Method and an apparatus for editing tree structures in display

Details Method and an apparatus for editing tree structures in display Method and an apparatus for editing tree structures in display

1993-04-29

1995-07-11

Jankus, Almis R.

395133, 395147, 395161, G06T 1160

Patent

active

054328977

ABSTRACT:
A method and an apparatus for editing displayed tree structures allows movement and connection of a moving object in the tree structure to an aimed object with a reduced number of operational steps and displays the moving object on a display unit in order to facilitate the work of an operator who edits tree structures. The apparatus for editing tree structures has a memory for storing tree structure information, an operation unit for inputting operational information including selection, separation, move and connection of an object displayed on a screen of the display unit, a coordinate computing device for computing coordinates on the screen in accordance with operational information, a searching device for retrieving an object which can be a parent of a moving object, a tree structure editing device for renewing the tree structure information stored in the memory and editing tree structures in accordance with inputted operational information and a display drive unit for generating a pattern displaying tree structures after editing and displaying the pattern on the display unit.

REFERENCES:
patent: 4785408 (1988-11-01), Britton et al.
patent: 4891766 (1990-01-01), Derr et al.
patent: 5167011 (1992-11-01), Priest
patent: 5168554 (1992-12-01), Luke
The Windowing Environment, Nexpert Object pp. 24, 25, Nuron Data Company.

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