SYSTEM FOR GENERATING PRINTED INTERFACE SURFACE

• US 20110176178A1
• Filed: 03/30/2011
• Published: 07/21/2011
• Est. Priority Date: 09/17/1999
• Status: Abandoned Application

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Lapstun, Paul
• Application Number:
  US13/076,292
• Publication Number:
  US 20110176178A1
• Time in Patent Office: Days
• US Class Current: 358/3.28
• 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 19/06046 Constructional details
• CPC Class Codes: G06K 19/06075 the marking containing means for error correction

Abstract

A system for generating an interface surface is provided which has a code generator for generating coded data and a printer for printing the generated coded data onto a surface to generate an interface surface. The code generator generates the coded data to be arranged in accordance with a layout having order n rotational symmetry about a center of rotation, where n is at least two. The layout includes n sub-layouts rotated 1/n revolutions apart about the center of rotation. Each sub-layout includes rotation-indicating data.

Claims

1. A system for generating an interface surface, the system comprising:

a code generator for generating coded data to be arranged in accordance with a layout having order n rotational symmetry about a center of rotation, where n is at least two, the layout including n sub-layouts rotated 1/n revolutions apart about the center of rotation, each sub-layout including rotation-indicating data; and

a printer for printing the generated coded data onto a surface to generate an interface surface.

2. A system according to claim 1, wherein the coded data is printed in ink which is substantially invisible to the unaided human eye.

3. A system according to claim 2, wherein the printer prints visible markings on the surface substantially simultaneously with the coded data.

4. A system according to claim 1, wherein the coded data has a plurality of layouts, each layout having at least one codeword that is different to at least one codeword of at least one other layout.