US3632874A - Graphic data transcription system - Google Patents

Graphic data transcription system Download PDF

Info

Publication number
US3632874A
US3632874A US888381A US3632874DA US3632874A US 3632874 A US3632874 A US 3632874A US 888381 A US888381 A US 888381A US 3632874D A US3632874D A US 3632874DA US 3632874 A US3632874 A US 3632874A
Authority
US
United States
Prior art keywords
terminals
plate
writing
terminal
circle
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 - Lifetime
Application number
US888381A
Other languages
English (en)
Inventor
Lucien C Malavard
Picrre M Marty
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Application granted granted Critical
Publication of US3632874A publication Critical patent/US3632874A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/22—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using plotters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/08—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam directly tracing characters, the information to be displayed controlling the deflection and the intensity as a function of time in two spatial co-ordinates, e.g. according to a cartesian co-ordinate system
    • G09G1/12—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam directly tracing characters, the information to be displayed controlling the deflection and the intensity as a function of time in two spatial co-ordinates, e.g. according to a cartesian co-ordinate system the deflection signals being produced by essentially analogue means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04113—Peripheral electrode pattern in resistive digitisers, i.e. electrodes at the periphery of the resistive sheet are shaped in patterns enhancing linearity of induced field

Definitions

  • PATENTEB JAN 41972 SHEET 9 [1F 9 1 GRAPHIC DATA TRANSCRIPTION SYSTEM] This invention relates to a graphic data transcription system, more particularly of the kind for tracing and copying signs such as alphanumeric characters, signatures and drawings and for transmitting and reproducing them at distance in analog form or after digital conversion.
  • the system according to the invention is of use inter alia as a peripheral input facility for a digital computer or as a display table and can form therewith a two-way or multiway communication system.
  • the apparatus comprises a writing plate made of an electrically resistant material having a given shape, two pairs of equipotential electrodes each comprising two elements, at least one series of conductive terminals which are not connected to one another and which are each in contact with the writing plate and which are distributed along a line near the writing-plate periphery; means for applying a constant biasing voltage alternately and periodically at a selected repetition frequency between the two elements of one and the other electrode pair, such voltage raising the potential of each of the two elements to a given value relatively to a reference-potential point; switching and connection means controlled by a control signal generator to alternately and periodically connect at least some of such terminals to the electrode pairs and to produce an electric field on the surface of the writing plate, the or each series of terminals being so disposed that electric fields produced thereby on the writingplate surface when the or each series of terminals is consecutively connected to one and the other of said electrode pairs are at right angles to one another; a conductive point probe in bearing contact with and movable on the writing-plate surface; and
  • the terminal se' ries are so arranged that the ratio of terminal width measured along the line portion along which the terminals are disposed to the space between two consecutive terminals is between one and three; and the resistant plate is in contact with each terminal only by way of a very small fraction of the terminal surface.
  • the operative surface of the resistant plate is in shape rectangular; and four series of terminals are disposed one along each side, of the rectangular outline of the plate, each pair of such series disposed along opposite sides of said outline also forming one of the electrode pairs when the terminals thereof are respectively linked by direct connections to two points between which said biasing voltage is applied.
  • the coordinates used in this case are Cartesian coordinates.
  • the operative surface of the resistant plate is in shape circular and all the said terminals are disposed on a circle forming the outline of the operative surface, the two elements of each electrode pair which are brought alternately to different potentials consisting of two further series of terminals disposed along straight lines around the circularly arranged terminals and connected alternately to all latter the terminals so as to impart to each one thereof a potential which is a function of the angular position of such terminal, the connection between the circularly arranged and the said further terminals being effected through the agency of resistances of appropriate values energized from the electrodes, the distribution of the terminals at any particular time differing according as one or the other of the electrode pairs is the one which is biased at that particular time.
