USB289523I5 - - Google Patents

Info

Publication number
USB289523I5
USB289523I5 US28952372A USB289523I5 US B289523 I5 USB289523 I5 US B289523I5 US 28952372 A US28952372 A US 28952372A US B289523 I5 USB289523 I5 US B289523I5
Authority
US
United States
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US289523A priority Critical patent/US3921166A/en
Publication of USB289523I5 publication Critical patent/USB289523I5/en
Application granted granted Critical
Publication of US3921166A publication Critical patent/US3921166A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/20—Dynamic coding, i.e. by key scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H04L17/04—Apparatus or circuits at the transmitting end with keyboard co-operating with code-bars
US289523A 1972-09-15 1972-09-15 Capacitance matrix keyboard Expired - Lifetime US3921166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US289523A US3921166A (en) 1972-09-15 1972-09-15 Capacitance matrix keyboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US289523A US3921166A (en) 1972-09-15 1972-09-15 Capacitance matrix keyboard

Publications (2)

Publication Number Publication Date
USB289523I5 true USB289523I5 (en) 1975-01-28
US3921166A US3921166A (en) 1975-11-18

Family

ID=23111906

Family Applications (1)

Application Number Title Priority Date Filing Date
US289523A Expired - Lifetime US3921166A (en) 1972-09-15 1972-09-15 Capacitance matrix keyboard

Country Status (1)

Country Link
US (1) US3921166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310952A1 (en) * 1975-05-16 1976-12-10 Westinghouse Electric Corp ELEVATOR

