US Patent No: 5,914,708

Number of patents in Portfolio can not be more than 2000

Computer input stylus method and apparatus

1 Status Updates

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A system comprising a conductive stylus used in conjunction with a capacitance sensitive touch pad, said system providing at least two different signals to an associated computer system. The stylus is a pen-like device having an actuable switch which when actuated substantially increases the capacitive disturbance caused by the conductive stylus on the touch pad. Before actuation, the stylus creates a capacitive disturbance sufficient for circuitry in the touch pad to measure as crossing a first predefined capacitive disturbance threshold when the foam covered conductive stylus tip is brought in contact with the surface of the touch pad. When the switch is actuated, the capacitive disturbance measured by the touch pad increases sufficient to cross a second predefined capacitive disturbance threshold. An associated computer program for drawing on a computer display places a cursor on the display when the first threshold is crossed. The computer program begins drawing on the display beginning at the cursor location when the switch is actuated causing the second threshold to be crossed. Placing a conductive foam cover over the conductive stylus tip results in the measured capacitive disturbance being amplified to thereby increase the magnitude of the capacitive disturbance of the stylus.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
CIRQUE CORPORATIONSALT LAKE CITY, UT50

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Donohue, Tom Provo, UT 1 192
Gerpheide, George E Salt Lake City, UT 16 2422
LaGrange, George W Salt Lake City, UT 1 192
Layton, Mike Salt Lake City, UT 1 192
Woolley, Richard D Orem, UT 30 395

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 5,453,759 Pointing device for communication with computer systems 49 1994
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 5,410,334 Switch for pen-down sensing in electronic styli 20 1990
 
CALCOMP INC. (1)
* 5,357,062 Pressure sensing apparatus for digitizer pen tip 29 1993
 
HEWLETT-PACKARD COMPANY (1)
* 4,883,926 Stylus switch 49 1988
 
3M INNOVATIVE PROPERTIES COMPANY (1)
* 5,365,461 Position sensing computer input device 115 1992
 
U.S. PHILIPS CORPORATION (1)
* 5,461,204 Segmented-core inductance in stylus for EM-graphical tablet 30 1994
 
QUANTEL LIMITED (1)
* 4,580,007 Stylus devices responsive to pressure changes for use in videographic and like apparatus 16 1984
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 5,365,598 Handwritten keyboardless entry computer system 58 1992
 
BRITISH TECHNOLOGY GROUP LIMITED (1)
* 5,107,541 Method and apparatus for capturing information in drawing or writing 60 1990
 
EINSTRUCTION GTCO HOLDINGS, LLC (1)
* 5,384,688 Three-dimensional circuits for digitizer and pen-based computer system pen cursors 14 1993
 
TV INTERACTIVE DATE CORPORATION (1)
* 5,459,489 Hand held electronic remote control device 118 1993
 
FUJIKURA RUBBER LTD (1)
* 5,290,972 Stylus pen 33 1993
 
GTCO CORPORATION (1)
* 5,004,872 Digitizer tablet with pressure stylus 15 1989
 
SYNAPTICS INCORPORATED (1)
* 5,488,204 Paintbrush stylus for capacitive touch sensor pad 795 1994
 
Bell Telephone Laboratories, Incorporated (1)
* 4,644,101 Pressure-responsive position sensor 64 1985
 
SUMMAGRAPHICS CORPORATION (1)
* 4,786,764 Digitizer stylus with pressure transducer 46 1987
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (6)
* 2005/0083,316 Stylus input device utilizing a permanent magnet 6 2004
* 2009/0322,685 Computer input device using touch switch 6 2006
* 2008/0170,049 POINTING DEVICE WITH INTEGRATED AUDIO INPUT AND ASSOCIATED METHODS 5 2007
* 2008/0283,310 SYSTEM FOR USING A GROUND ELECTRODE TO AMPLIFY SIGNALS ON A CAPACITANCE SENSITIVE TOUCHPAD 2 2008
* 8,976,127 Multi-point touch screen operating tool 2 2010
* 2011/0298,742 MULTI-POINT TOUCH SCREEN OPERATING TOOL 4 2010
 
