Data transfer system, data transfer method, host apparatus and image forming apparatus
US7882273B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3879
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system capable of efficiently transferring a command set for controlling an image forming apparatus to the image forming apparatus from a host apparatus. A command separate/storage unit separates an image forming command set into a context command set and an object command set, and allocates both command sets in a main memory device. A command read instruction transmission unit transmits a command read instruction having a transfer size and a storage address of each of the allocated context command set and object command set, to the memory access controller. The memory access controller compares the storage address of the context command set included in the received command read instruction with a previous storage address, and reads the context command set from the main memory device only when both storage addresses differ from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.