Phantom keys detection and prevention

Industry

CPC
H03M11/003

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

HELECTRICITY H03Electronic circuits H03MCODING DECODING CODE CONVERSION IN GENERAL H03M11/00Coding in connection with keyboards or like devices

Current Industry

H03M11/003Phantom keys detection and prevention

Industries

Patents Grantslast 30 patents

Information Patent Grant
Detecting actuations of buttons of a control device
- Patent number 11,588,500
- Issue date Feb 21, 2023
- Lutron Technology Company LLC
- Jaykrishna A. Shukla
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Detecting actuations of buttons of a control device
- Patent number 11,329,505
- Issue date May 10, 2022
- Lutron Technology Company LLC
- Jaykrishna A. Shukla
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Recognition of simultaneous key presses in keyboards
- Patent number 11,190,207
- Issue date Nov 30, 2021
- Hewlett-Packard Development Company, L.P.
- ShihFeng Yen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Detecting actuations of buttons of a control device
- Patent number 10,965,154
- Issue date Mar 30, 2021
- Lutron Technology Company LLC
- Jaykrishna A. Shukla
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Generating modified keyboard data received from a client device to...
- Patent number 10,838,510
- Issue date Nov 17, 2020
- Hewlett Packard Enterprise Development LP
- Minh Tran
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Keyboard apparatus
- Patent number 10,727,866
- Issue date Jul 28, 2020
- Lite-On Technology Corporation
- Er-Hao Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for ghosting suppression in capacitive key mat...
- Patent number 10,275,090
- Issue date Apr 30, 2019
- Texas Instruments Incorporated
- Peter Spevak
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for determining active input elements of an input arrangemen...
- Patent number 9,876,510
- Issue date Jan 23, 2018
- Christoph Heldeis
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Key input device and mobile communication terminal using the key in...
- Patent number 8,947,362
- Issue date Feb 3, 2015
- Kyocera Corporation
- Toshihiro Kamii
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Input device with ghost key suppression
- Patent number 8,754,790
- Issue date Jun 17, 2014
- Sunrex Technology Corp
- Shun-Pin Lin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard supporting N-key rollover
- Patent number 8,756,354
- Issue date Jun 17, 2014
- Duckychannel International Co., Ltd.
- Shih Chuan Chao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and system for detecting hidden ghost keys on keyboard matrix
- Patent number 8,749,407
- Issue date Jun 10, 2014
- Lite-On Electronics (Guangzhou) Limited
- Wen-Tong Liu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Identification of key information of keyboard
- Patent number 8,466,813
- Issue date Jun 18, 2013
- International Business Machines Corporation
- Masahiro Uemura
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard scan
- Patent number 8,350,730
- Issue date Jan 8, 2013
- Infineon Technologies AG
- Simon Siepmann
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Key operation device and mobile terminal device
- Patent number 8,339,292
- Issue date Dec 25, 2012
- Kyocera Corporation
- Toshihiro Kamii
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Ghost key detecting circuit and related method
- Patent number 8,314,723
- Issue date Nov 20, 2012
- Silitek Electronic (Guangzhou) Co., Ltd.
- Chiung-Chih Huang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
USB keyboard arrangement having N-keys rollover and the method thereof
- Patent number 8,274,408
- Issue date Sep 25, 2012
- Hui-Hu Liang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard control circuit
- Patent number 8,264,384
- Issue date Sep 11, 2012
- Silitek Electronic (Guangzhou) Co., Ltd.
- Mao-Ta Tsao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard with plural key switch matrices to detect ghosting
- Patent number 8,159,372
- Issue date Apr 17, 2012
- Microsoft Corporation
- Nathan C Sherman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method, apparatus, and computer-readable medium for key press deter...
- Patent number 7,453,376
- Issue date Nov 18, 2008
- Hewlett-Packard Development Company, L.P.
- Cyrille de Brébisson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard without ghost keys
- Patent number 7,375,655
- Issue date May 20, 2008
- Zippy Technology Corp.
- Tien-Min Lu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Input apparatus using multidimensional electrodes to define key fun...
- Patent number 6,992,601
- Issue date Jan 31, 2006
- Elan Microelectronics Corporation
- Yen-Chang Chiu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Logic circuit using hardware to process keyboard scanning
- Patent number 6,980,135
- Issue date Dec 27, 2005
- Alcor Micro, Corp.
- Chi-Tung Chang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Scan circuit and method for keyboard
- Patent number 6,961,008
- Issue date Nov 1, 2005
- Winbond Electronics Corp.
- Ching-Hsiang Feng
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard key discrimination employing drive line/sense line combina...
- Patent number 6,630,927
- Issue date Oct 7, 2003
- Microsoft Corporation
- Nathan C. Sherman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for forming switching circuit of keyboard without generating...
- Patent number 6,587,095
- Issue date Jul 1, 2003
- Behavior Tech Computer Corporation
- Tsung-Yu Wang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Key-pressing circuit
- Patent number 6,538,582
- Issue date Mar 25, 2003
- Benq Corporation
- Hwan-Rong Lin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Input device
- Patent number 5,583,498
- Issue date Dec 10, 1996
- Canon Kabushiki Kaisha
- Akihiko Sukigara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
N-key rollover keyboard without diodes
- Patent number 5,523,755
- Issue date Jun 4, 1996
- Compaq Computer Corp.
- David R. Wooten
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard circuit apparatus
- Patent number 5,514,842
