Retrieving a document via a coded surface

• US 7,844,257 B2
• Filed: 09/19/2005
• Issued: 11/30/2010
• Est. Priority Date: 09/19/2005
• Status: Expired due to Fees

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Lapstun, Paul
• Primary Examiner(s): Pan; Yuwen
• Application Number:
  US11/228,496
• Publication Number:
  US 20070066352A1
• Time in Patent Office: 1,898 Days
• Field of Search: 455/414.1, 455/414.2
• US Class Current: 455/414.1
• CPC Class Codes: G06V 10/19 by sensing codes defining pattern positions
• CPC Class Codes: G06V 30/1423 the instrument generating sequences of position coordinates corresponding to handwriting preprocessing or recognising digital ink G06V30/32
• CPC Class Codes: G06V 30/274 Syntactic or semantic context, e.g. balancing
• CPC Class Codes: H04M 1/7243 with interactive means for internal management of messages

Abstract

A method of retrieving a document using a print medium, comprising the steps of: determining a print media identifier from the print medium using a sensor module of a mobile telecommunications device, the print media identifier having been linked to the document; and, retrieving, using the mobile telecommunications device, the document.

Claims

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

printing information representative of the document on the print medium using a printer module of a mobile telecommunications device;

sensing by a sensor in a media feed path of the printer module first coded data in a linear pattern while the print medium is being printed upon, the first coded pattern encoding a print media identifier which unique identifies the print medium;

associating the print media identifier and one or more positions on the print medium with the document;

sensing second coded data disposed at a position on the print medium using a sensor module of the mobile telecommunications device, the second coded data being in a two-dimensional pattern and encoding the print media identifier and the position of the second coded data sensed by the sensor module on the print medium;

determining by a processor of the mobile telecommunications device the print media identifier from the coded data sensed by the sensor module;

determining by the processor and from the second coded data the position of the second coded data sensed by the sensor module and the print medium identifier;

retrieving, using the mobile telecommunications device, the document associated with the print media identifier and the position; and

displaying the document on a display of the mobile telecommunications device.

2. The method as claimed in claim 1, wherein the second coded data further encodes a digital signature associated with the print media identifier, the method further comprising the steps of:

determining the digital signature from the second coded data; and

determining whether the digital signature is authentic, wherein the document is retrieved if the digital signature is authentic.

3. The method as claimed in claim 2, wherein the digital signature includes at least one of:

a random number;

a secret-key digital signature; and

a public-key digital signature.