Control apparatus for operation panel and electronic apparatus
US8031179B2 · kind B2 · utility
1Cited by
0References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Jul 1, 2030 |
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.