Printer control circuit, printer and print system
US6384930B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1999 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0014
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A printer-control-only hardware circuit (control circuit) is interposed between a printer driver of a host computer and a printer. The printer driver transmits to the control circuit a series of control circuit commands for use with the control circuit. The series of control circuit commands include several types of commands, such as a backend parameter setting command used for sending a backend parameter which is required for resetting the printer and an RGB data transmission command for the purpose of transmitting full-color RGB raster data. The control circuit identifies the types of control circuit command received. If the control circuit command is a backend parameter setting command, the backend parameter is stored in the command buffer within a memory device. If the control circuit command is an RGB data transmission command, full-color RGB raster data of the control circuit command are converted to binary CMYK raster data, and this binary CMYK raster data are stored in data buffer within the memory device. Subsequently, the control circuit reads the backend parameter from the command buffer and prepares a printer initial setting command from the backend parameter. The thus-…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.