[go: up one dir, main page]

GB1345895A - Multielectrode transducer - Google Patents

Multielectrode transducer

Info

Publication number
GB1345895A
GB1345895A GB1363971*[A GB1363971A GB1345895A GB 1345895 A GB1345895 A GB 1345895A GB 1363971 A GB1363971 A GB 1363971A GB 1345895 A GB1345895 A GB 1345895A
Authority
GB
United Kingdom
Prior art keywords
electrodes
striker
binary
keyboard
array
Prior art date
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.)
Expired
Application number
GB1363971*[A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
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 by RCA Corp filed Critical RCA Corp
Publication of GB1345895A publication Critical patent/GB1345895A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • 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
    • H03K17/96—Touch switches
    • H03K17/964—Piezoelectric touch switches
    • H03K17/9643—Piezoelectric touch switches using a plurality of detectors, e.g. keyboard
    • 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
    • H03K17/967—Switches controlled by moving an element forming part of the switch having a plurality of control members, e.g. keyboard
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
    • H10N30/302—Sensors

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)

Abstract

1345895 Keyboards RCA CORPORATION 7 May 1971 [14 May 1970] 13639/71 Heading B6F [Also in Divisions H2 and H4] A keyboard transducer comprises a piezoelectric element 4 into which a plurality of electrodes 10 are embedded, at each of which a signal is produced when the element is struck. As shown in Fig. 4, the electrodes extend longitudinally of the element and the striking mechanism comprises a striker 24 carried by a return leaf spring 18 and retained by a pivoted latch 30 until the latch is released by pressure on a key 28 which at the same time compresses a loading spring 26 for the striker. Alternatively the electrodes may extend transversely of the element at different levels as shown in Fig. 3b, wherein an array of elements 4 has sets of electrodes 10a ... 10c and 10d ... 10f extending perpendicular to each other, each electrode extending through several elements. Such an array may be fabricated as a single laminated structure, Figs. 4a, 4b (not shown). Fig. 6, shows how a plurality of transducers in a keyboard, each with five electrodes such as 10a, may be connected so that each produces a different set of signals according to a five-bit code. Each electrode represented by a black circle is connected to one of five output lines 2‹ ... 2<SP>4</SP> and represents a binary 1 and each electrode represented by a clear circle is unconnected and represents a binary 0.
GB1363971*[A 1970-05-14 1971-05-07 Multielectrode transducer Expired GB1345895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3712470A 1970-05-14 1970-05-14

Publications (1)

Publication Number Publication Date
GB1345895A true GB1345895A (en) 1974-02-06

Family

ID=21892563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1363971*[A Expired GB1345895A (en) 1970-05-14 1971-05-07 Multielectrode transducer

Country Status (9)

Country Link
US (1) US3648279A (en)
JP (1) JPS466821A (en)
CA (1) CA936104A (en)
CH (1) CH538155A (en)
DE (1) DE2123822A1 (en)
FR (1) FR2091584A5 (en)
GB (1) GB1345895A (en)
NL (1) NL7106589A (en)
SE (1) SE367496B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130911Y1 (en) * 1970-12-17 1976-08-03
JPS4831809A (en) * 1971-08-28 1973-04-26
US3792467A (en) * 1973-01-08 1974-02-12 Control Data Corp Impact transducer apparatus
GB1451534A (en) * 1973-02-23 1976-10-06 Mansei Kogyo Kk Piezoelectric generating device
CA1026237A (en) * 1973-09-17 1978-02-14 Kureha Kagaku Kogyo Kabushiki Kaisha Key board switch
JPS5410214B2 (en) * 1973-10-15 1979-05-02
JPS51129129A (en) * 1975-05-02 1976-11-10 Kureha Chem Ind Co Ltd Matrix switch
JPS51138327A (en) * 1975-05-26 1976-11-29 Nippon Telegr & Teleph Corp <Ntt> Piezoelectric film switch
JPS5257982A (en) * 1975-11-08 1977-05-12 Nippon Telegraph & Telephone Piezooelectric keyboard
JPS52135287A (en) * 1976-05-28 1977-11-12 Kureha Chemical Ind Co Ltd Method of inputting piezooelectric signal
JPS5372182A (en) * 1976-12-09 1978-06-27 Kkf Corp Electrical signal generator
DE2718289A1 (en) * 1977-04-25 1978-10-26 Rosenthal Technik Ag PIEZOCERAMIC SWITCH WITH SMALL MOUNTING DEPTH
JPS5840805B2 (en) * 1978-04-10 1983-09-08 東レ株式会社 Coordinate input structure
JPS5747435A (en) * 1980-09-01 1982-03-18 Fuji Oil Co Ltd Base material for making cheese cakes
US4580074A (en) * 1984-11-26 1986-04-01 General Motors Corporation Piezoelectric transducer with coded output signal
US4975616A (en) * 1988-08-18 1990-12-04 Atochem North America, Inc. Piezoelectric transducer array
US5636729A (en) * 1995-06-12 1997-06-10 Wiciel; Richard Piezo switch
CN103208899B (en) * 2012-01-16 2016-02-17 曾胜克 power generation device
US20230036761A1 (en) * 2021-07-30 2023-02-02 Neptune Technology Group Inc. Method and system for transducer validation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US23813A (en) * 1859-04-26 Leonard b
US2824980A (en) * 1952-03-14 1958-02-25 Erie Resistor Corp Piezoelectric transducers
US2864013A (en) * 1953-06-29 1958-12-09 Electro Voice Sensitive strain responsive transducer and method of construction
US3366808A (en) * 1966-01-03 1968-01-30 Friden Inc Keyboard key transducer
US3464531A (en) * 1967-05-16 1969-09-02 Us Army Manual electronic keyboard

Also Published As

Publication number Publication date
JPS466821A (en) 1971-12-15
FR2091584A5 (en) 1972-01-14
DE2123822A1 (en) 1971-12-02
US3648279A (en) 1972-03-07
CH538155A (en) 1973-06-15
CA936104A (en) 1973-10-30
NL7106589A (en) 1971-11-16
SE367496B (en) 1974-05-27

Similar Documents

Publication Publication Date Title
GB1345895A (en) Multielectrode transducer
US3750113A (en) Capacitive keyboard
ES394738A1 (en) Unlimited roll keyboard circuit
GB1531318A (en) Master keyboard terminal and auxiliary keyboard terminal system
GB1248088A (en) Improvements relating to microphones
GB2002564A (en) Electromechanical transducer for relief display panel
GB833369A (en) Improvements in or relating to translating stored data into a code
GB967173A (en) Improvements relating to ultrasonic delay line transducers
GB1360099A (en) Data sensing arrangement in combination with a data carrier
GB895637A (en) Improvements in data processing systems
US3588310A (en) Piano tone simulation system with piezoelectric generator
GB874870A (en) Electronic apparatus for comparing and sorting data
GB1508502A (en) Keyboard
GB1290272A (en)
IE32241L (en) Push button signalling.
US3665211A (en) Surface acoustic wave computer logic elements
US4194188A (en) Interrogation of key switches using pulse width detection
GB1513624A (en) Key sensing circuit in a digital calculator
GB1477213A (en) Automatic accompaniment system for use with electronic musical instrument
GB1205203A (en) Improvements in or relating to circuit arrangements for the production of telegraphic pulses
SU495710A1 (en) Analog memory cell
GB916182A (en) Door latches
GB1370591A (en) Device for generating data
JPS57117045A (en) Multiplying circuit
EP0230304A3 (en) Content adressable memory

Legal Events

Date Code Title Description
49R Reference inserted (sect. 9/1949)
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees