Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7061475 | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves A touch sensor comprising an acoustic wave transmissive medium having a surface; a plurality of acoustic wave path forming systems, each generating a set of incrementally varying paths through said transmissive medium; and a receiver, receiving signals representing ... | 06/13/2006 |
| 6723929 | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves A touch sensor comprising an acoustic wave transmissive medium having a surface; a plurality of acoustic wave path forming systems, each generating a set of incrementally varying paths through the transmissive medium; and a receiver, receiving signals representing t... | 04/20/2004 |
| 6636201 | Acoustic touchscreen having waveguided reflector arrays An acoustic touchscreen (1a) has transmitting transducers (23a, 23b) for generating acoustic signals which are deflected across a touch-sensitive area (2) by an array 13 of partially acoustically reflective elements 14. A touch on the touch-sensitive area... | 10/21/2003 |
| 6630929 | Adaptive frequency touchscreen controller A method and apparatus for adapting an acoustic touchscreen controller to the operating frequency requirements of a specific touchscreen are provided. The adaptive controller can either utilize look-up tables to achieve the desired output frequency or the... | 10/07/2003 |
| 6506983 | Algorithmic compensation system and method therefor for a touch sensor panel A general method is described for producing an inexpensive touchscreen system that provides accurate positional information and compensates for manufacturing variations without complicated sensor arrangements. Utilizing a set of sensed signals that are un... | 01/14/2003 |
| 6504530 | Touch confirming touchscreen utilizing plural touch sensors A method and apparatus for discriminating against false touches in a touchscreen system is provided. The system is designed to confirm a touch registered by one touch sensor with another touch sensor, preferably of a different sensor type, prior to acting... | 01/07/2003 |
| 6469267 | Switch with at least one flexible conductive member A switch comprises two substrates coated with conductive elements opposed to each other across a gap. At least one of the conductive elements comprises an intrinsically conductive polymer. The switch completes an electrical circuit when one of substrates ... | 10/22/2002 |
| 6441809 | Acoustic touch position sensor using a low acoustic loss transparent substrate An acoustic touch panel or "touch screen" utilizes acoustic waves within a sensor substrate to determine the position of touch. The substrate is made of a temperable glass having an attenuation coefficient of less than or equal to about 0.6 dB/cm as deter... | 08/27/2002 |
| 6429857 | Apparatus and method to improve resolution of infrared touch systems A touch system using a plurality of infrared ("IR") transmitters and receivers, and a method of determining with increased resolution the location of a touch between the IR transmitters and receivers using on-axis and off-axis detection are disclosed. The... | 08/06/2002 |
| 6366277 | Contaminant processing system for an acoustic touchscreen A method for minimizing the shadowing effects of a contaminant on a surface acoustic wave touchscreen is provided. The disclosed system compares the measured waveform against a baseline waveform for each axis and validates the new touch if the measured wa... | 04/02/2002 |
| 6297811 | Projective capacitive touchscreen An improved touchscreen utilizing two sets of electrodes that are fabricated in a single plane is provided. The individual electrodes of each set of electrodes are formed from a continuous length of a conductive material. Suitable electrode materials incl... | 10/02/2001 |
| 6236391 | Acoustic touch position sensor using a low acoustic loss transparent substrate An acoustic touch panel or "touch screen" utilizes acoustic waves within a sensor substrate to determine the position of touch. The substrate is made of a temperable glass having an attenuation coefficient of less than or equal to about 0.6 dB/cm as deter... | 05/22/2001 |
| 6091406 | Grating transducer for acoustic touchscreens An acoustic touch sensing device, comprising a substrate, having a surface; and an acoustic wave transducer, transducing a bulk wave in said substrate propagating through said substrate along an axis intersecting said surface, wherein energy of said bulk ... | 07/18/2000 |
| 5739479 | Gentle-bevel flat acoustic wave touch sensor An acoustic wave touch sensor comprising an acoustic wave transducer, for transducing an acoustic wave; a substrate, having a front surface. A surface bound acoustic wave interface, having at one least bevel edge, is provided, having an transmitted acoust... | 04/14/1998 |
| 5708461 | Acoustic touch position sensor using a low-loss transparent substrate A touch position sensor or "touchscreen" utilizes acoustic waves within a sensor substrate to determine the position of touch. The substrate is made of a transparent material, such as borosilicate glass or a barium glass, which exhibits substantially less... | 01/13/1998 |
