PRODUCT PROVIDED WITH A CODING PATTERN AND APPARATUS AND METHOD FOR READING THE PATTERN

• US 20120193419A1
• Filed: 04/05/2012
• Published: 08/02/2012
• Est. Priority Date: 10/01/1999
• Status: Active Grant

• Current Assignee: Mats Petter Pettersson, Tomas Edso
• Original Assignee: Mats Petter Pettersson, Tomas Edso
• Inventors: PETTERSSON, Mats Petter, EDSO, Tomas
• Granted Patent: US 8,534,566 B2
• Time in Patent Office: Days
• US Class Current: 235/454
• CPC Class Codes: G06F 3/0321 by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet constructional details of pen-shaped pointing devices G06F3/03545, G06F3/03542, G06F3/037
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06K 19/06018 one-dimensional coding
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1417 2D bar codes
• CPC Class Codes: G06K 7/1443 locating of the code in an image
• CPC Class Codes: G06K 7/1456 determining the orientation of the optical code with respect to the reader and correcting therefore
• CPC Class Codes: G06V 10/17 using hand-held instruments
• CPC Class Codes: G06V 10/19 by sensing codes defining pattern positions

Abstract

A product provided with a coding pattern which comprises a plurality of marks, each of which represents one of at least two different values, and which further comprises a plurality of nominal positions, each of said plurality of marks being associated with a nominal position and the value of each mark being determined by its location relative to its nominal position. The invention also comprises use of the product.

Claims

1-41. -41. (canceled)

42. A product for decoding information, the product comprising:

a sensor for detecting a plurality of marks on a surface to obtain associated mark location data, at least a first group of the plurality of marks being arranged on the surface so as to define an invisible raster with predetermined dimensions, and wherein marks in at least a second group of the plurality of marks are displaced from raster locations in a manner encoding information; and

a processor for receiving from the sensor at least some of the mark location data, the processor being configured to determine, using the received mark location data, a position of the invisible raster on the surface, and the processor being further configured to decode information based on positions of at least some of the marks in the second group of the plurality of marks relative to locations on the invisible raster.