File deletion system in a file unit
US4663736A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1984 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Dec 11, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9017
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Deletion of a particular message in a file unit is accomplished for those messages with deletion set code in a file directory displayed on a screen. Operation of the deletion of a message includes (a) depression of a "deletion" key for indicating a file directory on a screen, (b) designating messages to be deleted by depression of a deletion set/reset key to change a deletion set/reset code to a set code, and (c) execution of deletion by the depression of a "deletion execution" key to delete a message with said deletion set code. A file directory indicated on a screen includes a deletion set/reset code, a message number, nature of a message, length of a message, and first 60 characters of a message, which simplifies identification of a message to be deleted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.