- Issue date May 7, 1996
- Fujitsu Limited
- Takeshi Sugii
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
GHOST KEY PREVENTING CIRCUIT
- Publication number 20240113731
- Publication date Apr 4, 2024
- Primax Electronics Ltd.
- Chih-Chen Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Detecting Actuations of Buttons of a Control Device
- Publication number 20220376705
- Publication date Nov 24, 2022
- Lutron Technology Company LLC
- Jaykrishna A. Shukla
- G05 - CONTROLLING REGULATING
Information Patent Application
Detecting Actuations of Buttons of a Control Device
- Publication number 20210218275
- Publication date Jul 15, 2021
- Lutron Technology Company LLC
- Jaykrishna A. Shukla
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RECOGNITION OF SIMULTANEOUS KEY PRESSES IN KEYBOARDS
- Publication number 20210218416
- Publication date Jul 15, 2021
- Hewlett-Packard Development Company, L.P.
- ShihFeng YEN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ANTI-GHOST MEMBRANE SWITCH DEVICE
- Publication number 20190385801
- Publication date Dec 19, 2019
- CHICONY ELECTRONICS CO., LTD.
- Chien-Shuo Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
KEYBOARD APPARATUS
- Publication number 20190074848
- Publication date Mar 7, 2019
- LITE-ON ELECTRONICS (GUANGZHOU) LIMITED
- Kuo-Fu Kuo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
KEYBOARD APPARATUS
- Publication number 20190052285
- Publication date Feb 14, 2019
- LITE-ON TECHNOLOGY CORPORATION
- Er-Hao Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Detecting Actuations of Buttons of a Control Device
- Publication number 20180331572
- Publication date Nov 15, 2018
- Lutron Electronics Co., Inc.
- Jaykrishna A. Shukla
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
KEYBOARD DATA
- Publication number 20180307327
- Publication date Oct 25, 2018
- HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
- Minh Tran
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
CAPACITIVE KEYBOARD
- Publication number 20170338816
- Publication date Nov 23, 2017
- TOPRE CORPORATION
- Shigeki Minezaki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD FOR DETERMINING ACTIVE INPUT ELEMENTS OF AN INPUT ARRANGEMEN...
- Publication number 20160013806
- Publication date Jan 14, 2016
- Christoph HELDEIS
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ELECTRONIC DEVICE WITH BOUNCE PROTECTION CIRCUIT
- Publication number 20140266813
- Publication date Sep 18, 2014
- HON HAI PRECISION INDUSTRY CO., LTD.
- YA-GUO WANG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
KEYBOARD SUPPORTING N-KEY ROLLOVER
- Publication number 20130060976
- Publication date Mar 7, 2013
- DUCKYCHANNEL INTERNATIONAL CO., LTD.
- Shih Chuan Chao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
INPUT DEVICE WITH GHOST KEY SUPPRESSION
- Publication number 20120098680
- Publication date Apr 26, 2012
- Shun-Pin Lin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
KEY INPUT DEVICE AND MOBILE COMMUNICATION TERMINAL USING THE KEY IN...
- Publication number 20110234499
- Publication date Sep 29, 2011
- Kyocera Corporation
- Toshihiro Kamii
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
USB Keyboard Arrangement Having N-Keys Rollover and the Method Thereof
- Publication number 20110006927
- Publication date Jan 13, 2011
- Hui-hu Liang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD AND SYSTEM FOR DETECTING HIDDEN GHOST KEYS ON KEYBOARD MATRIX
- Publication number 20100253553
- Publication date Oct 7, 2010
- SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.
- Wen-Tong LIU
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
GHOST KEY DETECTING CIRCUIT AND RELATED METHOD
- Publication number 20100253554
- Publication date Oct 7, 2010
- Chiung-Chih Huang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Keyboard control circuit
- Publication number 20100073204
- Publication date Mar 25, 2010
- Mao-Ta Tsao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RESISTIVE SWITCH MATRIX
- Publication number 20100066567
- Publication date Mar 18, 2010
- Microsoft Corporation
- Paul H. Dietz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RESISTIVE SWITCH MATRIX
- Publication number 20100066572
- Publication date Mar 18, 2010
- Microsoft Corporation
- Paul H. Dietz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
KEY INPUT APPARATUS
- Publication number 20090224949
- Publication date Sep 10, 2009
- Pantech & Curitel Communications, Inc.
- Dae-Jin KWON
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
KEYBOARD WITH PLURAL KEY SWITCH MATRICES TO DETECT GHOSTING
- Publication number 20090096640
- Publication date Apr 16, 2009
- Microsoft Corporation
- Nathan C. Sherman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
INFORMATION PROCESSING DEVICE AND CONTROL METHOD OF THE SAME
- Publication number 20090002204
- Publication date Jan 1, 2009
- KABUSHIKI KAISHA TOSHIBA1
- Tooru MAMATA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Keyboard Scan
- Publication number 20080316067
- Publication date Dec 25, 2008
- INFINEON TECHNOLOGIES AG
- Simon SIEPMANN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
KEY OPERATION DEVICE AND MOBILE TERMINAL DEVICE
- Publication number 20080238729
- Publication date Oct 2, 2008
- SANYO ELECTRIC CO., LTD.
- Toshihiro Kamii
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
IDENTIFICATION OF KEY INFORMATION OF KEYBOARD
- Publication number 20080018501
- Publication date Jan 24, 2008
- International Business Machines Corporation
- Masahiro Uemura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Keyboard without ghost keys
- Publication number 20070247339
- Publication date Oct 25, 2007
- Zippy Technology Corp.
- Tien-Min Lu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method, apparatus, and computer-readable medium for key press deter...
- Publication number 20060053391
- Publication date Mar 9, 2006
- Hewlett-Packard Development Company, L.P.
- Cyrille de Brebisson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Scan circuit and method for keyboard
- Publication number 20030179111
- Publication date Sep 25, 2003
- WINBOND ELECTRONICS CORP.
- Ching-Hsiang Feng
- H03 - BASIC ELECTRONIC CIRCUITRY

