Word processor
US4223393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Jul 31, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/183
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Character and control code data are input from a keyboard (12) into a memory (16). A CRT display unit (18) displays one line of data stored in the memory (16). A printer (19) is automatically activated to print the line of data in response to a carriage return or line feed code, a hyphen near the right margin or a space near the right margin with a character in the right margin position. In the latter case, the next line is displayed starting with the character position following the space. The printer (19) prints the line while the next line is being input and displayed. The margins, tab positions and a hot zone near the right margin are displayed above the line of data while a cursor is displayed below the line. Character codes such as backspace codes are displayed with the data and the positions of the data on the display unit (18) always correspond to the printed data positions. A new left margin position is set by depressing a left margin key (12a) on the keyboard (12) followed by numerical keys indicating the new left margin position and a carriage return key. The printer (19) is inhibited during this operation but internally set to the new left margin position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.