Matches 201 - 250 out of 306 < 1 2 3 4 5 6 7 >
Match Document Document Title
4644101 Pressure-responsive position sensor  
Electrical signals are produced by a pressure-responsive device, such signals being indicative of the position of locally applied pressure. The device comprises a position sensor assembly which...
4638118 Writing pad  
A writing pad in which a grid of electrical elements defines an array of discrete locations on the writing surface with a density of at least 100×50=5000 locations per square inch, and digital...
4622437 Method and apparatus for improved electronic touch mapping  
An improved touch-panel and method of increasing the percentage of useful area of a touch-sensitive panel include electrode elements in electrical communication with an electrically conductive...
4620062 Device for forming signals which are characteristic of the position of a point determined on a surface  
The device consists of two superimposed substrates (1 and 5) each carrying a grid of orthogonal conductive tracks (2 and so forth) facing each other from grid to grid and kept at a distance from...
4616106 Graphic tablet and method  
A writing tablet system is disclosed incorporating a plurality of parallel conductors imbedded beneath the surface thereof arranged in two groups in orthogonal relationship with respect to each...
4603230 Graphical input terminal  
A graphical input terminal for generating an electrical signal representative of a location on an input surface, with respect to a pair of coordinates, in which a character, figure or like...
4602126 Two-dimensional coordinate detecting apparatus  
A two-dimensional coordinate detecting apparatus for use, e.g. over a CRT screen, is arranged such that a potential gradient layer is spaced from a detector layer, one of which is formed of a...
4600807 Electrographic apparatus  
An electrographic apparatus utilizing a resistive layer which operates in conjunction with a stylus or tracer. Either the resistive layer or the cursor may be excited from an a.c. source to develop...
4575581 Digitizer and position encoders and calibration system for same  
Digitizer incorporates two novel position encoders. One position encoder comprises means for periodic spatial calibration against an accurate pattern of reference marks, thereby improving accuracy...
4575580 Data input device with a circuit responsive to stylus up/down position  
A data input device includes a pair of resistive sheets positioned so as to overlap one another to define a common writing area. These sheets are separated from one another by a layer of material...
4571577 Method and apparatus for determining the coordinates of a point on a surface  
A screen is disclosed on the surface of which a certain number of resistant conducting emitter strips and insulated conducting receiver strips are laid, the emitter strips being parallel-mounted...
4570149 Simplified touch tablet data device  
A touch tablet is provided containing two sheets of insulating material each of which contains a plurality of spaced apart conductive lines. A resistive strip on each sheet contacts and connects...
4568798 X-Y Position detector  
An x-y position detector is shown which comprises a pen and contact plate with a resistive layer formed thereon. Point electrodes are provided on the four sides of the resistive layer. The...
4558757 Position coordinate input device  
A position coordinate input device including an input plate subjected, at a point, to an external force with a finger, etc. so as to input data of coordinates of the point into a computer and the...
4523654 Electrographic system  
An electrographic system utilizing a transparent resistive layer which operates in conjunction with a stylus or cross hair cursor excited from an a.c. source to develop coordinate defining...
4504700 Input device  
A new and efficient input device of an electrode contact type which has a high mechanical strength and durability and can assure accurate detection of coordinates. The input device comprises an...
4503416 Graphite fiber tactile sensor  
A layer of carbon fiber materials sandwiched between two conductive layers provides a tactile feedback sensor which is particularly useful in manipulator systems for robotics and assembly automation.
4493104 Character recognition device  
This invention is concerned with a character recognition device which includes a writing pad having a pair of sheets with one of the sheets comprising an area of high resistivity and the other one...
4492819 Graphic tablet and method  
A writing tablet is disclosed incorporating a plurality of conductors imbedded beneath the surface thereof in orthogonal relationship with respect to each other. The conductors form a grid for...
4484026 Touch tablet data device  
A touch tablet for use in entering data into a computer or graphics display device comprises a first four-sided sheet containing a resistive material on one surface thereof, a second four-sided...
4475008 Coordinate input device with pressure-sensitive rubber sheet  
In a coordinate input device which comprises a resistance plate and a pressure-sensitive rubber sheet placed on the resistance plate so that DC voltage is alternately applied to the resistance...
4471270 Particle-impact localizing device, a cathode-ray oscilloscope and a pick-up tube comprising such a device  
This device comprises several charge-transfer shift registers integrated on the same semiconductor substrate and disposed one above the other along the axis Oy. The charge-transfer electrodes are...
4456787 Electrographic system and method  
An electrographic system utilizing a singular resistive layer which may be transparent in conjunction with a supportive substrate. Through the use of an electromagnetic field generating sytlus in...
4444998 Touch controlled membrane for multi axis voltage selection  
A touch controlled membrane device producing an output signal which is a function of any dual coordinate location resulting from an applied pressure in a two dimensional resistive field. In one...
4442317 Coordinate sensing device  
A coordinate sensing device uses electric currents to energize a conducting member which has a major surface and preferably is made of mesh material. Electrical currents are sequentially applied to...
