Inventor

Christoph Horst Krah

Inventor

Los Altos, CA, US

Overview

2001–2021

Patent span

Physics

Primary field (CPC G)

Patents· 155 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary

G06FElectric digital data processing54%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein10%

G09GArrangements or circuits for control of indicating devices using static means to present variable information7%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use4%

H03KPulse technique4%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications3%

H10KOrganic electric solid-state devices2%

G01BMeasuring length, thickness or similar linear dimensions2%

G01CMeasuring distances, levels or bearings2%

G01SRadio direction-finding2%

PatentTitleYear

11,132,097Channel scan logic2021 11,106,308Touch detection using multiple simultaneous stimulation signals2021 11,086,463Multi modal touch controller2021 11,079,878Noise mitigation touch sensing circuit2021 11,073,927Touch sensing utilizing integrated micro circuitry2021 11,016,616Multi-domain touch sensing with touch and display circuitry operable in guarded power domain2021 10,990,221Multi-power domain touch sensing2021 10,976,846Touch screen liquid crystal display2021 10,969,917Auto scanning for multiple frequency stimulation multi-touch sensor panels2021 10,915,207Multipoint touch surface controller2021 10,852,894Touch sensor panel with multi-power domain chip configuration2020 10,845,930Common mode noise mitigation for integrated touch screens2020 10,795,488Flexible self-capacitance and mutual capacitance touch sensing system architecture2020 10,747,355Touch detection using multiple simultaneous stimulation signals2020 10,747,296Power management for touch controller2020 10,712,866Multi-touch auto scanning2020 10,664,113Coarse scan and targeted active mode scan for touch and stylus2020 10,664,095Channel scan logic2020 10,541,280OLED based touch sensing and user identification2020 10,488,992Multi-chip touch architecture for scalability2019 10,459,587Touch sensor panel with multi-power domain chip configuration2019 10,402,025Concurrent touch and negative pixel scan2019 10,282,026Measuring body capacitance effect in touch sensitive device2019 10,222,854Power management for touch controller2019 10,191,576Touch screen liquid crystal display2019 10,175,830Systems and methods for pre-charging a display panel2019 10,156,940Panel mismatch compensation for touch enabled displays2018 10,152,187Electronic device with an integrated touch sensing and force sensing device2018 10,146,359Common electrode auto-compensation method2018 10,139,890Automatic low noise frequency selection2018 10,120,520Touch sensor panel with multi-power domain chip configuration2018 10,061,449Coarse scan and targeted active mode scan for touch and stylus2018 10,061,444Self capacitance touch sensing2018 10,042,459Dynamic voltage generation for touch-enabled displays2018 10,042,472Single-chip multi-stimulus sensor controller2018 10,042,476Channel scan architecture for multiple stimulus multi-touch sensor panels2018 10,031,609Channel scan logic2018 9,990,084Touch detection using multiple simultaneous stimulation signals2018 9,965,100Scan sequence generator2018 9,958,960Three-dimensional imaging and display system2018 9,935,631Methods and apparatuses using control indicators for data processing systems2018 9,851,849Touch device communication2017 9,830,036Proximity and multi-touch sensor detection and demodulation2017 9,766,716'Three-dimensional imaging and display system'2017 9,760,195'Power management for integrated touch screens'2017 9,746,967'Concurrent touch and negative pixel scan'2017 9,715,306'Single chip multi-stimulus sensor controller'2017 9,690,408'Electronic device with an integrated touch sensing and force sensing device'2017 9,582,105'Input device for touch sensitive devices'2017 9,582,104'Scan sequence generator'2017 9,582,114'Display to touch crosstalk compensation'2017 9,575,610'Touch screen liquid crystal display'2017 9,547,394'Multipoint touch surface controller'2017 9,529,415'Power management for touch controller'2016 9,483,141'Single-chip multi-stimulus sensor controller'2016 9,444,453'Measuring body capacitance effect in touch sensitive device'2016 9,436,315'Noise rejection circuit for touch sensitive display'2016 9,430,087'Touch detection using multiple simultaneous stimulation signals'2016 9,383,843'Multi-touch auto scanning'2016 9,367,158'Proximity and multi-touch sensor detection and demodulation'2016 9,348,451'Channel scan architecture for multiple stimulus multi-touch sensor panels'2016 9,310,917'Dynamic cross-talk mitigation for integrated touch screens'2016 9,310,931'Dynamic cross-talk mitigation for integrated touch screens'2016 9,310,923'Input device for touch sensitive devices'2016 9,310,916'Display to touch crosstalk compensation'2016 9,300,951'Autostereoscopic projection display device with directional control based on user\'s location'2016 9,268,429'Integrated display and touch screen'2016 9,268,450'Scan sequence generator'2016 9,262,029'Multipoint touch surface controller'2016 9,250,734'Proximity and multi-touch sensor detection and demodulation'2016 9,244,561'Touch screen liquid crystal display'2016 9,189,048'Circuit having a low power mode'2015 9,176,604'Stylus device'2015 9,164,606'Dynamic voltage generation for touch-enabled displays'2015 9,098,286'Power management for touch controller'2015 9,092,086'Touch detection using multiple simultaneous frequencies'2015 9,086,750'Phase compensation for multi-stimulus controller'2015 9,069,408'Single-chip multi-stimulus sensor controller'2015 9,063,601'Channel