Method for forming column signals for a liquid crystal display apparatus
US5754157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Jul 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of forming column signals for driving a liquid crystal display apparatus having a plurality of row electrodes and a plurality of column electrodes wherein a plurality of the row electrodes are selected as a batch; the column electrodes are applied with voltages based on orthogonal transformation signals which are obtained by transforming picture signals corresponding to the positions of the simultaneously selected row electrodes on a panel by an orthogonal function, and the row electrodes are applied with the voltages based on the orthogonal transformation signals; the formation of column signals from the picture signals corresponding to the positions of the simultaneously selected row electrodes on the panel includes a serial-parallel transforming step of transforming inputted picture signals into those having a predetermined bit length, a writing/reading step of reading the picture signals having a predetermined bit length after the picture signals have once been written in a memory; and an operating step of transforming by the orthogonal function the picture signals readout from the memory into the orthogonal transformation signals, wherein a random access mode is used …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.