Matches 1 - 29 out of 29
Match Document Document Title
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
4088842 Automatic coordinate determining device  
A device for detecting position coordinates of patterns such as graphs and characters which are plotted on a drawing media. The device includes a tablet on which a plurality of conductive lines are...
3699253 COORDINATE DETERMINING DEVICE EMPLOYING A SECOND ORDER DIFFERENCE SIGNAL TO DETERMINE APPROXIMATE CURSOR POSITION  
Cursor position is determined by providing three signals that vary cyclically at different rates in response to cursor position. The three provided signals are used to provide two first order...
3668313 RESISTIVE GRID GRAPHIC DATA TABLET  
A two-dimensional graphic data entry tablet for transforming a positional information into a digital input to a computer system. The tablet structure consists of two continuous resistance lines...
3106707 Conducting data take-off pencil  
2919305 Telautograph system  
Matches 1 - 29 out of 29