Touch device and detection method thereof
AssigneeTPK Touch Solutions (Xiamen) Inc.
InventorFarshid Moussavi
Life of this patent
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Abstract
A touch device includes a plurality of sensors, a storage module and a processing module. The sensors are placed on a substrate for detecting acoustic waves and generating electrical signals. The storage module stores a plurality of templates of delay measurement for a plurality of locations on the substrate. The processing module is coupled to the sensors and to the storage module for calculating a received delay measurement and comparing the received delay measurement to the plurality of templates of delay measurement to estimate touch location. A detection method for the touch device is also provided.
Claims21
A touch device, comprising:
- a plurality of sensors placed on a substrate for detecting acoustic waves and generating electrical signals;
- a storage module for storing a plurality of templates of delay measurement for a plurality of locations on the substrate, wherein each template of delay measurement, corresponding to one location on the substrate, is an average of multiple measurements of the location on the substrate during calibration process;
- and
- a processing module coupled to the plurality of sensors and to the storage module for calculating a received delay measurement and comparing the received delay measurement with the plurality of templates of delay measurement to estimate touch location on the substrate.
A touch device;
- comprising:
- a plurality of sensors placed on a substrate for detecting acoustic waves and converting the acoustic signals to electrical signals;
- a processing module receiving the electrical signals and storing a plurality of templates of delay measurement for a plurality of locations on the substrate, wherein each template of delay measurement corresponding to one location on the substrate is an average of multiple measurements of the location on the substrate, wherein the processing module calculates a touch location by comparing received delay measurement to the plurality of templates of delay measurement, wherein the touch location is calculated by means of calculating the received delay measurement according to the electrical signals.
A detection method of a touch device, comprising:
- detecting acoustic waves;
- converting the acoustic waves to electrical signals;
- calculating a received delay measurement;
- and
- comparing the received delay measurement to a plurality of templates of delay measurement for plurality of locations on a substrate to determine the touch location, wherein the plurality of templates of delay measurement were taken during a calibration process, further wherein each template of delay measurement, corresponding to one location on the substrate, is an average of multiple measurements of the location on the substrate during the calibration process.
Dependencies are inferred from the claim text.