Method for operating touch input device and portable terminal using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsChung Suk JIN, Hae Jun AN
Life of this patent
Estimating the term…
Abstract
A method for operating a touch input device and a portable terminal using the touch input device may prevent a malfunction of the touch input device due to an abrupt change of external temperature. The method for operating a touch input device measures a temperature, calculates a temperature difference value between temperatures measured at a current time point and a previous time point, and compensates a recognition threshold value used for detecting a touch event with a predefined compensation value based on the temperature difference value.
Claims20
A method for operating a touch input device, the method comprising:
- measuring a temperature;
- calculating a temperature difference value between temperatures measured at a current time point and a previous time point;
- and
- compensating a recognition threshold value used for detecting a touch event using a predefined compensation value based on the temperature difference value.
A portable terminal, the terminal comprising:
- a touch input device for inputting a change of a physical characteristic associated with a touch event;
- a temperature sensor for measuring a temperature;
- a touch detector for detecting the touch event;
- a temperature comparator for calculating a temperature difference value between temperatures measured by the temperature sensor at a current time point and a previous time point;
- and
- a compensation algorithm executor for compensating a recognition threshold value used for detecting the touch event using a predefined compensation value based on the temperature difference value.
A portable terminal, the terminal comprising:
- a touch input device for inputting a change of a physical characteristic associated with a touch event;
- a temperature sensor for measuring a temperature;
- a touch detector for detecting the touch event;
- a temperature comparator for calculating a temperature difference value between temperatures measured by the temperature sensor at a current time point and a previous time point;
- and
- a compensation algorithm executor for increasing a recognition threshold value by adding a compensation value to the recognition threshold value, when the temperature difference value is equal to or greater than a rising reference temperature difference value, and for decreasing the recognition threshold value by subtracting the compensation value from the recognition threshold value, when the temperature difference value is equal to or less than a falling reference temperature difference value.
Dependencies are inferred from the claim text.