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Apparatus and method for determining the position of an object

A technology for object and light detection, applied in the field of devices that provide touch devices to measure touch positions, and can solve problems such as undetectable coordinates

Inactive Publication Date: 2015-10-14
INFILM OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When two objects are on the same straight line as the scanning light and one object blocks the other, the technology disclosed in the above Taiwan patent and the US patent will not be able to detect the coordinates of the blocked object

Method used

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  • Apparatus and method for determining the position of an object
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  • Apparatus and method for determining the position of an object

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Embodiment Construction

[0030] For other purposes and functions of the present invention, please refer to the drawings and embodiments, and the details are as follows.

[0031] Such as figure 1 As shown, the device 1 for measuring the position of an object according to the first embodiment of the present invention includes a light emitting module 11, a light detection unit 12, a hybrid reflection unit 13, a first reflection unit 14, a second reflection unit 15, a signal The processing unit 16 and the microprocessor 17 are composed.

[0032] The light emitting module 11 of this embodiment includes an LED light source or a laser light source. The light detection unit 12 is a camera. The hybrid reflector unit 13 includes a strip-shaped "L"-shaped reflector 131 and a retroreflector (Retroreflector) 132. The retroreflector 132 is placed above the reflector 131, such as figure 2 As shown, the retro-reflector 132 can reflect light back in a direction close to the incident direction. The first reflectio...

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PUM

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Abstract

The invention relates to a method determining positions of objects. The method comprises: respectively detecting a first signal and a second signal which are obtained by reflecting and retroreflecting light rays emitted by a datum point of a lighting module through a strip-shaped L-type reflecting mirror and a retroreflector; processing the first signal and the second signal, and obtaining a plurality of angles A1 and a plurality of angles A2 which are respectively formed by light rays emitted by the datum point and directly or indirectly blocked by objects, a first reflecting unit and a second reflecting unit; respectively converting combinations of the plurality of angles A1 and each angle A2 respectively to obtain a plurality of coordinates; and then comparing the plurality of coordinates, selecting coordinates which are provided with at least two identical coordinate values from the plurality of coordinates, and confirming relative coordinates of the objects in a working area. Positions of a plurality of objects can be tested simultaneously, multi-point touch control can be performed conveniently, and coordinates of blocked objects can be tested.

Description

technical field [0001] The present invention relates to a device and a method for measuring the position of an object, in particular to a device and a method for providing a touch device for measuring the position of a touch. Background technique [0002] Some touch devices detect the coordinates of an object as input information for corresponding characters, patterns, and symbols, or as input information for interactive electronic game machines. [0003] U.S. Patent No. 4,762,990 discloses a data processing input interface for determining the position of an object (Data processing input interface determining position of object), including: an object is located in a working area surrounded by a reflection unit; a light source for scanning light, so that The scanning light scans the working area from the initial scanning position; a tool for measuring the position of the object in the working area, and measures when the scanning light irradiates the object through the surroun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
Inventor 林志雄
Owner INFILM OPTOELECTRONICS