US 6,289,493 B1Granted

Layout editor and its text generating method

AssigneeNEC Corporation

InventorYumiko Kita

Life of this patent

Estimating the term…

Loading patent…

Abstract

A layout editor comprises a text attachment condition specifying unit for specifying attachment condition of a text, a text generation area specifying unit for specifying a text generation area, a specified area information extracting unit for extracting the coordinates of the text generation area and necessary information, a specified area/graphic data AND generating unit for performing an AND operation of the coordinates of the specified area and the graphic data of the graphic table, a signal name extracting unit for extracting signal name of the graphic data corresponding to the AND output, a text generation judging unit for judging the manner of text generation, and a text generating unit for generating or deleting a text according to the judgement result by the text generation judging unit corresponding to the attachment condition by the text attachment condition specifying unit.

Claims14

Dependent claims

A layout editor for use in a CAD system for the purpose of semiconductor integrated circuit design, comprising:

text attachment condition specifying means for specifying an attachment condition for a text to be generated, in order to generate a given text;
text generation area specifying means, receiving the attachment condition specified by said text attachment condition specifying means, for specifying a text generation area by user's input;
specified area information extracting means for extracting the coordinates of the specified area according to the specification information specified by said text generation area specifying means and extracting necessary information from a connection table, a graphics/signals correspondence table, and a graphic table;
specified area/graphic data AND generating means for performing an AND operation of the graphic data of the graphic table and the coordinates of the specified area extracted by said specified area information extracting means;
signal name extracting means for extracting signal name of the graphic data corresponding to the AND output by said specified area/graphic data AND generating means;
signal list extracting means for extracting connection information from the connection table, to create a signal list;
existing text list extracting means for extracting the graphic data corresponding to an existing text which meets the attachment condition specified by said text attachment condition specifying means, from the graphic table, to create an existing text list;
text generation judging means, receiving the attachment condition specified by said text attachment condition specifying means and the signal name extracted by said signal name extracting means, for judging the manner of text generation with reference to the signal list and the existing text list;
and
text generating means for generating or deleting a text according to the judgement result by said text generation judging means in correspondence with the attachment condition by said text attachment condition specifying means.

7 more elements

A text generating method in a layout editor for use in a CAD system for the purpose of semiconductor integrated circuit design, comprising the steps of:

a step of specifying an attachment condition including a manner of text generation;
a step of specifying a text generation area;
a step of obtaining all the graphic data of the graphic on which a text should be generated, according to the attachment condition specified by said attachment condition specifying step and the information on the text generation area specified by said text generation area specifying step;
a step of obtaining all the signal names of the graphic data obtained by said graphic data obtaining step;
a step of judging whether or not to generate a text of each signal name obtained by said signal name obtaining step, according to a given rule depending on the manner of the text generation in the attachment condition specified by said attachment condition specifying step;
and
a step of generating a text judged to be generated by said judging step, in the text generation area specified by said text generation area specifying step.

4 more elements

A computer readable memory storing a computer program for controlling a layout editor for use in a CAD system for the purpose of semiconductor integrated circuit design, the computer program comprising the steps of:

a step of specifying an attachment condition including a manner of text generation;
a step of specifying a text generation area;
a step of obtaining all the graphic data of the graphic on which a text should be generated, according to the attachment condition specified by said attachment condition specifying step and the information on the text generation area specified by said text generation area specifying step;
a step of obtaining all the signal names of the graphic data obtained by said graphic data obtaining step;
a step of judging whether or not to generate a text of each signal name obtained by said signal name obtaining step, according to a given rule depending on the manner of the text generation in the attachment condition specified by said attachment condition specifying step;
and
a step of generating a text judged to be generated by said judging step, in the text generation area specified by said text generation area specifying step.

4 more elements

Dependencies are inferred from the claim text.