Telegraphy – Systems – Position coordinate determination for writing
Patent
1996-03-04
1998-04-14
Kuntz, Curtis
Telegraphy
Systems
Position coordinate determination for writing
178 18, 345177, G08C 2100, G09G 302
Patent
active
057394792
ABSTRACT:
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 acoustic wave signal attenuation of less than about 3 dB. The acoustic wave transducer is mounted to transmit the acoustic wave through the interface into the substrate, so that the energy of the acoustic wave appears at the surface. The acoustic wave transducer is mounted on a beveled region of the substrate, inclined to the front surface. The beveled edge has an effective radius which is small as compared to the wavelength and a bevel angle such that the acoustic wave is attenuated by less than about 3 dB on transmission across the edge. In this manner, means are provided to recess transducers for improved product robustness and compactness of design.
REFERENCES:
patent: Re33151 (1990-01-01), Adler
patent: 3673327 (1972-06-01), Johnson et al.
patent: 4642423 (1987-02-01), Adler
patent: 4644100 (1987-02-01), Brenner et al.
patent: 4645870 (1987-02-01), Adler
patent: 4700176 (1987-10-01), Adler
patent: 4746914 (1988-05-01), Adler
patent: 4791416 (1988-12-01), Adler
patent: 5072427 (1991-12-01), Knowles
patent: 5161126 (1992-11-01), Marcus
patent: 5162618 (1992-11-01), Knowles
patent: 5177327 (1993-01-01), Knowles
patent: 5243148 (1993-09-01), Knowles
patent: 5260521 (1993-11-01), Knowles
patent: 5329070 (1994-07-01), Knowles
patent: 5380959 (1995-01-01), Knowles
patent: 5451723 (1995-09-01), Huang et al.
patent: 5573077 (1996-11-01), Knowles
patent: 5591945 (1997-01-01), Kent
Davis-Cannon Marcia M.
De Renzi Robert
Gomes Paulo Irulegui
Kent Joel Christopher
Lewis Michael LeRoy
Elo TouchSystems, Inc.
Kuntz Curtis
Shankar Vijay
LandOfFree
Gentle-bevel flat acoustic wave touch sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gentle-bevel flat acoustic wave touch sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gentle-bevel flat acoustic wave touch sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-637027