Universal file format for digital rich ink data

Details Universal file format for digital rich ink data Universal file format for digital rich ink data

2005-02-01

2005-02-01

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S179000, C345S546000, C345S600000

Reexamination Certificate

active

06850228

ABSTRACT:
A universal file format for providing digital rich ink data documents. Digital rich ink data is hidden among the ink image data otherwise stored in a widely-accepted image file format. For example, depending on the type of file, data can be concealed in the least significant bit or bits of pixel information, or stored in-different color indexes of a palette that result in the same color output. In other file types, digital rich ink data may be appended after the end of file marker, or placed in a comment area. When such a file is accessed, computing devices capable of handling rich ink data recognize and extract the rich ink data from the file, while devices incapable of recognizing the format are still able to display the ordinary ink data. Two file formats for describing the arrangement of rich ink data are also provided.

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