TASK ANALYSIS SYSTEM, TASK ANALYSIS DEVICE, TASK MANAGEMENT APPARATUS, DOCUMENT DISPLAY, COMPUTER READABLE MEDIUM, METHOD OF TASK ANALYSIS, AND COMPUTER DATA SIGNAL

A task analysis system includes: a document display that displays a document image and retains unit identification information identifying the document display itself; and a task management apparatus that manages a task, the task management apparatus including: a task associating unit that previously determines the unit identification information of the document display used to carry out the task; a acquisition unit that acquires the unit identification information and document identification information of a document displayed on the document display, the document identification information identifying the document; and a task analysis unit that determines the document used to carry out the task based on the document identification information, the document identification information being acquired corresponding to the unit identification information determined in the task associating unit.