CYPRESS SEMICONDUCTOR CORPORATION (72)
8,149,048 Apparatus and method for programmable power management in a programmable analog circuit block 4 2001
8,176,296 Programmable microcontroller architecture 7 2001
8,160,864 In-circuit emulator and pod synchronized boot 0 2001
8,103,496 Breakpoint control in an in-circuit emulation system 6 2001
7,765,095 Conditional branching in an in-circuit emulation system 4 2001
8,078,970 Graphical user interface with user-selectable list-box 4 2001
8,069,405 User interface for efficiently browsing an electronic document using data-driven tabs 4 2001
7,844,437 System and method for performing next placements and pruning of disallowed placements for programming an integrated circuit 1 2001
7,774,190 Sleep and stall in an in-circuit emulation system 4 2001
7,770,113 System and method for dynamically generating a configuration datasheet 5 2001
8,103,497 External interface for event architecture 5 2002
7,761,845 Method for parameterizing a user module 3 2002
8,533,677 Graphical user interface for dynamically reconfiguring a programmable device 1 2002
8,089,461 Touch wake for electronic devices 2 2005
8,286,125 Model for a hardware device-independent method of defining embedded firmware for programmable systems 2 2005
8,069,436 Providing hardware independence to automate code generation of processing device firmware 5 2005
7,307,485 Capacitance sensor using relaxation oscillators 117 2005
7,312,616 Successive approximate capacitance measurement circuit 70 2006
* 2007/0176,903 Capacitive touch sensor button activation 45 2006
7,721,609 Method and apparatus for sensing the force with which a button is pressed 3 2006
8,537,121 Multi-function slider in touchpad 3 2006
8,089,472 Bidirectional slider with delete function 2 2006
8,040,321 Touch-sensor with shared capacitive sensors 28 2006
7,253,643 Uninterrupted radial capacitive sense interface 84 2006
* 2008/0024,455 Technique for increasing the sensitivity of capacitive sensor arrays 53 2006
8,089,288 Charge accumulation capacitance sensor with linear transfer characteristic 19 2006
8,085,067 Differential-to-single ended signal converter circuit and method 6 2006
8,058,937 Setting a discharge rate and a charge rate of a relaxation oscillator circuit 13 2007
8,067,948 Input/output multiplexer bus 15 2007
8,040,142 Touch detection techniques for capacitive touch sense systems 23 2007
7,825,688 Programmable microcontroller architecture(mixed analog/digital) 5 2007
8,144,126 Reducing sleep current in a capacitance sensing system 15 2007
8,069,428 Techniques for generating microcontroller configuration information 14 2007
8,049,569 Circuit and method for improving the accuracy of a crystal-less oscillator having dual-frequency modes 7 2007
8,092,083 Temperature sensor with digital bandgap 3 2007
7,884,621 Successive approximate capacitance measurement circuit 3 2007
8,402,313 Reconfigurable testing system and method 5 2007
8,026,739 System level interconnect with programmable switching 27 2007
7,737,724 Universal digital block interconnection and channel routing 12 2007
8,085,100 Poly-phase frequency synthesis oscillator 1 2008
8,525,798 Touch sensing 2 2008
8,078,894 Power management architecture, method and configuration system 12 2008
8,487,912 Capacitive sense touch device with hysteresis threshold 3 2008
8,040,266 Programmable sigma-delta analog-to-digital converter 3 2008
8,516,025 Clock driven dynamic datapath chaining 2 2008
8,130,025 Numerical band gap 3 2008
8,370,791 System and method for performing next placements and pruning of disallowed placements for programming an integrated circuit 1 2008
8,169,238 Capacitance to frequency converter 16 2008
8,089,289 Capacitive field sensor with sigma-delta modulator 17 2008
8,086,417 Normalizing capacitive sensor array signals 4 2008
8,120,408 Voltage controlled oscillator delay cell and method 1 2008
8,321,174 System and method to measure capacitance of capacitive sensor array 5 2008
8,570,053 Capacitive field sensor with sigma-delta modulator 13 2009
9,104,273 Multi-touch sensing method 0 2009
8,358,150 Programmable microcontroller architecture(mixed analog/digital) 5 2010
8,493,351 Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device 0 2011
8,248,084 Touch detection techniques for capacitive touch sense systems 7 2011
9,154,160 Capacitance to code converter with sigma-delta modulator 0 2011
8,976,124 Reducing sleep current in a capacitance sensing system 1 2011
8,482,313 Universal digital block interconnection and channel routing 2 2011
8,315,832 Normalizing capacitive sensor array signals 5 2011
8,555,032 Microcontroller programmable system on a chip with programmable interconnect 3 2011
8,499,270 Configuration of programmable IC design elements 3 2011
8,909,960 Power management architecture, method and configuration system 0 2011
8,527,949 Graphical user interface for dynamically reconfiguring a programmable device 8 2011
8,476,928 System level interconnect with programmable switching 2 2011
* 8,536,902 Capacitance to frequency converter 0 2011
8,793,635 Techniques for generating microcontroller configuration information 0 2011
8,717,042 Input/output multiplexer bus 0 2011
8,736,303 PSOC architecture 0 2011
9,166,621 Capacitance to code converter with sigma-delta modulator 0 2013
9,152,284 Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device 0 2013
 
