CONTROL METHOD FOR A FUNCTION OF A TOUCHPAD
First Claim
1. A control method for a function of a touchpad, in which the method includes detecting an analog pressure, the method comprising:
- detecting a landing of an object on a region of a touchpad;
calculating a threshold based on measured analog pressure value for the region of the touchpad to determine an event signal responsive thereto;
characterized in that the threshold is an adaptive threshold, and in that the method includes the further steps of;
determining whether the adaptive threshold has been met or exceeded,if the adaptive threshold has been met or exceeded, executing a selected function, andoptionally, terminating the selected function in response to a measured change in the input by the object in a region of the touchpad.
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Abstract
A control method for a function of a touchpad utilizing a capture device includes measuring an analog threshold pressure value, and differentials thereof, and delivering event signals based upon the threshold pressure values and differentials thereof to execute a selected function. The capture device for remote, virtual on screen data input by hand annotation includes at least three functional layers including a bottom rigid layer, a middle pressure sensor layer, a capacitive flexible sensor layer, and a top flexible panel layer. The bottom rigid layer has a surface that provides a mechanical support for writing. The middle pressure sensor layer is adapted to measuring a pressure array or map on the capture active area and to send data representing the measured pressure to a personal computer. The top flexible touch-sensitive passive LCD display layer includes an LCD surface by which whatever is written down on the LCD is impressed graphically due to its liquid crystal physical properties wherein applied pressure changes the crystal particles orientation and light properties, such that when a stylus presses against a writing surface thereof, it leaves a visible trace allowing the user to produce a drawing though no real ink has flown.
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Citations
32 Claims
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1. A control method for a function of a touchpad, in which the method includes detecting an analog pressure, the method comprising:
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detecting a landing of an object on a region of a touchpad; calculating a threshold based on measured analog pressure value for the region of the touchpad to determine an event signal responsive thereto;
characterized in that the threshold is an adaptive threshold, and in that the method includes the further steps of;determining whether the adaptive threshold has been met or exceeded, if the adaptive threshold has been met or exceeded, executing a selected function, and optionally, terminating the selected function in response to a measured change in the input by the object in a region of the touchpad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for a control function of a touchpad, in which the method includes detecting an analog pressure, the method comprising the steps of:
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substantially continuously measuring an analog pressure applied by an object on a region of the touchpad to obtain a plurality of pressure data points; and
,calculating a delta pressure differential value, the method characterized in that the method calculates the delta pressure differential value from the plurality of data points; and
,based upon then delta pressure differential value meeting or exceeding a threshold value within a time period, the method sends an event signal to execute a selected function, whereby the control method adaptively learns from a user'"'"'s inputs and is capable of predicting what actions the particular user desires to engage in. - View Dependent Claims (14)
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15. A control method for a function of a touchpad system, the control method including detecting an analog pressure value, and the control method comprising:
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pre-detecting that a mechanical switch of a touchpad system shall be activated; and
,based upon the pre-detecting, adapting the behavior of the touchpad system to execute a selected function, whereby the control method learns from a user'"'"'s inputs and is capable of predicting what actions the particular user desires to engage in. - View Dependent Claims (16, 17, 18, 19)
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20. A control method for a touchpad, the control method including detecting an analog pressure value, and the control method comprising:
- detecting of the number of one or more objects landing on a surface of a touchpad or the landing position of the one or more objects on the touchpad, wherein the method is characterized in that it includes the further steps of analyzing a substantially continuous data stream of analog pressure measurements of the one or more objects to change between modes of operation, and learning from a user'"'"'s input so as to predict what actions the particular user desires to engage in.
- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
Specification