  • the various potentials required for the terminals are produced by a system comprising two auxiliary electrode pairs each comprising a series of terminals disposed on a fraction of a circle and alternately energized at a constant potential, an auxiliary system of terminals arranged in a circle, an auxiliary resistant plate in electrical contact with the two auxiliary pairs and with the last-mentioned system, and a direct connection between each of the terminals of the auxiliary system and a corresponding one of the terminals arranged in a circle on the outline of the resistant plate.
  • one of the electrode pairs comprises two series of terminals disposed on two circle radii
  • the other electrode pair comprises in the case of one of its elements terminals distributed around the periphery of such circle and in the case of the other element a terminal disposed at the center of such circle, the last-mentioned terminal possibly being divided into a number of smaller terminals.
  • the said terminals also constitute the peripheral series of terminals which are used to produce the desired electric fields on the surface of the resistive plate.
  • the terminals which at any particular time are connected to a single biased electrode are themselves electrically interconnected, but the terminals connected at that particular time to the same unbiased electrode are isolated from one another through the agency of appropriate switching means controlled by the control signal generator.
  • FIG. ll shows the basic circuit diagram of an apparatus according to the invention, for the case where the writing plate is rectangular, the coordinates are Cartesian and the switching means are electromechanical relays;
  • FIGS. 2 and 3 are diagrams showing the effect of the terminal width-to-spacing ratio on the shape of the electric fields produced in the resistant material of the writing plate;
  • FIGS. 3a, 3b, 3c and 3d are diagrams showing, in the case of a rectangular writing plate, the influence of the relative dimensions of terminals and spacings on current line distortion;
  • FIG. 4 is a perspective view of writing-plate construction when the plate is used for copying
  • FIG. 5 shows some of the circuit diagram of the facility according to the invention when the switching means are transistors
  • FIG. 6 shows electrical means for applying to the terminals in contact with the writing plate voltages distributed in accordance with an appropriate law, in the case in which the writing plate is circular and the coordinates used are Cartesian;
  • FIG. 7 shows a first embodiment of the invention which a circular writing plate, in the case in which polar coordinates are used;
  • FIG. 8 shows a second embodiment of the invention with a circular writing plate, in the case in which the coordinates used are Cartesian, with an auxiliary system for applying appropriately distributed voltages to the terminals around the plate periphery, and
  • FIG. 9 shows a constructional variant of the writing device wherein the probe is not a pencil or tip but a flexible metallized strip or foil or the like stretched over the writing plate.
  • FIG. 1 there can be seen a writing plate 2 and terminals.
  • the terminals along the two long or major sides of the plate have the references 301 to 320 and 321 to 340, while the terminals along the two short sides have the references 341 to 355 and 361 to 375.
  • Terminals 301 to 320 are connected to the positive side of a DC supply via contacts of a relay 7.
  • the terminals 321 to 340, 341 to 355 and 361 to 375 are connected to the negative, positive and negative side respectively, of the DC supply via contacts of relays 8, 9, 10.
  • Only four relays 7-10 are shown; in practice, a sufficient number of relays is provided for them to have enough contacts to energize all the aforementioned terminals.
  • a generator 11 producing periodic control signals controls the relays 7, 8, on the one hand, and the relays 9, 10, on the other hand, alternately.
  • a probe 12 in the form of a pen or pencil or the like which has e.g., a graphite tip and with which the operator writes on the plate 2.
  • Consecutive signal pairs are collected between probe 12 and a reference-potential point; the amplitudes of such signal pairs respectively measure the abscissa and ordinate of the contact point, which is better defined in proportion as the control signal distribution frequency is higher relatively to the speed of writing. In practice the last-mentioned frequency can be e.g. 1,000 hertz.
  • Probe 12 is connected by a flexible wire to a series-parallel converter 13 serving to separate abscissa signals from ordinate signals and to delay one of the two signal groups relatively to the other by half the signal repetition period. Converter 13 therefore delivers pairs of simultaneous signals respectively measuring the abscissa and ordinate of a point of the graphic data being written or copied.
  • the abscissa and ordinate signal trains are used differently according as it is required to directly display the data or convert the same into digital indications.
  • the trains go to a low-pass filter 14 for conversion into an analog signal, and the resulting signals are applied to the horizontal and vertical deflecting plates of a display tube (oscilloscope) 15.
  • the trains go to a converter for converting amplitude-modulated signals into coded groups of binary signals (PCM) 16.
  • PCM binary signals
