Information processing device, card device and information processing system
US7086087B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Oct 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/082
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
It is a technological object of the present invention to provide an information processing device, a card and a card system that have a high level of security. In order to achieve the object described above, the present invention provides a data processing apparatus comprising at least a first information processing device and a second information processing device connected to the first information processing device by a signal line, the data processing apparatus having a means for changing power consumption on the signal line during transmission of a signal through the signal line in accordance with an actual state of the power consumption that would be observed when the means were not used. Furthermore, the present invention also provides another data processing apparatus comprising at least a first information processing device and a second information processing device connected to the first information processing device by a signal line wherein, between at least either the first information processing device or the second information processing device and the signal line, a signal from the first information processing device or the second information processing device can be …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.