Control apparatus for operation panel and electronic apparatus
US8830173B2 · kind B2 · utility
0Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Dec 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal line used in a key matrix is shared between a signal line used in a first display unit and a signal line used in a second display unit. Two types of periodical pulse signals are superimposed on a level signal which indicates data displayed on the second display unit. One type is a pulse signal for detecting key input and another type is a pulse signal which indicates data displayed on the first display unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.