  • the terminals along any one side of the writing plate is greater than the maximum number of contacts of a single relay, the terminals can of course be divided into groups which are brought to the appropriate potentials by way of the contacts of a number of parallel-energized relays.
  • FIG. 2 a part of the rectangular plate 2 shown in FIG. 1 can be seen in greater detail.
  • the hatched area of FIG. 2 represents the resistive layer forming the writing plate 2, and the terminals 319, 320 and 341-343 perform the same functions as the terminals of like references in FIG. 1.
  • the terminals (341, 342, 343) or (319, 320) make contact with the plate 2 over only a very small proportion of terminal surface.
  • the advantage of this feature is that when e.g. the terminals 341-343 are not connected to a bias voltage source, there is a relatively high resistance between any two adjacent terminals, but when those same terminals are connected to the bias source, the last-mentioned resistance has no effect, all things being as if the terminals concerned were interconnected by direct connections.
  • the left-hand portion shows the distortion of the current lines 401-403 extending from a top terminal, as 341-343 (FIG. 1), to a bottom terminal 361-363, on the assumption that both such terminals are those energized at the considered time and are disposed opposite one another.
  • the current lines tend to be concentrated near straight lines interconnecting the centers of facing terminals 341 and 361 or 342 and 362, and to thin out in the spaces between such straight lines.
  • FIGS. 3a, 3b, 3c, 3d show the behavior of the current lines inside an elongated band of the resisting plate perpendicular to one of the edges thereof and having a width equal to the half-pitch (p/2) of the terminals (that is equal to the half-sum of the width m of a terminal and of that of a spacing between two contiguous terminals).
  • This band is limited by the perpendicular line y'y' to the said edge at the middle point a of the width of the considered terminal and the perpendicular line y 'y" to the same edge at the middle of a spacing contiguous to that terminal.
  • the parts M and I shown along the axis xx respectively represent the half of a metallic (or metallized) terminal and the insulating half-spacing contiguous thereto.
  • the curves shown in FIGS. 3a to 3d are the loci of the points of the resisting plate at which a given angle 0 exists between the electric field (and, consequently, the current lines) and an ideal direction perpendicular to the edge of the plate, the latter edge being taken as the x-x axis in all of the latter FIGS.
  • the angle 0 is zero, by reason of symmetry.
  • 0 is equal to degrees, since the electric field lines are perpendicular to the interface between the insulating part I and the half-terminal M.
  • 3a to 3d are shown the various curves corresponding to 0 0.5; 2; 5; 10; 2O; 40; 50 and 70 degrees
  • the region of the plate for which the curves corresponding to an angle 9 having a given, nonzero value is a region in which the field lines are not parallel to each other. This region may be considered as all the more disturbed" that 0 has a lower value. It may be conventionally admitted, for instance, that the nonhomogeneous nature of the field makes the disturbed region useless for graphic transcription if the angle 0 exceeds 3 degrees.
  • the magnitude of the projection on axes y-y' and y"y" of the maximum ordinate of the curve for which 0 equals 3 degrees then may be conventionally taken as a measure of the height h of the disturbed region.
  • FIGS. 3a, 3b, and 30 it has been assumed that the resisting plate extends to infinity in the x-xdirection; the ratio (m/p) of the width m of a terminal to the above-defined pitch p has been successively given the values 0.5 (FIG. 3a), 0.7 (FIG. 3b) and 0.25 (FIG. 3c).
  • FIGS. 3a to 30 it may be seen that h is smaller in the case of FIG. 312 than in that of any other figure. Consequently, the best result would be obtained by taking (m/p) equal to 0.75 if account had not to be taken of the influence of the parallel to y-yterminal rows at both ends of the plate in the x x direction.
  • the apparatus comprises an illuminated base 1 adapted to receive a sheet of paper comprising graphic data to be copied, if the apparatus is to be used for copying.
  • Articulated to base 1 is a transparent plate 2 on which a thin conductive surface layer is deposited.
  • the resistance per square (equal to the quotient of resistivity divided by thickness) of the layer is between 100 and 800 ohms.
  • the transparency of the coated plate increases with the resistance per square; for instance, plates having resistances per square of 170,300 and 800 ohms have transparencies of 45, 50 and 60 percent respectively.
  • a plate having a resistance of e.g. 800 ohms can be chosen.
  • either the transparent plate can be applied directly to the outside surface of the tube screen or the resistant layer can be deposited thereon directly.
  • each side of plate 2 Disposed along each side of plate 2 are discrete printed terminals 3 into which connectors 4 can be plugged; only one connector 4 is shown in FIG. 4.
  • the rectangular electric fields are applied to the writing plate via the terminals 3.
  • the spacing between adjacent terminals is comprised between one-third of the width of a single terminal and the latter width.
