Mutualistic engine controller
US8422058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Apr 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1823
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A printing device has a printing engine that is at least partially made up of a customer replaceable unit or units. An engine controller is operatively connected to the printing engine. The engine controller uses software to control the operations of the printing engine. A non-volatile memory is operatively connected to the engine controller. The non-volatile memory stores values used by the engine controller to control operations of the printing engine. An adapter card is operatively connected to the non-volatile memory and to the customer replaceable units. The customer replaceable unit has a memory unit and the adapter card reads data from the memory unit. The adapter card uses the data to directly alter values within the non-volatile memory by bypassing the engine controller when communicating with the non-volatile memory. Further, the adapter card alters the non-volatile memory without altering the software used by the engine controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.