Unit using OS and image forming apparatus using the same
US8453260B2 · kind B2 · utility
14Cited by
9References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Jul 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A chip mountable on a customer replaceable unit monitoring memory (CRUM) unit used in an image forming job includes a central processing unit (CPU) with its own operating system (OS), which operates separately from an OS of the image forming apparatus, to perform authentication communication with a main body of the image forming apparatus using the OS of the CPU. The security of a unit on which the chip is mounted can thereby be reinforced and random changes of data of the unit can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.