Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-10-02
2000-07-04
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
3405722, 3405724, 3405728, 34082554, 34082536, G08B 1314
Patent
active
060845120
ABSTRACT:
Methods and apparata for electronic labeling and localizing an end point and for determining the distance between an interrogator and the end point. In one embodiment, a system is provided that includes an interrogator that transmits an identification code signal that includes a representation of the identification code of the end point to be localized. The interrogator also receives a tag response signal that is transmitted from a tag associated with the end point. The tag transmits the tag response signal upon receiving the identification code signal and confirming that the identification code signal includes a representation of the identification code. The system also includes a localizer, which is hardware, software, or both, that determines the distance between the end point and the interrogator based on the identification code signal and the tag response signal. In one embodiment, the localizer determines the distance based on the time delay between transmitting the identification code signal and receiving the tag response signal. In another alternate embodiment, the localizer determines the distance based on the frequency, or phase, shift between the identification code signal and the tag response signal.
REFERENCES:
patent: 4068232 (1978-01-01), Meyers et al.
patent: 4278977 (1981-07-01), Nossen
patent: 4724427 (1988-02-01), Carroll
patent: 4862160 (1989-08-01), Ekchian et al.
patent: 5528232 (1996-06-01), Verma et al.
patent: 5621417 (1997-04-01), Hassan et al.
patent: 5726630 (1998-03-01), Marsh et al.
patent: 5742237 (1998-04-01), Bledsoe
patent: 5804810 (1998-09-01), Woolley et al.
patent: 5825299 (1998-10-01), Fuentes et al.
patent: 5850187 (1998-12-01), Carrender et al.
patent: 5856788 (1999-01-01), Walter et al.
patent: 5883582 (1999-03-01), Bowers et al.
patent: 5936527 (1999-08-01), Isaacman et al.
patent: 5959568 (1989-08-01), Woolley
Elberty Thomas A.
Hauser Avi I.
Hipsh Yosef
McHugh Brian J.
Sohl William H.
Lucent Technologies - Inc.
Pham Toan
Wu Daniel J.
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