,579,035 Liquid crystal display module 74 1991
* 5,196,836 Touch panel display 41 1992
* 5,381,388 Digital clock 5 1993
* 5,487,053 Digital clock 28 1994
* 6,011,528 Display device 7 1994
* 5,729,250 Front cover assembly for a touch sensitive device 136 1995
* 5,635,724 Method and apparatus for detecting the location of an object on a surface 26 1995
* 5,812,102 Vital monitoring system for seven-segment display used in railroad applications 19 1997
* 7,002,555 Display comprising touch panel 35 1999
* 6,097,302 System and method for monitoring a plural segment light-emitting display 23 1999
7,880,732 Touch screen for mobile telephone 24 2002
* 2004/0263,482 On a substrate formed or resting display arrangement 45 2004
* 2005/0247,863 Photoelectric switch for use in sealed cases 2 2005
7,421,167 Optical power distribution devices 2 2005
* 2006/0188,198 Optical power distribution devices 4 2005
8,471,830 Scanning of a touch screen 2 2007
* 2011/0043,485 SCANNING OF A TOUCH SCREEN 17 2007
* 8,942,069 Wearable object such as a timepiece including means for triggering an electronic control function 1 2008
* 2010/0296,369 WEARABLE OBJECT SUCH AS A TIMEPIECE INCLUDING MEANS FOR TRIGGERING AN ELECTRONIC CONTROL FUNCTION 4 2008
8,339,379 Light-based touch screen 6 2009
* 2009/0189,878 LIGHT-BASED TOUCH SCREEN 40 2009
9,164,654 User interface for mobile computer unit 3 2009
* 2010/0017,872 USER INTERFACE FOR MOBILE COMPUTER UNIT 51 2009
* 8,643,608 Optical touch panel having SMT components as optical gates 0 2009
* 2009/0322,708 Optical Touch Panel Having SMT Components As Optical Gates 1 2009
8,426,799 Optical control system with feedback control 5 2009
8,350,831 Method and apparatus for detecting a multitouch event in an optical touch-sensitive device 14 2009
* 2011/0157,096 Method and Apparatus For Detecting A Multitouch Event In An Optical Touch-Sensitive Device 10 2009
* 2011/0157,095 Optical Control System With Feedback Control 2 2009
* 2010/0198,026 PORTABLE MEASURING APPARATUS AND MEASURING METHOD FOR DETECTING SUNBURN 0 2009
9,213,443 Optical touch screen systems using reflected light 1 2010
* 2010/0238,138 OPTICAL TOUCH SCREEN SYSTEMS USING REFLECTED LIGHT 58 2010
* 2010/0238,139 OPTICAL TOUCH SCREEN SYSTEMS USING WIDE LIGHT BEAMS 29 2010
* 8,466,901 Optical touch system having integrated optical touch apparatus and panel apparatus and operating method thereof 1 2010
* 2010/0321,344 OPTICAL TOUCH SYSTEM AND OPERATING METHOD THEREOF 4 2010
8,068,101 On a substrate formed or resting display arrangement 24 2010
* 2011/0007,032 ON A SUBSTRATE FORMED OR RESTING DISPLAY ARRANGEMENT 10 2010
8,692,806 On a substrate formed or resting display arrangement 0 2011
9,389,730 Light-based touch screen using elongated light guides 0 2011
* 9,052,771 Touch screen calibration and update methods 0 2011
* 2011/0210,946 LIGHT-BASED TOUCH SCREEN USING ELONGATED LIGHT GUIDES 26 2011
* 2011/0169,781 TOUCH SCREEN CALIBRATION AND UPDATE METHODS 13 2011
8,812,993 User interface 0 2011
9,052,777 Optical elements with alternating reflective lens facets 0 2012
8,674,966 ASIC controller for light-based touch screen 4 2012
8,416,217 Light-based finger gesture user interface 10 2012
8,461,512 Optical control system with modulated emitters 2 2012
8,810,551 Finger gesture user interface 0 2013
9,524,060 Low power operation of an optical touch-sensitive device for detecting multitouch events 0 2013
8,775,023 Light-based touch controls on a steering wheel and dashboard 3 2013
9,035,917 ASIC controller for light-based sensor 0 2014
9,086,762 Optical control system with modulated emitters 0 2014
9,335,864 Method and apparatus for detecting a multitouch event in an optical touch-sensitive device 0 2014
8,976,158 User interface for white goods and associated multi-channel proximity sensors 0 2014
8,918,252 Light-based touch controls on a steering wheel 0 2014
8,884,926 Light-based finger gesture user interface 0 2014
9,262,074 Finger gesture user interface 0 2014
9,389,710 Light-based controls on a toroidal steering wheel 0 2014
9,092,093 Steering wheel user interface 0 2015
* Cited By Examiner