SONY CORPORATION (1)
* 8,477,097 Method and system for controlling a display device 2 2006
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 2007/0085,824 Remote control device, image processing apparatus having the same and method of driving the same 2 2006
 
PALMONE, INC. (1)
6,865,076 Electronically-enabled housing apparatus for a computing device 11 2002
 
APPLE INC. (4)
8,922,530 Communicating stylus 7 2010
* 2011/0162,894 STYLUS FOR TOUCH SENSING DEVICES 8 2010
* 2011/0164,000 COMMUNICATING STYLUS 8 2010
RE45559 Portable computers 0 2013
 
GOOGLE TECHNOLOGY HOLDINGS LLC (3)
* 6,014,552 Low profile eject stylus 57 1997
* 9,110,534 Stylus devices having variable electrical characteristics for capacitive touchscreens 0 2010
* 2011/0273,376 Stylus Devices Having Variable Electrical Characteristics for Capacitive Touchscreens 7 2010
 
Sony Corporation/Sony Electronics (1)
* 2006/0139,327 Method and system for controlling a display device 27 2006
 
ELAN MICROELECTRONICS CORPORATION (1)
* 2012/0262,429 PEN FOR CAPACITIVE TOUCH INPUT 0 2012
 
CANON KABUSHIKI KAISHA (1)
* 6,384,814 Input pen 5 1999
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (11)
6,388,870 Housing for a handheld computer 24 1999
6,388,877 Handheld computer with open accessory slot 169 1999
6,266,240 Encasement for a handheld computer 85 2000
6,356,442 Electronically-enabled encasement for a handheld computer 39 2000
6,535,199 Smart cover for a handheld computer 48 2000
6,532,148 Mechanism for attaching accessory devices to handheld computers 25 2000
7,061,762 Housing for a computing apparatus 22 2002
* 2007/0035,522 Lighting and usability features for key structures and keypads on computing devices 4 2005
* 2007/0081,303 Recess housing feature for computing devices 25 2005
8,804,332 Handheld computer 1 2007
9,367,083 Computing device housing 0 2014
 
BLACKBERRY LIMITED (1)
8,978,487 Capacitive force sensor with magnetic spring 1 2012
 
SONGTAK TECHNOLOGY CO., LTD. (6)
* 8,355,008 Touch component for protecting capacitive panel 2 2007
* 2010/0214,251 Touch component for protecting capacitive panel 0 2007
* 2010/0214,252 Touch panel component for capacitive panel 6 2007
* 2012/0249,488 Stylus structure for touch panel 0 2011
* 8,842,099 Touch pen structure 0 2012
* 2013/0076,701 TOUCH PEN STRUCTURE 3 2012
 
60251 BRITISH COLUMBIA LTD. (1)
* 2004/0021,691 Method, system and media for entering data in a personal computing device 147 2003
 
POA SANA LIQUIDATING TRUST (1)
* 2006/0001,654 Apparatus and method for performing data entry with light based touch screen displays 55 2004
 
BELKIN INTERNATIONAL, INC. (1)
* 2012/0044,214 ELECTRONIC DEVICE ACCESSORY AND METHOD OF PROVIDING THE SAME 0 2011
 
INTEL CORPORATION (3)
* 7,233,321 Pointing device with integrated audio input 10 1998
7,656,397 Pointing device with integrated audio input and associated methods 0 2007
7,804,494 Pointing device with integrated audio input and associated methods 0 2010
 
HTC CORPORATION (1)
9,310,899 Stylus having head being rigid body and electronic device using the same 0 2014
 
NVIDIA CORPORATION (1)
* 2014/0306,928 STYLUS SIGNALING FOR CAPACITIVE TOUCH SCREEN PANELS 0 2014
 
PARADE TECHNOLOGIES, LTD. (7)
8,358,142 Methods and circuits for measuring mutual and self capacitance 18 2009
8,866,500 Multi-functional capacitance sensing circuit with a current conveyor 3 2009
8,487,639 Receive demodulator for capacitive sensing 4 2009
9,268,441 Active integrator for a capacitive sense array 0 2011
8,570,052 Methods and circuits for measuring mutual and self capacitance 10 2012
8,692,563 Methods and circuits for measuring mutual and self capacitance 11 2012
8,575,947 Receive demodulator for capacitive sensing 0 2013
 
