DEVICE THAT READS DATA ENCODED AS DOTS

• US 20090242638A1
• Filed: 06/04/2009
• Published: 10/01/2009
• Est. Priority Date: 10/20/2000
• Status: Abandoned Application

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Lapstun, Paul, Walmsley, Simon Robert
• Application Number:
  US12/478,758
• Publication Number:
  US 20090242638A1
• Time in Patent Office: Days
• US Class Current: 235/454
• CPC Class Codes: H04N 1/00347 with another still picture apparatus, e.g. hybrid still picture apparatus circuits or arrangements for control or supervision between image input and image output device H04N1/32
• CPC Class Codes: H04N 1/00408 Display of information to the user, e.g. menus
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/32133 on the same paper sheet, e.g. a facsimile page header
• CPC Class Codes: H04N 2201/0081 Image reader H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0089 Image display device
• CPC Class Codes: H04N 2201/0096 Portable devices
• CPC Class Codes: H04N 2201/3266 of text or character information, e.g. text accompanying an image H04N2201/3226 takes precedence
• CPC Class Codes: H04N 2201/327 which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3271 Printing or stamping
• CPC Class Codes: H04N 2201/3273 Display

Abstract

A system is disclosed for reading data encoded as a series of invisible dots carried on a substrate. The system has a detector that detects the dots on the substrate and outputs a first signal; a decoder interconnected to the detector that decodes the first signal to produce an output signal; and an output device interconnected to the processor that receives the output signal and creates a corresponding human readable output. The dots may be infrared absorbing and the encoding can include Reed-Solomon encoding of the prerecorded audio. The system can include a wand-like arm having a slot through which the photograph is inserted.

Claims

1. A display device comprising:

a slot for receiving a card having visible content printed thereon, the card further having the dot data encoded on the surface of the card as an array of dots, the array of dots being printed on the surface independently of the visible content printed on the surface;

a detector for optically detecting the array of dots across the surface of the card received in the slot and for outputting a first signal representative thereof;

a decoder interconnected to said detector for receiving and decoding said first signal to produce a display signal corresponding to the first signal; and

a display for displaying the display signal.

2. The device of claim 1 wherein the dots are dots of ink.

3. The device according to claim 2 wherein the ink is substantially invisible to an average unaided human eye.

4. The device of claim 3 wherein the ink is infrared absorbing ink with little absorption in the visible spectrum.

5. The device of claim 1 wherein said dot data is encoded using Reed-Solomon encoding.