Image input detection apparatus and storing medium
US8149193B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jun 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image input detection apparatus comprises: a voltage applier that applies a voltage of a predetermined waveform to a display medium; a first acquisition unit that acquires a vibration waveform generated in the display medium; a first memory that stores a vibration waveform determined based on the waveform of the voltage applied by the voltage applier; and a second memory that stores information representing that an image written on the display medium has been overwritten, when the difference between the waveform acquired by the first acquisition unit and the waveform stored in the first memory lies within a threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.