System for digital transmission and text display
US4290062A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Feb 28, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/225
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for transmission and display of texts on a television screen enables a display of a magazine made up of several pages. The packets of data relative to one page are transmitted without being multiplexed with the packets from another page of the same magazine. The data of one page begins with a page flag which is followed by data indicating the number of the page and ends with the flag of the following page. The data from each page is grouped in rows, preceded by a row flag. Each page contains an order row of the data which is operation data and is not used for display. Certain pages contain only the data which is relative to the shape of characters of the alphabet and the pages are not for display. They include in their order rows a specific operation octet which is recognized in the receiver. Responsive to this page, the system switches the subsequent data from the alphabet page towards the writing circuit of one of many shape memories, in order to record there the character shape data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.