  • a framelike cover 5 can be folded down onto the writing plate and serves to bound the area available for writing and to protect the terminals and connectors.
  • the writing plate is circular and is e.g. the screen of a cathode ray tube, the screen outer surface being made appropriately conductive.
  • the screen is mounted in a square frame 18 placed around the circular writing plate 19.
  • the frame 18 and 19 each have peripheral terminals, 3 and 34 respectively. Inserted between two terminals 3 and 34 of the same abscissa (r cos 0) or of the same ordinate r sin 0 (see FIG. 6) are resistances 20, 21 having the values:
  • the frame 18 can be omitted and the abscissa resistances 20 can be directly connected to the contacts of the relays 7 and 8 of FIG. I, while the ordinate resistances 21 can be directly connected to the contacts of the relays 9, 10, of FIG. 1.
  • the opposite sides of the frame 18 serve as pairs of constant-potential electrodes from which the terminals, as
  • the tangential-field terminals 31, 32 are disposed along two radii.
  • the radial-field terminals 33, 34, 33 is disposed at the center of plate I9 and the other terminals 34 are disposed around the plate periphery.
  • the terminals 31-33 are placed on the back of the plate so as not to impede writing and are connected to the covering conductive layer be metal lead-throughs. That part of the plate which is disposed between the terminal rows 31 and 32 is insulating.
  • the terminals 31-34 are connected to appropriate sides of the power supply by the contacts of relays 27-30 performing the same function as the relays 7-10 of FIG. 1.
  • the circular writing plate 19 has peripheral terminals 34, for instance, I20 terminals 34.
  • auxiliary resistant plate 35 which is not used for writing and which has peripheral terminals 36 also to the number of I20, and four groups of terminals 37-40 disposed on circle sectors all passing through the center of plate 35 and offset from one another by 90 degrees. These four circle sectors are the transformed curves by geometric inversion of the sides of an ideal square circumscribed around the circular plate 19.
  • the terminals 36 are connected to the respective terminals 34 of like positions by resistance-free connections.
  • the terminal groups (37, 38), (39, 40) are connected to the poles of a DC power supply in exactly the same way as are the terminal groups (301-320 ,321-340) and (341-355, 361-365) of FIG. I.
  • a result of the known properties of potential in respect of geometric inversion in a plane is that the application of constant potentials to the circle sectors on which the terminal groups (37, 38), (39, 40) are disposed produces the same potential distribution along the circle containing the peripheral terminals 36 as the potential distribution obtainable by the application of a constant potential to the sides of a square circumscribed about the last-mentioned circle. Consequently, the potential distribution along such peripheral terminals is the same as in the case of the circle with the terminals 34 in FIG. 6.
  • FIG. 5 shows how this feature can be provided by electronic ways and means and discloses an electronic relay of a kind such that the controlled circuit is in the closed state when the control circuit is energized by way of 56, 57, whereas the controlled circuit is in the open state when the control circuit is not energized.
  • This is an electronic relay equivalent to the electromechanical relays 7-10 of FIG. 1.
  • connection point equivalent to the contact of an electromechanical relay, is embodied by two transistors 41, 42, transistor 41 being of the PNP type and transistor 42 being of the NPN type; the emitters of both transistors are connected to terminal 43 and the collectors of both transistors are connected to terminal 44, the circuit which it is required to open and close also being connected thereto.
  • Such circuit comprises terminal series 301-320 and 321-340, each series being connected to the terminals 44, 43 respectively via high resistances 60 and a battery 61.
  • a current either flows or does not flow through each transistor 41 or 42 in a particular direction.
  • the relay is in the closed state, one or other of the transistors 41, 4.2 is conductive in the direction of the current flowing in the circuit which it is required to switch. The circuit therefore operates irrespective of which way round the battery 61 is connected.
  • the emitters of transistors 41, 42 are biased via resistances 45, 46, and two diodes 58, 59 protect the transistors against reverse emitter-collector voltages.
  • the control circuit for the connection point is embodied by two transistors 47 48.
  • Transistor 47 is an NPN transistor controlling the PNP-transistor 41
  • transistor 48 is a PNP transistor controlling the NPN-transistor 42.
  • Each control transistor 47, 48 controls via its collector the base of a connection transistor 41, 42 respectively via a respective resistance 49, 50 and a respective diode 51, 52, the latter providing reverse-voltage protection for the transistors 47, 48.
  • Input circuit 57 comprises a network 55 assumed, in the case shown in FIG. 5, to comprise just a single resistance whose ends 53, 54 are taken to the bases of the transistors 47 40 respectively.
  • FIG. 9 refers to the case in which the pencil or pen or the like 12 of FIG. 1 is entirely absent for specific purposes.
