Item identification tag for rapid inventory data acquisition system
US4862160A · kind A · utility
293Cited by
27References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Mar 20, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q10/087
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computerized transceiver repeatedly sweeps through a set of transmit/receive frequencies to interrogate collectively a plurality of groups of items in a stocking area. Items in each group are tagged with a printed circuit transponder tuned to frequencies uniquely assigned to each group. Data returned is stored and combined mathematically by the computer to arrive at the total number of items in each group. The system is particularly adapted for taking inventory of a large number of retail shelf goods using a mobile transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.