Analog to digital converter
US8742967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2013 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An analog to digital converter generating a number of corresponding voltages in response to a number of values of a grey level is provided. The analog to digital converter includes a decoder and an operational amplifier. The decoder provides first to third output voltages having the same level when w most significant bits (MSBs) of the grey level correspond to the same value, provides first and second intermediate voltages in response to the x MSBs next to the w MSBs when the w MSBs correspond to different values, and selectively has the first to the third output voltages equal to one of the first and the second intermediate voltages. The operational amplifier obtains a pixel voltage by interpolating the first to the third output voltages, wherein the sum of w and x is smaller than or equal to the bit number of the gray level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.