US 2010/0073474 A1Published application

Apparatus for interpreting image position

AssigneeEra Optoelectronics Inc.

InventorsChih-Hsiung Lin, Yi-Ping Hung

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Abstract

An apparatus for interpreting an image position is used for respectively reflecting an image of a target to a lens of at least one camera by means of first and second reflection mirrors to be respectively taken a photo as first and second images by the lenses. A microprocessor processes the first and the second images to obtain a relative coordinate value of a target in an operation plane range. A horizontal optical axis of at least one camera is parallel to the operation plane. Whereby, a position of an input zone touched by a user is interpreted more quickly so as to elevate the inputting efficiency of a data input device, and whether the user touches the input zone is interpreted more accurately so as to elevate the inputting accuracy of the data input device.

Claims15

Dependent claims

An apparatus for interpreting an image position, using cameras to take a photo of an image so as to obtain a position of a target, comprising:

a first camera, provided with a first lens and used for taking a photo of an image;
a second camera, provided with a second lens and used for taking a photo of an image;
a first reflection mirror, positioned in a visual angle range of said first lens, and used for reflecting an image of a target to said first lens to be taken a photo by said first lens as a first image in an image of said first reflection mirror;
a second reflection mirror, positioned in a visual angle range of said second lens, and used for reflecting an image of a target to said second lens to be taken a photo by said second lens as a second image in an image of said second reflection mirror;
and
a microprocessor, electrically connected with said first and said second cameras, and used for processing said first and said second images respectively taken a photo by said first and said second cameras and obtaining a relative coordinate of said target in a operation plane range by means of operational analysis;
wherein horizontal optical axes of said first and said second cameras respectively are parallel to said operation plane;
x′ z′ planes of coordinate systems of said first and said second cameras respectively are parallel to a xz plane at which said operation plane is located.

5 more elements

An apparatus for interpreting an image position, using cameras to take a photo of an image so as to obtain a position of a target, comprising:

a fourth camera, provided with a fourth lens and used for taking a photo of an image;
a first reflection mirror, positioned in a visual angle range of said fourth lens, and used for reflecting an image of a target to said fourth lens to be taken a photo by said fourth lens as a first image in an image of said first reflection mirror;
a second reflection mirror, positioned in a visual angle range of said fourth lens, and used for reflecting an image of a target to said fourth lens to be taken a photo by said second lens as a second image in an image of said second reflection mirror;
and
a microprocessor, electrically connected with said fourth camera, and used for processing said first and said second images respectively taken a photo by said fourth camera and obtaining a relative coordinate of said target in a operation plane range by means of operational analysis;
wherein a horizontal optical axis of said fourth camera is parallel to said operation plane;
a x′ z′ plane of a coordinate system of said fourth camera is parallel to a xz plane at which said operation plane is located.

4 more elements

Dependencies are inferred from the claim text.