Moving object identification method and apparatus
US6010075A · kind A · utility
14Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Jan 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An IC card (107) sends its identification code in units of one bit in response to a question from a controller (103). The controller sends back to the IC card the received one bit of the identification code. The IC card compares the received and sent bits. If both are equal, the IC card sends the next one bit to the controller and if not, refrains from sending the next one bit. Thus, even when the number of IC cards which are to be identified and the number of IC cards which send their identification codes are simultaneously large, a reduction in the identification efficiency is suppressed to within a small value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.