RETRIEVING LOCATION DATA BY SENSING CODED DATA ON A SURFACE

• US 20100231981A1
• Filed: 05/25/2010
• Published: 09/16/2010
• Est. Priority Date: 09/19/2005
• Status: Abandoned Application

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Lapstun, Paul
• Application Number:
  US12/786,435
• Publication Number:
  US 20100231981A1
• Time in Patent Office: Days
• US Class Current: 358/3.280
• 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: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion

Abstract

Provided is a method of retrieving location data using a print medium. A coded data portion encoded on a surface of the print medium is sensed using a sensor module when the sensor module is positioned on the surface. The surface has a plurality of coded data portions encoded thereon. Each coded data portion encodes at least a print media identifier which identifies the print medium and a two-dimensional coordinate grid position of the coded data portion on the surface of the print medium. The print media identifier and the two-dimensional coordinate grid position of the coded data portion sensed by the sensor module are determined from the coded data. Location data referenced by the print media identifier and a region on the surface of the print medium is retrieving from a database when the two-dimensional coordinate grid position of the coded data portion sensed by the sensor module is within the region.

Claims

1. A method of retrieving location data using a print medium, the method comprising steps of:

sensing a coded data portion encoded on a surface of the print medium using a sensor module when the sensor module is positioned on the surface, the surface having a plurality of coded data portions encoded thereon, each coded data portion encoding at least a print media identifier which identifies the print medium and a two-dimensional coordinate grid position of the coded data portion on the surface of the print medium;

determining the print media identifier from the coded data sensed by the sensor module;

determining the two-dimensional coordinate grid position of the coded data portion sensed by the sensor module from the coded data;

retrieving from a database location data referenced by the print media identifier and a region on the surface of the print medium, the two-dimensional coordinate grid position of the coded data portion sensed by the sensor module being within said region.

2. The method as claimed in claim 1 further comprising a step of printing, by a printer module, information associated with or representative of the location data.

3. The method as claimed in claim 1, wherein the location data is one of geographic position data or address data and the method further comprises a step of loading the location data into a navigation system.

4. The method as claimed in claim 1, further comprising the step of associating the location data with at least one of:

an image; and

video.

5. The method as claimed in claim 1, wherein the coded data portion further encodes a digital signature associated with the print media identifier, the method including:

determining from the coded data portion sensed by the sensor module, the digital signature;

determining whether the digital signature is authentic; and

retrieving, if the digital signature is authentic, the location data.

6. The method as claimed in claim 5, wherein the digital signature includes at least one of:

a random number;

a secret-key digital signature; and

a public-key digital signature.