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Sensor, sensing method thereof, and filter therefor

A detection method and sensor technology, applied in the field of sensors, can solve problems such as prolonged development time

Inactive Publication Date: 2011-08-17
ATLAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, product development time will be extended due to adjustment time

Method used

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  • Sensor, sensing method thereof, and filter therefor
  • Sensor, sensing method thereof, and filter therefor
  • Sensor, sensing method thereof, and filter therefor

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Embodiment Construction

[0050] Hereinafter, a sensor, a detection method of the sensor, and a filter of the sensor according to the present invention will be described in detail with reference to the accompanying drawings.

[0051] figure 1 The configuration of an embodiment of the sensor according to the present invention is shown. The sensor includes a detection data output unit 10 and a touch determination unit 300 , and the detection data output unit 10 includes a detection signal output unit 100 and a delay time calculation unit 200 .

[0052] figure 1 The function of the various blocks shown will be described as follows.

[0053] The detection data output unit 10 outputs detection data Ddata that varies according to whether the contact object is touched or not. The detection signal output unit 100 outputs a reference signal ref and a detection signal sen delayed by a predetermined time from the reference signal ref depending on whether a contact object is touched or not. The delay time calc...

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Abstract

The present invention discloses a sensor, a sensing method thereof, and a filter therefor. The sensor comprises a sensed-data output unit and a determination unit. The sensed-data output unit outputs sensed data that varies depending on whether or not an object touches or approaches the sensor. The determination unit: compares a threshold value with the sensed data to recognize whether or not the object touches or approaches the sensor; varies first and second strength values using the sensed data; varies the threshold value using the first and second strength values; and outputs an output signal that represents whether or not the object touches or approaches the sensor. The first strength value shows a sensed data value when the object does not touch or approach the sensor, and the second strength value shows the sensed data value when the object touches or approaches the sensor.

Description

technical field [0001] The invention relates to a sensor, in particular to a sensor capable of identifying touch or proximity with a certain sensitivity, a detection method of the sensor and a filter of the sensor. Background technique [0002] Sensors that output contact or proximity based on detection of contact or proximity of a contact object (for example, a finger or a pen) are gradually being used in home appliances and portable communication terminals. [0003] Korean Granted Patent No. 666699 discloses a touch sensor that uses the delay time difference between a detection signal obtained by utilizing the electrostatic capacity of the touch object and a reference signal to identify whether the touch object is in contact or not. Korean Laid-Open Patent No. 2008-50544 discloses a delay time calculation circuit that calculates the delay time difference between the detection signal and the reference signal. [0004] The touch sensor may be configured to recognize that it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/96
CPCH03K2217/94094H03K17/96H03K17/962H03K2217/94026G06F3/04182H03K17/955
Inventor 李济赫李柱旼洪在锡文炳埈郑德暎
Owner ATLAB INC