Touched Position Detection Method for Touch Panel
AssigneeHitachi Displays, Ltd.
InventorsKoji DOI, Norio MAMBA, Koji NAGATA, Toshiyuki KUMAGAI, Koji HAYAKAWA, Toshiaki ATSUTA
Life of this patent
Estimating the term…
Abstract
In a touched position detection method for a touch panel for detecting a touched position, based on measured values by a plurality of sensors, presence of a touch is determined when a measured value by a sensor exceeds a touch threshold. As a touch threshold, a value which cannot be attained due to a mere noise but can due to presence of a touch is set. With respect to sensors located in the vicinity of a sensor showing a high measured value, a higher weighted value is applied to modify a measured value in a touched position calculation process than that to be applied to other sensors.
Claims9
A touched position detection method for a touch panel for detecting a touched position, based on measured values by a plurality of sensors, comprising:
- a step of selecting sensors located in a vicinity of a sensor showing a high measured value;
- and
- a step of applying different noise reduction parameters to measured values by the sensors selected and measured values by other sensors.
A touched position detection method for a touch panel for detecting a touched position, based on a current measured value by a sensor and a reference value which is a measured value by a sensor with absence of a touch, wherein content of an update process for updating the reference value is controlled depending on presence or absence of a touch.
A touched position detection method for a touch panel for detecting a touched position, based on current measured values by sensors and reference values which are measured values by sensors with absence of a touch, comprising:
- a step of selecting sensors located in a vicinity of a sensor showing a high measured value,
- wherein
- content of an update process for updating the reference values is controlled depending on whether or not sensors of concern are included in the sensors selected.
Dependencies are inferred from the claim text.