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US 2013/0155015 A1Published application
Method and device for detecting touch screen
AssigneeEgalax_Empia Technology Inc.
InventorCHIN-FU CHANG
Life of this patent
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Abstract
A detection method and device for a touch screen is provided. When a pen touching or approaching the touch screen is detected, only the location of the pen in a predetermined range is provided, and the locations of all other objects within the predetermined range are not provided, such as the location of a palm. Only if the pen and all the objects in the predetermined range are no longer detected, then the locations of objects other than the pen in the predetermined range are provided again.
Claims10
A detection device for a touch screen, comprising:
- the touch screen for detecting signals for approaches or touches of external conductive objects thereon;
- a controller for, when determining at least one external conductive object is a pen based on the signals on the touch screen, recording the location of each pen and areas touched or approached by one or more external conductive objects other than the pen in a predetermined range of the location of each pen;
- and
- a memory for storing a flag corresponding to the location of each pen, each flag corresponding to the predetermined range of the location of the corresponding pen, the flag being set to a true value when the existence of the corresponding pen is detected by the controller, and the flag being set to a false value only if the existence of the corresponding pen is not detected and the existence of any external conductive object other than the pen in the corresponding predetermined range are not detected by the controller,
- wherein the locations of all the external conductive objects in the predetermined range corresponding to a flag being set to the true value are not provided by the controller.
2 more elements
A detection method for a touch screen, comprising:
- providing signals for approaches or touches of external conductive objects on a touch screen;
- when determining at least one external conductive object is a pen based on the signals on the touch screen, recording the location of each pen and areas touched or approached by one or more external conductive objects other than the pen in a predetermined range of the location of each pen;
- providing a flag corresponding to the location of each pen, and each flag corresponding to the predetermined range of the location of the corresponding pen;
- setting the flag to a true value when the location of the corresponding pen is detected;
- setting the flag to a false value only if the location of the corresponding pen is not detected and any external conductive object other than the pen in the corresponding predetermined range are not detected;
- and
- providing the location of each pen and the location of each external conductive object in the predetermined range corresponding to each flag being set to the true value.
4 more elements
Dependencies are inferred from the claim text.