Data stream independent printer
US5025398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | May 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The above described problems are solved and a technical advance achieved in the field by the data stream independent printer of the present invention. This printer is a nonimpact printer that is compatible with host processors that are programmed to operate line printers and host processors that are programmed to operate nonimpact printers. This compatibility is achieved by the use of conversion apparatus that emulates the operation of a line printer, such as a high speed band printer, when the associated host processor is programmed to operate high speed line printers. The conversion apparatus responds to the line printer control signals produced by the host processor to control the operation of the nonimpact printer. This conversion apparatus stores a plurality of character set definitions, overlays, copy modifications and setups on a disk drive memory located in the printer system so that the band definition information provided by the host can be translated into print character generation control signals. In operation, the host processor transmits a band identification data to the printer system, which data is used to retrieve from the disk memory to form and format of the char…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.