MOBILE TELEPHONE ENABLING A USER TO ANSWER A CALL WITHOUT PRESSING A BUTTON
First Claim
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1. A mobile communication device, comprising:
- a device body;
one or more capacitive sensors each having a single electrode;
an oscillator configured to generate an oscillating signal applied to each of the one or more capacitive sensors;
a capacitance-frequency converter circuit configured to convert the frequency of the oscillating signal to the capacitance of each of the one or more capacitive sensors; and
a call-answer circuit coupled to the capacitance-frequency converter circuit, wherein the call-answer circuit is configured to be activated when the capacitance of the capacitive sensor changes by a predetermined amount or reaches a predetermined value when a user'"'"'s hand moves to the proximity of the device body or touches the device body.
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Abstract
A mobile communication device includes a device body, one or more capacitive sensors each having a single electrode that varies depending on a user'"'"'s hand position in the vicinity of the mobile communication device, an oscillator that can generate an oscillating signal applied to each of the capacitive sensors, and a capacitance-frequency converter circuit that can convert the frequency of the oscillating signal to the capacitance of each of the capacitive sensors. The capacitance-frequency converter circuit can activate a plurality of functions in response to different positions of the user'"'"'s hand in the vicinity of the device body.
13 Citations
20 Claims
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1. A mobile communication device, comprising:
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a device body; one or more capacitive sensors each having a single electrode; an oscillator configured to generate an oscillating signal applied to each of the one or more capacitive sensors; a capacitance-frequency converter circuit configured to convert the frequency of the oscillating signal to the capacitance of each of the one or more capacitive sensors; and a call-answer circuit coupled to the capacitance-frequency converter circuit, wherein the call-answer circuit is configured to be activated when the capacitance of the capacitive sensor changes by a predetermined amount or reaches a predetermined value when a user'"'"'s hand moves to the proximity of the device body or touches the device body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile communication device, comprising:
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a device body; one or more capacitive sensors each having a capacitance that varies depending on a user'"'"'s hand position in the vicinity of the mobile communication device; an oscillator configured to generate an oscillating signal applied to each of the one or more capacitive sensors; a capacitance-frequency converter circuit configured to convert the frequency of the oscillating signal to the capacitance of each of the one or more capacitive sensors; a call-answer circuit coupled to the capacitance-frequency converter circuit; and a volume-control circuit coupled to the capacitance-frequency converter circuit, wherein the capacitance-frequency converter circuit is configured to activate the call-answer circuit in response to a first position of the user'"'"'s hand and to activate the volume-control circuit in response to a first position of the user'"'"'s hand. - View Dependent Claims (9, 10, 12, 13, 14, 15, 16)
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17. A mobile communication device, comprising:
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a device body; one or more capacitive sensors each having a single electrode that varies depending on a user'"'"'s hand position in the vicinity of the mobile communication device; an oscillator configured to generate an oscillating signal applied to each of the one or more capacitive sensors; and a capacitance-frequency converter circuit configured to convert the frequency of the oscillating signal to the capacitance of each of the one or more capacitive sensor, wherein the capacitance-frequency converter circuit is configured to activate a plurality of functions in response to different positions of the user'"'"'s hand in the vicinity of the device body. - View Dependent Claims (18, 19, 20)
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Specification