Detecting method and detecting device of abnormality of differential signal receiving terminal of liquid crystal displaying module
US8907695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | May 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A detecting method of abnormality of a differential signal receiving terminal of a liquid crystal displaying module, including: inputting high level signals to LVDS0+, LVDS0−, LVDS1+, LVDS− in order, in which only one high level signal is inputted to one of the differential signal lines and the other differential signal lines are kept in high impedance states simultaneously; and receiving feedback signals from all the differential signal lines and determining whether the differential signal lines of detecting units are abnormal or not according to the received feedback signals. The abnormality of the differential signal lines includes terminal resistive opens of the differential signal lines, a short circuit between two adjacent groups of differential signal lines, and short circuits of the differential signal lines to ground or to a power supply caused by abnormal power supplying sequence. By inputting high level signals to the differential signal lines in order and receiving the feedback signal from each differential signal line, the abnormality of the receiving terminal can be detected quickly according to the received feedback signals. This not only reduces the labor cost and t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.