Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1985-06-03
1991-10-22
Oberley, Alvin E.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340711, G09G 508
Patent
active
050599593
ABSTRACT:
A cursor-aiming system for use with a screen having a movable cursor is provided with means for generating a field and means for changing the position of the cursor on the screen in response to the movement of an operator's finger in the field. In one embodiment there is provided a plurality of monostatic sonars and in another embodiment there is provided a plurality of bistatic sonars. The sonars are mounted for the transmission and reception of acoustic signals through apertures located in a spaced relationship along the upper margin of a terminal keyboard. In typical embodiments the signal frequency is approximately 200 KHz. Either pulsed or continuous-wave signals may be employed. When pulses are used, a typical pulse rate is 200 pps with a pulse width of 25 microseconds. Multiple frequency systems comprise alternate pulses of 200 and 250 KHz. Interpulse intervals are dithered to discriminate against around-the-timebase echoes.
REFERENCES:
patent: 3668685 (1972-06-01), Horvath
patent: 3883861 (1975-05-01), Heartz
patent: 4028619 (1977-06-01), Edwards
patent: 4124838 (1978-12-01), Kiss
patent: 4253166 (1981-02-01), Johnson
patent: 4293222 (1981-10-01), Caruso et al.
patent: 4311991 (1982-01-01), Rimbey
patent: 4313113 (1982-01-01), Thornburg
patent: 4319189 (1982-03-01), Cullam, Jr. et al.
patent: 4367465 (1983-01-01), Mati et al.
patent: 4369439 (1983-01-01), Broos
patent: 4376469 (1983-03-01), Longrod
patent: 4378552 (1983-03-01), Jalbert
patent: 4384633 (1983-05-01), Hoyer-Elletsen
patent: 4506354 (1985-03-01), Hansen
patent: 4517559 (1985-05-01), Deitch et al.
patent: 4524348 (1985-06-01), Lefkowitz
patent: 4560270 (1985-12-01), Wiklund et al.
patent: 4565999 (1986-01-01), King et al.
patent: 4578674 (1986-03-01), Baker et al.
IBM Technical Disclosure Bulletin, vol. 27, No. 11, "Ultrasonic Cursor Position Detector" Apr. 1985.
Huffman, "Exact Position Detection with Finger Point and Feedback", IBM Technical Disclosure Bulletin, vol. 123, No. 6, Nov. 1980.
Fajans, "Acoustical Touch Panel", IBM Technical Disclosure Bulletin, vol. 20, No. 7, Dec. 1977.
"Thumbwheel Positional Control Unit", Leon; IBM Technical Disclosure Bulletin, vol. 21, No. 7; Dec. 1978.
Lisk, "Electronic Keyboard", IBM Technical Disclosure Bulletin, vol. 20, No. 1, Jun. 1977.
Calcagano et al., "Magnetoacoustic Keyboard", IBM Technical Disclosure Bulletin, vol. 21, No. 9, Feb 1979.
Oberley Alvin E.
Seven Oaks Corporation
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