scan logic'2015 9,036,650'Automatic low noise frequency selection'2015 9,013,442'SAR ADC with dynamic input scaling and offset adjustment'2015 8,988,390'Frequency agile touch processing'2015 8,988,384'Force sensor interface for touch controller'2015 8,970,501'Proximity and multi-touch sensor detection and demodulation'2015 8,970,506'Power management for touch controller'2015 8,922,519'Scan sequence generator'2014 8,913,040'Downsampling data for crosstalk compensation'2014 8,847,919'Interactive holographic display device'2014 8,836,656'Channel scan logic'2014 8,823,660'Multi-touch auto scanning'2014 8,823,651'Hybrid low power computer mouse'2014 8,816,984'Multipoint touch surface controller'2014 8,810,537'Quadrature demodulation for touch sensitive devices'2014 8,791,920'Phase compensation for multi-stimulus controller'2014 8,780,332'Three-dimensional imaging and display system'2014 8,754,867'Touch detection using multiple simultaneous frequencies'2014 8,743,345'Three-dimensional imaging and display system'2014 8,743,062'Noise reduction for touch controller'2014 8,664,548'Touch controller with improved diagnostics calibration and communications support'2014 8,659,568'Scan sequence generator'2014 8,654,083'Touch screen liquid crystal display'2014 8,593,423'Single chip multi-stimulus sensor controller'2013 8,592,697'Single-chip multi-stimulus sensor controller'2013 8,552,989'Integrated display and touch screen'2013 8,542,208'Multi-touch auto scanning'2013 8,493,331'Touch detection using multiple simultaneous frequencies'2013 8,493,330'Individual channel phase delay scheme'2013 8,471,837'Channel scan logic'2013 8,451,244'Segmented Vcom '2013 8,432,364'Charge recycling for multi-touch controllers'2013 8,432,371'Touch screen liquid crystal display'2013 8,390,588'Channel scan logic'2013 8,384,518'Illuminable latch'2013 8,363,021'Method to compensate for the frequency dependence of sense signal preprocessing'2013 8,310,472'Channel scan logic'2012 8,279,176'Mouse with improved input mechanisms using touch sensors'2012 8,279,180'Multipoint touch surface controller'2012 8,259,078'Touch screen liquid crystal display'2012 8,243,027'Touch screen liquid crystal display'2012 8,237,667'Phase compensation for multi-stimulus controller'2012 8,232,970'Scan sequence generator'2012 8,125,456'Multi-touch auto scanning'2012 8,120,591'Detection of low noise frequencies for multiple frequency sensor panel stimulation'2012 8,094,128'Channel scan logic'2012 8,077,147'Mouse with optical sensing surface'2011 8,054,299'Digital controller for a true multi-point touch surface useable in a computer system'2011 8,035,622'SAR ADC with dynamic input scaling and offset adjustment'2011 8,035,481'Illuminable latch'2011 8,031,094'Touch controller with improved analog front end'2011 8,018,579'Three-dimensional imaging and display system'2011 7,986,313'Analog boundary scanning based on stray capacitance'2011 7,986,193'Noise reduction within an electronic device using automatic frequency modulation'2011 7,940,026'Methods and apparatus for charging a battery in a peripheral device'2011 7,936,348'Methods and apparatuses using control indicators for data processing systems'2011 7,920,134'Periodic sensor autocalibration and emulation by varying stimulus level'2011 7,876,311'Detection of low noise frequencies for multiple frequency sensor panel stimulation'2011 7,852,046'Power source switchover apparatus and method'2010 7,843,449'Three-dimensional display system'2010 7,844,902'Apparatus and method for handling special windows in a display'2010 7,719,367'Automatic frequency calibration'2010 7,710,397'Mouse with improved input mechanisms using touch sensors'2010 7,663,601'Hybrid low power computer mouse'2010 7,656,623'Methods and apparatus for charging a battery in a peripheral device'2010 7,622,950'GPIO mux/dynamic port configuration'2009 7,598,711'Power source switchover apparatus and method'2009 7,570,485'Camera latch'2009 7,451,250'Methods and apparatus for providing automatic high speed data connection in portable device'2008 7,412,654'Apparatus and method for handling special windows in a display'2008 7,154,477'Hybrid low power computer mouse'2006 7,126,816'Camera latch'2006 7,054,981'Methods and apparatus for providing automatic high speed data connection in portable device'2006 6,995,963'Methods and apparatus for charging a battery in a peripheral device'2006 6,753,856'System and method for dynamic correction of display characteristics'2004 6,583,676'Proximity/touch detector and calibration circuit'2003 6,256,682'Signaling of power modes over an interface bus'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2018Based in San Jose, CA, US· patent location history

2008–2021Patents assigned to APPLE INC (148)· patent assignee history

2009–2021Based in Los Altos, CA, US· patent location history

2011–2018Patents assigned to KRAH CHRISTOPH H (12)· patent assignee history

2012–2021Patents assigned to KRAH CHRISTOPH HORST (45)· patent assignee history

2012–2016Patents assigned to WILSON THOMAS JAMES (15)· patent assignee history

2012–2021Patents assigned to HOTELLING STEVE PORTER (14)· patent assignee history

2015–2021Based in Cupertino, CA, US· patent location history

2019Based in Saratoga, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
APPLE INC	148	2008–2021
KRAH CHRISTOPH HORSTself	45	2012–2021
WILSON THOMAS JAMES	15	2012–2016
HOTELLING STEVE PORTER	14	2012–2021
KRAH CHRISTOPH Hself	12	2011–2018

Locations

Location	Patents	Span
Los Altos, California, US	83	2009–2021
Cupertino, California, US	53	2015–2021
San Jose, California, US	18	2001–2018
Saratoga, California, US	1	2019