  • the writing plate 2 covered with the resistant layer 23 has placed on it a thin flexible transparent sheet or foil or the like 25 which, as a reference 24 indicates, is conductive on its inside surface and which serves as pencil or pen or the like.
  • the sheet 25 can be made e.g. of a polyester known under the trade name of Mylar. Sheet 25 is stretched parallel to the plate 2 and does not contact the same when in the inoperative state. The operator produces contact between layer 23 and layer 24 just by pressing with the finger or any article on sheet 25, the contact being passed to the series-parallel converter 13 shown in FIG. 1.
  • the facility according to the invention has many uses which will be immediately apparent to the man of the art and which relate in general to sequential transmission of the coordinates of the points of any set of graphic data, their display, digitalization, storage and processing as information data.
  • the electric fields are produced by equipotential electrodes.
  • Different potential patterns could of course be used for the outlines of the writing plate; for instance, a resistance calculated to provide the required law or pattern could be inserted in the energization circuit for each terminal
  • the different potential distribution patterns required for the terminals around the plate periphery can be produced by a digital computer to which a corresponding program is supplied and which has an appropriate number of outputs, each output having if necessary a decoder for converting the coded value of a voltage into an analog value.
  • the clock associated with the computer can also serve as the control signal generator 11 of FIG. 1.
  • a graphic data transcription apparatus comprising a writing plate made of an electrically resistant material having a given shape, two pairs of equipotential electrodes each comprising two elements, at least one series of peripheral conductive terminals spaced from one another and each in contact with the writing plate and distributed along a line near the writing-plate periphery; means for applying a constant biasing voltage supplied between two fixed potential points alternately and periodically at a selected repetition frequency between the two elements of one and the other electrode pair, such voltage raising the potential of each of said two elements to a given value relatively to a reference-potential point; switching and connecting means controlled by a control signal generator to alternately and periodically connect at least part of such terminals to said electrode pairs and to produce an electric field on the surface of the writing plate, said series of terminals and said connection means being so disposed that electric fields produced thereby on the writing-plate surface when said series of terminals are consecutively connected to one and the other of said electrode pairs are at right angles to one another; a conductive point probe in bearing contact with and movable on the writing
  • the operative surface of the resistant plate is of rectangular shape and in which two series of terminals are respectively disposed one along each pair of opposite sides of the rectangular periphery of the plate, each such series also forming one of the electrode pairs, when all terminals thereof are connected by direct connections to one of said fixed potential points.
  • the operative surface of the resistant plate is of circular shape and in which all the peripheral terminals are disposed on a circle forming the outline of theoperative surface
  • the two elements of each electrode pair between which said constant biasing voltage is applied being composed of sets of terminals arranged along straight lines disposed around said circle and being connected alternately to all the terminals so as to impart to each terminal a potential which is a function of the angular position of such terminal, through the agency of resistors of appropriate values energized from said electrodes, the distribution of the said resistors at any particular time differing according to which of the electrode pairs is the one which is biased at said particular time.
  • a device comprising two auxiliary electrode pairs each comprising a further series of terminals disposed on a fraction of a circle and energized alternately at a constant potential, an auxiliary system of terminals arranged in a circle, an auxiliary resistant plate in electrical contact with the two auxiliary pairs and with said auxiliary system, and a direct connection between each of said auxiliary system and a corresponding one of the peripheral terminals arranged in a circle on the outline of the resistant plate.
  • one of the electrode pairs consists of two further series of terminals disposed on two radii of a circle and the other electrode pair comprises as one of its elements terminals dis tributed around the periphery of such circle and constituting at the same time said peripheral terminals and as its other element a terminal disposed at the center of said circle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Human Computer Interaction (AREA)
  • Remote Sensing (AREA)
  • Computer Hardware Design (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Recording Measured Values (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
US888381A 1968-12-31 1969-12-29 Graphic data transcription system Expired - Lifetime US3632874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR182840 1968-12-31

