Method for improving positioned accuracy for a determined touch input
Assignee3M Innovative Properties Company
InventorJerry B. Roberts
Life of this patent
Estimating the term…
Abstract
An approach for accurately determining touch location on a touch screen is provided. According to one aspect, a touch signal shape may be correlated with a level of touch-induced touch signal error present in the touch signal. The touch signal shape is associated with a preferred time for obtaining touch signal information to determine the touch location. Touch signal location information is acquired in response to detecting the touch signal shape in the touch signal. The location of the touch is determined from the acquired touch signal information.
Claims81
A method for determining a touch location on a touch screen, comprising:
- acquiring a touch signal corresponding to a touch on the touch screen;
- using a fixed threshold to determine that the touch signal represents a valid touch input;
- detecting the first occurrence of a predetermined shape in the touch signal;
- and
- determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A method for determining a touch location on a touch screen, comprising:
- associating a touch signal shape with a level of touch signal error;
- acquiring a touch signal corresponding to a touch on the touch screen;
- detecting the first occurrence of the touch signal shape in the touch signal;
- and
- determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A method for determining a touch location on a touch screen, comprising:
- associating a touch signal shape with a local minimum in touch-induced error;
- acquiring a touch signal arising from a touch;
- determining a particular time at which the touch signal shape is present in the touch signal;
- and
- determining touch location using touch signal information obtained at the particular time.
A method for determining a touch location on a touch screen, comprising:
- acquiring a touch signal arising from a touch force on a touch screen;
- detecting a touch signal shape within an interval of the touch signal associated with maximum touch force;
- and
- determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A method for determining touch location on a touch screen, comprising:
- acquiring a touch signal representative of a touch on the touch screen, the touch signal having an error related to the rate of change of the touch signal;
- detecting a particular time for obtaining touch signal information for determining touch location based on the rate of change of the touch signal;
- and
- determining the touch location using touch signal information obtained at the particular time.
A touch screen system, comprising:
- a touch surface;
- a plurality of touch sensors, each of the touch sensors physically coupled to the touch surface and producing a sensor signal in response to a touch applied to the touch surface;
- and
- a control system, coupled to the touch sensors and receiving the sensor signals, the control system acquiring a touch signal corresponding to a touch on the touch screen, detecting a first occurrence of a touch signal shape in the touch signal, and determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A touch screen display system, comprising:
- a touch screen system, including:
- a touch surface;
- a plurality of touch sensors, each of the touch sensors physically coupled to the touch surface and producing a sensor signal in response to a touch applied to the touch surface;
- a control system, coupled to the touch sensors and receiving the sensor signals, the control system acquiring a touch signal corresponding to a touch on the touch screen, detecting a first occurrence of a touch signal shape in the touch signal, and determining touch location using touch signal information obtained in response to detecting the touch signal shape;
- and
- a display for displaying information through the touch screen system.
A display system, comprising:
- a touch screen system, including
- a touch surface;
- a plurality of touch sensors, each of the touch sensors physically coupled to the touch surface and producing a sensor signal in response to a touch applied to the touch surface;
- and
- a control system, coupled to the touch sensors and receiving the sensor signals, the control system acquiring a touch signal corresponding to a touch on the touch screen, detecting a first occurrence of a touch signal shape in the touch signal, and determining touch location using touch signal information obtained in response to detecting the touch signal shape;
- a display for displaying information;
- and
- a processor coupled to the display and the touch screen system for processing data to be displayed on the display and information received from the touch screen system.
A system for determining the location of a touch on a touch screen, comprising:
- means for acquiring a touch signal corresponding to a touch on the touch screen;
- means for detecting a first occurrence of a touch signal shape in the touch signal;
- and
- means for determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A system for determining the location of a touch on a touch screen, comprising:
- means for associating a touch signal shape with a level of touch signal error;
- means for acquiring a touch signal corresponding to a touch on the touch screen;
- means for detecting a first occurrence of the touch signal shape in the touch signal;
- and
- means for determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A system for determining a touch location on a touch screen, comprising:
- means for acquiring a touch signal arising from a touch force on a touch screen;
- means for detecting a touch signal shape within an interval of the touch signal associated with maximum touch force;
- and
- means for determining touch location using touch signal information obtained in response to detecting the touch signal shape.
A computer-readable medium configured with executable instructions for causing one or more computers to perform a method of determining the location of a touch on a touch screen, the method comprising:
- acquiring a touch signal corresponding to a touch on the touch screen;
- detecting a first occurrence of a touch signal shape in the touch signal;
- and
- determining touch location using touch signal information obtained in response to detecting the touch signal shape.
Dependencies are inferred from the claim text.