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United States Patent | 6,014,080 |
Layson, Jr. | January 11, 2000 |
Tamper resistant body-worn tracking device to be worn by offenders or potential victims for use in a wireless communication system receiving signals from a global positioning system (GPS). The tracking device directly communicates spacial coordinates to multiple remote sites. The tracking device is an enclosed case worn on a limb of a person. The case contains a battery, a signaling device, and a circuit board containing a field programmable gate array, a wireless data modem, a conventional GPS receiver, and a matched filtering GPS receiver.
Inventors: | Layson, Jr.; Hoyt M. (Palm Harbor, FL) |
Assignee: | Pro Tech Monitoring, Inc. (Palm Harbor, FL) |
Appl. No.: | 181244 |
Filed: | October 28, 1998 |
Current U.S. Class: | 340/573.1; 340/539.1; 340/539.13; 340/539.19; 340/539.31; 340/573.4; 342/357.07; 701/212 |
Intern'l Class: | G08B 023/00 |
Field of Search: | 340/573.1,573.3,573.4,539,825.36,825.46,825.49,357.02,357.07,357.08,357.09 342/357 701/211,212,213 |
4438491 | Mar., 1984 | Constant | 701/106. |
5345244 | Sep., 1994 | Gildea et al. | 342/357. |
5373531 | Dec., 1994 | Kawasaki | 375/1. |
5497149 | Mar., 1996 | Fast | 340/988. |
5504684 | Apr., 1996 | Lau et al. | 340/988. |
5528248 | Jun., 1996 | Steiner et al. | 342/357. |
5535237 | Jul., 1996 | LaPadula, III et al. | 375/200. |
5625668 | Apr., 1997 | Loomis et al. | 455/456. |
5627548 | May., 1997 | Woo et al. | 342/357. |
5652570 | Jul., 1997 | Lepkofker | 340/573. |
5663734 | Sep., 1997 | Krasner | 342/357. |
5712619 | Jan., 1998 | Simkin | 340/539. |
5714931 | Feb., 1998 | Petite et al. | 340/539. |
5731757 | Mar., 1998 | Layson, Jr. | 340/573. |
5731785 | Mar., 1998 | Lemelson et al. | 342/357. |
5742233 | Apr., 1998 | Hoffman et al. | 340/573. |
5742509 | Apr., 1998 | Goldberg et al. | 701/211. |
5773993 | Jun., 1998 | Trimberger | 326/38. |
5825327 | Oct., 1998 | Krasner | 342/357. |
5831574 | Nov., 1998 | Krasner | 342/357. |
5838237 | Nov., 1998 | Revell et al. | 340/573. |
5867103 | Feb., 1999 | Taylor, Jr. | 340/573. |
5884214 | Mar., 1999 | Krasner | 701/207. |
5905461 | May., 1999 | Neher | 342/357. |
U.S. application No. 09/082,313, Layson, Jr., filed May 20, 1998. |
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