Apparatus and method for performing proximity detection according to capacitive sensing output and status output
First Claim
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1. A proximity detecting apparatus for detecting a proximity event, comprising:
- a capacitive sensing device, arranged for generating a capacitive sensing output;
an auxiliary detecting device, arranged for detecting an operational status of an electronic device in which the capacitive sensing device is disposed and accordingly generating a status output; and
a controller, arranged for detecting the proximity event according to the capacitive sensing output and the status output;
wherein the operational status comprises a rotation status of the electronic device, and the controller checks the status output to determine whether the capacitive sensing device operates in a first mode or operates in a second mode;
wherein when the capacitive sensing device operates in the first mode, the controller derives first capacitance variation from the capacitive sensing output of the capacitive sensing device, and determines a coordinate value of a contact position by analyzing the first capacitance variation;
wherein when the same capacitive sensing device operates in the second mode, the controller derives second capacitance variation from the capacitive sensing output of the capacitive sensing device, and detects presence of the proximity event by analyzing the second capacitance variation.
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Abstract
A proximity detecting apparatus for detecting a proximity event includes a capacitive sensing device, an auxiliary detecting device, and a controller. The capacitive sensing device is arranged for generating a capacitive sensing output. The auxiliary detecting device is arranged for detecting an operational status of an electronic device in which the capacitive sensing device is disposed and accordingly generating a status output. The controller is arranged for detecting the proximity event according to the capacitive sensing output and the status output.
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Citations
24 Claims
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1. A proximity detecting apparatus for detecting a proximity event, comprising:
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a capacitive sensing device, arranged for generating a capacitive sensing output; an auxiliary detecting device, arranged for detecting an operational status of an electronic device in which the capacitive sensing device is disposed and accordingly generating a status output; and a controller, arranged for detecting the proximity event according to the capacitive sensing output and the status output; wherein the operational status comprises a rotation status of the electronic device, and the controller checks the status output to determine whether the capacitive sensing device operates in a first mode or operates in a second mode; wherein when the capacitive sensing device operates in the first mode, the controller derives first capacitance variation from the capacitive sensing output of the capacitive sensing device, and determines a coordinate value of a contact position by analyzing the first capacitance variation; wherein when the same capacitive sensing device operates in the second mode, the controller derives second capacitance variation from the capacitive sensing output of the capacitive sensing device, and detects presence of the proximity event by analyzing the second capacitance variation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A proximity detecting method for detecting a proximity event, comprising:
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utilizing a capacitive sensing device for generating a capacitive sensing output; detecting an operational status of an electronic device in which the capacitive sensing device is disposed, and accordingly generating a status output; and detecting the proximity event according to the capacitive sensing output and the status output; wherein the operational status comprises a rotation status of the electronic device, the status output is checked to determine whether the capacitive sensing device operates in a first mode or operates in a second mode; wherein when the capacitive sensing device operates in the first mode, first capacitance variation is derived from the capacitive sensing output of the capacitive sensing device, and a coordinate value of a contact position is determined by analyzing the first capacitance variation; wherein when the same capacitive sensing device operates in the second mode, second capacitance variation is derived from the capacitive sensing output of the capacitive sensing device, and presence of the proximity event is detected by analyzing the second capacitance variation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A proximity detecting apparatus for detecting a proximity event, comprising:
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a capacitive sensing device, arranged for generating a capacitive sensing output; an auxiliary detecting device, arranged for detecting an operational status of an electronic device in which the capacitive sensing device is disposed and accordingly generating a status output; and a controller, arranged for controlling a sensitivity setting of the capacitive sensing device according to the status output, and detecting the proximity event according to at least the capacitive sensing output; wherein the operational status comprises a rotation status of the electronic device; and the sensitivity setting of the capacitive sensing device comprises a number of times sampling and accumulation is performed upon the capacitive sensing output in one unit time. - View Dependent Claims (22, 23, 24)
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Specification