Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-11-14
1989-04-25
Caldwell, Sr., John W.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340712, 178 18, 310313A, 333153, G09G 116
Patent
active
048252123
ABSTRACT:
A touch control system for a cathode ray tube, or other touch-controlled device capable of recognizing touch positions along a predetermined coordinate axis on a three-dimensionally curved touch surface, includes a substrate comprising a segment of a three-dimensionally curved surface having a touch surface capable of propagating surface acoustic waves. An input surface wave transducer serves to launch a collimated beam of surface acoustic wave energy on the touch surface. If undisturbed, the beam would travel along a path that corresponds to a great circle on the curved surface. An output surface wave transducer develops an electrical output signal upon receipt of surface acoustic wave energy derived from the beam. A reflective array is provided which establishes travel of the beam of energy along a desired path on the touch surface having a contour intermediate a great circle and a parallel. The array has the property of reducing the velocity of surface acoustic wave energy configured and of sufficient density to produce within the array a wave guiding action upon the beam of acoustic wave energy along the desired path effective to confine the beam of energy to the desired path having the intermediate contour.
REFERENCES:
patent: 3134099 (1964-05-01), Woo
patent: 3653031 (1972-03-01), Hlady et al.
patent: 3673327 (1972-06-01), Johnson et al.
patent: 3775560 (1973-11-01), Ebeling et al.
patent: 3808364 (1974-04-01), Veith
patent: 3883831 (1975-05-01), Williamson et al.
patent: 3916099 (1975-10-01), Hlady
patent: 3956745 (1976-05-01), Ellis
patent: 3978437 (1976-08-01), Paige
patent: 4198623 (1980-04-01), Misek et al.
patent: 4254333 (1981-03-01), Bergstrom
patent: 4286289 (1981-08-01), Ottesen et al.
patent: 4346376 (1982-08-01), Mallos
patent: 4403165 (1983-09-01), Ballato et al.
patent: 4642423 (1987-02-01), Adler
Marshall, Paige, Young, "Amplitude Weighting of SAW Reflecting Array-Structures", 1974, IEEE.
Judd and Thoss, "Use of Apodized Metal Gratings in Fabricating Low Cost Quartz RAC Filters", 1980 Ultrasonics Symposium.
Adler Robert
Desmares Peter C. J.
Caldwell Sr. John W.
Fatahiyar Mahmoud
Zenith Electronics Corporation
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