Visual code system for camera-equipped mobile devices and applications thereof

A mobile device, digital camera technology, applied in the field of special visual code

Inactive Publication Date: 2008-01-02
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These issues go well beyond the challenges found in commercially available barcode readers

Method used

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  • Visual code system for camera-equipped mobile devices and applications thereof
  • Visual code system for camera-equipped mobile devices and applications thereof
  • Visual code system for camera-equipped mobile devices and applications thereof

Examples

Experimental program
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Embodiment Construction

[0033] A detailed description of the preferred embodiment (and some alternative embodiments) of the invention is given below. It should be apparent, however, to those skilled in the art that changes in form and content of the described embodiments may be made to optimize various situations.

[0034] Referring first to FIG. 1, there is shown an example of a visual code 101 useful in the present invention. The visual code 101 consists of a large guide bar 103 and a small guide bar 105 for determining the position and orientation of the visual code 101, and three cornerstones 107, 109 and 111 for detecting distortion, and a data area with the actual code bits . The shown version of the visual code 101 has a capacity of 83 bits, but its design is generic and suitable for scaling to large bit numbers. The visual code 101 can be reliably localized even in small, oblique, low-quality images.

[0035] Visual code 101 may be printed using standard inks or infrared inks. If the visu...

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PUM

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Abstract

The present invention discloses a visual code system wherein camera-equipped mobile phones (or similar devices, such as wireless PDAs) are used to identify and decode images that contain one or more ''visual codes.'' By recognizing a code tag, the device can determine a bit patterns or an integer number encoded in the tag (the code value), the targeted object or image element, as well as additional parameters, such as the viewing angle of the camera. Code recognition is performed on the mobile device itself. When the mobile device is equipped with a wireless communication channel, it can be used to retrieve online content or to access information on the Internet based on the sensed code and its parameters. The retrieved content can then be presented on the mobile device.

Description

[0001] Cross-references to related fields [0002] This application claims priority to U.S. Patent Application No. 11 / 105,150, filed April 13, 2005, based on Provisional Application No. 60 / 563,669, filed April 19, 2004, the disclosures of both patent applications are incorporated by reference in their entirety Incorporated herein and claiming priority from these two patent applications. technical field [0003] The present invention relates to the field of decoding machine-readable codes using camera-equipped mobile devices. More specifically, the present invention discloses a dedicated visual code that can be decoded and utilized by virtually any camera-equipped mobile device. Background technique [0004] For more than three decades, barcodes have been used to identify and price objects. More commonly, barcodes are used in retail to identify items of merchandise. For example, a gallon of milk could contain a barcode that, when scanned, would tell the cashier the price o...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06K7/10G06K7/00G06K19/08G06K9/36G06K9/80E04B2/02E04B2/04E04B2/16E04B2/18E04B2/22E04C2/04
CPCG06K19/06037G06K7/1456G06K7/1443G06K7/14G06K7/1417
Inventor迈克尔·罗斯比特·格菲勒
OwnerSCANBUY