ELECTRONIC INK PROCESSING Russian patent published in 2013 - IPC G06F15/00 G06F17/20 

FIELD: information technology.

SUBSTANCE: document-independent context object is created from the current document context object; a copy of the document-independent context object is created. Said copy is modified during analysis of the document to include analysis results of electronic ink of the document-independent context object. A second version of the current context object is received for each ink node in the document-independent context object if there is a corresponding node in the current context object. That node is added to the hash table, in which conformity is given of unique node identifiers in the document-independent context object to node links in the current context object; for each node in the document-independent context object, it is determined whether said corresponding node in the second version of the current context object is different from said each node, and that node is added to the list of nodes to which changes are not extended.

EFFECT: faster processing of electronic ink.

4 cl, 49 dwg