MIMIO, LLC (1)
* 6,111,565 Stylus for use with transcription system 49 1999
 
LOGITECH EUROPE S.A. (3)
9,367,185 Method and system for discriminating stylus and touch interactions 0 2013
9,367,186 Method and system for discriminating stylus and touch interactions 0 2013
9,158,393 Active stylus for touch sensing applications 0 2013
 
MOTION COMPUTING, INC. (1)
* 2006/0158,440 Active dynamic tactile feedback stylus 4 2005
 
AMAZON TECHNOLOGIES, INC. (2)
* 9,195,351 Capacitive stylus 0 2012
* 9,239,639 Protecting stylus force sensor from excess force 0 2014
 
Dagi Corporation Ltd. (2)
* 8,384,697 Stylus device adapted for use with a capacitive touch panel 2 2010
* 2010/0225,614 STYLUS DEVICE ADAPTED FOR USE WITH A CAPACITIVE TOUCH PANEL 5 2010
 
DAV (2)
* 8,058,577 Touch-sensitive surface activation device for the controls of a vehicle 2 2005
* 2008/0289,944 Touch-Sensitive Surface Activation Device for the Controls of a Vehicle 0 2005
 
IMMERSION CORPORATION (26)
7,265,750 Haptic feedback stylus and other devices 50 2002
* 2002/0097,223 Haptic feedback stylus and othef devices 10 2002
7,148,875 Haptic feedback for touchpads and other touch controls 136 2002
* 7,728,820 Haptic feedback for touchpads and other touch controls 58 2003
8,830,161 Methods and systems for providing a virtual touch haptic effect to handheld communication devices 1 2003
8,803,795 Haptic communication devices 1 2003
8,316,166 Haptic messaging in handheld communication devices 4 2003
8,059,088 Methods and systems for providing haptic messaging to handheld communication devices 5 2005
7,777,716 Haptic feedback for touchpads and other touch controls 3 2006
* 2006/0119,589 Haptic feedback for touchpads and other touch controls 21 2006
7,592,999 Haptic feedback for touchpads and other touch controls 77 2006
* 2006/0187,215 Haptic feedback for touchpads and other touch controls 34 2006
7,602,384 Haptic feedback touchpad 37 2006
7,944,435 Haptic feedback for touchpads and other touch controls 41 2006
* 2007/0013,677 Haptic feedback for touchpads and other touch controls 25 2006
7,768,504 Haptic feedback for touchpads and other touch controls 4 2007
* 2007/0229,483 Haptic feedback for touchpads and other touch controls 1 2007
8,188,981 Haptic interface for touch screen embodiments 5 2007
8,059,104 Haptic interface for touch screen embodiments 41 2007
8,031,181 Haptic feedback for touchpads and other touch controls 60 2007
8,063,893 Haptic feedback for touchpads and other touch controls 40 2007
8,049,734 Haptic feedback for touchpads and other touch control 38 2007
7,982,720 Haptic feedback for touchpads and other touch controls 66 2007
7,978,183 Haptic feedback for touchpads and other touch controls 42 2007
8,059,105 Haptic feedback for touchpads and other touch controls 66 2008
9,280,205 Haptic feedback for touchpads and other touch controls 0 2013
 
MICROSOFT TECHNOLOGY LICENSING, LLC (6)
* 7,511,703 Using size and shape of a physical object to manipulate output in an interactive display application 14 2004
* 2006/0007,123 Using size and shape of a physical object to manipulate output in an interactive display application 23 2004
7,743,348 Using physical objects to adjust attributes of an interactive display application 103 2004
7,925,996 Method and system for providing multiple input connecting user interface 44 2004
* 2006/0112,335 Method and system for providing multiple input connecting user interface 111 2004
* 2006/0262,105 Pen-centric polyline drawing tool 14 2005
 
ERGODYNE, INC. (1)
* 7,293,231 Data entry for personal computing devices 123 2000
 
SILVERBROOK RESEARCH PTY LTD (4)
* 7,091,960 Code sensor attachment for pen 17 2000
7,649,523 Method of estimating position of writing nib relative to an optical sensor 1 2006
8,319,745 Method of estimating nib position using images captured at different pen rotations 1 2009
* 2010/0101,873 METHOD OF ESTIMATING NIB POSITION USING IMAGES CAPTURED AT DIFFERENT PEN ROTATIONS 3 2009
 
