Systems and methods for sensing and tracking radiation blocking objects on a surface

An object and radiation source technology, applied in the input/output process of data processing, optical device exploration, instruments, etc., can solve the problems of high precision and response time, high cost, and complexity

Active Publication Date: 2012-07-18
BAANTO INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing systems suffer from various deficiencies including excessive complexity and cost, high computational load affecting their accuracy and response time, and other deficiencies

Method used

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  • Systems and methods for sensing and tracking radiation blocking objects on a surface
  • Systems and methods for sensing and tracking radiation blocking objects on a surface
  • Systems and methods for sensing and tracking radiation blocking objects on a surface

Examples

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Embodiment Construction

[0031] The exemplary embodiments described herein provide details regarding systems and methods for determining the position of one or more radiation blocking objects relative to various radiation sources and radiation sensors. In some embodiments, the radiation sources and sensors may be mounted in a frame. In some embodiments, the system may include or be used with various underlying devices, such as whiteboards, display monitors, and other devices. In some embodiments, the system may include or be used on an underlying surface, such as a whiteboard, wall, the surface of a display screen, or any other generally planar surface. The radiation source may emit radiation in the visible spectrum or other spectrum such as the ultraviolet or infrared spectrum. The embodiments described herein are exemplary only and other implementations and configurations are possible.

[0032] first reference figure 1 , which shows a system 100 for sensing or estimating the position of a radiati...

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PUM

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Abstract

Several systems for tracking one or more radiation blocking objects on a surface are disclosed. A pair of radiation sensors are provided adjacent the surface and a plurality of radiation sources are provided adjacent the surface. Radiation from at least some of the radiation sources travels across the surface to reach each of the radiation sensors. One or more radiation blocking objects on the surface attenuate radiation from one or more radiation sources from reaching each of the sensors. The position of the one or more radiation blocking objects is estimates and may be tracked based on the position of the one or more attenuated radiation sources relative to each radiation sensor.

Description

technical field [0001] The described embodiments relate to systems, methods and sensors for sensing and tracking the location of one or more radiation blocking objects on a surface. Background technique [0002] Various computer inputs and other devices need to track one or more objects, such as a finger, stylus, pen, or other objects, as they lie on or move across a surface. For example, computer monitors and other display screens may be equipped with touch screens that allow a user to provide input to the computer using a finger or stylus as the finger or stylus is moved across the display surface of the screen. Similarly, a whiteboard may be equipped with a pen position sensing system that tracks the position of the pen or pens as they are moved across the writing surface of the whiteboard. [0003] Existing systems suffer from various drawbacks, including excessive complexity and cost, high computational loads affecting their accuracy and response time, and other drawba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V8/20G06F3/033G06F3/042
CPCG01V8/20G06F3/0428G06F3/033G06F3/042G06F3/046
Inventor A·尤图库里J·克拉克艾伦·瑞金
Owner BAANTO INT
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