Matches 101 - 150 out of 158 < 1 2 3 4 >
Match Document Document Title
6075520 Small current detector circuit and locator device using the same  
The improved small current detector circuit and locator device each include a first and a second capacitor, a pulse drive circuit which drives one terminal of each capacitor by a pulse signal and...
6005555 Position detecting apparatus and method for detecting position pointing device  
A position detecting apparatus capable of detecting position pointing devices of any combination simultaneously out of plural position pointing devices, thereby providing a user a friendly...
6002389 Touch and pressure sensing method and apparatus  
The present invention provides a touch pad which can detect a simply stylus using a change capacitance. The touch pad is made flexible, so that the stylus pressure compresses an insulating layer...
5959260 Method for entering handwritten information in cellular telephones  
A cellular telephone (100) has a receiver (506) and a transmitter (508) and a detachable battery (106) retrofitted for entering handwritten information and for providing power to the cellular...
5942733 Stylus input capacitive touchpad sensor  
A capacitive touch pad comprises a substrate material, such as a PC board type laminate material, having a plurality of first parallel conductive traces running in a first (X) direction disposed on...
5929834 Liquid crystal display device with tablet  
A liquid crystal display device with a tablet reduced in apparatus thickness and enhanced in display visibility. The liquid crystal display device mainly composed of a liquid crystal display upper...
5926171 Coordinate data input device  
A coordinate data input device comprises: a sensing board fabricated by forming a plurality of parallel first electrodes on the front surface of a film and forming a plurality of parallel second...
5920309 Touch sensing method and apparatus  
Method and apparatus for sensing the simultaneous proximity of one or more fingers or other appropriate objects to a capacitive touch sensor. A modulator/demodulator pair drive and sense either a...
5914708 Computer input stylus method and apparatus  
A system comprising a conductive stylus used in conjunction with a capacitance sensitive touch pad, said system providing at least two different signals to an associated computer system. The stylus...
5914465 Object position detector  
A proximity sensor system includes a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance changes as a function of...
5902967 Method and apparatus for eliminating an offset signal in an electrostatic digitizing tablet  
A method and apparatus for detecting when a second object touches a digitizing panel while a first object is touching the digitizing panel is disclosed. The method includes the steps of generating...
5898136 Position detecting apparatus having a tablet and a position pointing device  
A position detecting apparatus includes a position point device and a tablet. The position pointing device has a simple configuration as well as an easy way of adjusting a resonance frequency,...
5889236 Pressure sensitive scrollbar feature  
A proximity sensor system includes a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance changes as a function of...
5886687 Touch panel system utilizing capacitively-coupled electrodes  
A touch screen system includes a touch screen having a surface which is adapted to be touched by a user, a resistive substrate which spans the screen and has two opposite boundaries, and a pair of...
5861875 Methods and apparatus for data input  
Methods and apparatus for data input. Devices are provided in accordance with this invention which utilize capacitive coupling of an object to the device to sense the object's position. The devices...
5861583 Object position detector  
An object proximity sensor includes a capacitive touch-sensitive transducer including row conductive lines insulated from column conductive lines to from a matrix. An insulating layer is disposed...
5854625 Force sensing touchpad  
A force sensing touchpad comprises a substantially rigid touch surface; a substantially rigid frame; a plurality of spring structures formed integrally with the touch surface and mechanically...
5841427 Method and apparatus for canceling an offset signal in an electrostatic digitizing tablet  
A method and apparatus for generating an output signal in a digitizer. The method includes the steps of generating a first signal when a user contacts a sensor panel wherein the first signal has a...
5841078 Object position detector  
A proximity sensor system includes a sensor matrix array having a characteristic capacitance between horizontal and vertical conductors connected to sensor pads. The capacitance changes as a...
5801682 Tactile designation device with high-resolution transparent capacitive surface  
A tactile designation device comprises a continuous transparent capacitive surface supported at its corners by flexible strips to which there are attached strain gauges, a HF supply source, a...
5790107 Touch sensing method and apparatus  
Method and apparatus for determining small variations in capacitance, typically in a capacitive touch sensing device, includes a reference signal of a first frequency and a sample signal of a...
5790106 Coordinate input apparatus with pen and finger input detection  
A coordinate input apparatus which performs an input operation with high precision by use of either an operator's finger or an input pen. The input apparatus includes a tablet having a plurality of...
5650597 Capacitive touch sensor  
The present invention relates to a capacitive touch sensor including a plurality of horizontal sensor bars arranged in a single direction. The touch sensor preferably receives differential sensor...
5642134 Integrated tablet device having position detecting function and image display function  
A coordinate defining signal is applied to an counter electrode in a period different from a writing period of voltages to pixel electrodes, and detected by way of an electrostatic capacitive...
