Electronic keyboard system and method for reproducing selected symbolic language characters
US4679951A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1980 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Sep 26, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J3/01
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for electronic typing of symbolic language texts is disclosed. A twelve-key keyboard utilizing a modified four-corner identifier system permits construction of a first shape identifier code utilizing indicia which represent the shape of a character to be reproduced. Alternatively, a phonetic identifier code utilizing a phonetic alphabet can be constructed to represent the character. The identifier code is used to select one or more characters stored in a data processing system memory, each character selected by the shape identifier code having the same four-corner identifier indicia, and each character selected by the phonetic identifier code having the same phonetic spelling. Only a limited number of characters can be uniquely identified by either the four-corner system or the phonetic spelling system; for the remainder of the characters, a single set of indicia or a single phonetically spelled word can represent two or more characters, and thus ambiguities exist in the selection process. If the word to by typed comprises a single character, means are provided for manually disambiguating the characters selected by the indicia code. If the word consists of tw…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.