Publications (1)

Publication Number Publication Date
US3632874A true US3632874A (en) 1972-01-04

Family

ID=8659795

Family Applications (1)

Application Number Title Priority Date Filing Date
US888381A Expired - Lifetime US3632874A (en) 1968-12-31 1969-12-29 Graphic data transcription system

Country Status (9)

Country Link
US (1) US3632874A (xx)
BE (1) BE743527A (xx)
CH (1) CH504068A (xx)
DE (1) DE1965159B2 (xx)
ES (1) ES375112A1 (xx)
FR (1) FR1601956A (xx)
GB (1) GB1243478A (xx)
NL (1) NL6919641A (xx)
SE (1) SE358498B (xx)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798370A (en) * 1972-04-17 1974-03-19 Elographics Inc Electrographic sensor for determining planar coordinates
US3885097A (en) * 1972-08-11 1975-05-20 Nat Res Dev Graphical input apparatus for electrical apparatus
US3894183A (en) * 1971-06-30 1975-07-08 Benjamin J Barish Stylus actuated electrical devices
US3911215A (en) * 1974-03-18 1975-10-07 Elographics Inc Discriminating contact sensor
US4071689A (en) * 1976-09-27 1978-01-31 Elographics, Incorporated Lucent electrographic sensor for determining planar coordinates
US4220815A (en) * 1978-12-04 1980-09-02 Elographics, Inc. Nonplanar transparent electrographic sensor
US4306110A (en) * 1980-03-07 1981-12-15 The Sierracin Corporation Apparatus for determining planar coordinates
US4442317A (en) * 1981-09-14 1984-04-10 Sun-Flex Company, Inc. Coordinate sensing device
US4456787A (en) * 1982-07-06 1984-06-26 Scriptel Corporation Electrographic system and method
US4523654A (en) * 1983-09-14 1985-06-18 Scriptel Corporation Electrographic system
US4600807A (en) * 1984-10-26 1986-07-15 Scriptel Corporation Electrographic apparatus
US4603231A (en) * 1983-03-31 1986-07-29 Interand Corporation System for sensing spatial coordinates
US4650926A (en) * 1984-10-26 1987-03-17 Scriptel Corporation Electrographic system and method
US4678869A (en) * 1985-10-25 1987-07-07 Scriptel Corporation Position responsive apparatus, system and method having electrographic application
US4777328A (en) * 1987-05-13 1988-10-11 Elographics, Inc. Circular electrographic touch sensor with orthogonal fields and linear response
US5041701A (en) * 1988-03-15 1991-08-20 Carroll Touch Incorporated Edge linearization device for a contact input system
US5251123A (en) * 1987-10-19 1993-10-05 I C Operating, Inc. High resolution system for sensing spatial coordinates
US5736688A (en) * 1995-08-02 1998-04-07 The Graphics Technology Company, Inc. Curvilinear linearization device for touch systems
US5796389A (en) * 1994-08-22 1998-08-18 International Game Technology Reduced noise touch screen apparatus and method
US5818430A (en) * 1997-01-24 1998-10-06 C.A.M. Graphics Co., Inc. Touch screen
US20050260338A1 (en) * 2004-05-19 2005-11-24 Trendon Touch Technology Corp. Method of manufacturing circuit layout on touch panel by utilizing metal plating technology
US20080088601A1 (en) * 2004-05-19 2008-04-17 Tpk Touch Solutions Inc. Circuit layout on a touch panel

