Data system with microprocessor featuring multiplexed data transfer and repeat cycle driving arrangement
US4096578A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1976 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Dec 20, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for processing data incorporates a central processing unit and a microprocessor serving as a controller together with associated logic for controlling operation of an attached device such as a serial or line printer. Data is transferred from the microprocessor to the printer by a cable having a number of wires, reduced in number from the number required if printer is directly attached, and involving a multiplexed data transfer operation with storage latches provided in the printer for storing character image information and printer function information. Increased reliability is realized by a repeat cycle operation of the microprocessor wherein significant image or function information is sent to the printer in a succession of repetitive cycles, thus insuring accurate operation of the relatively slow magnets and driving elements in the printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.