Touch screen system having dual touch sensing function
First Claim
1. A touch screen system, comprising:
- an in-cell type optical touch device for displaying images and receiving a light signal;
an out-cell type touch device for sensing a finger or a non-optical stylus, the out-cell type touch device being disposed on an outer surface of the in-cell type optical touch device;
a first functional unit electrically connected with the in-cell type optical touch device, the first functional unit converting an analog sensing signal received by the in-cell type optical touch device into a first electrical signal;
a second functional unit electrically connected with the out-cell type touch panel, an object-sensing signal generated from the out-cell type touch panel being processed by the second functional unit to generate a second electrical signal; and
a third functional unit electrically connected with the first functional unit and the second functional unit to analyze the first electrical signal and the second electrical signal and generate valid output signals, wherein the valid output signals comprise both a light spot location and an object touch location detected by the touch screen system,the third functional unit outputs a valid output signal converted from the first electrical signal by the first functional unit, when only the first functional unit outputs the first electrical signal;
the third functional unit outputs a valid output signal converted from the second electrical signal by the second functional unit, when only the second functional unit outputs the second electrical signal; and
the third functional unit outputs a valid output signal converted only from the first electrical signal, when both the first functional unit outputs the first electrical signal and the second functional unit outputs the second electrical signal.
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Accused Products
Abstract
A touch screen system includes an in-cell type optical touch device for displaying images and receiving a light signal, an out-cell type touch device for sensing a finger or a non-optical stylus, a first functional unit connected with the in-cell type optical touch device, a second functional unit connected with the out-cell type touch panel and a third functional unit connected with the first functional unit and the second functional unit. The out-cell type touch device is disposed on the in-cell type optical touch device. The first functional unit converts an analog sensing signal received by the in-cell type optical touch device into a first electrical signal. An object-sensing signal generated from the out-cell type touch panel is processed by the second functional unit to generate a second electrical signal. The third functional unit analyzes the first electrical signal and the second electrical signal and generates valid output signals.
40 Citations
13 Claims
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1. A touch screen system, comprising:
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an in-cell type optical touch device for displaying images and receiving a light signal; an out-cell type touch device for sensing a finger or a non-optical stylus, the out-cell type touch device being disposed on an outer surface of the in-cell type optical touch device; a first functional unit electrically connected with the in-cell type optical touch device, the first functional unit converting an analog sensing signal received by the in-cell type optical touch device into a first electrical signal; a second functional unit electrically connected with the out-cell type touch panel, an object-sensing signal generated from the out-cell type touch panel being processed by the second functional unit to generate a second electrical signal; and a third functional unit electrically connected with the first functional unit and the second functional unit to analyze the first electrical signal and the second electrical signal and generate valid output signals, wherein the valid output signals comprise both a light spot location and an object touch location detected by the touch screen system, the third functional unit outputs a valid output signal converted from the first electrical signal by the first functional unit, when only the first functional unit outputs the first electrical signal; the third functional unit outputs a valid output signal converted from the second electrical signal by the second functional unit, when only the second functional unit outputs the second electrical signal; and the third functional unit outputs a valid output signal converted only from the first electrical signal, when both the first functional unit outputs the first electrical signal and the second functional unit outputs the second electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touch screen system, comprising:
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a light pen having optical source for providing a light; a monitor for sensing at least one of the light and a stylus impinging on a display area, the monitor providing an output representative of one location of the light or the stylus on the display area; and an operator configured to process a first electrical signal converted from light and a second electrical signal sensed from stylus, wherein the operator generates a set of position coordinates associated with the first electrical signal when the monitor only senses a light, the operator generates a set of position coordinates associated with the second electrical signal when the monitor only senses a stylus, and the operator generates a set of position coordinates only associated with the first electrical signal when the monitor senses both a light and a stylus. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification