Programmable printer controller with multiline buffering and overstrike feature
US4381553A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1981 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Jan 22, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This controller may be used to direct operations of a remote station impact line printer whose data source is a host computer. The controller includes a microprocessor (CPU), a memory large enough to accomodate a plurality of lines of textual data, and host computer and printer interfaces arranged in a firmware implementation. A multiline buffering feature includes capability for receipt of incomplete lines and printing of partial lines. An overstrike feature includes capability for printing more than one character at the same print point (e.g., underlining, or "0") without intervening horizontal escapement commands such as backspace or carriage return.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.