5579036 Touch screen device and shielding bracket therefor  
A bracket for shielding a capacitive touch screen from external noise arising from stray capacitance comprises upper and lower complementary rectangular conductive metal shield elements which are...
5565658 Capacitance-based proximity with interference rejection apparatus and methods  
Apparatus and method for a capacitance-based proximity sensor with interference rejection. A pair of electrode arrays establish a capacitance on a touch detection pad, the capacitance varying with...
5543588 Touch pad driven handheld computing device  
A handheld computing device comprises a thin enclosure having two opposing major faces. A display screen is disposed on a first one of the major opposing faces of the enclosure and a...
5541371 Palpably controllable digital plate  
A cost-effective and/or convenient digital plate being palpably controllable is provided. The digital plate includes an induction plate capable of inducing a change of a parameter when in contact...
5528267 Tablet integrated with display  
A tablet integrated with a display comprising a matrix panel having row and column electrodes, a detecting conductor, a row electrode driver, a column electrode driver, a row coordinate detecting...
5495077 Object position and proximity detector  
A proximity sensor system includes a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance changes as a function of...
5488204 Paintbrush stylus for capacitive touch sensor pad  
A proximity sensor system includes a touch-sensor pad with a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance...
5457289 Frontally shielded capacitive touch sensor system  
A frontally shielded capacitive touch sensor system includes a capacitive touch sensor having a touch sensitive surface; a front shield mounted in front of the touch sensor and extending...
5369228 Data input device with a pressure-sensitive input surface  
A data input device having an arrangement of deformable layers including at least a dielectric material above a resistive layer. The material is elastically deformable so that, when pressure is...
5225636 Apparatus and method for digitizer point sampling and validation  
An apparatus and method for digitizer sampled point validation which compares charge and discharge voltages across a capacitive element within the digitizer or a filter coupled between the...
5181030 Input system including resistance film touch panel and pushed position detecting device  
An input system including a resistance film touch panel and a pushed position detecting device for detecting two-dimensional coordinates of a pushed position of a touch panel based on surface...
5149919 Stylus sensing system  
An improved stylus detection system for use on the surface of a display device. An overlay having horizontal and vertical transparent conductors is coupled to other elements of the systems through...
5124509 Digitizer with capacitive and inductive coupling  
A battery powered oscillator in a freely movable pointer drives a coil and a divider. A grid of spaced conductors in a base unit is inductively coupled to the coil. A conductive plate that lies...
5041820 Cursor device for a capacitive coupling tablet  
A cursor device for a capacitive coupling tablet used as a digitizer for inputting a figure or pattern. An index indicative of a coordinate position on a tablet to be input is displayed on a pane...
4977397 Touch-control computer house  
A touch-control mouse provides rapid and accurate control of the positioning of a cursor on a computer display screen, and includes a laminated touch-control film assembly, an aluminum supporting...
4806709 Method of and apparatus for sensing the location, such as coordinates, of designated points on an electrically sensitive touch-screen surface  
A method and apparatus are disclosed for determining the location of a designated point on an electrically sensitive touch-screen surface while minimizing aberrations introduced by non-uniformity...
4631355 Telautograph system  
The position (XY coordinate) of a pointed stylus on a conductive sheet is determined by injecting current from the stylus into the sheet and measuring the current responses at three or more spaced...
4616107 Pattern input apparatus  
Disclosed is a pattern input apparatus in which an input pen is made to be in contact with a tablet having a matrix composed of sets of conductors disposed at intervals along coordinate axes,...
4550221 Touch sensitive control device  
A touch sensitive control device translates touch location into output signals. The device includes a substrate which supports first and second interleaved, closely spaced, nonoverlapping arrays of...
4520357 Electroscopic information display and entry system with writing stylus  
Information is written into a matrix-addressed electroscopic display by means of a writing stylus having a magnetic tip, utilized to attract a moveable plate electrode in a selected one of the...
4482784 Position determination device  
A position determining device has two perpendicular longitudinal magnetostrictive elements. A grid of a plurality of closed loop conductors has two parallel straight legs which form the grid. A...
4475235 Signature verification sensor  
A sensor having a particular application in the field of signature verification is disclosed. In the presently preferred embodiment, two plates are disposed in a spaced apart relationship and...
4455452 Touch activated controller for generating X-Y output information  
A touch activated control unit and system provides control information representative of, and in response to, movement of a person's finger along each of two axes defined on the unit. The control...
4264903 Capacitive touch control and display  
A control for use upon a solid panel, devoid of control shaft apertures, allows data entry by rotational positioning of a human member, such as one's finger, about a pattern of a plurality of...
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...
4194083 Capacitively coupled tablet  
A capacitively coupled tablet for use with a probe comprises two sets of conductors spaced apart along coordinate axes to form a matrix, and an overlay disposed above the conductors and forming a...
Matches 101 - 150 out of 158 < 1 2 3 4 >