4435616 Graphical data entry apparatus  
Improvements in graphic tablets employing resistance planes are disclosed including one or more of the following: a tablet usable both by depression and by capacitive probe, reference connections...
4419672 Point locator and graphics digitizer system  
A system for accurately locating upon a surface any number of finite points, recording those locations together with such additional information as is desired to be applied to the surface, and then...
4371746 Edge terminations for impedance planes  
Edge terminations for polygonal impedance or resistance surfaces provide linearization of current flow to and/or from the surface through electrical connections at the vertices of the polygon. The...
4319078 Apparatus for detecting X and Y coordinates of input points  
The input surface of the apparatus for detecting X and Y coordinates of the input points comprises a first parallel electrode group, a second flexible parallel electrode group opposing and...
4306110 Apparatus for determining planar coordinates  
A pair of overlapping, normally spaced conductive sheets (16,18) have sufficient flexibility between them to permit electrical contact when touched. One sheet has spaced, approximately parallel...
4296406 Pressure sensitive switch structure  
The present invention switch comprises a pair of electrodes separated by resilient resistive material which changes resistance several orders of magnitude in response to light pressure. Sensing and...
4293734 Touch panel system and method  
A general method is disclosed for accurately determining the location or position of a source or sink of electric current on the surface of a resistance element or impedance layer. Touch panels are...
4242676 Interactive device for data input into an instrument of small dimensions  
The device according to the invention comprises a sensor formed by a plurality of capacitive or resistive electrodes. The user searches the symbol to be selected by displacing his finger on the...
4220815 Nonplanar transparent electrographic sensor  
An electrographic sensor for the generation of coordinate signals corresponding to contacted positions on the sensor is described. This sensor is of particular value for placing in intimate contact...
4214122 Resistive planar graphical entry device  
In a resistive planar graphic device, conductor strips are divided into two segments and corner resistances interconnect outer ends of the conductor strips which extend in spaced relationship along...
4198539 System for producing electric field with predetermined characteristics and edge terminations for resistance planes therefor  
A system is described for coupling two voltage sources to a resistive plane, surface or layer so as to produce a uniform electric field in said plane with orthogonal components along the two axes...
4178481 Electrical data entry devices  
Planar resistive connecting means for the edges of a rectangular resistive graphic area has a higher effective resistance parallel to the edges of the resistive graphic area than that of the...
4129747 Human-machine interface apparatus  
A human-machine interface apparatus includes a first, or phase, surface with associated circuitry so devised that an alternating electrical field is created above the surface with its phase,...
4129746 Electrographic apparatus and hand rest for use therewith  
Electrographic apparatus, that is apparatus for obtaining electrical signals related to the movement of a point, such as a pen or stylus, over a pressure sensitive surface. The apparatus comprises...
4126760 Position indicators  
A graphical input tablet is described which is made up of layers of flexible material. The edges of planar conductors on the surfaces of the layers divide the layers into zones, with each layer...
4080514 Graphical input apparatus for electrical equipment  
Two improvements are disclosed for a known graphical input tablet employing a resistive sheet stretched across, but spaced from, a resistive member, wherein the co-ordinates of a point are...
4079194 Graphical data entry pad  
A data entry pad for the entry of two-dimensional graphical data to a communication system includes a resistive grid area to which a conductive layer may be selectively contacted so that graphical...
4071691 Human-machine interface apparatus  
A human-machine interface apparatus includes a first, or phase, surface with associated circuitry so devised that an alternating electrical field is created above the surface with its phase,...
4070544 Electrographic apparatus and method of producing an electrode surface therefor  
Electrographic apparatus, that is apparatus for obtaining electrical signals related to the movement of a point, such as a pen or stylus, over a pressure sensitive surface, and a method of...
4055726 Electrical position resolving by zero-crossing delay  
Position responsive apparatus is disclosed comprising a sheet of uniform resistivity having four electrodes in contact therewith around a rectangular area. One pair of parallel electrodes are...
4013835 Data entry system  
A novel data entry system is disclosed which comprises both a touch sensitive device and a location identification device. The touch sensitive device includes a printed circuit board arrangement of...
4001677 Device for the electrical determination of two-dimensional co-ordinates of a point  
A device for the electrical determination of two-dimensional coordinates of a point employs a plate and a scanning device. The plate is in the form of a resistance layer comprising material having...
3959585 Graphical input terminal  
A graphical input terminal includes a pair of resistive sheets separated by an air gap. An energizing voltage is alternately applied to each sheet while an output voltage representative of the...
3944740 Coordinate position information output device  
A coordinate position information output device is disclosed in which the impedance at a position addressed by a contact pen, a light pen, a magnetic pen or the like is varied; a forward current is...
3911215 Discriminating contact sensor  
A sensor construction is described for normally maintaining two juxtaposed electrical potential carrying sheets, at least one being flexible, separated from each other but permitting contact...
Matches 201 - 250 out of 306 < 1 2 3 4 5 6 7 >