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Class Information
Number: 345/176
Name: Computer graphics processing, operator interface processing, and selective visual display systems > Display peripheral interface input device > Touch panel > Transparent substrate having light entrapment capability (i.e., waveguides)
Description: Subject matter wherein the touch panel includes a transparent material mounted on the display device* for entrapping the light within the substrate.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
6538644 Touch panel Mar. 25, 2003
6480187 Optical scanning-type touch panel Nov. 12, 2002
6441809 Acoustic touch position sensor using a low acoustic loss transparent substrate Aug. 27, 2002
6433702 Flexible touch-sensitive matrix cathode ray tube Aug. 13, 2002
6424332 Image comparison apparatus and method Jul. 23, 2002
6415240 Coordinates input apparatus and sensor attaching structure and method Jul. 2, 2002
6414674 Data processing system and method including an I/O touch pad having dynamically alterable location indicators Jul. 2, 2002
6403904 Contact switch for an electrical appliance Jun. 11, 2002
6396484 Adaptive frequency touchscreen controller using intermediate-frequency signal processing May. 28, 2002
6373475 Converter for resistive touchscreens Apr. 16, 2002
6369806 Coordinate-detecting device and coordinate input pad for use in coordinate-detecting device Apr. 9, 2002
6366278 Camera system Apr. 2, 2002
6351260 User input device for a computer system Feb. 26, 2002
6297864 Liquid crystal display Oct. 2, 2001
6239789 Position detecting method and apparatus for detecting a plurality of position indicators May. 29, 2001
6172667 Optically-based touch screen input device Jan. 9, 2001
6166370 Method and apparatus for generating a control signal Dec. 26, 2000
6151014 Systems and processing algorithms for ultrasound time-of-flight digitizer systems Nov. 21, 2000
5952998 Transparent touchpad with flat panel display for personal computers Sep. 14, 1999
5936207 Vibration-transmitting tablet and coordinate-input apparatus using said tablet Aug. 10, 1999
5914709 User input device for a computer system Jun. 22, 1999
5898136 Position detecting apparatus having a tablet and a position pointing device Apr. 27, 1999
5804773 Simplified touch screen with improved position accuracy Sep. 8, 1998
5750940 Coordinate input tablet with notched film substrate May. 12, 1998
5736686 Illumination apparatus for a digitizer tablet with improved light panel Apr. 7, 1998
5717168 Method and device for capturing and processing graphical information Feb. 10, 1998
5682019 Position detecting apparatus and position pointing device including elapsed time period build up detector Oct. 28, 1997
5675130 Position sensing method for use in coordinate input apparatus Oct. 7, 1997
5672852 Position pointing device including a memory and a position detecting device coupled by AC fields to the pointing device Sep. 30, 1997
5661269 Position pointing device having resonant circuit with sequentially changed characteristics and combination thereof with position detecting device Aug. 26, 1997
5657056 Display device Aug. 12, 1997
5644108 Position detection device utilizing electromagnetic induction Jul. 1, 1997
5578817 Pointing device utilizing a photodetector array and controlled by a human finger contacting a prism Nov. 26, 1996
5574262 Noise cancellation for non-ideal electrostatic shielding Nov. 12, 1996
5491314 Flat high temperature membrane switch display window Feb. 13, 1996
5359155 Illumination apparatus for a digitizer tablet Oct. 25, 1994
4963859 Method and apparatus for capturing information in drawing or writing Oct. 16, 1990
4878107 Touch sensitive indicating light Oct. 31, 1989
4868551 Sensitive display device comprising a scanned screen Sep. 19, 1989
4827085 Voice and image teleconferencing system including paperless facsimile means May. 2, 1989
4786765 Coordinates input system Nov. 22, 1988
4697244 Coordinate input device with display and printer Sep. 29, 1987
4684801 Signal preconditioning for touch entry device Aug. 4, 1987
4679135 Control apparatus Jul. 7, 1987
4673918 Light guide having focusing element and internal reflector on same face Jun. 16, 1987
4665282 Tablet type coordinate input apparatus using elastic wave May. 12, 1987
4542375 Deformable touch sensitive surface Sep. 17, 1985
4484179 Touch position sensitive surface Nov. 20, 1984
4346376 Touch position sensitive surface Aug. 24, 1982
4305071 Touch sensitive screen signal detection arrangement Dec. 8, 1981

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