Phantom keys detection and prevention

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Detecting actuations of buttons of a control device

Detecting actuations of buttons of a control device

Recognition of simultaneous key presses in keyboards

Detecting actuations of buttons of a control device

Generating modified keyboard data received from a client device to...

Keyboard apparatus

Method and apparatus for ghosting suppression in capacitive key mat...

Method for determining active input elements of an input arrangemen...

Key input device and mobile communication terminal using the key in...

Input device with ghost key suppression

Keyboard supporting N-key rollover

Method and system for detecting hidden ghost keys on keyboard matrix

Identification of key information of keyboard

Keyboard scan

Key operation device and mobile terminal device

Ghost key detecting circuit and related method

USB keyboard arrangement having N-keys rollover and the method thereof

Keyboard control circuit

Keyboard with plural key switch matrices to detect ghosting

Method, apparatus, and computer-readable medium for key press deter...

Keyboard without ghost keys

Input apparatus using multidimensional electrodes to define key fun...

Logic circuit using hardware to process keyboard scanning

Scan circuit and method for keyboard

Keyboard key discrimination employing drive line/sense line combina...

Method for forming switching circuit of keyboard without generating...

Key-pressing circuit

Input device

N-key rollover keyboard without diodes

Keyboard circuit apparatus

Patents Applicationslast 30 patents

GHOST KEY PREVENTING CIRCUIT

Detecting Actuations of Buttons of a Control Device

Detecting Actuations of Buttons of a Control Device

RECOGNITION OF SIMULTANEOUS KEY PRESSES IN KEYBOARDS

ANTI-GHOST MEMBRANE SWITCH DEVICE

KEYBOARD APPARATUS

KEYBOARD APPARATUS

Detecting Actuations of Buttons of a Control Device

KEYBOARD DATA

CAPACITIVE KEYBOARD

METHOD FOR DETERMINING ACTIVE INPUT ELEMENTS OF AN INPUT ARRANGEMEN...

ELECTRONIC DEVICE WITH BOUNCE PROTECTION CIRCUIT

KEYBOARD SUPPORTING N-KEY ROLLOVER

INPUT DEVICE WITH GHOST KEY SUPPRESSION

KEY INPUT DEVICE AND MOBILE COMMUNICATION TERMINAL USING THE KEY IN...

USB Keyboard Arrangement Having N-Keys Rollover and the Method Thereof

METHOD AND SYSTEM FOR DETECTING HIDDEN GHOST KEYS ON KEYBOARD MATRIX

GHOST KEY DETECTING CIRCUIT AND RELATED METHOD

Keyboard control circuit

RESISTIVE SWITCH MATRIX

RESISTIVE SWITCH MATRIX

KEY INPUT APPARATUS

KEYBOARD WITH PLURAL KEY SWITCH MATRICES TO DETECT GHOSTING

INFORMATION PROCESSING DEVICE AND CONTROL METHOD OF THE SAME

Keyboard Scan

KEY OPERATION DEVICE AND MOBILE TERMINAL DEVICE

IDENTIFICATION OF KEY INFORMATION OF KEYBOARD

Keyboard without ghost keys

Method, apparatus, and computer-readable medium for key press deter...

Scan circuit and method for keyboard