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474206B1 (fr) * 1980-01-22 1985-11-08 Anvar Appareil de transcription de graphismes
ATE21291T1 (de) * 1982-11-25 1986-08-15 Preh Elektro Feinmechanik Einrichtung zur erfassung einer x-y-position.
DE3243712A1 (de) * 1982-11-25 1984-05-30 Preh Elektro Feinmechanik Einrichtung zur erfassung einer x-y-position
DE3243679A1 (de) * 1982-11-25 1984-05-30 Preh Elektro Feinmechanik Terminal einer datenverarbeitungsanlage
DE102013019648B4 (de) * 2013-11-22 2019-04-04 Diehl Ako Stiftung & Co. Kg Eingabevorrichtung für ein elektronisches Haushaltsgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565612A (en) * 1947-05-30 1951-08-28 Cossor Radar Ltd Writing telegraph system
US2704305A (en) * 1954-06-09 1955-03-15 Donald J Mclaughlin Resistive surface voltage divider network
DE1080592B (de) * 1958-12-19 1960-04-28 Grundig Max Verfahren und Einrichtung zur Fernuebertragung von Bewegungsvorgaengen in einer ebenen Flaeche
US3522664A (en) * 1967-11-20 1970-08-04 Westinghouse Electric Corp Interface device and display system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565612A (en) * 1947-05-30 1951-08-28 Cossor Radar Ltd Writing telegraph system
US2704305A (en) * 1954-06-09 1955-03-15 Donald J Mclaughlin Resistive surface voltage divider network
DE1080592B (de) * 1958-12-19 1960-04-28 Grundig Max Verfahren und Einrichtung zur Fernuebertragung von Bewegungsvorgaengen in einer ebenen Flaeche
US3522664A (en) * 1967-11-20 1970-08-04 Westinghouse Electric Corp Interface device and display system

