Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1997-12-24
2000-07-18
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
178 1804, G09G 500, G06K 1114, G08C 2100
Patent
active
060914068
ABSTRACT:
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 wave is coupled to a wave having a converted wave mode with appreciable energy at said surface and propagating along said surface. The device may include a set of scattering centers to couple the bulk wave to a Rayleigh wave or plate wave. The Rayleigh wave or plate wave may be dispersed over a region of the substrate, and analyzed to detect a perturbation indicative of a position of touch.
REFERENCES:
patent: Re33151 (1990-01-01), Adler
patent: 3673327 (1972-06-01), Johnson et al.
patent: 3893047 (1975-07-01), Lardat
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: 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: 5400788 (1995-03-01), Dias et al.
patent: 5451723 (1995-09-01), Huang et al.
patent: 5591945 (1997-01-01), Kent
patent: 5648643 (1997-07-01), Knowles et al.
patent: 5673041 (1997-09-01), Chatigny et al.
patent: 5708461 (1998-01-01), Kent
patent: 5854450 (1998-12-01), Kent
R.F. Humphreys and E.A. Ash, "Acoustic Bulk-surface-wave-transducer," Electronics Letters, vol. 5, No. 9, May 1, 1969.
Masao Takeuchi & Hiroshi Shimuzu, "Theoretical analysis of grating couplers for surface acoustic waves," Journal of the Acoustic Society of Japan, 36(11): 543-557 (Jun. 24, 1980).
J. Melngailis & R.C. Williamson, "Interaction of Surface Waves and Bulk Waves in Gratings: Phase shifts and sharp Surface Waves/Reflected Bulk Wave Resonances," Proc. 1978 IEEE Ultrasonics Symposium, p. 623.
Herman A. Haus, Annalisa Lattes & John Melngailis "Grating Coupling between Surface Acoustic Waves and Plate Modes", IEEE Transactions on Sonics and Ultrasonics, p. 258 (Sep. 1980).
RF Humphryes & EA ASH "Acoustic Bulk-surface-wave transducer," Electronics Letters (vol. 5 No. 9) May 1, 1969.
M. Takeuchi & K. Yamanouchi "Undirectional excitation of plate waves in a periodic structure," Res. Inst. Elec. Comm. Tohoku University, (Oct. 1991) .
Adler Robert
Kambara Shigeki
Kaneda Hiroshi
Kent Joel
Maxfield Bruce W.
Bowers Benjamin D.
Elo TouchSystems, Inc.
Hjerpe Richard A.
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