Method and apparatus for transferring coordinate data between a host computer and display device
US5274794A · kind A · utility
16Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Jan 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method and apparatus for efficiently storing or transmitting related sets of data such as X, Y coordinate data determines the resolution of a display device and the transmission limitations of a communication channel to the display device and encodes a selected portion of the bitmap for display with associated offsets and additional information as a complex number according to a variable-radix polynomial, where the number is segmented into selected bytes for transmission within the operating limitations of the communication channel for decoding and restoration of offsets by the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.