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Sensor device as well as method for proximity and touch detection

A sensor device and evaluation device technology, applied in electrical components, electronic switches, pulse technology, etc., can solve problems such as the inoperability of electric hand-held devices, affecting the capacitive environment, etc., and achieve the effect of reducing construction work.

Inactive Publication Date: 2013-06-05
MICROCHIP TECH GERMANY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantage here is that the detection of finger movement or finger release switch events strongly depends on the hand holding the handheld device.
In the case of an unfavorable position of the hand on the electric hand-held device, the hand can affect the capacitive environment of the capacitive proximity sensor, so that the approach of a finger at the capacitive proximity sensor can no longer be reliably detected by it
This can cause the electric hand-held device to no longer operate

Method used

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  • Sensor device as well as method for proximity and touch detection
  • Sensor device as well as method for proximity and touch detection
  • Sensor device as well as method for proximity and touch detection

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Embodiment Construction

[0048] figure 1 An electric handheld device, such as a mobile phone, is shown, on which a first electrode structure and a second electrode structure are arranged. The first electrode structure includes a transmitting electrode TxM, a compensation electrode TxC and a receiving electrode RxM. The second electrode structure comprises two electrode pairs Rx1, Tx1 or Rx2, Tx2.

[0049] The first electrode structure is provided for detecting a hand holding an electric handheld device. The second electrode structure or two electrode pairs Rx1 , Tx1 and Rx2 , Tx2 are provided for detecting a finger approaching the corresponding electrode pair. The electrodes Tx1, Tx2 (field emission electrodes) operate as emitting electrodes where an alternating electric field can be emitted. The electrodes Rx1 and Rx2 (field sensing electrodes) operate as receive electrodes into which the alternating electric field radiated by the respective field emission electrodes Tx1, Tx2 can be coupled once t...

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Abstract

The invention provides a sensor device with a first electrode structure and a second electrode structure, the first electrode structure comprising a transmitting electrode, a compensation electrode and a reception electrode and the second electrode structure comprising 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.

Description

technical field [0001] The invention relates to a sensor device which can be arranged on an electric hand-held device and which is adapted to detect whether a hand is holding the electric hand-held device and whether a hand is close to the electric hand-held device. Furthermore, the invention relates to a method for proximity and touch detection with a sensor device according to the invention. Furthermore, the invention relates to a hand-held device with a sensor device according to the invention. The handheld device may be, for example, a mobile phone, computer mouse, remote control, input device for a game controller, mobile computer, or the like. Background technique [0002] There is always a need on electrical devices, such as electric hand-held devices, for ways to operate the electrical devices. In the case of an electric handheld device, such as a mobile phone, it is usually manipulated with one or several fingers. [0003] It is known to provide sensing means for...

Claims

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Application Information

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IPC IPC(8): H03K17/955H03K17/96
CPCH03K17/955G01N27/22H03K17/962H03K17/96
Inventor 霍尔格·埃尔肯斯克劳斯·卡尔特纳
Owner MICROCHIP TECH GERMANY GMBH
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