Image display apparatus and method of determining characteristic of conversion circuitry of an image display apparatus
US7227541B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0414
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display apparatus has an image display including scanning lines, modulation lines and display devices driven through the scanning lines and modulation lines, a scanning circuit for supplying a scanning signal to the scanning line, a modulating circuit for supplying a modulation signal to the modulation line, and a converting circuit for converting the number of scanning lines of an input image signal. In addition, a selecting section selects a scan method of any of a first scan method and a second scan method and a changing section changes a vertical scaling filter characteristic of the converting circuit in accordance with the selected scan method. The vertical scaling filter characteristic in the case of the first scan method is a characteristic having a weaker elimination effect on high frequency components as compared with the vertical scaling filter characteristic in the case of the second scan method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.