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894183A (en) * 1971-06-30 1975-07-08 Benjamin J Barish Stylus actuated electrical devices
US3798370A (en) * 1972-04-17 1974-03-19 Elographics Inc Electrographic sensor for determining planar coordinates
US3885097A (en) * 1972-08-11 1975-05-20 Nat Res Dev Graphical input apparatus for electrical apparatus
US3911215A (en) * 1974-03-18 1975-10-07 Elographics Inc Discriminating contact sensor
US4071689A (en) * 1976-09-27 1978-01-31 Elographics, Incorporated Lucent electrographic sensor for determining planar coordinates
US4220815A (en) * 1978-12-04 1980-09-02 Elographics, Inc. Nonplanar transparent electrographic sensor
US4306110A (en) * 1980-03-07 1981-12-15 The Sierracin Corporation Apparatus for determining planar coordinates
US4442317A (en) * 1981-09-14 1984-04-10 Sun-Flex Company, Inc. Coordinate sensing device
US4456787A (en) * 1982-07-06 1984-06-26 Scriptel Corporation Electrographic system and method
US4603231A (en) * 1983-03-31 1986-07-29 Interand Corporation System for sensing spatial coordinates
US4523654A (en) * 1983-09-14 1985-06-18 Scriptel Corporation Electrographic system
US4650926A (en) * 1984-10-26 1987-03-17 Scriptel Corporation Electrographic system and method
US4600807A (en) * 1984-10-26 1986-07-15 Scriptel Corporation Electrographic apparatus
US4678869A (en) * 1985-10-25 1987-07-07 Scriptel Corporation Position responsive apparatus, system and method having electrographic application
US4777328A (en) * 1987-05-13 1988-10-11 Elographics, Inc. Circular electrographic touch sensor with orthogonal fields and linear response
US5251123A (en) * 1987-10-19 1993-10-05 I C Operating, Inc. High resolution system for sensing spatial coordinates
US6175773B1 (en) 1987-10-19 2001-01-16 Lg Electronics, Inc. High resolution system for sensing spatial coordinates
US5041701A (en) * 1988-03-15 1991-08-20 Carroll Touch Incorporated Edge linearization device for a contact input system
US5796389A (en) * 1994-08-22 1998-08-18 International Game Technology Reduced noise touch screen apparatus and method
US6476798B1 (en) 1994-08-22 2002-11-05 International Game Technology Reduced noise touch screen apparatus and method
US6734843B2 (en) 1994-08-22 2004-05-11 Igt Reduced noise touch screen apparatus and method
US5736688A (en) * 1995-08-02 1998-04-07 The Graphics Technology Company, Inc. Curvilinear linearization device for touch systems
US5818430A (en) * 1997-01-24 1998-10-06 C.A.M. Graphics Co., Inc. Touch screen
US20050260338A1 (en) * 2004-05-19 2005-11-24 Trendon Touch Technology Corp. Method of manufacturing circuit layout on touch panel by utilizing metal plating technology
US20080088601A1 (en) * 2004-05-19 2008-04-17 Tpk Touch Solutions Inc. Circuit layout on a touch panel

Also Published As

Publication number Publication date
SE358498B (xx) 1973-07-30
DE1965159A1 (de) 1970-07-16
SU441725A3 (ru) 1974-08-30
NL6919641A (xx) 1970-07-02
DE1965159B2 (de) 1971-09-09
GB1243478A (en) 1971-08-18
BE743527A (xx) 1970-05-28
CH504068A (fr) 1971-02-28
FR1601956A (xx) 1970-09-21
ES375112A1 (es) 1972-03-16

Similar Documents

Publication Publication Date Title
US3632874A (en) Graphic data transcription system
EP0186464B1 (en) Electrographic touch sensor
US3399401A (en) Digital computer and graphic input system
EP0112906B1 (en) Electrographic system and method
US3466646A (en) Analog position to binary number translator
GB2046450A (en) Apparatus for detecting x and y coordinates of input points
US3696408A (en) Keyboard encoder
GB1010583A (xx)
US4126760A (en) Position indicators
US3524998A (en) Resistive conversion device
GB1597375A (en) Graphical input apparatus for electrical equipment
US4178481A (en) Electrical data entry devices
US3560675A (en) Depressible diaphragm overlay switch for displays
GB1498074A (en) Electric resistance heating devices
US3865977A (en) System for identifying the position of a stylus
JPS5647878A (en) Pressure sensitive handwriting graphic input device
DE3243712A1 (de) Einrichtung zur erfassung einer x-y-position
JPS605008B2 (ja) スイッチ断接型座標入力装置
GB1363919A (en) Variableresistance control devices and resisitance elements for use in such devices
JPS5611582A (en) Coordinate input unit
JPS605009B2 (ja) 抵抗膜分割型座標入力装置
JPS58155487A (ja) 図形入力装置
SU402032A1 (ru) УСТРОЙСТВО дл ВВОДА ГРАФИЧЕСКОЙ ИНФОРМАЦИИ
JPS63208923A (ja) 手書き入力装置
JPS59201327A (ja) 網状複合スイツチ