Display device
US6538648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device including a clock generation circuit for generating sampling clocks, whose frequency is variable, on the basis of a horizontal synchronizing signal of an input image signal; an analog-to-digital converter for sampling the input image signal on the basis of the sampling clocks generated from the clock generation circuit; calculation device for calculating the number of sampling clocks outputted from a horizontal image start position to a horizontal image end position in image data outputted from the analog-to-digital converter, comparison device for comparing the number of sampling clocks calculated by the calculation means with a previously set value, and a controller for controlling the frequency of the sampling clocks outputted from the clock generation circuit on the basis of the results of the comparison in the comparison means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.