Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1999-04-07
2000-11-21
Shankar, Vijay
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
345176, 178 1801, 178 1804, 178 1901, 178 1902, G09G 500, G08C 2100
Patent
active
061510149
ABSTRACT:
A method and corresponding system for tracking variations in distance D calculated from time-of-flight measurements of a sequence of pulses of a pressure wave oscillation from a transmitter to a receiver identifies a state of synchronous operation by obtaining at least two time-of-flight measurements derived from successive pressure wave pulses which satisfy given synchronicity criteria. Successive time-of-flight measurements are then monitored to identify a shifted time-of-flight measurement which varies by at least half of the wave period from a predicted time-of-flight value calculated from a number of preceding time-of-flight measurements. A shift factor is then identified corresponding to an integer multiple of the wave period by which the shifted time-of-flight measurement must be corrected to obtain a corrected time-of-flight measurement falling within half of the wave period from the predicted time-of-flight value. The distance D calculated from the shifted time-of-flight measurement is then corrected by the product of the shift factor and the pressure wave wavelength.
REFERENCES:
patent: Re33936 (1992-05-01), Miyamori et al.
patent: 3134099 (1964-05-01), Woo
patent: 3382480 (1968-05-01), Tsao et al.
patent: 3396366 (1968-08-01), Midlock et al.
patent: 3613066 (1971-10-01), Cacreman
patent: 3706850 (1972-12-01), Fisher et al.
patent: 3838212 (1974-09-01), Whetstone et al.
patent: 3914754 (1975-10-01), Kirk
patent: 4103278 (1978-07-01), Satake et al.
patent: 4246439 (1981-01-01), Romein
patent: 4307456 (1981-12-01), Ise et al.
patent: 4309098 (1982-01-01), Shenk
patent: 4336987 (1982-06-01), Shenk
patent: 4439846 (1984-03-01), Rodriguez
patent: 4440482 (1984-04-01), Shenk
patent: 4488000 (1984-12-01), Glenn
patent: 4490814 (1984-12-01), Shenk
patent: 4506354 (1985-03-01), Hansen
patent: 4552991 (1985-11-01), Hulls
patent: 4564928 (1986-01-01), Glenn et al.
patent: 4570033 (1986-02-01), Hulls
patent: 4578674 (1986-03-01), Baker et al.
patent: 4665282 (1987-05-01), Sato et al.
patent: 4670751 (1987-06-01), Enokido et al.
patent: 4677595 (1987-06-01), Obayashi et al.
patent: 4682159 (1987-07-01), Davison
patent: 4695833 (1987-09-01), Ogura et al.
patent: 4711977 (1987-12-01), Miyamori et al.
patent: 4739860 (1988-04-01), Kobayashi et al.
patent: 4750584 (1988-06-01), Tanaka et al.
patent: 4758691 (1988-07-01), De Bruyne
patent: 4772764 (1988-09-01), Dorr
patent: 4777329 (1988-10-01), Mallicoat
patent: 4853715 (1989-08-01), Paschkis
patent: 4963703 (1990-10-01), Phillips et al.
patent: 5023408 (1991-06-01), Murakami et al.
patent: 5248856 (1993-09-01), Mallicoat
patent: 5380959 (1995-01-01), Knowles
patent: 5434370 (1995-07-01), Wilson et al.
patent: 5448263 (1995-09-01), Martia
patent: 5637839 (1997-06-01), Yamaguchi et al.
patent: 5717434 (1998-02-01), Toda
patent: 5750941 (1998-05-01), Ishikawa et al.
"Radar On A Chip," Popular Science, Mar. 1996.
"Micropower Impulse Radar (MIR) Technology Overview," htt;://lasers.IInl.gov/lasers/idp/mir/files/MIR.sub.-- info.ht (1996).
advertisement by Wacom, 1996.
advertisement by Calcomp, 1996.
Serber Ron
Shenholtz Gideon
Zloter Zahi
Friedman Mark M.
Pagasus Technologies Ltd.
Shankar Vijay
LandOfFree
Systems and processing algorithms for ultrasound time-of-flight does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Systems and processing algorithms for ultrasound time-of-flight , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and processing algorithms for ultrasound time-of-flight will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1262271