Video circuit including a digital-to-analog converter in the monitor which converts the digital data to analog currents before conversion to analog voltages
US4910685A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1983 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Sep 9, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G1/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for processing video data to be displayed comprises a controller and a monitor. The controller includes a memory for storing the digital data to be displayed and apparatus for sequentially reading data from the memory. The data from the controller is conducted in digital form to the separately housed monitor separated from the controller. In the monitor, the digital data is converted into analog form and displayed. In the converting process, the digital data is first converted to an analog current and then the analog current is converted to a voltage. An additional voltage-to-voltage conversion may occur to isolate the capacitance of the display device. This system is particularly suited for high resolution systems (greater than 1000.times.1000 pixels) in which a new pixel is refreshed at least every 10 nanoseconds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.