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Inputting device with electrostatic sensor

An electrostatic sensor and input device technology, which is applied in the input/output process of data processing, static indicators, instruments, etc., can solve the problems of poor responsiveness and unsuitable for intermittent driving.

Inactive Publication Date: 2004-07-07
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in an input device having such an electrostatic sensor, when a movable body such as a finger touches the electrostatic sensor and starts from a standby state, the time required for starting is about 300 msec, and the responsiveness of the initial operation is poor, and the Problems suitable for discontinuous drives

Method used

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  • Inputting device with electrostatic sensor
  • Inputting device with electrostatic sensor
  • Inputting device with electrostatic sensor

Examples

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Embodiment Construction

[0028] Hereinafter, examples of the present invention will be described.

[0029] figure 1 A portable input device as a first embodiment of the input device having an electrostatic sensor according to the present invention is shown.

[0030] Such as figure 1 As shown, the portable input device outputs a clock signal serving as a driving wave from a clock signal generation unit 2 in a built-in microcomputer 1 as one input signal of an AND circuit 3 of an AND unit. On the input side of the AND circuit 3, a delay unit 6 composed of a resistor 4 and an electrostatic sensor 5 connected in series from the clock signal generating unit 2 side is connected. In this delay unit 6 , a delay signal that gives rise delay to the clock signal is output as another input signal of the AND circuit 3 based on the electrostatic capacitance detected when the human body approaches or touches the electrostatic sensor 4 . On the output side of the AND circuit 3, a resistor 8 and a capacitor 9 are...

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Abstract

An input apparatus having a reduced-size electrostatic sensor that can precisely detect an input and then output a signal and, thus, has excellent responsiveness and reliability comprises the following: clock signal generating means (2) for generating clock signals; delaying means (6) for generating delayed signals by delaying the signal rise time of the clock signal according to the capacitance detected when a human appendage approaches or contacts an electrostatic sensor (5); AND means (3) for receiving the clock signal and the delayed signal as input signals and then outputting these signals as an output signal; and smoothing means (10) for smoothing and outputting the output of the analog switch.

Description

technical field [0001] The present invention relates to an input device having an electrostatic sensor, and more particularly to an input device having an electrostatic sensor that detects electrostatic capacitance generated by approaching or touching a part of a human body such as a hand or a finger, and outputs an electric signal. Background technique [0002] Figure 6 A part of a general electrostatic sensor is shown, (A) is a plan view of the electrostatic sensor, and (B) is a diagram showing an output signal of the electrostatic sensor. [0003] Such as Figure 6 As shown in (A), this electrostatic sensor 50 has an electrode 51 and an electrode 52 for detecting electrostatic capacitance. The surface of above-mentioned electrode 51 and electrode 52 is covered with insulating sheet, but in Figure 6 (A) The above insulating sheet is omitted. [0004] A predetermined voltage is applied to the electrodes 51, 52, and when the movable body H such as a finger or input pen is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32G06F3/033G09G5/00H03K17/94H03K17/96
CPCH03K17/962G06F1/325G06F1/3203G06F1/3231Y02B60/1289G06F3/044Y02D10/00
Inventor 远藤芳久佐藤邦生相马正博
Owner ALPS ALPINE CO LTD
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