Reading data from a smart card
US6237848A · kind A · utility
155Cited by
14References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/0886
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of reading use-variable data from a smart card (1) includes selected data in the answer-to-reset signal sent from the card in response to a reset signal sent from a card reader (4). In this way a reader can be employed with inexpensive components and limited processing power since full implementation of a communication protocol is not required. An inexpensive key-fob (3) is provided for reading the value balance (7) of an electronic purse card, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.