Character and graphics data display apparatus having data compression capability
US4992782A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1988 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jul 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G1/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A character and graphics display device for displaying character and graphics data which includes a receiving circuit for deriving the character and graphics data from a signal carrying that data encoded therein, a memory for storing the received data, a decoder circuit for decoding the encoded data into suitable form for transfer to a display device, and a display memory for temporarily storing this decoded data, further includes compression circuits for converting the decoded data into a form whereby patterns represented by that data are displayed in compressed size. Pattern and graphics data can thereby be displayed together with other data such as a television picture, or a number of pages of the character and graphics data can be displayed simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.