| US 7,562,822 B1 | ||
| Methods and devices for creating and processing content | ||
| Christopher Schmidt, Fairfax, Calif. (US); Michael Handelman, Phoenix, Ariz. (US); and Elizabeth Young, San Francisco, Calif. (US) | ||
| Assigned to LeapFrog Enterprises, Inc., Emeryville, Calif. (US) | ||
| Filed on Dec. 30, 2005, as Appl. No. 11/323,249. | ||
| Int. Cl. G06K 7/00 (2006.01) | ||
| U.S. Cl. 235—461 [235/454; 345/156; 345/626] | 22 Claims |
| 11. A pen-shaped device comprising:
a writing element projecting from a housing;
an optical detector coupled to said housing;
a processor coupled to said optical sensor; and
a memory coupled to said processor, said memory unit containing instructions that when executed implement a method for storing
information accessed on a surface having printed thereon a pattern of markings that define spatial coordinates, said method
comprising:
sensing a mark on a surface, said sensing performed using said optical detector as said mark is made on said surface by a
writing element;
storing stroke data associated with said mark, wherein said stroke data comprises coordinates corresponding to a subset of
said pattern of markings traversed by said mark; and
associating said stroke data with a region of said surface, wherein said stroke data is operated on according to an operation
associated with said region, wherein said operation comprises associating metadata with said stroke data, wherein a representation
of said mark that is rendered on a display device has a property that is selected according to said metadata.
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