Touched state recognition apparatus for matrix type touch panel and a control method thereof
US6023265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1997 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Aug 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04886
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touched state recognition apparatus for a matrix type touch panel and a control method thereof which are capable of correctly recognizing a touched state of a touch switch even when two touch switches are concurrently touched. The touched state recognition apparatus for a matrix type touch panel which includes a touch panel which acts as a switch or a keyboard and has an upper plate and a lower plate each having a plurality of electrodes, a touch processor for applying a checking signal to the touch panel, receiving a detection signal with respect to the touched region, judging the touched region, comparing the number of touch switches contained in the touched region with the area of the touch switch, and judging the touched touch switch, a memory for storing a graphic data therein which corresponds to a coordinate of a region of the touch panel and each touch switch therein, a microprocessor for receiving a signal from the touch processor, which signal corresponds to whether a predetermined touch switch is touched, executing a screen control program corresponding to the touch switch, reading a graphic data from the memory, and outputting the thusly read graphic data, a graphic c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.