Object location process and apparatus
US5406275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1992 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Jun 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2219/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods and apparatus for the determination of the location of a mobile vehicle relative to a radio transceiver. The apparatus incorporates a mobile transceiver that calculates its location relative to at least a first stationary transceiver, and communicates this location back to the stationary transceiver. As a mobile vehicle enters the radio field radiated from at least a first stationary transceiver unit, the mobile vehicle transceiver begins measuring the energy of one or more radiated signals as an analog value, converts the analog value to digital form, from which a microprocessor and software algorithm calculates the specific distance from the stationary transceiver, and then returns a data string that informs the stationary transceiver of its location. This system thus allows both the mobile transceiver and the stationary transceiver unit to gain specific information with regard to the relative distance between mobile and base station units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.