Acoustic condition sensor employing a plurality of mutually non-

Details Acoustic condition sensor employing a plurality of mutually non- Acoustic condition sensor employing a plurality of mutually non-

1996-08-12

1998-12-29

Shankar, Vijay

Telegraphy

Systems

Position coordinate determination for writing

178 1801, 178 1803, 345177, G08C 2100, G09G 500

Patent

active

058544500

ABSTRACT:
A touch sensor, having an acoustic wave transmissive medium having a surface and a touch sensitive portion of the surface, a transducer system for emitting acoustic energy into the medium, and a receiver system for receiving the acoustic energy from the substrate as at least two distinct sets of waves, a portion of each of which overlap temporally at the receiver system or overlap physically by propagating in the touch sensitive portion along axes which are substantially non-orthogonal, the receiver system determining a position or a waveform perturbing characteristic of a touch on the touch sensitive portion. The receiver may be an amplitude detector or be sensitive to a phase-amplitude characteristic of the received acoustic waves.

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: 5129262 (1992-07-01), White et al.
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: 5334805 (1994-08-01), Knowles et al.
patent: 5380959 (1995-01-01), Knowles
patent: 5451723 (1995-09-01), Huang et al.
patent: 5591945 (1997-01-01), Kent
patent: 5638093 (1997-06-01), Takaheshi
patent: 5717434 (1998-02-01), Toda

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