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| Number | Title | Issue Date |
| 7358964 | Electromagnetic inductive system with multi-induction loop layout and battery less pointer device and its method for locating the coordinate A multi-induction loop layout of an electromagnetic inductive system is disclosed. The multi-induction loop layout of the invention comprises a plurality of inductive loops, one terminal of each inductive loop connecting to a loop switch, and the other terminal conn... | 04/15/2008 |
| 7293231 | Data entry for personal computing devices In one aspect of the invention, the user can rapidly enter and search for text through a combination of entering one or more characters (a partial text entry) on a digitally displayed keyboard with a pointing device and using a search list to display a list of selec... | 11/06/2007 |
| 7284209 | Managing position and size for a desktop component In a graphical desktop environment displaying desktop components, a control is provided to track the position of a pointer on a screen, and when the pointer enters relevant regions with respect to a desktop component, a thin or thick border in displayed around the d... | 10/16/2007 |
| 7265303 | Electromagnetic digitizer sensor array An electromagnetic digitizer arrangement that may include a comb-like pattern of sensing traces that form various sensing loops depending upon the configurations of various switches is described. The comb arrangement of traces may be fabricated using only a single l... | 09/04/2007 |
| 7215330 | Touch-sensitive surface which is also sensitive to pressure levels This sensitive surface comprises two films (2, 4) facing each other and means for keeping these two films a certain distance apart when no pressure is exerted on the surface. Each film (2, 4) has, on its face turned toward the other film: ... | 05/08/2007 |
| 7203384 | Implement for optically inferring information from a planar jotting surface The present invention relates to a jotting implement that infers hand-jotted information from a jotting surface. The hand-jotted information is any information marked on the jotting surface as a result of writing, jotting, drawing, sketching or in any other manner o... | 04/10/2007 |
| 7193618 | Electronic ink ball point pen with memory An electronic pen for recording motion data relating to use of the pen. It includes a pen body and a ball mounted in the pen body. A sensor in the pen body, located proximate the ball, detects motion of the ball and converts the motion into corresponding electronic ... | 03/20/2007 |
| RE39475 | Digitizer having flat tablet with magnetic shield plate A digitizer for determining coordinate value of a point designated on a given two-dimensional coordinate plane. A pointing instrument is manually operable to designate a point on the given two-dimensional coordinate plane of a tablet. The tablet includes a flat sens... | 01/23/2007 |
| 7095183 | Control system for a resonant inverter with a self-oscillating driver A controller for a resonant inverter with a self-oscillating driver IC for powering AC loads, such as gas discharge lamps or regulated DC/DC converters, includes a timing circuit that generates control strobe pulses that are injected into the timing circuit. The tim... | 08/22/2006 |
| 7084860 | Method and apparatus for a touch sensitive system employing direct sequence spread spectrum (DSSS) technology A touch sensing apparatus for receiving input from one or more touch stimulating devices employs a direct sequence spread spectrum (DSSS) signaling arrangement to transmit signals from the touch stimulating devices for identification and location determination. Acti... | 08/01/2006 |
| 6998644 | Display device with an array of display drivers recessed onto a substrate Apparatuses and methods for forming displays are claimed. One embodiment of the invention relates to dispensing display drivers over a substrate. The display drivers, for example, may be a plurality of emitters and gates in order to form a display such as a field em... | 02/14/2006 |
| 6952880 | Measurement and marking device A measurement and marking device includes a housing, a positional sensing assembly mounted in the housing, a printhead assembly mounted in the housing, and a controller mounted in the housing and communicating with the positional sensing assembly and the printhead a... | 10/11/2005 |
| 6950067 | Recording/playback apparatus with electric wave transmission A recording/playback apparatus which accommodates in a cassette shell a recording medium and which performs recording and/or playback with respect to the recording medium cassette provided with a cassette-side antenna connected to an in-cassette memory recording inf... | 09/27/2005 |
| 6903730 | In-air gestures for electromagnetic coordinate digitizers A technique is disclosed for detecting an in-air gesture made by a digitizing pen above a digitizing writing surface. When the digitizing pen is determined to be in motion above the digitizing writing surface, positional information of the digitizing pen with respec... | 06/07/2005 |
| 6731270 | Piezoelectric transducer for data entry device A piezoelectric transducer is provided, in which a piezoelectric shell has conductive layers on the outside and inside of the shell, which are adapted to be connected to a signal input source. When the conductive layers are activated, the piezoelectric layer resonat... | 05/04/2004 |
| 5907130 | Portable input/output device An electronic pen has a body frame in a rod-like or pillar-like shape with an input mechanism and an output mechanism respectively on each end. A slope detecting mechanism changes a circuit system corresponding to the slant state of the body frame of the ... | 05/25/1999 |
| 5877459 | Electrostatic pen apparatus and method having an electrically conductive and flexible tip An electrostatic pen is disclosed wherein the pen's tablet engaging tip is both electrically conductive and flexible, thus providing an increasing tip contact area to a digitizing tablet as the tip of the manually held pen is pressed downward onto the tab... | 03/02/1999 |
| 5693914 | Digitizer and method of detecting positions A digitizer for use as an input device for a computer system is provided. The digitizer is of the passive type, having a coordinate board for use as an input board which does not include any power sources or active circuit elements. In the coordinate boar... | 12/02/1997 |
| 5691512 | Position transducer, and method for eliminating noise therefrom A position transducer, and a noise elimination method for eliminating a noise component included in a received signal of the position transducer irrespective of the frequency band of the noise component. A position transducer calculates coordinates of a p... | 11/25/1997 |
