Display device with two-level image representation
US6873321B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Jan 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0428
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a display device, under a analog display mode, an analog image signal amplified by an analog amplifier is outputted to a liquid crystal display panel. Under an digital display mode, after being processed by a signal processing circuit, the digital image signal is outputted to the liquid crystal display panel through a DA converter and an amplifier. For writing a “white” image signal, the signal processing circuit converts the input digital signal so that all bits of the signal are a “1.” Also, for writing a “black” image signal, the signal processing circuit converts the input digital signal so that all bits of the signal are a “0.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.