Method and device for dual-differential sensing
First Claim
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1. A dual-differential sensing method for a touch sensitive display, comprising:
- providing said touch sensitive display, including;
a first sensor providing a first value, including a first signal value and a first noise value, wherein said first noise value corresponds to a first distance between said first sensor and said touch sensitive display;
a second sensor providing a second value, including a second signal value and a second noise value, wherein said second noise value corresponds to a second distance between said second sensor and said touch sensitive display; and
a third sensor providing a third value, including a third signal value and a third noise value, wherein said third noise value corresponds to a third distance between said third sensor and said touch sensitive display, wherein said first value, said second value, and said third value are detected in one scan of said first sensor, said second sensor, and said third sensor;
calculating a first difference value between said first value and said second value;
calculating a second difference value between said second value and said third value;
removing noise interference by calculating a dual difference value between said first difference value and said second difference value; and
obtaining a sensing result based on a dual differential sensing information, and determining each location on said touch sensitive display touched or approached by at least one external object according to said sensing result, wherein said dual differential sensing information comprises said dual difference value.
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Abstract
A method and device for dual-differential sensing is disclosed. The sensing information can be generated from signals provided by a sensing device with a plurality of sensors. Each value of the sensing information corresponds to signals of three sensors, respectively. The sensing device is flexible and configured on a display. The noise effect of the display on the signal of each sensor corresponds to the distance between the display and the sensor. Besides, the noise effect of the display on each value of the sensing information corresponds to the distances between the display and the three sensors, respectively.
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Citations
28 Claims
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1. A dual-differential sensing method for a touch sensitive display, comprising:
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providing said touch sensitive display, including; a first sensor providing a first value, including a first signal value and a first noise value, wherein said first noise value corresponds to a first distance between said first sensor and said touch sensitive display; a second sensor providing a second value, including a second signal value and a second noise value, wherein said second noise value corresponds to a second distance between said second sensor and said touch sensitive display; and a third sensor providing a third value, including a third signal value and a third noise value, wherein said third noise value corresponds to a third distance between said third sensor and said touch sensitive display, wherein said first value, said second value, and said third value are detected in one scan of said first sensor, said second sensor, and said third sensor; calculating a first difference value between said first value and said second value; calculating a second difference value between said second value and said third value; removing noise interference by calculating a dual difference value between said first difference value and said second difference value; and obtaining a sensing result based on a dual differential sensing information, and determining each location on said touch sensitive display touched or approached by at least one external object according to said sensing result, wherein said dual differential sensing information comprises said dual difference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19, 20, 21)
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10. A touch sensitive display, comprising:
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a display; a first sensor providing a first value, including a first signal value and a first noise value, wherein said first noise value corresponds to a first distance between said first sensor and said touch sensitive display; a second sensor providing a second value, including a second signal value and a second noise value, wherein said second noise value corresponds to a second distance between said second sensor and said touch sensitive display; and a third sensor providing a third value, including a third signal value and a third noise value, wherein said third noise value corresponds to a third distance between said third sensor and said touch sensitive display, wherein said first value, said second value, and said third value are detected in one scan of said first sensor, said second sensor, and said third sensor; wherein said touch sensitive display defines a first difference value between said first signal value and said second signal value, said touch sensitive this defines a second difference value between said second signal value and said third signal value, and said touch sensitive display defines a dual difference value between said first difference value and said second difference value for removing noise interference; a controller for obtaining a sensing result based on a dual differential sensing information, and determining each location on said touch sensitive display touched or approached by at least one external object according to said sensing result, wherein said dual differential sensing information comprises said dual difference value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 22, 23, 24)
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25. A sensing method for a touch sensitive panel, wherein said touch sensitive panel including a first sensor, a second sensor, and a third sensor configured to provide, respectively, a first value, a second value, and a third value which are detected in one scan of said first sensor, said second sensor, and said third sensor, the sensing method comprising:
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receiving said first value, said second value, and said third value in one scan of said first sensor, said second sensor, and said third sensor; calculating a first difference value between said first value and said second value; calculating a second difference value between said second value and said third value; calculating a dual difference value between said first difference value and said second difference value; and obtaining a sensing result based on a dual differential sensing information, and determining each location on said touch sensitive panel touched or approached by at least one external object according to said sensing result, wherein said dual differential sensing information comprises said dual difference value. - View Dependent Claims (26, 27, 28)
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Specification