WACOM CO., LTD. (15)
* 6,801,192 Pen-shaped coordinate pointing device 11 2001
* 2002/0070,927 Pen-shaped coordinate pointing device 7 2001
* 6,727,439 Pressure sensitive pen 12 2002
* 6,937,231 Pen-shaped coordinate pointing device 4 2002
* 2003/0122,795 Pen-shaped coordinate pointing device 9 2002
8,482,545 Combination touch and transducer input system and method 5 2009
* 2010/0085,325 COMBINATION TOUCH AND TRANSDUCER INPUT SYSTEM AND METHOD 52 2009
* 2012/0146,958 POSITION INDICATOR 7 2011
* 8,199,132 Position indicator 6 2011
9,182,835 Combination touch and transducer input system and method 0 2013
* D744486 Nib for electronic pen 0 2013
9,182,836 Combination touch and transducer input system and method 0 2014
9,081,425 Combination touch and transducer input system and method 0 2014
9,304,623 Combination touch and transducer input system and method 0 2014
9,128,542 Combination touch and transducer input system and method 0 2014
 
HRL LABORATORIES, LLC (1)
6,456,991 Classification method and apparatus based on boosting and pruning of multiple classifiers 50 1999
 
SP Controls, Inc. (1)
* 2011/0304,577 CAPACITIVE TOUCH SCREEN STYLUS 100 2010
 
CIRQUE CORPORATION (4)
* 2003/0095,115 Stylus input device utilizing a permanent magnet 25 2002
7,283,127 Stylus input device utilizing a permanent magnet 7 2004
7,145,555 Stylus input device utilizing a permanent magnet 26 2004
* 2005/0156,912 Tethered stylyus for use with a capacitance-sensitive touchpad 9 2004
 
EMPIRE TECHNOLOGY DEVELOPMENT LLC (1)
* 2013/0106,772 DIFFERENTIATING INPUTS OF A DISPLAY DEVICE 1 2011
 
SILICON INTEGRATED SYSTEMS CORP. (2)
* 8,514,189 Touch detecting device and method thereof 7 2010
* 2011/0031,042 TOUCH DETECTING DEVICE AND METHOD THEREOF 8 2010
 
QUALCOMM INCORPORATED (17)
6,788,285 Portable computer with removable input mechanism 20 2001
9,142,369 Stack assembly for implementing keypads on mobile computing devices 0 2005
7,623,118 Actuation mechanism for use with keyboards on mobile computing devices 8 2005
7,525,534 Small form-factor keypad for mobile computing devices 15 2005
7,511,700 Device and technique for assigning different inputs to keys on a keypad 23 2005
7,294,802 Lighting and usability features for key structures and keypads on computing devices 6 2005
7,275,836 Lighting and usability features for key structures and keypads on computing devices 3 2005
8,989,822 Keypad assembly for use on a contoured surface of a mobile computing device 0 2006
7,525,053 Enhanced key structure with combined keycap for a mobile computing device 3 2007
* 2008/0060,928 ENHANCED KEY STRUCTURE WITH COMBINED KEYCAP FOR A MOBILE COMPUTING DEVICE 9 2007
7,708,416 Lighting and usability features for key structures and keypads on computing devices 2 2007
8,270,158 Housing construction for mobile computing device 1 2007
* 2009/0059,495 HOUSING CONSTRUCTION FOR MOBILE COMPUTING DEVICE 9 2007
D613743 Mobile computing device 4 2008
8,373,663 Small form-factor keypad for mobile computing devices 1 2009
* 2011/0193,787 INPUT MECHANISM FOR PROVIDING DYNAMICALLY PROTRUDING SURFACES FOR USER INTERACTION 86 2010
8,350,728 Keyboard with integrated and numeric keypad 1 2010
 
SHARP KABUSHIKI KAISHA (1)
* 2006/0012,570 Protective cover of sensor surface that enables pointing operation 3 2005
 