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104725A (en) * 1976-03-26 1978-08-01 Norland Corporation Programmed calculating input signal module for waveform measuring and analyzing instrument
US4190826A (en) * 1977-05-18 1980-02-26 Bell Telephone Laboratories, Incorporated Multidevice position digital encoder
US4222038A (en) * 1978-02-24 1980-09-09 Motorola, Inc. Microcomputer keyboard input circuitry
US4221975A (en) * 1978-04-19 1980-09-09 Touch Activated Switch Arrays, Inc. Touch activated controller and method
US4186392A (en) * 1978-07-28 1980-01-29 Burroughs Corporation Touch panel and operating system
US4211915A (en) * 1978-12-04 1980-07-08 General Electric Company Keyboard verification system
US4405978A (en) * 1979-06-25 1983-09-20 Honeywell Information Systems Inc. Microprocessor based computer terminal
US4363108A (en) * 1979-06-25 1982-12-07 Honeywell Information Systems Inc. Low cost programmable video computer terminal
JPS56147226A (en) * 1980-04-15 1981-11-16 Brother Ind Ltd Key input device
GB2094529B (en) * 1981-03-06 1984-07-18 Solartron Electronic Group The Keyboard modules for use in data terminals
US4405917A (en) * 1981-04-28 1983-09-20 Honeywell Inc. Matrix screening and grounding arrangement and method
US4359720A (en) * 1981-04-29 1982-11-16 Honeywell Inc. Environmentally sealed variable capacitance apparatus
US4758829A (en) * 1982-06-04 1988-07-19 Smith Iii William N Apparatus for stimulating a keyboard
US4550221A (en) * 1983-10-07 1985-10-29 Scott Mabusth Touch sensitive control device
US4733222A (en) * 1983-12-27 1988-03-22 Integrated Touch Arrays, Inc. Capacitance-variation-sensitive touch sensing array system
US4706068A (en) * 1985-01-30 1987-11-10 Wyse Technology, Inc. Four wire keyboard interface
JP2733300B2 (en) * 1989-04-28 1998-03-30 松下電器産業株式会社 Key input device
US5541622A (en) * 1990-07-24 1996-07-30 Incontrol Solutions, Inc. Miniature isometric joystick
US5861583A (en) * 1992-06-08 1999-01-19 Synaptics, Incorporated Object position detector
US6239389B1 (en) 1992-06-08 2001-05-29 Synaptics, Inc. Object position detection system and method
US5880411A (en) 1992-06-08 1999-03-09 Synaptics, Incorporated Object position detector with edge motion feature and gesture recognition
US6028271A (en) * 1992-06-08 2000-02-22 Synaptics, Inc. Object position detector with edge motion feature and gesture recognition
US5889236A (en) * 1992-06-08 1999-03-30 Synaptics Incorporated Pressure sensitive scrollbar feature
DE69324067T2 (en) * 1992-06-08 1999-07-15 Synaptics Inc Object position detector
US5790107A (en) * 1995-06-07 1998-08-04 Logitech, Inc. Touch sensing method and apparatus
JPH09146489A (en) * 1995-11-20 1997-06-06 Sharp Corp Scanning circuit and image display device
US5920309A (en) * 1996-01-04 1999-07-06 Logitech, Inc. Touch sensing method and apparatus
US5825352A (en) * 1996-01-04 1998-10-20 Logitech, Inc. Multiple fingers contact sensing method for emulating mouse buttons and mouse operations on a touch sensor pad
WO1997040482A1 (en) * 1996-04-24 1997-10-30 Logitech, Inc. Touch and pressure sensing method and apparatus
JPH09319326A (en) * 1996-05-30 1997-12-12 Sharp Corp Scanning circuit and matrix type picture display device
US5943044A (en) * 1996-08-05 1999-08-24 Interlink Electronics Force sensing semiconductive touchpad
US6380929B1 (en) 1996-09-20 2002-04-30 Synaptics, Incorporated Pen drawing computer input device
US5854625A (en) * 1996-11-06 1998-12-29 Synaptics, Incorporated Force sensing touchpad
US5958023A (en) * 1997-01-07 1999-09-28 Micron Electronics, Inc. Method for low power wireless keyboard that detects a host computer query for the state of a key then powers up to determine and transmit back the state of that key
US6222528B1 (en) * 1997-03-07 2001-04-24 Cirque Corporation Method and apparatus for data input
US6147680A (en) * 1997-06-03 2000-11-14 Koa T&T Corporation Touchpad with interleaved traces
US6891531B2 (en) * 2002-07-05 2005-05-10 Sentelic Corporation Sensing an object with a plurality of conductors
GB0319714D0 (en) * 2003-08-21 2003-09-24 Philipp Harald Anisotropic touch screen element
US20070222767A1 (en) * 2006-03-22 2007-09-27 David Wang Glide touch sensor based interface for navigation infotainment systems
US20070222764A1 (en) * 2006-03-22 2007-09-27 Centrality Communications, Inc. Glide touch sensor based interface for navigation infotainment systems
US8619054B2 (en) * 2006-05-31 2013-12-31 Atmel Corporation Two dimensional position sensor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437795A (en) * 1965-06-28 1969-04-08 Ampex Data input devices and systems
US3588875A (en) * 1966-10-10 1971-06-28 Sanders Associates Inc Character encoder
US3623082A (en) * 1970-05-27 1971-11-23 Clare & Co C P Keyboard assembly
US3651463A (en) * 1970-04-17 1972-03-21 Medidata Soiences Inc Switch coding circuitry
US3662378A (en) * 1970-06-01 1972-05-09 Cherry Electrical Prod Electronic keyboard input circuit
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit
US3683371A (en) * 1970-09-15 1972-08-08 Burroughs Corp Magnetic keyboard terminal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437795A (en) * 1965-06-28 1969-04-08 Ampex Data input devices and systems
US3588875A (en) * 1966-10-10 1971-06-28 Sanders Associates Inc Character encoder
US3651463A (en) * 1970-04-17 1972-03-21 Medidata Soiences Inc Switch coding circuitry
US3623082A (en) * 1970-05-27 1971-11-23 Clare & Co C P Keyboard assembly
US3662378A (en) * 1970-06-01 1972-05-09 Cherry Electrical Prod Electronic keyboard input circuit
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit
US3683371A (en) * 1970-09-15 1972-08-08 Burroughs Corp Magnetic keyboard terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310952A1 (en) * 1975-05-16 1976-12-10 Westinghouse Electric Corp ELEVATOR

Also Published As

Publication number Publication date
US3921166A (en) 1975-11-18

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