Redundantly encoded data structure for encoding a surface

• US 20050185461A1
• Filed: 03/10/2005
• Published: 08/25/2005
• Est. Priority Date: 07/10/1998
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Walmsley, Simon Robert
• Granted Patent: US 7,083,108 B2
• Time in Patent Office: Days
• US Class Current: 365/185.30
• CPC Class Codes: B41J 15/04 Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
• CPC Class Codes: B41J 2/175 Ink supply systems ; Circuit parts therefor
• CPC Class Codes: B41J 2002/14362 Assembling elements of heads
• CPC Class Codes: B41J 2002/14419 Manifold
• CPC Class Codes: B41J 2002/14491 Electrical connection
• CPC Class Codes: B41J 2202/21 Line printing
• CPC Class Codes: B41J 3/445 Printers integrated in other types of apparatus, e.g. printers integrated in cameras
• CPC Class Codes: G06K 19/06 characterised by the kind of the digital marking, e.g. shape, nature, code

Abstract

A data structure encoded on a surface of an objectincludes a plurality of block data regions. Each of the block regions includes a spatially distributed redundantly encoded data region containing data in encoded form, a clock mark structure located adjacent a first peripheral portion of the encoded data region, and a target structure located adjacent the clock mark structure. Each of the block data regions further includes an orientation data structure indicative of an orientation of the data structure.

Claims

1. A data structure encoded on a surface of an object, said data structure comprising a plurality of block data regions, each of said block data regions including:

an encoded data region containing data in a spatially distributed redundantly encoded form;

a clock mark structure located adjacent a first peripheral portion of said encoded data region; and

a target structure located adjacent said clock mark structure;

wherein each of said block data regions further includes an orientation data structure indicative of an orientation of said data structure.

2. A data structure as claimed in claim 1, wherein said orientation data structure is an elongate data region including a plurality of data points corresponding to a first value.

3. A data structure as claimed in claim 2, wherein said clock mark structure includes a first elongate region of data points corresponding to a first value and an adjacent second elongate region of alternating first and second data points corresponding to respective alternating first and second values, said clock mark structure defining an edge of said encoded data region.

4. A data structure as claimed in claim 3, wherein a first clock mark structure is located adjacent a first edge of said encoded data region and a second clock mark structure is located adjacent a second opposite edge of said encoded data region.

5. A data structure as claimed in claim 1, wherein said target structure comprises a plurality of first data points, each said first data point corresponding to a first value, and a plurality of second data points corresponding to a second value different to said first value.

6. A data structure as claimed in claim 5, wherein said target structure further includes a target number indicator structure comprising a contiguous group of said second data points, said target number indicator structure being indicative of a target identification number associated with said target structure.

7. A data structure as claimed in claim 1, wherein said data structure comprises a series of dots printed on a surface of a substrate.