3M INNOVATIVE PROPERTIES COMPANY (19)
9,201,556 Touch location sensing system and method employing sensor data fitting to a predefined curve 0 2006
* 2008/0106,520 TOUCH LOCATION SENSING SYSTEM AND METHOD EMPLOYING SENSOR DATA FITTING TO A PREDEFINED CURVE 36 2006
8,207,944 Capacitance measuring circuit and method 7 2006
* 2008/0142,281 CAPACITANCE MEASURING CIRCUIT AND METHOD 42 2006
8,243,049 Untethered stylus employing low current power converter 7 2006
8,134,542 Untethered stylus employing separate communication and power channels 5 2006
8,040,329 Frequency control circuit for tuning a resonant circuit of an untethered device 2 2006
7,956,851 Self-tuning drive source employing input impedance phase detection 3 2006
7,868,876 Self-tuning drive source employing input impedance phase detection 0 2006
* 2008/0150,918 UNTETHERED STYLUS EMPLOYING SEPARATE COMMUNICATION AND POWER CHANNELS 24 2006
* 2008/0150,550 SELF-TUNING DRIVE SOURCE EMPLOYING INPUT IMPEDANCE PHASE DETECTION 13 2006
* 8,089,474 Location sensing system and method employing adaptive drive signal adjustment 4 2006
8,040,330 Untethered stylus empolying multiple reference frequency communication 1 2006
7,787,259 Magnetic shield for use in a location sensing system 12 2006
* 2008/0158,165 LOCATION SENSING SYSTEM AND METHOD EMPLOYING ADAPTIVE DRIVE SIGNAL ADJUSTMENT 31 2006
7,916,501 Magnetic shield for use in a location sensing system 1 2010
* 2010/0188,832 MAGNETIC SHIELD FOR USE IN A LOCATION SENSING SYSTEM 11 2010
9,389,724 Touch sensitive device with stylus support 0 2010
8,159,474 Untethered stylus employing multiple reference frequency communication 5 2011
 
Enermax Technology Corporation (1)
* 2008/0266,267 Pen for touch pad of a laptop 3 2007
 
PALM, INC. (1)
6,356,443 Handheld computer configured for attachment with an external device 19 2000
 
602531 BRITISH COLUMBIA LTD. (9)
8,552,984 Method, system, apparatus and computer-readable media for directing input associated with keyboard-type device 5 2005
* 2006/0152,496 Method, system, apparatus and computer-readable media for directing input associated with keyboard-type device 36 2005
7,716,579 Data entry for personal computing devices 39 2005
7,681,124 Data entry for personal computing devices 3 2005
7,921,361 Data entry for personal computing devices 36 2007
* 2008/0088,599 DATA ENTRY FOR PERSONAL COMPUTING DEVICES 11 2007
* 2008/0030,481 DATA ENTRY FOR PERSONAL COMPUTING DEVICES 5 2007
* 2010/0115,402 SYSTEM FOR DATA ENTRY USING MULTI-FUNCTION KEYS 14 2008
* 2011/0010,655 METHOD, SYSTEM AND MEDIA FOR ENTERING DATA IN A PERSONAL COMPUTING DEVICE 19 2010
 
ADKINS CREATIVE SOLUTIONS LLC (1)
* 2008/0297,491 Stylus for a touch-screen device 6 2007
 
ANALOG DEVICES, INC. (2)
8,050,876 Automatic environmental compensation of capacitance based proximity sensors 22 2006
* 2007/0032,967 Automatic environmental compensation of capacitance based proximity sensors 12 2006
 
TOUCHSCREEN GESTURES, LLC (2)
6,891,531 Sensing an object with a plurality of conductors 20 2002
* 2004/0003,949 Sensing an object with a plurality of conductors 5 2002
 
SYNAPTICS INCORPORATED (1)
* 8,125,469 Passive stylus for capacitive sensors 6 2008
 
RPX CORPORATION (1)
7,893,724 Method and circuit for rapid alignment of signals 2 2007
 
GLT TECHNOVATIONS, LLC (1)
* 2012/0086,664 MULTIFUNCTIONAL WRITING APPARATUS WITH CAPACITIVE TOUCH SCREEN STYLUS 7 2010
 
HYPERCOM CORPORATION (2)
* 8,212,795 Payment terminal stylus with touch screen contact detection 3 2008
* 2009/0289,922 PAYMENT TERMINAL STYLUS WITH TOUCH SCREEN CONTACT DETECTION 36 2008
 
Elckon Limited (1)
8,063,892 Haptic interface for touch screen embodiments 39 2007
 
EGALAX_EMPIA TECHNOLOGY INC. (2)
* 9,081,440 Device and method for writing on capacitive touch sensor by stylus with conductive head and insulating body 0 2011
9,069,411 Capacitive touch screen 0 2014
* Cited By Examiner