Sensor Device as Well as Method for Proximity and Touch Detection
First Claim
1. A sensor arrangement for a hand-held device, comprisingat least one first electrode structure, which comprises at least one transmitting electrode, at least one compensation electrode and at least one reception electrode,at least one second electrode structure, which comprises at least one field transmission electrode and at least one field sensing electrode, andat least one signal transmitter for supplying the at least one transmitting electrode, the at least one compensation electrode and the at least one field transmission electrode with an electric alternating signal,whereinthe at least one transmitting electrode, the at least one compensation electrode and the at least one reception electrode are arranged in such a way in relation to each other, that a first alternating electrical field between the at least one transmitting electrode and the at least one reception electrode can be established and a second alternating electrical field between the at least one compensation electrode and the at least one reception electrode can be established, andthe at least one field transmission electrode and the at least one field sensing electrode are arranged in such a way in relation to each other and to the at least one transmitting and compensation electrodes that a third alternating electrical field between the at least one field transmission electrode and the at least one field sensing electrode can be established and that a gripping of the hand-held device by a hand can cause a coupling of at least one of said first and second alternating fields to said at least one field sensing electrode.
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Accused Products
Abstract
A sensor device has a first electrode structure and a second electrode structure, the first electrode structure has a transmitting electrode, a compensation electrode and a reception electrode and the second electrode structure has a field transmission electrode and at least one field sensing electrode. The first electrode structure is adapted to detect a gripping of an electric hand-held device, whereas the second electrode structure is adapted to detect an approach of a finger to the second electrode structure, for example of the hand gripping the hand-held device.
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Citations
26 Claims
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1. A sensor arrangement for a hand-held device, comprising
at least one first electrode structure, which comprises at least one transmitting electrode, at least one compensation electrode and at least one reception electrode, at least one second electrode structure, which comprises at least one field transmission electrode and at least one field sensing electrode, and at least one signal transmitter for supplying the at least one transmitting electrode, the at least one compensation electrode and the at least one field transmission electrode with an electric alternating signal, wherein the at least one transmitting electrode, the at least one compensation electrode and the at least one reception electrode are arranged in such a way in relation to each other, that a first alternating electrical field between the at least one transmitting electrode and the at least one reception electrode can be established and a second alternating electrical field between the at least one compensation electrode and the at least one reception electrode can be established, and the at least one field transmission electrode and the at least one field sensing electrode are arranged in such a way in relation to each other and to the at least one transmitting and compensation electrodes that a third alternating electrical field between the at least one field transmission electrode and the at least one field sensing electrode can be established and that a gripping of the hand-held device by a hand can cause a coupling of at least one of said first and second alternating fields to said at least one field sensing electrode.
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9. A method for the approach and contact detection of a hand-held device, comprising the following steps:
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supplying at least one transmitting electrode, at least one compensation electrode and at least one field transmission electrode with an electric alternating signal, so that a first alternating electrical field emitted at the at least one transmitting electrode and a second alternating electrical field emitted at the at least one compensation electrode can be coupled into the at least one reception electrode and a third alternating electrical field emitted at the at least one field transmission electrode can be coupled into the at least one field sensing electrode, wherein the at least one transmitting electrode, the at least one compensation electrode and the at least one field sensing electrode are arranged such that a gripping of the hand-held device by a hand can cause a coupling of at least one of said first and second alternating fields said at least one field sensing electrode, and evaluating a first electrical signal tapped at the least one reception electrode and of a second electrical signal tapped at the least one field sensing electrode. - View Dependent Claims (10, 11, 12)
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13. Hand-held device having a sensor arrangement, the sensor arrangement comprising:
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at least one first electrode structure, which comprises at least one transmitting electrode, at least one compensation electrode and at least one reception electrode, at least one second electrode structure, which comprises at least one field transmission electrode and at least one field sensing electrode, and at least one signal transmitter for supplying the at least one transmitting electrode, the at least one compensation electrode and the at least one field transmission electrode with an electric alternating signal, wherein the at least one transmitting electrode, the at least one compensation electrode and the at least one reception electrode are arranged in such a way in relation to each other, that a first alternating electrical field between the at least one transmitting electrode and the at least one reception electrode can be established and a second alternating electrical field between the at least one compensation electrode and the at least one reception electrode can be established, and the at least one field transmission electrode and the at least one field sensing electrode are arranged in such a way in relation to each other and to the at least one transmitting and compensation electrodes that a third alternating electrical field between the at least one field transmission electrode and the at least one field sensing electrode can be established and that a gripping of the hand-held device by a hand can cause a coupling of at least one of said first and second alternating fields to said at least one field sensing electrode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification