Positional information storage and retrieval system and method
US5748148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A positional information storage and retrieval system includes a positional detection unit transmitting positional information of at least one subject moving within an operational environment of the system, a plurality of receiver/transmitter units and a processor unit. Coordinate information of the receiver/transmitter units is received by the positional information unit and used to determine the positional information according to triangulation or other techniques embodied within the positional detection unit. The positional information is transmitted to the receiver/transmitter units which, in turn, transmit the positional information to the processor unit. A method for designing such a system includes selecting operational frequencies of the receiver/transmitter units and positioning the receiver/transmitter units throughout the operational environment such that distortion and attenuation of the positional information are minimized. Algorithms embodied within the processor unit generate, update and control access to a data base of information relating to locations of the subjects within the operational environment over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.