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Position-detecting device

A detection device and detector technology, which are applied in the counting, instrumentation, electrical digital data processing and other directions of items shipped through a conveying device, and can solve problems such as expensive

Inactive Publication Date: 2005-02-09
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, this technique using two cameras is also very expensive

Method used

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Experimental program
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Embodiment Construction

[0036] Embodiments of the present invention will be described below with reference to the accompanying drawings. 1A and 1B are schematic diagrams respectively showing the construction of a first embodiment of a position detecting device according to the present invention. Accompanying drawing 1A is its plan view, and accompanying drawing 1B is a cross-sectional view taken along the line A-A of accompanying drawing 1A. It should be noted that the cross-hatching used to express the cross-sectional view is not for the purpose of preventing the drawing from becoming too complicated.

[0037] The first embodiment of the position detection device 1A according to the present invention is used to acquire the two-dimensional position of a detection object, and is used, for example, as a touch panel device. In the position detection device 1A, a flat detection area 3 is provided on the front surface of the screen of a liquid crystal display 2, which is only an example of a display. In...

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Abstract

This invention installs a liquid crystal display with a detection range on its screen. Along right and left sides of this detection range, two mirrors are arranged as opposed to each other, and along one of sides perpendicular to the sides along which the mirrors are arranged a camera unit is arranged. The camera unit comprises a linear light sensorand a pinhole. When an arbitrary position in the detection range is pointed by a fescue, the linear light sensor detects a real image of a detection target. The linear light sensor also detects a mapped image of the detection target reflected by the mirror. Then, positional information of the real image and the mapped image of the detection target on the linear light sensor is used to obtain a two-dimensional position of the fescue in the detection range.

Description

technical field [0001] The present invention relates to a position detection device for detecting the position of a detection object. More particularly, it relates to a position detection device such as a touch screen. Background technique [0002] In the prior art, a position detection device such as a touch screen for obtaining the two-dimensional coordinates of the position touched by a finger, a pen, etc. has been given, so as to realize The processing triggered by the position above. A resistive touch screen is widely used as a position detection device. This resistive touch screen adopts a transparent sheet on which electrodes are arranged in grid form to obtain the touch position through the change of the resistance value of the touch position. coordinate. [0003] However, this resistive touch screen has poor durability. In addition, since the resistive type touch screen is stacked on the display, it degrades the quality of the image displayed on the display, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042G06F3/03G06F3/033G06F3/041G06K11/06G06M7/00H01L31/00
CPCG06F3/0428G06F3/0304G06F3/0346G06F3/0354
Inventor 大河原义昭高桑秀美
Owner SONY CORP