| 5679930 | Position pointing device including a controller for an AC field emitter in accordance with a binary code A position pointing device codes information corresponding to an operation expressed by a continuously variable parameter without using an A/D converter and transmits the coded information to a position detecting device. The information corresponding to t... | 10/21/1997 |
| 5672852 | Position pointing device including a memory and a position detecting device coupled by AC fields to the pointing device A position detecting device and a position pointing device therefor transmit information concerning the position pointing device or an operator from a cordless position pointing device to a tablet. An AC field containing information about the position poi... | 09/30/1997 |
| 5661269 | Position pointing device having resonant circuit with sequentially changed characteristics and combination thereof with position detecting device A position pointing device for use with a digitizing tablet sequentially transmits plural different kinds of non-positional information to the tablet. The position pointing device varies a resonance characteristic of a resonance circuit in accordance with... | 08/26/1997 |
| 5600105 | Position detecting device and position pointing device therefor A position detecting device and a position pointing device therefor, which are capable of sending various types of instructions from a tablet to a cordless position pointing device, thus controlling the operation thereof. The tablet is equipped with an in... | 02/04/1997 |
| 5554828 | Integration of pen-based capability into a field emission device system A field emission device pen-based system comprising a pen stylus 20 and a field emission device having a cathode 2 coupled to an anode 1, row and column drivers 68 and 66 coupled to the cathode and to a controller 64, row and column lines 96 and 98 respec... | 09/10/1996 |
| 5528002 | Noiseproof digitizing apparatus with low power cordless pen A noiseproof digitizing apparatus for digitizing the coordinates of a point on a tablet having grid conductors disposed along X and Y coordinate axes includes a cordless pen having a conductive end for transmitting an electrical signal to the grid conduct... | 06/18/1996 |
| 5130500 | Digitizer having flat tablet with magnetic shield plate A digitizer for determining coordinate value of a point designated on a given two-dimensional coordinate plane. A pointing instrument is manually operable to designate a point on the given two-dimensional coordinate plane of a tablet. The tablet includes ... | 07/14/1992 |
| 5012049 | Position determining apparatus An apparatus for precisely locating the position of a transmitter either along a line, or a surface, or within a three dimensional space. More particularly the apparatus of the invention is adapted for use with a computer and includes a pen sized movable ... | 04/30/1991 |
| 4988837 | Position detecting device The position on a surface of an implement including a tuned circuit with a predetermined resonant frequency is determined and displayed by an apparatus having a housing including the surface. A tablet in the housing includes coils arranged in two coordina... | 01/29/1991 |
| 4975546 | Rotation and displacement sensing apparatus A position sensing apparatus that can be used with a compatible digitizing tablet to generate positional and rotational information. The apparatus contains two mutually perpendicular windings which are fed with AC waveforms on phase quadrature. The magnet... | 12/04/1990 |
| 4794209 | Position coordinate determining apparatus An apparatus suitable for measuring coordinate positions of points in a wide range of coordinate read area on a plane. The apparatus includes a cursor, a cursor drive circuit for supplying an alternate current signal to the cursor, a coordinate read devic... | 12/27/1988 |
| 4794208 | Frequency shifting digitizer for reducing AC fields interference A digitizer wherein the transduction frequency is controlled (automatically or manually) to minimize the interference effect of sources of external AC fields, such as CRT monitors. The digitizer implements the method of operation comprising the steps of, ... | 12/27/1988 |
| 4786765 | Coordinates input system Disclosed is a coordinates input system having a tablet constituting a coordinates input portion, a position designating device such as a stylus pen, and a position detection circuit adapted to drive said tablet and detect a position at which coordinates ... | 11/22/1988 |
| 4649232 | Electrographic apparatus An electrographic apparatus and system utilizing a resistive layer having an active area which operates in conjunction with a stylus or tracer or other suitable position locator. An a.c. source or alternatively a signal treatment means is connected to the... | 03/10/1987 |
| 4638119 | Position indicating apparatus for use in a digitizing tablet system A position indicating implement is disclosed having a first coil connected to a current source and a second coil inductively coupled with the first coil. A capacitor is connected in series with the second coil so that the current in the first coil induces... | 01/20/1987 |
| 4603231 | System for sensing spatial coordinates A system for sensing the spatial position of a moveable object with respect to an energized conductive surface whereby the spatial coordinates of the object are determined. The system provides a means of accurately measuring the coordinates of the object ... | 07/29/1986 |
| 4554409 | Method of electromagnetically reading coordinate data In an electromagnetic type digitizer system having a cursor coil and a tablet, the cursor position can be determined accurately by much a simplified method which basically uses a distribution curve of electromotive force induced by the cursor coil in the ... | 11/19/1985 |
| 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 electrical signals. Through the utilization of a sequence of borde... | 06/18/1985 |
| 4275264 | Portable hand-held length probe with tracing-unit-actuated length signal output control switch A portable hand-held length probe with a length measuring wheel and a tracing unit which is mounted adjacent the wheel and is movable by pressing the tracing unit against a surface to be measured. A wheel movement indicative output signal is effected as f... | 06/23/1981 |
| 4243843 | Coarse position digitizer A method and apparatus for determining graphical coordinates includes a grid of parallel spaced conductors, a switch in series with each conductor, a cursor having an alternating magnetic field for inducing an electric current in conductors over which it ... | 01/06/1981 |
| 4227044 | Pen status system for digitizer pen A pen status indicating system for a digitizer pen utilized in conjunction with a digitizer having a grid of spaced conductors positioned beneath a writing surface. The digitizer includes an electronic system which scans the spaced conductors and senses s... | 10/07/1980 |
