ACTIVE EMBEDDED INTERACTION CODING

• US 20070104371A1
• Filed: 12/29/2006
• Published: 05/10/2007
• Est. Priority Date: 10/31/2002
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Wang, Qiang, Li, Yue, Wang, Jian, Zhang, Chunhui
• Granted Patent: US 7,486,822 B2
• Time in Patent Office: Days
• US Class Current: 382/182
• 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 19/06037 multi-dimensional coding
• CPC Class Codes: G06V 30/142 using hand-held instruments; Constructional details of the instruments

Abstract

A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.

Claims

1. A computer-readable medium having a data structure, said data structure comprising:

a first data region represented by a row of dark images associated with at least another row of light images;

a second data region represented by a column of dark images associated with at least another column of light images,

wherein said first data region represents a first bit of a data stream and

wherein said second data region represents a second bit of a data stream.

2. The computer-readable medium according to claim 1,

wherein said computer-readable medium is printed paper.

3. The computer-readable medium according to claim 1,

wherein said computer-readable medium is a computer display.

4. The computer-readable medium according to claim 1,

wherein said first and second data regions have a horizontal and vertical orientation.

5. The computer-readable medium according to claim 1,

wherein said first and second data regions have a non-horizontal and vertical orientation.

6. The computer-readable medium according to claim 1,

wherein said first and second data regions have regularly alternating dark and light portions.

7. The computer-readable medium according to claim 1,

wherein said first and second data regions have irregularly alternating dark and light portions.

8. The computer-readable medium according to claim 1,

wherein said first and second data regions have alternating dark and light portions that alternate over at least two rows or columns.